Disable error as warning

Add one more #include<functional>
Add some include<functional>
2026-11-07 03:22:34 -05:00 · 2019-11-05 11:04:45 -08:00 · 2019-11-05 11:04:44 -08:00 · 2019-10-31 14:24:56 -07:00 · 2019-10-31 14:24:29 -07:00 · 2017-07-17 22:22:40 -07:00
550 changed files with 8651 additions and 49164 deletions
@@ -32,7 +32,6 @@ build/
 ldb
 manifest_dump
 sst_dump
-column_aware_encoding_exp
 util/build_version.cc
 build_tools/VALGRIND_LOGS/
 coverage/COVERAGE_REPORT
@@ -67,5 +66,3 @@ t
 LOG

 db_logs/
-tp2/
-fbcode/
@@ -9,7 +9,7 @@ compiler:
 addons:
   apt:
      sources: ['ubuntu-toolchain-r-test', 'llvm-toolchain-precise-3.6']
-      packages: ['clang-3.6' , 'zlib1g-dev', 'libbz2-dev', 'libsnappy-dev', 'curl', 'gflags']
+      packages: ['clang-3.6' , 'zlib1g-dev', 'libbz2-dev', 'libsnappy-dev', 'curl']
 env:
  # Run all tests before db_block_cache_test (db_test, db_test2)
  - JOB_NAME=unittests ROCKSDBTESTS_END=db_block_cache_test
@@ -26,9 +26,15 @@ install:
  - pushd /tmp/ && curl -L https://github.com/gflags/gflags/archive/v2.1.2.tar.gz -o gflags.tar.gz && tar xfz gflags.tar.gz && cd gflags-2.1.2 && cmake . && make && popd

 before_script:
+  # Add gflags to include/library paths
+  # TODO(noetzli): Remove when gflags available through Travis
+  - export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/tmp/gflags-2.1.2/lib"
+  - export LIBRARY_PATH="$LIBRARY_PATH:/tmp/gflags-2.1.2/lib"
+  - export CPLUS_INCLUDE_PATH="$CPLUS_INCLUDE_PATH:/tmp/gflags-2.1.2/include"
  - if [[ "${TRAVIS_OS_NAME}" == 'linux' ]]; then CXX=clang++-3.6; fi
-  # Limit the maximum number of open file descriptors to 8192
-  - ulimit -n 8192 || true
+  - if [[ "${TRAVIS_OS_NAME}" == 'osx' ]]; then brew install gflags snappy; fi
+  # Limit the maximum number of open file descriptors to 2000
+  - ulimit -n 2000 || true

 script:
  - if [[ "${JOB_NAME}" == 'unittests' ]]; then OPT=-DTRAVIS V=1 make -j4 check_some; fi
@@ -1,7 +1,7 @@
 # This cmake build is for Windows 64-bit only.
 #
 # Prerequisites:
-#     You must have at least Visual Studio 2015 Update 3. Start the Developer Command Prompt window that is a part of Visual Studio installation.
+#     You must have Visual Studio 2013 Update 4 installed. Start the Developer Command Prompt window that is a part of Visual Studio installation.
 #     Run the build commands from within the Developer Command Prompt window to have paths to the compiler and runtime libraries set.
 #     You must have git.exe in your %PATH% environment variable.
 #
@@ -13,7 +13,8 @@
 #        cd build
 # 3. Run cmake to generate project files for Windows, add more options to enable required third-party libraries.
 #    See thirdparty.inc for more information.
-#        sample command: cmake -G "Visual Studio 14 Win64" -DGFLAGS=1 -DSNAPPY=1 -DJEMALLOC=1 -DJNI=1 ..
+#        sample command: cmake -G "Visual Studio 12 Win64" -DGFLAGS=1 -DSNAPPY=1 -DJEMALLOC=1 -DJNI=1 ..
+#        OR for VS Studio 15 cmake -G "Visual Studio 14 Win64" -DGFLAGS=1 -DSNAPPY=1 -DJEMALLOC=1 -DJNI=1 ..
 # 4. Then build the project in debug mode (you may want to add /m[:<N>] flag to run msbuild in <N> parallel threads
 #                                          or simply /m ot use all avail cores)
 #        msbuild rocksdb.sln
@@ -28,108 +29,37 @@
 cmake_minimum_required(VERSION 2.6)
 project(rocksdb)

-if(POLICY CMP0042)
-  cmake_policy(SET CMP0042 NEW)
-endif()
-
-list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake/modules/")
-
-if(WIN32)
-  include(${CMAKE_CURRENT_SOURCE_DIR}/thirdparty.inc)
-else()
-  option(WITH_JEMALLOC "build with JeMalloc" OFF)
-  if(WITH_JEMALLOC)
-    find_package(JeMalloc REQUIRED)
-    add_definitions(-DROCKSDB_JEMALLOC)
-    include_directories(${JEMALLOC_INCLUDE_DIR})
-  endif()
-  option(WITH_SNAPPY "build with SNAPPY" OFF)
-  if(WITH_SNAPPY)
-    find_package(snappy REQUIRED)
-    add_definitions(-DSNAPPY)
-    include_directories(${SNAPPY_INCLUDE_DIR})
-    list(APPEND THIRDPARTY_LIBS ${SNAPPY_LIBRARIES})
-  endif()
-endif()
-
-if(WIN32)
-  execute_process(COMMAND powershell -Command "Get-Date -format MM_dd_yyyy" OUTPUT_VARIABLE DATE)
-  execute_process(COMMAND powershell -Command "Get-Date -format HH:mm:ss" OUTPUT_VARIABLE TIME)
-  string(REGEX REPLACE "(..)_(..)_..(..).*" "\\1/\\2/\\3" DATE "${DATE}")
-  string(REGEX REPLACE "(..):(.....).*" " \\1:\\2" TIME "${TIME}")
-  set(GIT_DATE_TIME "${DATE} ${TIME}")
-else()
-  execute_process(COMMAND date "+%Y/%m/%d %H:%M:%S" OUTPUT_VARIABLE DATETIME)
-  string(REGEX REPLACE "\n" "" DATETIME ${DATETIME})
-  set(GIT_DATE_TIME "${DATETIME}")
-endif()
+include(${CMAKE_CURRENT_SOURCE_DIR}/thirdparty.inc)
+execute_process(COMMAND powershell -Command "Get-Date -format MM_dd_yyyy" OUTPUT_VARIABLE DATE)
+execute_process(COMMAND powershell -Command "Get-Date -format HH:mm:ss" OUTPUT_VARIABLE TIME)
+string(REGEX REPLACE "(..)_(..)_..(..).*" "\\1/\\2/\\3" DATE ${DATE})
+string(REGEX REPLACE "(..):(.....).*" " \\1:\\2" TIME ${TIME})
+string(CONCAT GIT_DATE_TIME ${DATE} ${TIME})

 find_package(Git)

 if (GIT_FOUND AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/.git")
-  if(WIN32)
    execute_process(COMMAND $ENV{COMSPEC} /C ${GIT_EXECUTABLE} -C ${CMAKE_CURRENT_SOURCE_DIR} rev-parse HEAD OUTPUT_VARIABLE GIT_SHA)
-  else()
-    execute_process(COMMAND ${GIT_EXECUTABLE} -C ${CMAKE_CURRENT_SOURCE_DIR} rev-parse HEAD OUTPUT_VARIABLE GIT_SHA)
-  endif()
 else()
-  set(GIT_SHA 0)
+    set(GIT_SHA 0)
 endif()

-string(REGEX REPLACE "[^0-9a-f]+" "" GIT_SHA "${GIT_SHA}")
+string(REGEX REPLACE "[^0-9a-f]+" "" GIT_SHA ${GIT_SHA})

-set(BUILD_VERSION_CC ${CMAKE_BINARY_DIR}/build_version.cc)
-file(GENERATE OUTPUT ${BUILD_VERSION_CC} CONTENT
-  "#include \"build_version.h\"
-const char* rocksdb_build_git_sha = \"rocksdb_build_git_sha:${GIT_SHA}\";
-const char* rocksdb_build_git_datetime = \"rocksdb_build_git_datetime:${GIT_DATE_TIME}\";
-const char* rocksdb_build_compile_date = __DATE__;
-")
-add_library(build_version OBJECT ${BUILD_VERSION_CC})
-target_include_directories(build_version PRIVATE
-  ${CMAKE_CURRENT_SOURCE_DIR}/util)
-if(WIN32)
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /Zi /nologo  /EHsc /GS /Gd /GR /GF /fp:precise /Zc:wchar_t /Zc:forScope /errorReport:queue")
+set(BUILD_VERSION_CC ${CMAKE_CURRENT_SOURCE_DIR}/util/build_version.cc)

-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /FC /d2Zi+ /W3 /WX /wd4127 /wd4800 /wd4996 /wd4351")
-else()
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -W -Wextra -Wall -Werror")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wsign-compare -Wshadow -Wno-unused-parameter -Wno-unused-variable -Woverloaded-virtual -Wnon-virtual-dtor -Wno-missing-field-initializers")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=native -fno-omit-frame-pointer -momit-leaf-frame-pointer")
-endif()
+add_custom_command(OUTPUT ${BUILD_VERSION_CC}
+    COMMAND echo "#include \"build_version.h\"" > ${BUILD_VERSION_CC}
+    COMMAND echo "const char* rocksdb_build_git_sha = \"rocksdb_build_git_sha:${GIT_SHA}\";" >> ${BUILD_VERSION_CC}
+    COMMAND echo "const char* rocksdb_build_git_datetime = \"rocksdb_build_git_datetime:${GIT_DATE_TIME}\";" >> ${BUILD_VERSION_CC}
+    COMMAND echo const char* rocksdb_build_compile_date = __DATE__\; >> ${BUILD_VERSION_CC}
+)

-option(WITH_ASAN "build with ASAN" OFF)
-if(WITH_ASAN)
-  add_definitions(-DROCKSDB_TSAN_RUN)
-  set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=address")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address")
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=address")
-  if(WITH_JEMALLOC)
-    message(FATAL "ASAN does not work well with JeMalloc")
-  endif()
-endif()
+add_custom_target(GenerateBuildVersion DEPENDS ${BUILD_VERSION_CC})

-option(WITH_TSAN "build with TSAN" OFF)
-if(WITH_TSAN)
-  set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=thread -pie")
-  add_definitions(-DROCKSDB_TSAN_RUN)
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=thread -fPIC")
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=thread -fPIC")
-  if(WITH_JEMALLOC)
-    message(FATAL "TSAN does not work well with JeMalloc")
-  endif()
-endif()
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /Zi /nologo  /EHsc /GS /Gd /GR /GF /fp:precise /Zc:wchar_t /Zc:forScope /errorReport:queue")

-option(WITH_UBSAN "build with UBSAN" OFF)
-if(WITH_UBSAN)
-  set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=undefined")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=undefined")
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=undefined")
-  if(WITH_JEMALLOC)
-    message(FATAL "UBSAN does not work well with JeMalloc")
-  endif()
-endif()
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /FC /d2Zi+ /W3 /WX /wd4127 /wd4800 /wd4996 /wd4351")

 # Used to run CI build and tests so we can run faster
 set(OPTIMIZE_DEBUG_DEFAULT 0)        # Debug build is unoptimized by default use -DOPTDBG=1 to optimize
@@ -140,102 +70,33 @@ else()
   set(OPTIMIZE_DEBUG ${OPTIMIZE_DEBUG_DEFAULT})
 endif()

-if(WIN32)
-  if((${OPTIMIZE_DEBUG} EQUAL 1))
-    message(STATUS "Debug optimization is enabled")
-    set(CMAKE_CXX_FLAGS_DEBUG "/Oxt /MDd")
-  else()
-    set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /Od /RTC1 /Gm /MDd")
-  endif()
-  set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Oxt /Zp8 /Gm- /Gy /MD")
-
-  set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} /DEBUG")
-  set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /DEBUG")
+if((${OPTIMIZE_DEBUG} EQUAL 1))
+   message(STATUS "Debug optimization is enabled")
+   set(CMAKE_CXX_FLAGS_DEBUG "/Oxt /MDd")
+else()
+   set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /Od /RTC1 /Gm /MDd")
 endif()

-if(CMAKE_COMPILER_IS_GNUCXX)
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-builtin-memcmp")
-endif()
+set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Oxt /Zp8 /Gm- /Gy /MD")

-option(ROCKSDB_LITE "Build RocksDBLite version" OFF)
-if(ROCKSDB_LITE)
-  add_definitions(-DROCKSDB_LITE)
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-exceptions")
-endif()
+set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} /DEBUG")
+set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /DEBUG")

-if(CMAKE_SYSTEM_NAME MATCHES "Cygwin")
-  add_definitions(-fno-builtin-memcmp -DCYGWIN)
-elseif(CMAKE_SYSTEM_NAME MATCHES "Darwin")
-  add_definitions(-DOS_MACOSX)
-  if(CMAKE_SYSTEM_PROCESSOR MATCHES arm)
-    add_definitions(-DIOS_CROSS_COMPILE -DROCKSDB_LITE)
-    # no debug info for IOS, that will make our library big
-    add_definitions(-DNDEBUG)
-  endif()
-elseif(CMAKE_SYSTEM_NAME MATCHES "Linux")
-  add_definitions(-DOS_LINUX)
-elseif(CMAKE_SYSTEM_NAME MATCHES "SunOS")
-  add_definitions(-DOS_SOLARIS)
-elseif(CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
-  add_definitions(-DOS_FREEBSD)
-elseif(CMAKE_SYSTEM_NAME MATCHES "NetBSD")
-  add_definitions(-DOS_NETBSD)
-elseif(CMAKE_SYSTEM_NAME MATCHES "OpenBSD")
-  add_definitions(-DOS_OPENBSD)
-elseif(CMAKE_SYSTEM_NAME MATCHES "DragonFly")
-  add_definitions(-DOS_DRAGONFLYBSD)
-elseif(CMAKE_SYSTEM_NAME MATCHES "Android")
-  add_definitions(-DOS_ANDROID)
-elseif(CMAKE_SYSTEM_NAME MATCHES "Windows")
-  add_definitions(-DWIN32 -DOS_WIN -D_MBCS -DWIN64 -DNOMINMAX)
-endif()
-
-if(NOT WIN32)
-  add_definitions(-DROCKSDB_PLATFORM_POSIX -DROCKSDB_LIB_IO_POSIX)
-endif()
-
-option(WITH_FALLOCATE "build with fallocate" ON)
-
-if(WITH_FALLOCATE)
-  include(CheckCSourceCompiles)
-  CHECK_C_SOURCE_COMPILES("
-#include <fcntl.h>
-#include <linux/falloc.h>
-int main() {
- int fd = open(\"/dev/null\", 0);
- fallocate(fd, FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE, 0, 1024);
-}
-" HAVE_FALLOCATE)
-  if(HAVE_FALLOCATE)
-    add_definitions(-DROCKSDB_FALLOCATE_PRESENT)
-  endif()
-endif()
-
-include(CheckFunctionExists)
-CHECK_FUNCTION_EXISTS(malloc_usable_size HAVE_MALLOC_USABLE_SIZE)
-if(HAVE_MALLOC_USABLE_SIZE)
-  add_definitions(-DROCKSDB_MALLOC_USABLE_SIZE)
-endif()
+add_definitions(-DWIN32 -DOS_WIN -D_MBCS -DWIN64 -DNOMINMAX)

 include_directories(${PROJECT_SOURCE_DIR})
 include_directories(${PROJECT_SOURCE_DIR}/include)
-include_directories(SYSTEM ${PROJECT_SOURCE_DIR}/third-party/gtest-1.7.0/fused-src)
-
-find_package(Threads REQUIRED)
-if(WIN32)
-  set(SYSTEM_LIBS ${SYSTEM_LIBS} Shlwapi.lib Rpcrt4.lib)
-else()
-  set(SYSTEM_LIBS ${CMAKE_THREAD_LIBS_INIT})
-endif()
+include_directories(${PROJECT_SOURCE_DIR}/third-party/gtest-1.7.0/fused-src)

 set(ROCKSDB_LIBS rocksdblib${ARTIFACT_SUFFIX})
+set(THIRDPARTY_LIBS ${THIRDPARTY_LIBS} gtest)
+set(SYSTEM_LIBS ${SYSTEM_LIBS} Shlwapi.lib Rpcrt4.lib)
+
 set(LIBS ${ROCKSDB_LIBS} ${THIRDPARTY_LIBS} ${SYSTEM_LIBS})

 add_subdirectory(third-party/gtest-1.7.0/fused-src/gtest)
-add_subdirectory(tools)

 # Main library source code
-
 set(SOURCES
        db/auto_roll_logger.cc
        db/builder.cc
@@ -252,11 +113,11 @@ set(SOURCES
        db/db_impl.cc
        db/db_impl_debug.cc
        db/db_impl_experimental.cc
+        db/db_impl_add_file.cc
        db/db_impl_readonly.cc
        db/db_info_dumper.cc
        db/db_iter.cc
        db/event_helpers.cc
-        db/external_sst_file_ingestion_job.cc
        db/experimental.cc
        db/filename.cc
        db/file_indexer.cc
@@ -272,7 +133,6 @@ set(SOURCES
        db/memtable_list.cc
        db/merge_helper.cc
        db/merge_operator.cc
-        db/range_del_aggregator.cc
        db/repair.cc
        db/snapshot_impl.cc
        db/table_cache.cc
@@ -293,6 +153,12 @@ set(SOURCES
        memtable/skiplistrep.cc
        memtable/vectorrep.cc
        port/stack_trace.cc
+        port/win/io_win.cc
+        port/win/env_win.cc
+        port/win/env_default.cc
+        port/win/port_win.cc
+        port/win/win_logger.cc
+        port/win/xpress_win.cc
        table/adaptive_table_factory.cc
        table/block.cc
        table/block_based_filter_block.cc
@@ -326,14 +192,12 @@ set(SOURCES
        tools/dump/db_dump_tool.cc
        util/arena.cc
        util/bloom.cc
-        util/cf_options.cc
-        util/clock_cache.cc
+        util/build_version.cc
        util/coding.cc
        util/compaction_job_stats_impl.cc
        util/comparator.cc
        util/concurrent_arena.cc
        util/crc32c.cc
-        util/db_options.cc
        util/delete_scheduler.cc
        util/dynamic_bloom.cc
        util/env.cc
@@ -356,6 +220,7 @@ set(SOURCES
        util/log_buffer.cc
        util/memenv.cc
        util/murmurhash.cc
+        util/mutable_cf_options.cc
        util/options.cc
        util/options_helper.cc
        util/options_parser.cc
@@ -371,9 +236,10 @@ set(SOURCES
        util/status_message.cc
        util/string_util.cc
        util/sync_point.cc
+        util/testharness.cc
        util/testutil.cc
        util/thread_local.cc
-        util/threadpool_imp.cc
+        util/threadpool.cc
        util/thread_status_impl.cc
        util/thread_status_updater.cc
        util/thread_status_util.cc
@@ -382,15 +248,14 @@ set(SOURCES
        util/xfunc.cc
        util/xxhash.cc
        utilities/backupable/backupable_db.cc
-        utilities/blob_db/blob_db.cc
        utilities/checkpoint/checkpoint.cc
        utilities/compaction_filters/remove_emptyvalue_compactionfilter.cc
-        utilities/date_tiered/date_tiered_db_impl.cc
        utilities/document/document_db.cc
        utilities/document/json_document.cc
        utilities/document/json_document_builder.cc
        utilities/env_mirror.cc
        utilities/env_registry.cc
+        utilities/flashcache/flashcache.cc
        utilities/geodb/geodb_impl.cc
        utilities/leveldb_options/leveldb_options.cc
        utilities/memory/memory_util.cc
@@ -399,11 +264,7 @@ set(SOURCES
        utilities/merge_operators/put.cc
        utilities/merge_operators/max.cc
        utilities/merge_operators/uint64add.cc
-        utilities/option_change_migration/option_change_migration.cc
        utilities/options/options_util.cc
-        utilities/persistent_cache/block_cache_tier.cc
-        utilities/persistent_cache/block_cache_tier_file.cc
-        utilities/persistent_cache/block_cache_tier_metadata.cc
        utilities/persistent_cache/persistent_cache_tier.cc
        utilities/persistent_cache/volatile_tier_impl.cc
        utilities/redis/redis_lists.cc
@@ -421,59 +282,55 @@ set(SOURCES
        utilities/ttl/db_ttl_impl.cc
        utilities/write_batch_with_index/write_batch_with_index.cc
        utilities/write_batch_with_index/write_batch_with_index_internal.cc
-        utilities/col_buf_encoder.cc
-        utilities/col_buf_decoder.cc
-        utilities/column_aware_encoding_util.cc
-        $<TARGET_OBJECTS:build_version>)
+)

-if(WIN32)
-  list(APPEND SOURCES
-    port/win/io_win.cc
-    port/win/env_win.cc
-    port/win/env_default.cc
-    port/win/port_win.cc
-    port/win/win_logger.cc
-    port/win/xpress_win.cc)
-else()
-  list(APPEND SOURCES
-    port/port_posix.cc
-    util/env_posix.cc
-    util/io_posix.cc)
-endif()
+# For test util library that is build only in DEBUG mode
+# and linked to tests. Add test only code that is not #ifdefed for Release here.
+set(TESTUTIL_SOURCE
+    db/db_test_util.cc
+    table/mock_table.cc
+    util/mock_env.cc
+    util/fault_injection_test_env.cc
+    util/thread_status_updater_debug.cc
+)

-option(WITH_LIBRADOS "Build with librados" OFF)
-if(WITH_LIBRADOS)
-  list(APPEND SOURCES
-    utilities/env_librados.cc)
-  list(APPEND THIRDPARTY_LIBS rados)
-endif()
-
-add_library(rocksdblib${ARTIFACT_SUFFIX} STATIC ${SOURCES})
-target_link_libraries(rocksdblib${ARTIFACT_SUFFIX}
-  ${THIRDPARTY_LIBS} ${SYSTEM_LIBS})
-
-if(WIN32)
-  set_target_properties(rocksdblib${ARTIFACT_SUFFIX} PROPERTIES
-    COMPILE_FLAGS "/Fd${CMAKE_CFG_INTDIR}/rocksdblib${ARTIFACT_SUFFIX}.pdb")
-endif()
+add_library(rocksdblib${ARTIFACT_SUFFIX} ${SOURCES})
+set_target_properties(rocksdblib${ARTIFACT_SUFFIX} PROPERTIES COMPILE_FLAGS "/Fd${CMAKE_CFG_INTDIR}/rocksdblib${ARTIFACT_SUFFIX}.pdb")
+add_dependencies(rocksdblib${ARTIFACT_SUFFIX} GenerateBuildVersion)

 add_library(rocksdb${ARTIFACT_SUFFIX} SHARED ${SOURCES})
-target_link_libraries(rocksdb${ARTIFACT_SUFFIX}
-  ${THIRDPARTY_LIBS} ${SYSTEM_LIBS})
+set_target_properties(rocksdb${ARTIFACT_SUFFIX} PROPERTIES COMPILE_FLAGS "-DROCKSDB_DLL -DROCKSDB_LIBRARY_EXPORTS /Fd${CMAKE_CFG_INTDIR}/rocksdb${ARTIFACT_SUFFIX}.pdb")
+add_dependencies(rocksdb${ARTIFACT_SUFFIX} GenerateBuildVersion)
+target_link_libraries(rocksdb${ARTIFACT_SUFFIX} ${LIBS})

-if(WIN32)
-  set_target_properties(rocksdb${ARTIFACT_SUFFIX} PROPERTIES
-    COMPILE_FLAGS "-DROCKSDB_DLL -DROCKSDB_LIBRARY_EXPORTS /Fd${CMAKE_CFG_INTDIR}/rocksdb${ARTIFACT_SUFFIX}.pdb")
-endif()
-
-option(WITH_JNI "build with JNI" OFF)
-if(WITH_JNI OR JNI)
-  message(STATUS "JNI library is enabled")
-  add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/java)
+if (DEFINED JNI)
+  if (${JNI} EQUAL 1)
+    message(STATUS "JNI library is enabled")
+    add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/java)
+  else()
+    message(STATUS "JNI library is disabled")
+  endif()
 else()
  message(STATUS "JNI library is disabled")
 endif()

+set(APPS
+        tools/db_bench.cc
+        db/memtablerep_bench.cc
+        table/table_reader_bench.cc
+        tools/db_stress.cc
+        tools/write_stress.cc
+        tools/db_repl_stress.cc
+        tools/ldb.cc
+        tools/sst_dump.cc
+        tools/dump/rocksdb_dump.cc
+        tools/dump/rocksdb_undump.cc
+        util/cache_bench.cc
+        utilities/persistent_cache/hash_table_bench.cc
+)
+
+set(C_TESTS db/c_test.c)
+
 set(TESTS
        db/auto_roll_logger_test.cc
        db/column_family_test.cc
@@ -502,7 +359,6 @@ set(TESTS
        db/db_flush_test.cc
        db/db_iterator_test.cc
        db/db_sst_test.cc
-        db/external_sst_file_test.cc
        db/db_universal_compaction_test.cc
        db/db_wal_test.cc
        db/dbformat_test.cc
@@ -540,6 +396,7 @@ set(TESTS
        table/full_filter_block_test.cc
        table/merger_test.cc
        table/table_test.cc
+        tools/db_sanity_test.cc
        tools/ldb_cmd_test.cc
        tools/reduce_levels_test.cc
        tools/sst_dump_test.cc
@@ -559,7 +416,6 @@ set(TESTS
        util/heap_test.cc
        util/histogram_test.cc
        util/iostats_context_test.cc
-        util/lru_cache_test.cc
        util/mock_env_test.cc
        util/options_settable_test.cc
        util/options_test.cc
@@ -569,16 +425,13 @@ set(TESTS
        util/thread_list_test.cc
        util/thread_local_test.cc
        utilities/backupable/backupable_db_test.cc
-        utilities/blob_db/blob_db_test.cc
        utilities/checkpoint/checkpoint_test.cc
-        utilities/date_tiered/date_tiered_test.cc
        utilities/document/document_db_test.cc
        utilities/document/json_document_test.cc
        utilities/env_registry_test.cc
        utilities/geodb/geodb_test.cc
        utilities/memory/memory_test.cc
        utilities/merge_operators/string_append/stringappend_test.cc
-        utilities/option_change_migration/option_change_migration_test.cc
        utilities/options/options_util_test.cc
        utilities/persistent_cache/hash_table_test.cc
        utilities/persistent_cache/persistent_cache_test.cc
@@ -589,44 +442,21 @@ set(TESTS
        utilities/transactions/transaction_test.cc
        utilities/ttl/ttl_test.cc
        utilities/write_batch_with_index/write_batch_with_index_test.cc
-        utilities/column_aware_encoding_test.cc
 )
-if(WITH_LIBRADOS)
-  list(APPEND TESTS utilities/env_librados_test.cc)
-endif()

-set(BENCHMARKS
-  tools/db_bench.cc
-  table/table_reader_bench.cc
-  util/cache_bench.cc
-  db/memtablerep_bench.cc
-  utilities/column_aware_encoding_exp.cc
-  utilities/persistent_cache/hash_table_bench.cc)
-add_library(testharness OBJECT util/testharness.cc)
-foreach(sourcefile ${BENCHMARKS})
-  get_filename_component(exename ${sourcefile} NAME_WE)
-  add_executable(${exename}${ARTIFACT_SUFFIX} ${sourcefile}
-    $<TARGET_OBJECTS:testharness>)
-  target_link_libraries(${exename}${ARTIFACT_SUFFIX} ${LIBS} gtest)
-endforeach(sourcefile ${BENCHMARKS})
+set(EXES ${APPS})
+
+foreach(sourcefile ${EXES})
+    string(REPLACE ".cc" "" exename ${sourcefile})
+    string(REGEX REPLACE "^((.+)/)+" "" exename ${exename})
+    add_executable(${exename}${ARTIFACT_SUFFIX} ${sourcefile})
+    target_link_libraries(${exename}${ARTIFACT_SUFFIX} ${LIBS})
+endforeach(sourcefile ${EXES})

-# For test util library that is build only in DEBUG mode
-# and linked to tests. Add test only code that is not #ifdefed for Release here.
-set(TESTUTIL_SOURCE
-    db/db_test_util.cc
-    table/mock_table.cc
-    util/mock_env.cc
-    util/fault_injection_test_env.cc
-    util/thread_status_updater_debug.cc
-)
 # test utilities are only build in debug
-enable_testing()
-add_custom_target(check COMMAND ${CMAKE_CTEST_COMMAND})
 set(TESTUTILLIB testutillib${ARTIFACT_SUFFIX})
 add_library(${TESTUTILLIB} STATIC ${TESTUTIL_SOURCE})
-if(WIN32)
-  set_target_properties(${TESTUTILLIB} PROPERTIES COMPILE_FLAGS "/Fd${CMAKE_CFG_INTDIR}/testutillib${ARTIFACT_SUFFIX}.pdb")
-endif()
+set_target_properties(${TESTUTILLIB} PROPERTIES COMPILE_FLAGS "/Fd${CMAKE_CFG_INTDIR}/testutillib${ARTIFACT_SUFFIX}.pdb")
 set_target_properties(${TESTUTILLIB}
      PROPERTIES EXCLUDE_FROM_DEFAULT_BUILD_RELEASE 1
      EXCLUDE_FROM_DEFAULT_BUILD_MINRELEASE 1
@@ -637,23 +467,18 @@ set_target_properties(${TESTUTILLIB}
 set(TEST_EXES ${TESTS})

 foreach(sourcefile ${TEST_EXES})
-    get_filename_component(exename ${sourcefile} NAME_WE)
-    add_executable(${exename}${ARTIFACT_SUFFIX} ${sourcefile}
-      $<TARGET_OBJECTS:testharness>)
+    string(REPLACE ".cc" "" exename ${sourcefile})
+    string(REGEX REPLACE "^((.+)/)+" "" exename ${exename})
+    add_executable(${exename}${ARTIFACT_SUFFIX} ${sourcefile})
    set_target_properties(${exename}${ARTIFACT_SUFFIX}
      PROPERTIES EXCLUDE_FROM_DEFAULT_BUILD_RELEASE 1
      EXCLUDE_FROM_DEFAULT_BUILD_MINRELEASE 1
      EXCLUDE_FROM_DEFAULT_BUILD_RELWITHDEBINFO 1
      )
-    target_link_libraries(${exename}${ARTIFACT_SUFFIX} testutillib${ARTIFACT_SUFFIX} ${LIBS} gtest)
-    if(NOT "${exename}" MATCHES "db_sanity_test")
-      add_test(NAME ${exename} COMMAND ${exename}${ARTIFACT_SUFFIX})
-      add_dependencies(check ${exename}${ARTIFACT_SUFFIX})
-    endif()
+    target_link_libraries(${exename}${ARTIFACT_SUFFIX} ${LIBS} testutillib${ARTIFACT_SUFFIX})
 endforeach(sourcefile ${TEST_EXES})

 # C executables must link to a shared object
-set(C_TESTS db/c_test.c)
 set(C_TEST_EXES ${C_TESTS})

 foreach(sourcefile ${C_TEST_EXES})
@@ -666,6 +491,4 @@ foreach(sourcefile ${C_TEST_EXES})
      EXCLUDE_FROM_DEFAULT_BUILD_RELWITHDEBINFO 1
      )
    target_link_libraries(${exename}${ARTIFACT_SUFFIX} rocksdb${ARTIFACT_SUFFIX} testutillib${ARTIFACT_SUFFIX})
-    add_test(NAME ${exename} COMMAND ${exename}${ARTIFACT_SUFFIX})
-    add_dependencies(check ${exename}${ARTIFACT_SUFFIX})
 endforeach(sourcefile ${C_TEST_EXES})
@@ -1,44 +1,12 @@
-# Rocksdb Change Log
-## 4.13.5
-### Public API Change
-* Fix a regression in compaction performance.
-* Disallow calling IngestExternalFile() on a dropped column family.
-* Add EventListener::OnExternalFileIngested() event that will be called for files that are successfully ingested.
+## 4.10.2
+### Bug Fixes
+* backport the bug fix of the regression data corruption after DB recovery when stale WAL file deletion is reordered.

-## 4.13.4
-### Public API Change
-* Removed flashcache support.
+## 4.10.1
+### Bug Fixes
+* Fix the regression deadlock bug of DB recovery if options.max_successive_merges hits.

-## 4.13.0 (10/18/2016)
-### Public API Change
-* DB::GetOptions() reflect dynamic changed options (i.e. through DB::SetOptions()) and return copy of options instead of reference.
-* Added Statistics::getAndResetTickerCount().
-
-### New Features
-* Add DB::SetDBOptions() to dynamic change base_background_compactions and max_background_compactions.
-* Added Iterator::SeekForPrev(). This new API will seek to the last key that less than or equal to the target key.
-
-## 4.12.0 (9/12/2016)
-### Public API Change
-* CancelAllBackgroundWork() flushes all memtables for databases containing writes that have bypassed the WAL (writes issued with WriteOptions::disableWAL=true) before shutting down background threads.
-* Merge options source_compaction_factor, max_grandparent_overlap_bytes and expanded_compaction_factor into max_compaction_bytes.
-* Remove ImmutableCFOptions.
-* Add a compression type ZSTD, which can work with ZSTD 0.8.0 or up. Still keep ZSTDNotFinal for compatibility reasons.
-
-### New Features
-* Introduce NewClockCache, which is based on CLOCK algorithm with better concurrent performance in some cases. It can be used to replace the default LRU-based block cache and table cache. To use it, RocksDB need to be linked with TBB lib.
-* Change ticker/histogram statistics implementations to accumulate data in thread-local storage, which improves CPU performance by reducing cache coherency costs. Callers of CreateDBStatistics do not need to change anything to use this feature.
-* Block cache mid-point insertion, where index and filter block are inserted into LRU block cache with higher priority. The feature can be enabled by setting BlockBasedTableOptions::cache_index_and_filter_blocks_with_high_priority to true and high_pri_pool_ratio > 0 when creating NewLRUCache.
-
-## 4.11.0 (8/1/2016)
-### Public API Change
-* options.memtable_prefix_bloom_huge_page_tlb_size => memtable_huge_page_size. When it is set, RocksDB will try to allocate memory from huge page for memtable too, rather than just memtable bloom filter.
-
-### New Features
-* A tool to migrate DB after options change. See include/rocksdb/utilities/option_change_migration.h.
-* Add ReadOptions.background_purge_on_iterator_cleanup. If true, we avoid file deletion when destorying iterators.
-
-## 4.10.0 (7/5/2016)
+## 4.10.0
 ### Public API Change
 * options.memtable_prefix_bloom_bits changes to options.memtable_prefix_bloom_bits_ratio and deprecate options.memtable_prefix_bloom_probes
 * enum type CompressionType and PerfLevel changes from char to unsigned char. Value of all PerfLevel shift by one.
@@ -130,12 +130,8 @@ am__v_AR_ = $(am__v_AR_$(AM_DEFAULT_VERBOSITY))
 am__v_AR_0 = @echo "  AR      " $@;
 am__v_AR_1 =

-ifdef ROCKSDB_USE_LIBRADOS
-LIB_SOURCES += utilities/env_librados.cc
-LDFLAGS += -lrados
-endif
-
 AM_LINK = $(AM_V_CCLD)$(CXX) $^ $(EXEC_LDFLAGS) -o $@ $(LDFLAGS) $(COVERAGEFLAGS)
+
 # detect what platform we're building on
 dummy := $(shell (export ROCKSDB_ROOT="$(CURDIR)"; "$(CURDIR)/build_tools/build_detect_platform" "$(CURDIR)/make_config.mk"))
 # this file is generated by the previous line to set build flags and sources
@@ -264,8 +260,6 @@ VALGRIND_OPTS = --error-exitcode=$(VALGRIND_ERROR) --leak-check=full

 BENCHTOOLOBJECTS = $(BENCH_LIB_SOURCES:.cc=.o) $(LIBOBJECTS) $(TESTUTIL)

-EXPOBJECTS = $(EXP_LIB_SOURCES:.cc=.o) $(LIBOBJECTS) $(TESTUTIL)
-
 TESTS = \
 	db_test \
 	db_test2 \
@@ -281,7 +275,6 @@ TESTS = \
 	db_iterator_test \
 	db_options_test \
 	db_sst_test \
-	external_sst_file_test \
 	db_tailing_iter_test \
 	db_universal_compaction_test \
 	db_wal_test \
@@ -333,9 +326,7 @@ TESTS = \
 	skiplist_test \
 	stringappend_test \
 	ttl_test \
-	date_tiered_test \
 	backupable_db_test \
-	blob_db_test \
 	document_db_test \
 	json_document_test \
 	sim_cache_test \
@@ -368,7 +359,6 @@ TESTS = \
 	compaction_job_test \
 	thread_list_test \
 	sst_dump_test \
-	column_aware_encoding_test \
 	compact_files_test \
 	perf_context_test \
 	optimistic_transaction_test \
@@ -376,23 +366,19 @@ TESTS = \
 	heap_test \
 	compact_on_deletion_collector_test \
 	compaction_job_stats_test \
-	option_change_migration_test \
 	transaction_test \
 	ldb_cmd_test \
 	iostats_context_test \
 	persistent_cache_test \
 	statistics_test \
-	lru_cache_test \

 PARALLEL_TEST = \
 	backupable_db_test \
+	compact_on_deletion_collector_test \
 	db_compaction_filter_test \
 	db_compaction_test \
-	db_sst_test \
 	db_test \
 	db_universal_compaction_test \
-	db_wal_test \
-	external_sst_file_test \
 	fault_injection_test \
 	inlineskiplist_test \
 	manual_compaction_test \
@@ -421,7 +407,7 @@ TEST_LIBS = \
 	librocksdb_env_basic_test.a

 # TODO: add back forward_iterator_bench, after making it build in all environemnts.
-BENCHMARKS = db_bench table_reader_bench cache_bench memtablerep_bench column_aware_encoding_exp persistent_cache_bench
+BENCHMARKS = db_bench table_reader_bench cache_bench memtablerep_bench

 # if user didn't config LIBNAME, set the default
 ifeq ($(LIBNAME),)
@@ -569,7 +555,7 @@ $(parallel_tests): $(PARALLEL_TEST)
      '#!/bin/sh' \
      "d=\$(TMPD)$$TEST_SCRIPT" \
      'mkdir -p $$d' \
-      "TEST_TMPDIR=\$$d $(DRIVER) ./$$TEST_BINARY --gtest_filter=$$TEST_NAME" \
+			"TEST_TMPDIR=\$$d ./$$TEST_BINARY --gtest_filter=$$TEST_NAME" \
 		> $$TEST_SCRIPT; \
 		chmod a=rx $$TEST_SCRIPT; \
 	done
@@ -596,7 +582,7 @@ gen_parallel_tests:
 # 107.816 PASS t/DBTest.EncodeDecompressedBlockSizeTest
 #
 slow_test_regexp = \
-	^t/run-table_test-HarnessTest.Randomized$$|^t/run-db_test-.*(?:FileCreationRandomFailure|EncodeDecompressedBlockSizeTest)$$|^.*RecoverFromCorruptedWALWithoutFlush$$
+	^t/run-table_test-HarnessTest.Randomized$$|^t/run-db_test-.*(?:FileCreationRandomFailure|EncodeDecompressedBlockSizeTest)$$
 prioritize_long_running_tests =						\
  perl -pe 's,($(slow_test_regexp)),100 $$1,'				\
    | sort -k1,1gr							\
@@ -626,7 +612,7 @@ check_0:
 	} \
 	  | $(prioritize_long_running_tests)				\
 	  | grep -E '$(tests-regexp)'					\
-	  | build_tools/gnu_parallel -j$(J) --plain --joblog=LOG $$eta --gnu '{} >& t/log-{/}'
+	  | parallel -j$(J) --joblog=LOG $$eta --gnu '{} >& t/log-{/}'

 .PHONY: valgrind_check_0
 valgrind_check_0:
@@ -641,9 +627,9 @@ valgrind_check_0:
 	}								\
 	  | $(prioritize_long_running_tests)				\
 	  | grep -E '$(tests-regexp)'					\
-	  | build_tools/gnu_parallel -j$(J) --plain --joblog=LOG $$eta --gnu \
-	  '(if [[ "{}" == "./"* ]] ; then $(DRIVER) {}; else {}; fi) ' \
-	  '>& t/valgrind_log-{/}'
+	  | parallel -j$(J) --joblog=LOG $$eta --gnu \
+      'if [[ "{}" == "./"* ]] ; then $(DRIVER) {} >& t/valgrind_log-{/}; ' \
+      'else {} >& t/valgrind_log-{/}; fi'

 CLEAN_FILES += t LOG $(TMPD)

@@ -662,7 +648,7 @@ watch-log:
 check: all
 	$(MAKE) gen_parallel_tests
 	$(AM_V_GEN)if test "$(J)" != 1                                  \
-	    && (build_tools/gnu_parallel --gnu --help 2>/dev/null) |                    \
+	    && (parallel --gnu --help 2>/dev/null) |                    \
 	        grep -q 'GNU Parallel';                                 \
 	then                                                            \
 	    $(MAKE) T="$$t" TMPD=$(TMPD) check_0;                       \
@@ -689,15 +675,9 @@ blackbox_crash_test: db_stress
 	python -u tools/db_crashtest.py --simple blackbox
 	python -u tools/db_crashtest.py blackbox

-ifeq ($(CRASH_TEST_KILL_ODD),)
-  CRASH_TEST_KILL_ODD=888887
-endif
-
 whitebox_crash_test: db_stress
-	python -u tools/db_crashtest.py --simple whitebox --random_kill_odd \
-      $(CRASH_TEST_KILL_ODD)
-	python -u tools/db_crashtest.py whitebox  --random_kill_odd \
-      $(CRASH_TEST_KILL_ODD)
+	python -u tools/db_crashtest.py --simple whitebox
+	python -u tools/db_crashtest.py whitebox

 asan_check:
 	$(MAKE) clean
@@ -720,9 +700,9 @@ ubsan_crash_test:
 	$(MAKE) clean

 valgrind_check: $(TESTS)
-	$(MAKE) DRIVER="$(VALGRIND_VER) $(VALGRIND_OPTS)" gen_parallel_tests
+	$(MAKE) gen_parallel_tests
 	$(AM_V_GEN)if test "$(J)" != 1                                  \
-	    && (build_tools/gnu_parallel --gnu --help 2>/dev/null) |                    \
+	    && (parallel --gnu --help 2>/dev/null) |                    \
 	        grep -q 'GNU Parallel';                                 \
 	then                                                            \
      $(MAKE) TMPD=$(TMPD)                                        \
@@ -744,10 +724,10 @@ parloop:
 	for t in $(PAR_TEST); do		\
 		echo "===== Running $$t in parallel $(NUM_PAR)";\
 		if [ $(db_test) -eq 1 ]; then \
-			seq $(J) | v="$$t" build_tools/gnu_parallel --gnu --plain 's=$(TMPD)/rdb-{};  export TEST_TMPDIR=$$s;' \
+			seq $(J) | v="$$t" parallel --gnu 's=$(TMPD)/rdb-{};  export TEST_TMPDIR=$$s;' \
 				'timeout 2m ./db_test --gtest_filter=$$v >> $$s/log-{} 2>1'; \
 		else\
-			seq $(J) | v="./$$t" build_tools/gnu_parallel --gnu --plain 's=$(TMPD)/rdb-{};' \
+			seq $(J) | v="./$$t" parallel --gnu 's=$(TMPD)/rdb-{};' \
 			     'export TEST_TMPDIR=$$s; timeout 10m $$v >> $$s/log-{} 2>1'; \
 		fi; \
 		ret_code=$$?; \
@@ -768,7 +748,7 @@ test_names = \

 parallel_check: $(TESTS)
 	$(AM_V_GEN)if test "$(J)" > 1                                  \
-	    && (build_tools/gnu_parallel --gnu --help 2>/dev/null) |                    \
+	    && (parallel --gnu --help 2>/dev/null) |                    \
 	        grep -q 'GNU Parallel';                                 \
 	then                                                            \
 	    echo Running in parallel $(J);			\
@@ -778,7 +758,7 @@ parallel_check: $(TESTS)
 	ret_bad=0;							\
 	echo $(J);\
 	echo Test Dir: $(TMPD); \
-        seq $(J) | build_tools/gnu_parallel --gnu --plain 's=$(TMPD)/rdb-{}; rm -rf $$s; mkdir $$s'; \
+        seq $(J) | parallel --gnu 's=$(TMPD)/rdb-{}; rm -rf $$s; mkdir $$s'; \
 	$(MAKE)  PAR_TEST="$(shell $(test_names))" TMPD=$(TMPD) \
 		J=$(J) db_test=1 parloop; \
 	$(MAKE) PAR_TEST="$(filter-out db_test, $(TESTS))" \
@@ -817,7 +797,6 @@ clean:
 	find . -name "*.[oda]" -exec rm -f {} \;
 	find . -type f -regex ".*\.\(\(gcda\)\|\(gcno\)\)" -exec rm {} \;
 	rm -rf bzip2* snappy* zlib* lz4*
-	cd java; $(MAKE) clean

 tags:
 	ctags * -R
@@ -850,9 +829,6 @@ db_bench: tools/db_bench.o $(BENCHTOOLOBJECTS)
 cache_bench: util/cache_bench.o $(LIBOBJECTS) $(TESTUTIL)
 	$(AM_LINK)

-persistent_cache_bench: utilities/persistent_cache/persistent_cache_bench.o $(LIBOBJECTS) $(TESTUTIL)
-	$(AM_LINK)
-
 memtablerep_bench: db/memtablerep_bench.o $(LIBOBJECTS) $(TESTUTIL)
 	$(AM_LINK)

@@ -874,7 +850,7 @@ arena_test: util/arena_test.o $(LIBOBJECTS) $(TESTHARNESS)
 autovector_test: util/autovector_test.o $(LIBOBJECTS) $(TESTHARNESS)
 	$(AM_LINK)

-column_family_test: db/column_family_test.o db/db_test_util.o $(LIBOBJECTS) $(TESTHARNESS)
+column_family_test: db/column_family_test.o $(LIBOBJECTS) $(TESTHARNESS)
 	$(AM_LINK)

 table_properties_collector_test: db/table_properties_collector_test.o $(LIBOBJECTS) $(TESTHARNESS)
@@ -895,9 +871,6 @@ cache_test: util/cache_test.o $(LIBOBJECTS) $(TESTHARNESS)
 coding_test: util/coding_test.o $(LIBOBJECTS) $(TESTHARNESS)
 	$(AM_LINK)

-option_change_migration_test: utilities/option_change_migration/option_change_migration_test.o db/db_test_util.o $(LIBOBJECTS) $(TESTHARNESS)
-	$(AM_LINK)
-
 stringappend_test: utilities/merge_operators/string_append/stringappend_test.o $(LIBOBJECTS) $(TESTHARNESS)
 	$(AM_LINK)

@@ -961,9 +934,6 @@ db_options_test: db/db_options_test.o db/db_test_util.o $(LIBOBJECTS) $(TESTHARN
 db_sst_test: db/db_sst_test.o db/db_test_util.o $(LIBOBJECTS) $(TESTHARNESS)
 	$(AM_LINK)

-external_sst_file_test: db/external_sst_file_test.o db/db_test_util.o $(LIBOBJECTS) $(TESTHARNESS)
-	$(AM_LINK)
-
 db_tailing_iter_test: db/db_tailing_iter_test.o db/db_test_util.o $(LIBOBJECTS) $(TESTHARNESS)
 	$(AM_LINK)

@@ -1006,9 +976,6 @@ prefix_test: db/prefix_test.o $(LIBOBJECTS) $(TESTHARNESS)
 backupable_db_test: utilities/backupable/backupable_db_test.o $(LIBOBJECTS) $(TESTHARNESS)
 	$(AM_LINK)

-blob_db_test: utilities/blob_db/blob_db_test.o $(LIBOBJECTS) $(TESTHARNESS)
-	$(AM_LINK)
-
 checkpoint_test: utilities/checkpoint/checkpoint_test.o $(LIBOBJECTS) $(TESTHARNESS)
 	$(AM_LINK)

@@ -1027,20 +994,12 @@ spatial_db_test: utilities/spatialdb/spatial_db_test.o $(LIBOBJECTS) $(TESTHARNE
 env_mirror_test: utilities/env_mirror_test.o $(LIBOBJECTS) $(TESTHARNESS)
 	$(AM_LINK)

-ifdef ROCKSDB_USE_LIBRADOS
-env_librados_test: utilities/env_librados_test.o $(LIBOBJECTS) $(TESTHARNESS)
-	$(AM_V_CCLD)$(CXX) $^ $(EXEC_LDFLAGS) -o $@ $(LDFLAGS) $(COVERAGEFLAGS)
-endif
-
 env_registry_test: utilities/env_registry_test.o $(LIBOBJECTS) $(TESTHARNESS)
 	$(AM_LINK)

 ttl_test: utilities/ttl/ttl_test.o $(LIBOBJECTS) $(TESTHARNESS)
 	$(AM_LINK)

-date_tiered_test: utilities/date_tiered/date_tiered_test.o $(LIBOBJECTS) $(TESTHARNESS)
-	$(AM_LINK)
-
 write_batch_with_index_test: utilities/write_batch_with_index/write_batch_with_index_test.o $(LIBOBJECTS) $(TESTHARNESS)
 	$(AM_LINK)

@@ -1197,9 +1156,6 @@ event_logger_test: util/event_logger_test.o $(LIBOBJECTS) $(TESTHARNESS)
 sst_dump_test: tools/sst_dump_test.o $(LIBOBJECTS) $(TESTHARNESS)
 	$(AM_LINK)

-column_aware_encoding_test: utilities/column_aware_encoding_test.o $(TESTHARNESS) $(EXPOBJECTS)
-	$(AM_LINK)
-
 optimistic_transaction_test: utilities/transactions/optimistic_transaction_test.o $(LIBOBJECTS) $(TESTHARNESS)
 	$(AM_LINK)

@@ -1230,9 +1186,6 @@ transaction_test: utilities/transactions/transaction_test.o $(LIBOBJECTS) $(TEST
 sst_dump: tools/sst_dump.o $(LIBOBJECTS)
 	$(AM_LINK)

-column_aware_encoding_exp: utilities/column_aware_encoding_exp.o $(EXPOBJECTS)
-	$(AM_LINK)
-
 repair_test: db/repair_test.o db/db_test_util.o $(LIBOBJECTS) $(TESTHARNESS)
 	$(AM_LINK)

@@ -1251,10 +1204,6 @@ persistent_cache_test: utilities/persistent_cache/persistent_cache_test.o  db/db
 statistics_test: util/statistics_test.o $(LIBOBJECTS) $(TESTHARNESS)
 	$(AM_LINK)

-lru_cache_test: util/lru_cache_test.o $(LIBOBJECTS) $(TESTHARNESS)
-	$(AM_LINK)
-
-
 #-------------------------------------------------
 # make install related stuff
 INSTALL_PATH ?= /usr/local
@@ -1325,29 +1274,29 @@ endif

 libz.a:
 	-rm -rf zlib-1.2.8
-	curl -O -L http://zlib.net/zlib-1.2.8.tar.gz
+	curl -O http://zlib.net/zlib-1.2.8.tar.gz
 	tar xvzf zlib-1.2.8.tar.gz
 	cd zlib-1.2.8 && CFLAGS='-fPIC' ./configure --static && make
 	cp zlib-1.2.8/libz.a .

 libbz2.a:
 	-rm -rf bzip2-1.0.6
-	curl -O -L http://www.bzip.org/1.0.6/bzip2-1.0.6.tar.gz
+	curl -O  http://www.bzip.org/1.0.6/bzip2-1.0.6.tar.gz
 	tar xvzf bzip2-1.0.6.tar.gz
 	cd bzip2-1.0.6 && make CFLAGS='-fPIC -O2 -g -D_FILE_OFFSET_BITS=64'
 	cp bzip2-1.0.6/libbz2.a .

 libsnappy.a:
-	-rm -rf snappy-1.1.3
-	curl -O -L https://github.com/google/snappy/releases/download/1.1.3/snappy-1.1.3.tar.gz
-	tar xvzf snappy-1.1.3.tar.gz
-	cd snappy-1.1.3 && ./configure --with-pic --enable-static
-	cd snappy-1.1.3 && make
-	cp snappy-1.1.3/.libs/libsnappy.a .
+	-rm -rf snappy-1.1.1
+	curl -O https://snappy.googlecode.com/files/snappy-1.1.1.tar.gz
+	tar xvzf snappy-1.1.1.tar.gz
+	cd snappy-1.1.1 && ./configure --with-pic --enable-static
+	cd snappy-1.1.1 && make
+	cp snappy-1.1.1/.libs/libsnappy.a .

 liblz4.a:
 	   -rm -rf lz4-r127
-	   curl -O -L https://codeload.github.com/Cyan4973/lz4/tar.gz/r127
+	   curl -O https://codeload.github.com/Cyan4973/lz4/tar.gz/r127
 	   mv r127 lz4-r127.tar.gz
 	   tar xvzf lz4-r127.tar.gz
 	   cd lz4-r127/lib && make CFLAGS='-fPIC' all
@@ -1358,7 +1307,7 @@ java_static_libobjects = $(patsubst %,jls/%,$(LIBOBJECTS))
 CLEAN_FILES += jls

 JAVA_STATIC_FLAGS = -DZLIB -DBZIP2 -DSNAPPY -DLZ4
-JAVA_STATIC_INCLUDES = -I./zlib-1.2.8 -I./bzip2-1.0.6 -I./snappy-1.1.3 -I./lz4-r127/lib
+JAVA_STATIC_INCLUDES = -I./zlib-1.2.8 -I./bzip2-1.0.6 -I./snappy-1.1.1 -I./lz4-r127/lib

 $(java_static_libobjects): jls/%.o: %.cc libz.a libbz2.a libsnappy.a liblz4.a
 	$(AM_V_CC)mkdir -p $(@D) && $(CXX) $(CXXFLAGS) $(JAVA_STATIC_FLAGS) $(JAVA_STATIC_INCLUDES) -fPIC -c $< -o $@ $(COVERAGEFLAGS)
@@ -1383,15 +1332,12 @@ rocksdbjavastaticrelease: rocksdbjavastatic
 	cd java/target;jar -uf $(ROCKSDB_JAR_ALL) librocksdbjni-*.so librocksdbjni-*.jnilib
 	cd java/target/classes;jar -uf ../$(ROCKSDB_JAR_ALL) org/rocksdb/*.class org/rocksdb/util/*.class

-rocksdbjavastaticpublish: rocksdbjavastaticrelease rocksdbjavastaticpublishcentral
-
-rocksdbjavastaticpublishcentral:
+rocksdbjavastaticpublish: rocksdbjavastaticrelease
 	mvn gpg:sign-and-deploy-file -Durl=https://oss.sonatype.org/service/local/staging/deploy/maven2/ -DrepositoryId=sonatype-nexus-staging -DpomFile=java/rocksjni.pom -Dfile=java/target/rocksdbjni-$(ROCKSDB_MAJOR).$(ROCKSDB_MINOR).$(ROCKSDB_PATCH)-javadoc.jar -Dclassifier=javadoc
 	mvn gpg:sign-and-deploy-file -Durl=https://oss.sonatype.org/service/local/staging/deploy/maven2/ -DrepositoryId=sonatype-nexus-staging -DpomFile=java/rocksjni.pom -Dfile=java/target/rocksdbjni-$(ROCKSDB_MAJOR).$(ROCKSDB_MINOR).$(ROCKSDB_PATCH)-sources.jar -Dclassifier=sources
 	mvn gpg:sign-and-deploy-file -Durl=https://oss.sonatype.org/service/local/staging/deploy/maven2/ -DrepositoryId=sonatype-nexus-staging -DpomFile=java/rocksjni.pom -Dfile=java/target/rocksdbjni-$(ROCKSDB_MAJOR).$(ROCKSDB_MINOR).$(ROCKSDB_PATCH)-linux64.jar -Dclassifier=linux64
 	mvn gpg:sign-and-deploy-file -Durl=https://oss.sonatype.org/service/local/staging/deploy/maven2/ -DrepositoryId=sonatype-nexus-staging -DpomFile=java/rocksjni.pom -Dfile=java/target/rocksdbjni-$(ROCKSDB_MAJOR).$(ROCKSDB_MINOR).$(ROCKSDB_PATCH)-linux32.jar -Dclassifier=linux32
 	mvn gpg:sign-and-deploy-file -Durl=https://oss.sonatype.org/service/local/staging/deploy/maven2/ -DrepositoryId=sonatype-nexus-staging -DpomFile=java/rocksjni.pom -Dfile=java/target/rocksdbjni-$(ROCKSDB_MAJOR).$(ROCKSDB_MINOR).$(ROCKSDB_PATCH)-osx.jar -Dclassifier=osx
-	mvn gpg:sign-and-deploy-file -Durl=https://oss.sonatype.org/service/local/staging/deploy/maven2/ -DrepositoryId=sonatype-nexus-staging -DpomFile=java/rocksjni.pom -Dfile=java/target/rocksdbjni-$(ROCKSDB_MAJOR).$(ROCKSDB_MINOR).$(ROCKSDB_PATCH)-win64.jar -Dclassifier=win64
 	mvn gpg:sign-and-deploy-file -Durl=https://oss.sonatype.org/service/local/staging/deploy/maven2/ -DrepositoryId=sonatype-nexus-staging -DpomFile=java/rocksjni.pom -Dfile=java/target/rocksdbjni-$(ROCKSDB_MAJOR).$(ROCKSDB_MINOR).$(ROCKSDB_PATCH).jar

 # A version of each $(LIBOBJECTS) compiled with -fPIC
@@ -1412,12 +1358,6 @@ rocksdbjava: $(java_libobjects)
 jclean:
 	cd java;$(MAKE) clean;

-jtest_compile: rocksdbjava
-	cd java;$(MAKE) java_test
-
-jtest_run:
-	cd java;$(MAKE) run_test
-
 jtest: rocksdbjava
 	cd java;$(MAKE) sample;$(MAKE) test;

@@ -1426,7 +1366,7 @@ jdb_bench:

 commit_prereq: build_tools/rocksdb-lego-determinator \
               build_tools/precommit_checker.py
-	J=$(J) build_tools/precommit_checker.py unit unit_481 clang_unit release release_481 clang_release tsan asan ubsan lite unit_non_shm
+	J=$(J) build_tools/precommit_checker.py unit unit_481 clang_unit tsan asan ubsan lite
 	$(MAKE) clean && $(MAKE) jclean && $(MAKE) rocksdbjava;

 xfunc:
@@ -1474,7 +1414,7 @@ endif
 #  	Source files dependencies detection
 # ---------------------------------------------------------------------------

-all_sources = $(LIB_SOURCES) $(MAIN_SOURCES) $(MOCK_LIB_SOURCES) $(TOOL_LIB_SOURCES) $(BENCH_LIB_SOURCES) $(TEST_LIB_SOURCES) $(EXP_LIB_SOURCES)
+all_sources = $(LIB_SOURCES) $(MAIN_SOURCES) $(MOCK_LIB_SOURCES) $(TOOL_LIB_SOURCES) $(BENCH_LIB_SOURCES) $(TEST_LIB_SOURCES)
 DEPFILES = $(all_sources:.cc=.d)

 # Add proper dependency support so changing a .h file forces a .cc file to
@@ -1,8 +1,6 @@
 ## RocksDB: A Persistent Key-Value Store for Flash and RAM Storage

 [![Build Status](https://travis-ci.org/facebook/rocksdb.svg?branch=master)](https://travis-ci.org/facebook/rocksdb)
-[![Build status](https://ci.appveyor.com/api/projects/status/fbgfu0so3afcno78/branch/master?svg=true)](https://ci.appveyor.com/project/Facebook/rocksdb/branch/master)
-

 RocksDB is developed and maintained by Facebook Database Engineering Team.
 It is built on earlier work on LevelDB by Sanjay Ghemawat (sanjay@google.com)
@@ -71,6 +71,3 @@ quasardb uses a heavily tuned RocksDB as its persistence layer.

 ## Apache Flink
 [Apache Flink](https://flink.apache.org/news/2016/03/08/release-1.0.0.html) uses RocksDB to store state locally on a machine.
-
-## Dgraph
-[Dgraph](https://github.com/dgraph-io/dgraph) is an open-source, scalable, distributed, low latency, high throughput Graph database .They use RocksDB to store state locally on a machine.
@@ -1,9 +1,8 @@
 version: 1.0.{build}
-image: Visual Studio 2015
 before_build:
 - md %APPVEYOR_BUILD_FOLDER%\build
 - cd %APPVEYOR_BUILD_FOLDER%\build
- cmake -G "Visual Studio 14 2015 Win64" -DOPTDBG=1 -DXPRESS=1 ..
+- cmake -G "Visual Studio 12 Win64" -DOPTDBG=1 -DXPRESS=1 ..
 - cd ..
 build:
  project: build\rocksdb.sln
@@ -46,7 +46,7 @@ if (class_exists('ArcanistWorkflow')) {
      'BaseDirectoryScopedFormatLinter' => 'cpp_linter/BaseDirectoryScopedFormatLinter.php',
      'FacebookArcanistConfiguration' => 'config/FacebookOldArcanistConfiguration.php',
      'FacebookFbcodeLintEngine' => 'lint_engine/FacebookFbcodeLintEngine.php',
-      'FacebookFbcodeUnitTestEngine' => 'unit_engine/FacebookOldFbcodeUnitTestEngine.php',
+      'FacebookFbcodeUnitTestEngine' => 'unit_engine/FacebookFbcodeUnitTestEngine.php',
      'FacebookHowtoevenLintEngine' => 'lint_engine/FacebookHowtoevenLintEngine.php',
      'FacebookHowtoevenLinter' => 'cpp_linter/FacebookHowtoevenLinter.php',
      'FbcodeClangFormatLinter' => 'cpp_linter/FbcodeClangFormatLinter.php',
@@ -25,7 +25,6 @@ function postURL($diffID, $url) {
  $cmd = 'echo \'{"diff_id": "' . $diffID . '", '
         . '"name":"click here for sandcastle tests for D' . $diffID . '", '
         . '"link":"' . $url . '"}\' | '
-         . 'no_proxy=facebook.com,tfbnw.net,fb.com '
         . 'http_proxy=fwdproxy.any.facebook.com:8080 '
         . 'https_proxy=fwdproxy.any.facebook.com:8080 arc call-conduit '
         . 'differential.updateunitresults';
@@ -41,7 +40,6 @@ function buildUpdateTestStatusCmd($diffID, $test, $status) {
  $cmd = 'echo \'{"diff_id": "' . $diffID . '", '
         . '"name":"' . $test . '", '
         . '"result":"' . $status . '"}\' | '
-         . 'no_proxy=facebook.com,tfbnw.net,fb.com '
         . 'http_proxy=fwdproxy.any.facebook.com:8080 '
         . 'https_proxy=fwdproxy.any.facebook.com:8080 arc call-conduit '
         . 'differential.updateunitresults';
@@ -64,9 +62,7 @@ function getSteps($applyDiff, $diffID, $username, $test) {
    assert(strlen($diffID) > 0);
    assert(is_numeric($diffID));

-    $arcrc_content = (PHP_OS == "Darwin" ?
-        exec("cat ~/.arcrc | gzip -f | base64") :
-            exec("cat ~/.arcrc | gzip -f | base64 -w0"));
+    $arcrc_content = exec("cat ~/.arcrc | gzip -f | base64 -w0");
    assert(strlen($arcrc_content) > 0);

    // Sandcastle machines don't have arc setup. We copy the user certificate
@@ -79,10 +75,9 @@ function getSteps($applyDiff, $diffID, $username, $test) {
    );

    // arc demands certain permission on its config.
-    // also fix the sticky bit issue in sandcastle
    $fix_permission = array(
      "name" => "Fix environment",
-      "shell" => "chmod 600 ~/.arcrc && chmod +t /dev/shm",
+      "shell" => "chmod 600 ~/.arcrc",
      "user" => "root"
    );

@@ -108,8 +103,7 @@ function getSteps($applyDiff, $diffID, $username, $test) {
    // Patch the code (keep your fingures crossed).
    $patch = array(
      "name" => "Patch " . $diffID,
-      "shell" => "no_proxy=facebook.com,tfbnw.net,fb.com "
-                  ."HTTPS_PROXY=fwdproxy:8080 arc --arcrc-file ~/.arcrc "
+      "shell" => "HTTPS_PROXY=fwdproxy:8080 arc --arcrc-file ~/.arcrc "
                  . "patch --nocommit --diff " . $diffID,
      "user" => "root"
    );
@@ -121,7 +115,7 @@ function getSteps($applyDiff, $diffID, $username, $test) {
  }

  // Run the actual command.
-  $cmd = $cmd . "J=$(nproc) ./build_tools/precommit_checker.py " . $test
+  $cmd = $cmd . "./build_tools/precommit_checker.py " . $test
           . "; exit_code=$?; ";

  if ($applyDiff) {
@@ -131,31 +125,15 @@ function getSteps($applyDiff, $diffID, $username, $test) {
                . "; ";
  }

-  // shell command to sort the tests based on exit code and print
-  // the output of the log files.
-  $cat_sorted_logs = "
-    while read code log_file;
-      do echo \"################ cat \$log_file [exit_code : \$code] ################\";
-      cat \$log_file;
-    done < <(tail -n +2 LOG | sort -k7,7n -k4,4gr | awk '{print \$7,\$NF}')";
-
-  // Shell command to cat all log files
-  $cat_all_logs = "for f in `ls t/!(run-*)`; do echo \$f;cat \$f; done";
-
-  // If LOG file exist use it to cat log files sorted by exit code, otherwise
-  // cat everything
-  $logs_cmd = "if [ -f LOG ]; then {$cat_sorted_logs}; else {$cat_all_logs}; fi";
-
  $cmd = $cmd . " cat /tmp/precommit-check.log"
-              . "; shopt -s extglob; {$logs_cmd}"
-              . "; shopt -u extglob; [[ \$exit_code -eq 0 ]]";
+           . "; for f in `ls t/log-*`; do echo \$f; cat \$f; done;"
+           . "[[ \$exit_code -eq 0 ]]";
  assert(strlen($cmd) > 0);

  $run_test = array(
    "name" => "Run " . $test,
    "shell" => $cmd,
    "user" => "root",
-    "parser" => "python build_tools/error_filter.py " . $test,
  );

  $steps[] = $run_test;
@@ -186,14 +164,6 @@ function getSandcastleConfig() {
  } else {
    // This is a typical `[p]arc diff` case. Fetch the values from the specific
    // configuration files.
-    for ($i = 0; $i < 50; $i++) {
-      if (file_exists(PRIMARY_TOKEN_FILE) ||
-          file_exists(SECONDARY_TOKEN_FILE)) {
-        break;
-      }
-      // If we failed to fetch the tokens, sleep for 0.2 second and try again
-      usleep(200000);
-    }
    assert(file_exists(PRIMARY_TOKEN_FILE) ||
           file_exists(SECONDARY_TOKEN_FILE));

@@ -242,11 +212,21 @@ function getSandcastleConfig() {
    assert(is_numeric($diffID));
  }

-  // List of tests we want to run in Sandcastle.
-  $tests = array("unit", "unit_non_shm", "unit_481", "clang_unit", "tsan",
-                 "asan", "lite_test", "valgrind", "release", "release_481",
-                 "clang_release", "punit", "clang_analyze", "code_cov",
-                 "java_build", "no_compression", "unity", "ubsan");
+  if (strcmp(getenv("ROCKSDB_CHECK_ALL"), 1) == 0) {
+    // Extract all tests from the CI definition.
+    $output = file_get_contents("build_tools/rocksdb-lego-determinator");
+    assert(strlen($output) > 0);
+
+    preg_match_all('/[ ]{2}([a-zA-Z0-9_]+)[\)]{1}/', $output, $matches);
+    $tests = $matches[1];
+    assert(count($tests) > 0);
+  } else {
+    // Manually list of tests we want to run in Sandcastle.
+    $tests = array(
+      "unit", "unit_481", "clang_unit", "tsan", "asan", "lite_test",
+      "valgrind", "release"
+    );
+  }

  $send_email_template = array(
    'type' => 'email',
@@ -275,9 +255,7 @@ function getSandcastleConfig() {
  // execute. Why compress the job definitions? Otherwise we run over the max
  // string size.
  $cmd = "echo " . base64_encode(json_encode($arg))
-         . (PHP_OS == "Darwin" ?
-             " | gzip -f | base64" :
-                 " | gzip -f | base64 -w0");
+         . " | gzip -f | base64 -w0";
  assert(strlen($cmd) > 0);

  $arg_encoded = shell_exec($cmd);
@@ -4,7 +4,7 @@
 // LICENSE file in the root directory of this source tree. An additional grant
 // of patent rights can be found in the PATENTS file in the same directory.

-class FacebookFbcodeUnitTestEngine extends ArcanistUnitTestEngine {
+class FacebookFbcodeUnitTestEngine extends ArcanistBaseUnitTestEngine {

  public function run() {
      // For a call to `arc call-conduit differential.updateunitresults` to
@@ -1,17 +0,0 @@
-<?php
-// Copyright 2004-present Facebook. All Rights Reserved.
-// This source code is licensed under the BSD-style license found in the
-// LICENSE file in the root directory of this source tree. An additional grant
-// of patent rights can be found in the PATENTS file in the same directory.
-
-class FacebookFbcodeUnitTestEngine extends ArcanistBaseUnitTestEngine {
-
-  public function run() {
-      // For a call to `arc call-conduit differential.updateunitresults` to
-      // succeed we need at least one entry here.
-      $result = new ArcanistUnitTestResult();
-      $result->setName("dummy_placeholder_entry");
-      $result->setResult(ArcanistUnitTestResult::RESULT_PASS);
-      return array($result);
-  }
-}
@@ -19,21 +19,22 @@
 #
 # The PLATFORM_CCFLAGS and PLATFORM_CXXFLAGS might include the following:
 #
-#       -DROCKSDB_PLATFORM_POSIX    if posix-platform based
+#       -DLEVELDB_PLATFORM_POSIX if cstdatomic is present
+#       -DLEVELDB_PLATFORM_NOATOMIC if it is not
 #       -DSNAPPY                    if the Snappy library is present
 #       -DLZ4                       if the LZ4 library is present
 #       -DZSTD                      if the ZSTD library is present
 #       -DNUMA                      if the NUMA library is present
-#       -DTBB                       if the TBB library is present
 #
 # Using gflags in rocksdb:
 # Our project depends on gflags, which requires users to take some extra steps
 # before they can compile the whole repository:
 #   1. Install gflags. You may download it from here:
-#      https://gflags.github.io/gflags/ (Mac users can `brew install gflags`)
-#   2. Once installed, add the include path for gflags to your CPATH env var and
-#      the lib path to LIBRARY_PATH. If installed with default settings, the lib
-#      will be /usr/local/lib and the include path will be /usr/local/include
+#      https://code.google.com/p/gflags/
+#   2. Once install, add the include path/lib path for gflags to CPATH and
+#      LIBRARY_PATH respectively. If installed with default mode, the
+#      lib and include path will be /usr/local/lib and /usr/local/include
+# Mac user can do this by having brew installed and running brew install gflags

 OUTPUT=$1
 if test -z "$OUTPUT"; then
@@ -164,7 +165,7 @@ case "$TARGET_OS" in
        ;;
    OS_ANDROID_CROSSCOMPILE)
        PLATFORM=OS_ANDROID
-	COMMON_FLAGS="$COMMON_FLAGS -fno-builtin-memcmp -D_REENTRANT -DOS_ANDROID -DROCKSDB_PLATFORM_POSIX"
+	COMMON_FLAGS="$COMMON_FLAGS -fno-builtin-memcmp -D_REENTRANT -DOS_ANDROID -DLEVELDB_PLATFORM_POSIX"
 	PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS "  # All pthread features are in the Android C library
        # PORT_FILES=port/android/android.cc
        CROSS_COMPILE=true
@@ -282,7 +283,7 @@ EOF
    # Test whether numa is available
    $CXX $CFLAGS -x c++ - -o /dev/null -lnuma 2>/dev/null  <<EOF
      #include <numa.h>
-      #include <numaif.h>
+      #inlcude <numaif.h>
      int main() {}
 EOF
    if [ "$?" = 0 ]; then
@@ -291,17 +292,6 @@ EOF
        JAVA_LDFLAGS="$JAVA_LDFLAGS -lnuma"
    fi

-    # Test whether tbb is available
-    $CXX $CFLAGS $LDFLAGS -x c++ - -o /dev/null -ltbb 2>/dev/null  <<EOF
-      #include <tbb/tbb.h>
-      int main() {}
-EOF
-    if [ "$?" = 0 ]; then
-        COMMON_FLAGS="$COMMON_FLAGS -DTBB"
-        PLATFORM_LDFLAGS="$PLATFORM_LDFLAGS -ltbb"
-        JAVA_LDFLAGS="$JAVA_LDFLAGS -ltbb"
-    fi
-
    # Test whether jemalloc is available
    if echo 'int main() {}' | $CXX $CFLAGS -x c++ - -o /dev/null -ljemalloc \
      2>/dev/null; then
@@ -1,17 +1,16 @@
-GCC_BASE=/mnt/gvfs/third-party2/gcc/cf7d14c625ce30bae1a4661c2319c5a283e4dd22/4.8.1/centos6-native/cc6c9dc
-CLANG_BASE=/mnt/gvfs/third-party2/llvm-fb/8598c375b0e94e1448182eb3df034704144a838d/stable/centos6-native/3f16ddd
-LIBGCC_BASE=/mnt/gvfs/third-party2/libgcc/d6e0a7da6faba45f5e5b1638f9edd7afc2f34e7d/4.8.1/gcc-4.8.1-glibc-2.17/8aac7fc
-GLIBC_BASE=/mnt/gvfs/third-party2/glibc/d282e6e8f3d20f4e40a516834847bdc038e07973/2.17/gcc-4.8.1-glibc-2.17/99df8fc
+GCC_BASE=/mnt/gvfs/third-party2/gcc/ebc96bc2fb751b5a0300b8d91a95bdf24ac1d88b/4.8.1/centos6-native/cc6c9dc
+CLANG_BASE=/mnt/gvfs/third-party2/llvm-fb/b91de48a4974ec839946d824402b098d43454cef/stable/centos6-native/7aaccbe
+LIBGCC_BASE=/mnt/gvfs/third-party2/libgcc/53e0eac8911888a105aa98b9a35fe61cf1d8b278/4.8.1/gcc-4.8.1-glibc-2.17/8aac7fc
+GLIBC_BASE=/mnt/gvfs/third-party2/glibc/ee36ac9a72dfac4a995f1b215bb4c0fc8a0f6f91/2.17/gcc-4.8.1-glibc-2.17/99df8fc
 SNAPPY_BASE=/mnt/gvfs/third-party2/snappy/8c38a4c1e52b4c2cc8a9cdc31b9c947ed7dbfcb4/1.1.3/gcc-4.8.1-glibc-2.17/c3f970a
-ZLIB_BASE=/mnt/gvfs/third-party2/zlib/0882df3713c7a84f15abe368dc004581f20b39d7/1.2.8/gcc-4.8.1-glibc-2.17/c3f970a
-BZIP2_BASE=/mnt/gvfs/third-party2/bzip2/740325875f6729f42d28deaa2147b0854f3a347e/1.0.6/gcc-4.8.1-glibc-2.17/c3f970a
+ZLIB_BASE=/mnt/gvfs/third-party2/zlib/2b24f1e99454f9ca7b0301720f94836dae1bf71b/1.2.8/gcc-4.8.1-glibc-2.17/c3f970a
+BZIP2_BASE=/mnt/gvfs/third-party2/bzip2/af7c14c9b652cdd5ec34eadd25c3f38a9b306c5d/1.0.6/gcc-4.8.1-glibc-2.17/c3f970a
 LZ4_BASE=/mnt/gvfs/third-party2/lz4/0e790b441e2d9acd68d51e1d2e028f88c6a79ddf/r131/gcc-4.8.1-glibc-2.17/c3f970a
-ZSTD_BASE=/mnt/gvfs/third-party2/zstd/9455f75ff7f4831dc9fda02a6a0f8c68922fad8f/1.0.0/gcc-4.8.1-glibc-2.17/c3f970a
-GFLAGS_BASE=/mnt/gvfs/third-party2/gflags/f001a51b2854957676d07306ef3abf67186b5c8b/2.1.1/gcc-4.8.1-glibc-2.17/c3f970a
-JEMALLOC_BASE=/mnt/gvfs/third-party2/jemalloc/fc8a13ca1fffa4d0765c716c5a0b49f0c107518f/master/gcc-4.8.1-glibc-2.17/8d31e51
-NUMA_BASE=/mnt/gvfs/third-party2/numa/17c514c4d102a25ca15f4558be564eeed76f4b6a/2.0.8/gcc-4.8.1-glibc-2.17/c3f970a
+ZSTD_BASE=/mnt/gvfs/third-party2/zstd/1408484d03b15492aa54b10356104e9dc22e1cc5/0.6.1/gcc-4.8.1-glibc-2.17/c3f970a
+GFLAGS_BASE=/mnt/gvfs/third-party2/gflags/5a5c7a6608cb32f1e1e7f814023d5bdfbd136370/2.1.1/gcc-4.8.1-glibc-2.17/c3f970a
+JEMALLOC_BASE=/mnt/gvfs/third-party2/jemalloc/a4c2adecffcaa68d5585d06be2252e3efa52555b/master/gcc-4.8.1-glibc-2.17/8d31e51
+NUMA_BASE=/mnt/gvfs/third-party2/numa/1abc0d3c01743b854676423cf2d3629912f34930/2.0.8/gcc-4.8.1-glibc-2.17/c3f970a
 LIBUNWIND_BASE=/mnt/gvfs/third-party2/libunwind/ad576de2a1ea560c4d3434304f0fc4e079bede42/trunk/gcc-4.8.1-glibc-2.17/675d945
-TBB_BASE=/mnt/gvfs/third-party2/tbb/9d9a554877d0c5bef330fe818ab7178806dd316a/4.0_update2/gcc-4.8.1-glibc-2.17/c3f970a
-KERNEL_HEADERS_BASE=/mnt/gvfs/third-party2/kernel-headers/7c111ff27e0c466235163f00f280a9d617c3d2ec/4.0.9-36_fbk5_2933_gd092e3f/gcc-4.8.1-glibc-2.17/da39a3e
-BINUTILS_BASE=/mnt/gvfs/third-party2/binutils/b7fd454c4b10c6a81015d4524ed06cdeab558490/2.26/centos6-native/da39a3e
-VALGRIND_BASE=/mnt/gvfs/third-party2/valgrind/d7f4d4d86674a57668e3a96f76f0e17dd0eb8765/3.8.1/gcc-4.8.1-glibc-2.17/c3f970a
+KERNEL_HEADERS_BASE=/mnt/gvfs/third-party2/kernel-headers/f24be37d170e04be6e469af487644d4d62e1c6c1/4.0.9-36_fbk5_2933_gd092e3f/gcc-4.8.1-glibc-2.17/da39a3e
+BINUTILS_BASE=/mnt/gvfs/third-party2/binutils/9d65c666b9adf8f2a989fd4b98a9a5e7d3afa233/2.26/centos6-native/da39a3e
+VALGRIND_BASE=/mnt/gvfs/third-party2/valgrind/9cee5a3628dc9d4b93897972c58eba865e25b270/3.8.1/gcc-4.8.1-glibc-2.17/c3f970a
@@ -119,9 +119,7 @@ _TEST_NAME_TO_PARSERS = {
    'unit': [CompilerErrorParser, GTestErrorParser],
    'release': [CompilerErrorParser, GTestErrorParser],
    'unit_481': [CompilerErrorParser, GTestErrorParser],
-    'release_481': [CompilerErrorParser, GTestErrorParser],
    'clang_unit': [CompilerErrorParser, GTestErrorParser],
-    'clang_release': [CompilerErrorParser, GTestErrorParser],
    'clang_analyze': [CompilerErrorParser, ScanBuildErrorParser],
    'code_cov': [CompilerErrorParser, GTestErrorParser],
    'unity': [CompilerErrorParser, GTestErrorParser],
@@ -48,17 +48,13 @@ NUMA_LIB=" $NUMA_BASE/lib/libnuma.a"
 # location of libunwind
 LIBUNWIND="$LIBUNWIND_BASE/lib/libunwind.a"

-# location of tbb
-TBB_INCLUDE=" -isystem $TBB_BASE/include/"
-TBB_LIBS="$TBB_BASE/lib/libtbb.a"
-
 # use Intel SSE support for checksum calculations
 export USE_SSE=1

 BINUTILS="$BINUTILS_BASE/bin"
 AR="$BINUTILS/ar"

-DEPS_INCLUDE="$SNAPPY_INCLUDE $ZLIB_INCLUDE $BZIP2_INCLUDE $LZ4_INCLUDE $ZSTD_INCLUDE $GFLAGS_INCLUDE $NUMA_INCLUDE $TBB_INCLUDE"
+DEPS_INCLUDE="$SNAPPY_INCLUDE $ZLIB_INCLUDE $BZIP2_INCLUDE $LZ4_INCLUDE $ZSTD_INCLUDE $GFLAGS_INCLUDE $NUMA_INCLUDE"

 STDLIBS="-L $GCC_BASE/lib64"

@@ -94,15 +90,13 @@ fi

 CFLAGS+=" $DEPS_INCLUDE"
 CFLAGS+=" -DROCKSDB_PLATFORM_POSIX -DROCKSDB_LIB_IO_POSIX -DROCKSDB_FALLOCATE_PRESENT -DROCKSDB_MALLOC_USABLE_SIZE"
-CFLAGS+=" -DSNAPPY -DGFLAGS=google -DZLIB -DBZIP2 -DLZ4 -DZSTD -DNUMA -DTBB"
+CFLAGS+=" -DSNAPPY -DGFLAGS=google -DZLIB -DBZIP2 -DLZ4 -DZSTD -DNUMA"
 CXXFLAGS+=" $CFLAGS"

-EXEC_LDFLAGS=" $SNAPPY_LIBS $ZLIB_LIBS $BZIP2_LIBS $LZ4_LIBS $ZSTD_LIBS $GFLAGS_LIBS $NUMA_LIB $TBB_LIBS"
+EXEC_LDFLAGS=" $SNAPPY_LIBS $ZLIB_LIBS $BZIP2_LIBS $LZ4_LIBS $ZSTD_LIBS $GFLAGS_LIBS $NUMA_LIB"
 EXEC_LDFLAGS+=" -Wl,--dynamic-linker,/usr/local/fbcode/gcc-4.8.1-glibc-2.17/lib/ld.so"
 EXEC_LDFLAGS+=" $LIBUNWIND"
 EXEC_LDFLAGS+=" -Wl,-rpath=/usr/local/fbcode/gcc-4.8.1-glibc-2.17/lib"
-# required by libtbb
-EXEC_LDFLAGS+=" -ldl"

 PLATFORM_LDFLAGS="$LIBGCC_LIBS $GLIBC_LIBS $STDLIBS -lgcc -lstdc++"

@@ -94,7 +94,7 @@ class PreCommitChecker(Env):
    #
    def get_commands(self, test):
        status, out = self.GetOutput(
-            "RATIO=1 build_tools/rocksdb-lego-determinator %s" % test, ".")
+            "build_tools/rocksdb-lego-determinator %s" % test, ".")
        return status, out

    #
@@ -8,7 +8,7 @@
 # Input         Value
 # -------------------------------------------------------------------------
 # EMAIL         Email address to report on trigger conditions
-# ONCALL        Email address to raise a task on failure
+# ONCAL         Email address to raise a task on failure
 # TRIGGER       Trigger conditions for email. Valid values are fail, warn, all
 # SUBSCRIBER    Email addresss to add as subscriber for task
 #
@@ -42,9 +42,6 @@ if [ ! -z $ONCALL ]; then
  },"
 fi

-# For now, create the tasks using only the dedicated task creation tool.
-CREATE_TASK=
-
 REPORT=
 if [[ ! -z $REPORT_EMAIL || ! -z $CREATE_TASK ]]; then
  REPORT="'report': [
@@ -59,26 +56,10 @@ fi
 CLEANUP_ENV="
 {
    'name':'Cleanup environment',
-    'shell':'rm -rf /dev/shm/rocksdb && mkdir /dev/shm/rocksdb && (chmod +t /dev/shm || true)  && make clean',
+    'shell':'rm -rf /dev/shm/rocksdb && mkdir /dev/shm/rocksdb && make clean',
    'user':'root'
 }"

-# We will eventually set the RATIO to 1, but we want do this
-# in steps. RATIO=$(nproc) will make it work as J=1
-if [ -z $RATIO ]; then
-  RATIO=$(nproc)
-fi
-
-if [ -z $PARALLEL_J ]; then
-  PARALLEL_J="J=$(expr $(nproc) / ${RATIO})"
-fi
-
-if [ -z $PARALLEL_j ]; then
-  PARALLEL_j="-j$(expr $(nproc) / ${RATIO})"
-fi
-
-PARALLELISM="$PARALLEL_J $PARALLEL_j"
-
 DEBUG="OPT=-g"
 SHM="TEST_TMPDIR=/dev/shm/rocksdb"
 GCC_481="ROCKSDB_FBCODE_BUILD_WITH_481=1"
@@ -92,19 +73,6 @@ HTTP_PROXY="https_proxy=http://fwdproxy.29.prn1:8080 http_proxy=http://fwdproxy.
 SETUP_JAVA_ENV="export $HTTP_PROXY; export JAVA_HOME=/usr/local/jdk-7u10-64/; export PATH=\$PATH:\$JAVA_HOME/bin"
 PARSER="'parser':'python build_tools/error_filter.py $1'"

-CONTRUN_NAME="ROCKSDB_CONTRUN_NAME"
-
-# This code is getting called under various scenarios. What we care about is to
-# understand when it's called from nightly contruns because in that case we'll
-# create tasks for any failures. To follow the existing pattern, we'll check
-# the value of $ONCALL. If it's a diff then just call `false` to make sure
-# that errors will be properly propagated to the caller.
-if [ ! -z $ONCALL ]; then
-  TASK_CREATION_TOOL="/usr/local/bin/mysql_mtr_filter --rocksdb"
-else
-  TASK_CREATION_TOOL="false"
-fi
-
 ARTIFACTS=" 'artifacts': [
    {
        'name':'database',
@@ -142,14 +110,14 @@ PARALLEL_UNIT_TEST_COMMANDS="[
            $CLEANUP_ENV,
            {
                'name':'Build and test RocksDB debug version',
-                'shell':'$DEBUG make -j$(nproc) all && $SHM make check > /dev/null 2>&1 || $CONTRUN_NAME=punit_check $TASK_CREATION_TOOL || cat t/log-*',
+                'shell':'$DEBUG make -j$(nproc) all && $SHM make check > /dev/null 2>&1 || cat t/log-*',
                'user':'root',
                $PARSER
            },
            $CLEANUP_ENV,
            {
                'name':'Build and test RocksDB debug version under gcc-4.8.1',
-                'shell':'$GCC_481 $DEBUG make -j$(nproc) all && $SHM make check > /dev/null 2>&1 || $CONTRUN_NAME=punit_check_gcc481 $TASK_CREATION_TOOL || cat t/log-*',
+                'shell':'$GCC_481 $DEBUG make -j$(nproc) all && $SHM make check > /dev/null 2>&1 || cat t/log-*',
                'user':'root',
                $PARSER
            },
@@ -169,29 +137,7 @@ UNIT_TEST_COMMANDS="[
            $CLEANUP_ENV,
            {
                'name':'Build and test RocksDB debug version',
-                'shell':'$SHM $DEBUG make $PARALLELISM check || $CONTRUN_NAME=check $TASK_CREATION_TOOL',
-                'user':'root',
-                $PARSER
-            },
-        ],
-        $REPORT
-    }
-]"
-
-#
-# RocksDB unit test not under /dev/shm
-#
-UNIT_TEST_NON_SHM_COMMANDS="[
-    {
-        'name':'Rocksdb Unit Test',
-        'oncall':'$ONCALL',
-        'timeout': 86400,
-        'steps': [
-            $CLEANUP_ENV,
-            {
-                'name':'Build and test RocksDB debug version',
-                'timeout': 86400,
-                'shell':'$DEBUG make $PARALLELISM check || $CONTRUN_NAME=non_shm_check $TASK_CREATION_TOOL',
+                'shell':'$SHM $DEBUG make J=1 check',
                'user':'root',
                $PARSER
            },
@@ -203,15 +149,15 @@ UNIT_TEST_NON_SHM_COMMANDS="[
 #
 # RocksDB release build and unit tests
 #
-RELEASE_BUILD_COMMANDS="[
+RELEASE_UNIT_TEST_COMMANDS="[
    {
-        'name':'Rocksdb Release Build',
+        'name':'Rocksdb Release Unit Test',
        'oncall':'$ONCALL',
        'steps': [
            $CLEANUP_ENV,
            {
-                'name':'Build RocksDB release',
-                'shell':'make $PARALLEL_j release || $CONTRUN_NAME=release $TASK_CREATION_TOOL',
+                'name':'Build and test RocksDB debug version',
+                'shell':'$SHM $DEBUG make J=1 release',
                'user':'root',
                $PARSER
            },
@@ -231,27 +177,7 @@ UNIT_TEST_COMMANDS_481="[
            $CLEANUP_ENV,
            {
                'name':'Build and test RocksDB debug version',
-                'shell':'$SHM $GCC_481 $DEBUG make $PARALLELISM check || $CONTRUN_NAME=unit_gcc_481_check $TASK_CREATION_TOOL',
-                'user':'root',
-                $PARSER
-            },
-        ],
-        $REPORT
-    }
-]"
-
-#
-# RocksDB release build and unit tests
-#
-RELEASE_BUILD_COMMANDS_481="[
-    {
-        'name':'Rocksdb Release on GCC 4.8.1',
-        'oncall':'$ONCALL',
-        'steps': [
-            $CLEANUP_ENV,
-            {
-                'name':'Build RocksDB release on GCC 4.8.1',
-                'shell':'$GCC_481 make $PARALLEL_j release || $CONTRUN_NAME=release_gcc481 $TASK_CREATION_TOOL',
+                'shell':'$SHM $GCC_481 $DEBUG make J=1 check',
                'user':'root',
                $PARSER
            },
@@ -271,27 +197,7 @@ CLANG_UNIT_TEST_COMMANDS="[
            $CLEANUP_ENV,
            {
                'name':'Build and test RocksDB debug',
-                'shell':'$CLANG $SHM $DEBUG make $PARALLELISM check || $CONTRUN_NAME=clang_check $TASK_CREATION_TOOL',
-                'user':'root',
-                $PARSER
-            },
-        ],
-        $REPORT
-    }
-]"
-
-#
-# RocksDB release build with CLANG
-#
-CLANG_RELEASE_BUILD_COMMANDS="[
-    {
-        'name':'Rocksdb CLANG Release Build',
-        'oncall':'$ONCALL',
-        'steps': [
-            $CLEANUP_ENV,
-            {
-                'name':'Build RocksDB release',
-                'shell':'$CLANG make $PARALLEL_j release|| $CONTRUN_NAME=clang_release $TASK_CREATION_TOOL',
+                'shell':'$CLANG $SHM $DEBUG make J=1 check',
                'user':'root',
                $PARSER
            },
@@ -311,7 +217,7 @@ CLANG_ANALYZE_COMMANDS="[
            $CLEANUP_ENV,
            {
                'name':'RocksDB build and analyze',
-                'shell':'$CLANG $SHM $DEBUG make $PARALLEL_j analyze || $CONTRUN_NAME=clang_analyze $TASK_CREATION_TOOL',
+                'shell':'$CLANG $SHM $DEBUG make J=1 analyze',
                'user':'root',
                $PARSER
            },
@@ -331,7 +237,7 @@ CODE_COV_COMMANDS="[
            $CLEANUP_ENV,
            {
                'name':'Build, test and collect code coverage info',
-                'shell':'$SHM $DEBUG make $PARALLELISM coverage || $CONTRUN_NAME=coverage $TASK_CREATION_TOOL',
+                'shell':'$SHM $DEBUG make J=1 coverage',
                'user':'root',
                $PARSER
            },
@@ -351,7 +257,7 @@ UNITY_COMMANDS="[
            $CLEANUP_ENV,
            {
                'name':'Build, test unity test',
-                'shell':'$SHM $DEBUG V=1 make J=1 unity_test || $CONTRUN_NAME=unity_test $TASK_CREATION_TOOL',
+                'shell':'$SHM $DEBUG V=1 make J=1 unity_test',
                'user':'root',
                $PARSER
            },
@@ -371,7 +277,7 @@ LITE_BUILD_COMMANDS="[
            $CLEANUP_ENV,
            {
                'name':'Build RocksDB debug version',
-                'shell':'$LITE make J=1 static_lib || $CONTRUN_NAME=lite_static_lib $TASK_CREATION_TOOL',
+                'shell':'$LITE make J=1 static_lib',
                'user':'root',
                $PARSER
            },
@@ -391,7 +297,7 @@ LITE_UNIT_TEST_COMMANDS="[
            $CLEANUP_ENV,
            {
                'name':'Build RocksDB debug version',
-                'shell':'$SHM $LITE make J=1 check || $CONTRUN_NAME=lite_check $TASK_CREATION_TOOL',
+                'shell':'$SHM $LITE make J=1 check',
                'user':'root',
                $PARSER
            },
@@ -412,14 +318,14 @@ STRESS_CRASH_TEST_COMMANDS="[
            $CLEANUP_ENV,
            {
                'name':'Build and run RocksDB debug stress tests',
-                'shell':'$SHM $DEBUG make J=1 db_stress || $CONTRUN_NAME=db_stress $TASK_CREATION_TOOL',
+                'shell':'$SHM $DEBUG make J=1 db_stress',
                'user':'root',
                $PARSER
            },
            {
                'name':'Build and run RocksDB debug crash tests',
                'timeout': 86400,
-                'shell':'$SHM $DEBUG make J=1 crash_test || $CONTRUN_NAME=crash_test $TASK_CREATION_TOOL',
+                'shell':'$SHM $DEBUG make J=1 crash_test',
                'user':'root',
                $PARSER
            }
@@ -440,7 +346,7 @@ WRITE_STRESS_COMMANDS="[
            $CLEANUP_ENV,
            {
                'name':'Build and run RocksDB write stress tests',
-                'shell':'make write_stress && python tools/write_stress_runner.py --runtime_sec=3600 --db=/tmp/rocksdb_write_stress || $CONTRUN_NAME=write_stress $TASK_CREATION_TOOL',
+                'shell':'make write_stress && python tools/write_stress_runner.py --runtime_sec=3600 --db=/tmp/rocksdb_write_stress',
                'user':'root',
                $PARSER
            }
@@ -462,7 +368,7 @@ ASAN_TEST_COMMANDS="[
            $CLEANUP_ENV,
            {
                'name':'Test RocksDB debug under ASAN',
-'shell':'set -o pipefail && ($SHM $ASAN $DEBUG make $PARALLELISM asan_check || $CONTRUN_NAME=asan_check $TASK_CREATION_TOOL) |& /usr/facebook/ops/scripts/asan_symbolize.py -d',
+                'shell':'set -o pipefail && $SHM $ASAN $DEBUG make J=1 asan_check |& /usr/facebook/ops/scripts/asan_symbolize.py -d',
                'user':'root',
                $PARSER
            }
@@ -484,7 +390,7 @@ ASAN_CRASH_TEST_COMMANDS="[
            {
                'name':'Build and run RocksDB debug asan_crash_test',
                'timeout': 86400,
-                'shell':'$SHM $DEBUG make J=1 asan_crash_test || $CONTRUN_NAME=asan_crash_test $TASK_CREATION_TOOL',
+                'shell':'$SHM $DEBUG make J=1 asan_crash_test',
                'user':'root',
                $PARSER
            },
@@ -504,7 +410,7 @@ UBSAN_TEST_COMMANDS="[
            $CLEANUP_ENV,
            {
                'name':'Test RocksDB debug under UBSAN',
-                'shell':'set -o pipefail && $SHM $UBSAN $DEBUG make $PARALLELISM ubsan_check || $CONTRUN_NAME=ubsan_check $TASK_CREATION_TOOL',
+                'shell':'set -o pipefail && $SHM $UBSAN $DEBUG make J=1 ubsan_check',
                'user':'root',
                $PARSER
            }
@@ -526,7 +432,7 @@ UBSAN_CRASH_TEST_COMMANDS="[
            {
                'name':'Build and run RocksDB debug ubsan_crash_test',
                'timeout': 86400,
-                'shell':'$SHM $DEBUG make J=1 ubsan_crash_test || $CONTRUN_NAME=ubsan_crash_test $TASK_CREATION_TOOL',
+                'shell':'$SHM $DEBUG make J=1 ubsan_crash_test',
                'user':'root',
                $PARSER
            },
@@ -542,13 +448,11 @@ VALGRIND_TEST_COMMANDS="[
    {
        'name':'Rocksdb Unit Test under valgrind',
        'oncall':'$ONCALL',
-        'timeout': 86400,
        'steps': [
            $CLEANUP_ENV,
            {
                'name':'Run RocksDB debug unit tests',
-                'timeout': 86400,
-                'shell':'$DISABLE_JEMALLOC $SHM $DEBUG make $PARALLELISM valgrind_check || $CONTRUN_NAME=valgrind_check $TASK_CREATION_TOOL',
+                'shell':'$DISABLE_JEMALLOC $SHM $DEBUG make valgrind_check',
                'user':'root',
                $PARSER
            },
@@ -564,13 +468,11 @@ TSAN_UNIT_TEST_COMMANDS="[
    {
        'name':'Rocksdb Unit Test under TSAN',
        'oncall':'$ONCALL',
-        'timeout': 86400,
        'steps': [
            $CLEANUP_ENV,
            {
                'name':'Run RocksDB debug unit test',
-                'timeout': 86400,
-                'shell':'set -o pipefail && $SHM $DEBUG $TSAN make $PARALLELISM check || $CONTRUN_NAME=tsan_check $TASK_CREATION_TOOL',
+                'shell':'set -o pipefail && $SHM $DEBUG $TSAN make J=1 check',
                'user':'root',
                $PARSER
            },
@@ -592,7 +494,7 @@ TSAN_CRASH_TEST_COMMANDS="[
            {
                'name':'Compile and run',
                'timeout': 86400,
-                'shell':'set -o pipefail && $SHM $DEBUG $TSAN CRASH_TEST_KILL_ODD=1887 make J=1 crash_test || $CONTRUN_NAME=tsan_crash_test $TASK_CREATION_TOOL',
+                'shell':'set -o pipefail && $SHM $DEBUG $TSAN make J=1 crash_test',
                'user':'root',
                $PARSER
            },
@@ -601,6 +503,8 @@ TSAN_CRASH_TEST_COMMANDS="[
    }
 ]"

+TSAN_CRASH_TEST_COMMANDS=$DISABLE_COMMANDS
+
 #
 # RocksDB format compatible
 #
@@ -654,7 +558,7 @@ FORMAT_COMPATIBLE_COMMANDS="[
            $CLEANUP_ENV,
            {
                'name':'Run RocksDB debug unit test',
-                'shell':'build_tools/rocksdb-lego-determinator run_format_compatible || $CONTRUN_NAME=run_format_compatible $TASK_CREATION_TOOL',
+                'shell':'build_tools/rocksdb-lego-determinator run_format_compatible',
                'user':'root',
                $PARSER
            },
@@ -687,7 +591,7 @@ NO_COMPRESSION_COMMANDS="[
            $CLEANUP_ENV,
            {
                'name':'Run RocksDB debug unit test',
-                'shell':'build_tools/rocksdb-lego-determinator run_no_compression || $CONTRUN_NAME=run_no_compression $TASK_CREATION_TOOL',
+                'shell':'build_tools/rocksdb-lego-determinator run_no_compression',
                'user':'root',
                $PARSER
            },
@@ -744,7 +648,7 @@ REGRESSION_COMMANDS="[
            $CLEANUP_ENV,
            {
                'name':'Make and run script',
-                'shell':'build_tools/rocksdb-lego-determinator run_regression || $CONTRUN_NAME=run_regression $TASK_CREATION_TOOL',
+                'shell':'build_tools/rocksdb-lego-determinator run_regression',
                'user':'root',
                $PARSER
            },
@@ -764,7 +668,7 @@ JAVA_BUILD_TEST_COMMANDS="[
            $CLEANUP_ENV,
            {
                'name':'Build RocksDB for Java',
-                'shell':'$SETUP_JAVA_ENV; $SHM make rocksdbjava || $CONTRUN_NAME=rocksdbjava $TASK_CREATION_TOOL',
+                'shell':'$SETUP_JAVA_ENV; $SHM make rocksdbjava',
                'user':'root',
                $PARSER
            },
@@ -781,24 +685,15 @@ case $1 in
  unit)
    echo $UNIT_TEST_COMMANDS
    ;;
-  unit_non_shm)
-    echo $UNIT_TEST_NON_SHM_COMMANDS
-    ;;
  release)
-    echo $RELEASE_BUILD_COMMANDS
+    echo $RELEASE_UNIT_TEST_COMMANDS
    ;;
  unit_481)
    echo $UNIT_TEST_COMMANDS_481
    ;;
-  release_481)
-    echo $RELEASE_BUILD_COMMANDS_481
-    ;;
  clang_unit)
    echo $CLANG_UNIT_TEST_COMMANDS
    ;;
-  clang_release)
-    echo $CLANG_RELEASE_BUILD_COMMANDS
-    ;;
  clang_analyze)
    echo $CLANG_ANALYZE_COMMANDS
    ;;
@@ -82,7 +82,6 @@ get_lib_base gflags     LATEST
 get_lib_base jemalloc   LATEST
 get_lib_base numa       LATEST
 get_lib_base libunwind  LATEST
-get_lib_base tbb        4.0_update2 gcc-4.9-glibc-2.20

 get_lib_base kernel-headers LATEST 
 get_lib_base binutils   LATEST centos6-native 
@@ -120,7 +119,6 @@ get_lib_base gflags     LATEST gcc-4.8.1-glibc-2.17
 get_lib_base jemalloc   LATEST gcc-4.8.1-glibc-2.17
 get_lib_base numa       LATEST gcc-4.8.1-glibc-2.17
 get_lib_base libunwind  LATEST gcc-4.8.1-glibc-2.17
-get_lib_base tbb        4.0_update2 gcc-4.8.1-glibc-2.17

 get_lib_base kernel-headers LATEST gcc-4.8.1-glibc-2.17 
 get_lib_base binutils   LATEST centos6-native 
@@ -1,22 +0,0 @@
-# - Find JeMalloc library
-# Find the native JeMalloc includes and library
-# This module defines
-#  JEMALLOC_INCLUDE_DIRS, where to find jemalloc.h, Set when
-#                        JEMALLOC_INCLUDE_DIR is found.
-#  JEMALLOC_LIBRARIES, libraries to link against to use JeMalloc.
-#  JEMALLOC_FOUND, If false, do not try to use JeMalloc.
-#
-find_path(JEMALLOC_INCLUDE_DIR
-  jemalloc/jemalloc.h)
-
-find_library(JEMALLOC_LIBRARIES
-  jemalloc)
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(JeMalloc DEFAULT_MSG
-    JEMALLOC_LIBRARIES JEMALLOC_INCLUDE_DIR)
-
-MARK_AS_ADVANCED(
-  JEMALLOC_INCLUDE_DIR
-  JEMALLOC_LIBRARIES
-)
@@ -1,23 +0,0 @@
-# - Find Snappy
-# Find the snappy compression library and includes
-#
-# SNAPPY_INCLUDE_DIR - where to find snappy.h, etc.
-# SNAPPY_LIBRARIES - List of libraries when using snappy.
-# SNAPPY_FOUND - True if snappy found.
-
-find_path(SNAPPY_INCLUDE_DIR
-  NAMES snappy.h
-  HINTS ${SNAPPY_ROOT_DIR}/include)
-
-find_library(SNAPPY_LIBRARIES
-  NAMES snappy
-  HINTS ${SNAPPY_ROOT_DIR}/lib)
-
-# handle the QUIETLY and REQUIRED arguments and set UUID_FOUND to TRUE if
-# all listed variables are TRUE
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(snappy DEFAULT_MSG SNAPPY_LIBRARIES SNAPPY_INCLUDE_DIR)
-
-mark_as_advanced(
-  SNAPPY_LIBRARIES
-  SNAPPY_INCLUDE_DIR)
@@ -45,7 +45,6 @@ TableBuilder* NewTableBuilder(
    uint32_t column_family_id, const std::string& column_family_name,
    WritableFileWriter* file, const CompressionType compression_type,
    const CompressionOptions& compression_opts,
-    int level,
    const std::string* compression_dict, const bool skip_filters) {
  assert((column_family_id ==
          TablePropertiesCollectorFactory::Context::kUnknownColumnFamily) ==
@@ -54,7 +53,7 @@ TableBuilder* NewTableBuilder(
      TableBuilderOptions(ioptions, internal_comparator,
                          int_tbl_prop_collector_factories, compression_type,
                          compression_opts, compression_dict, skip_filters,
-                          column_family_name, level),
+                          column_family_name),
      column_family_id, file);
 }

@@ -109,21 +108,19 @@ Status BuildTable(
      builder = NewTableBuilder(
          ioptions, internal_comparator, int_tbl_prop_collector_factories,
          column_family_id, column_family_name, file_writer.get(), compression,
-          compression_opts, level);
+          compression_opts);
    }

-    std::unique_ptr<RangeDelAggregator> range_del_agg;
-    range_del_agg.reset(new RangeDelAggregator(internal_comparator, snapshots));
    MergeHelper merge(env, internal_comparator.user_comparator(),
                      ioptions.merge_operator, nullptr, ioptions.info_log,
                      mutable_cf_options.min_partial_merge_operands,
                      true /* internal key corruption is not ok */,
                      snapshots.empty() ? 0 : snapshots.back());

-    CompactionIterator c_iter(
-        iter, internal_comparator.user_comparator(), &merge, kMaxSequenceNumber,
-        &snapshots, earliest_write_conflict_snapshot, env,
-        true /* internal key corruption is not ok */, range_del_agg.get());
+    CompactionIterator c_iter(iter, internal_comparator.user_comparator(),
+                              &merge, kMaxSequenceNumber, &snapshots,
+                              earliest_write_conflict_snapshot, env,
+                              true /* internal key corruption is not ok */);
    c_iter.SeekToFirst();
    for (; c_iter.Valid(); c_iter.Next()) {
      const Slice& key = c_iter.key();
@@ -12,13 +12,14 @@
 #include "db/table_properties_collector.h"
 #include "rocksdb/comparator.h"
 #include "rocksdb/env.h"
+#include "rocksdb/immutable_options.h"
 #include "rocksdb/listener.h"
 #include "rocksdb/options.h"
 #include "rocksdb/status.h"
 #include "rocksdb/table_properties.h"
 #include "rocksdb/types.h"
-#include "util/cf_options.h"
 #include "util/event_logger.h"
+#include "util/mutable_cf_options.h"

 namespace rocksdb {

@@ -48,7 +49,6 @@ TableBuilder* NewTableBuilder(
    uint32_t column_family_id, const std::string& column_family_name,
    WritableFileWriter* file, const CompressionType compression_type,
    const CompressionOptions& compression_opts,
-    int level,
    const std::string* compression_dict = nullptr,
    const bool skip_filters = false);

@@ -43,7 +43,6 @@ using rocksdb::CompactionFilterContext;
 using rocksdb::CompactionOptionsFIFO;
 using rocksdb::Comparator;
 using rocksdb::CompressionType;
-using rocksdb::WALRecoveryMode;
 using rocksdb::DB;
 using rocksdb::DBOptions;
 using rocksdb::Env;
@@ -124,7 +123,6 @@ struct rocksdb_compactionfilter_t : public CompactionFilter {
      char** new_value, size_t *new_value_length,
      unsigned char* value_changed);
  const char* (*name_)(void*);
-  unsigned char ignore_snapshots_;

  virtual ~rocksdb_compactionfilter_t() {
    (*destructor_)(state_);
@@ -150,8 +148,6 @@ struct rocksdb_compactionfilter_t : public CompactionFilter {
  }

  virtual const char* Name() const override { return (*name_)(state_); }
-
-  virtual bool IgnoreSnapshots() const override { return ignore_snapshots_; }
 };

 struct rocksdb_compactionfilterfactory_t : public CompactionFilterFactory {
@@ -273,31 +269,33 @@ struct rocksdb_mergeoperator_t : public MergeOperator {

  virtual const char* Name() const override { return (*name_)(state_); }

-  virtual bool FullMergeV2(const MergeOperationInput& merge_in,
-                           MergeOperationOutput* merge_out) const override {
-    size_t n = merge_in.operand_list.size();
+  virtual bool FullMerge(const Slice& key, const Slice* existing_value,
+                         const std::deque<std::string>& operand_list,
+                         std::string* new_value,
+                         Logger* logger) const override {
+    size_t n = operand_list.size();
    std::vector<const char*> operand_pointers(n);
    std::vector<size_t> operand_sizes(n);
    for (size_t i = 0; i < n; i++) {
-      Slice operand(merge_in.operand_list[i]);
+      Slice operand(operand_list[i]);
      operand_pointers[i] = operand.data();
      operand_sizes[i] = operand.size();
    }

    const char* existing_value_data = nullptr;
    size_t existing_value_len = 0;
-    if (merge_in.existing_value != nullptr) {
-      existing_value_data = merge_in.existing_value->data();
-      existing_value_len = merge_in.existing_value->size();
+    if (existing_value != nullptr) {
+      existing_value_data = existing_value->data();
+      existing_value_len = existing_value->size();
    }

    unsigned char success;
    size_t new_value_len;
    char* tmp_new_value = (*full_merge_)(
-        state_, merge_in.key.data(), merge_in.key.size(), existing_value_data,
-        existing_value_len, &operand_pointers[0], &operand_sizes[0],
-        static_cast<int>(n), &success, &new_value_len);
-    merge_out->new_value.assign(tmp_new_value, new_value_len);
+        state_, key.data(), key.size(), existing_value_data, existing_value_len,
+        &operand_pointers[0], &operand_sizes[0], static_cast<int>(n), &success,
+        &new_value_len);
+    new_value->assign(tmp_new_value, new_value_len);

    if (delete_value_ != nullptr) {
      (*delete_value_)(state_, tmp_new_value, new_value_len);
@@ -1516,9 +1514,14 @@ void rocksdb_options_set_max_bytes_for_level_multiplier(
  opt->rep.max_bytes_for_level_multiplier = n;
 }

-void rocksdb_options_set_max_compaction_bytes(rocksdb_options_t* opt,
-                                              uint64_t n) {
-  opt->rep.max_compaction_bytes = n;
+void rocksdb_options_set_expanded_compaction_factor(
+    rocksdb_options_t* opt, int n) {
+  opt->rep.expanded_compaction_factor = n;
+}
+
+void rocksdb_options_set_max_grandparent_overlap_factor(
+    rocksdb_options_t* opt, int n) {
+  opt->rep.max_grandparent_overlap_factor = n;
 }

 void rocksdb_options_set_max_bytes_for_level_multiplier_additional(
@@ -1555,10 +1558,6 @@ void rocksdb_options_set_level0_stop_writes_trigger(
 void rocksdb_options_set_max_mem_compaction_level(rocksdb_options_t* opt,
                                                  int n) {}

-void rocksdb_options_set_wal_recovery_mode(rocksdb_options_t* opt,int mode) {
-  opt->rep.wal_recovery_mode = static_cast<WALRecoveryMode>(mode);
-}
-
 void rocksdb_options_set_compression(rocksdb_options_t* opt, int t) {
  opt->rep.compression = static_cast<CompressionType>(t);
 }
@@ -1778,12 +1777,21 @@ void rocksdb_options_set_delete_obsolete_files_period_micros(
  opt->rep.delete_obsolete_files_period_micros = v;
 }

+void rocksdb_options_set_source_compaction_factor(
+    rocksdb_options_t* opt, int n) {
+  opt->rep.expanded_compaction_factor = n;
+}
+
 void rocksdb_options_prepare_for_bulk_load(rocksdb_options_t* opt) {
  opt->rep.PrepareForBulkLoad();
 }

 void rocksdb_options_set_memtable_vector_rep(rocksdb_options_t *opt) {
-  opt->rep.memtable_factory.reset(new rocksdb::VectorRepFactory);
+  static rocksdb::VectorRepFactory* factory = 0;
+  if (!factory) {
+    factory = new rocksdb::VectorRepFactory;
+  }
+  opt->rep.memtable_factory.reset(factory);
 }

 void rocksdb_options_set_memtable_prefix_bloom_size_ratio(
@@ -1791,34 +1799,44 @@ void rocksdb_options_set_memtable_prefix_bloom_size_ratio(
  opt->rep.memtable_prefix_bloom_size_ratio = v;
 }

-void rocksdb_options_set_memtable_huge_page_size(rocksdb_options_t* opt,
-                                                 size_t v) {
-  opt->rep.memtable_huge_page_size = v;
+void rocksdb_options_set_memtable_prefix_bloom_huge_page_tlb_size(
+    rocksdb_options_t* opt, size_t v) {
+  opt->rep.memtable_prefix_bloom_huge_page_tlb_size = v;
 }

 void rocksdb_options_set_hash_skip_list_rep(
    rocksdb_options_t *opt, size_t bucket_count,
    int32_t skiplist_height, int32_t skiplist_branching_factor) {
-  rocksdb::MemTableRepFactory* factory = rocksdb::NewHashSkipListRepFactory(
-      bucket_count, skiplist_height, skiplist_branching_factor);
+  static rocksdb::MemTableRepFactory* factory = 0;
+  if (!factory) {
+    factory = rocksdb::NewHashSkipListRepFactory(
+        bucket_count, skiplist_height, skiplist_branching_factor);
+  }
  opt->rep.memtable_factory.reset(factory);
 }

 void rocksdb_options_set_hash_link_list_rep(
    rocksdb_options_t *opt, size_t bucket_count) {
-  opt->rep.memtable_factory.reset(rocksdb::NewHashLinkListRepFactory(bucket_count));
+  static rocksdb::MemTableRepFactory* factory = 0;
+  if (!factory) {
+    factory = rocksdb::NewHashLinkListRepFactory(bucket_count);
+  }
+  opt->rep.memtable_factory.reset(factory);
 }

 void rocksdb_options_set_plain_table_factory(
    rocksdb_options_t *opt, uint32_t user_key_len, int bloom_bits_per_key,
    double hash_table_ratio, size_t index_sparseness) {
-  rocksdb::PlainTableOptions options;
-  options.user_key_len = user_key_len;
-  options.bloom_bits_per_key = bloom_bits_per_key;
-  options.hash_table_ratio = hash_table_ratio;
-  options.index_sparseness = index_sparseness;
+  static rocksdb::TableFactory* factory = 0;
+  if (!factory) {
+    rocksdb::PlainTableOptions options;
+    options.user_key_len = user_key_len;
+    options.bloom_bits_per_key = bloom_bits_per_key;
+    options.hash_table_ratio = hash_table_ratio;
+    options.index_sparseness = index_sparseness;

-  rocksdb::TableFactory* factory = rocksdb::NewPlainTableFactory(options);
+    factory = rocksdb::NewPlainTableFactory(options);
+  }
  opt->rep.table_factory.reset(factory);
 }

@@ -1903,17 +1921,10 @@ rocksdb_compactionfilter_t* rocksdb_compactionfilter_create(
  result->state_ = state;
  result->destructor_ = destructor;
  result->filter_ = filter;
-  result->ignore_snapshots_ = false;
  result->name_ = name;
  return result;
 }

-void rocksdb_compactionfilter_set_ignore_snapshots(
-  rocksdb_compactionfilter_t* filter,
-  unsigned char whether_ignore) {
-  filter->ignore_snapshots_ = whether_ignore;
-}
-
 void rocksdb_compactionfilter_destroy(rocksdb_compactionfilter_t* filter) {
  delete filter;
 }
@@ -575,7 +575,6 @@ int main(int argc, char** argv) {
    rocksdb_close(db);
    rocksdb_options_set_create_if_missing(options, 0);
    rocksdb_options_set_error_if_exists(options, 0);
-    rocksdb_options_set_wal_recovery_mode(options, 2);
    rocksdb_repair_db(options, dbname, &err);
    CheckNoError(err);
    db = rocksdb_open(options, dbname, &err);
@@ -944,28 +943,6 @@ int main(int argc, char** argv) {
    }
  }

-  // Simple sanity check that setting memtable rep works.
-  StartPhase("memtable_reps");
-  {
-    // Create database with vector memtable.
-    rocksdb_close(db);
-    rocksdb_destroy_db(options, dbname, &err);
-    CheckNoError(err);
-
-    rocksdb_options_set_memtable_vector_rep(options);
-    db = rocksdb_open(options, dbname, &err);
-    CheckNoError(err);
-
-    // Create database with hash skiplist memtable.
-    rocksdb_close(db);
-    rocksdb_destroy_db(options, dbname, &err);
-    CheckNoError(err);
-
-    rocksdb_options_set_hash_skip_list_rep(options, 5000, 4, 4);
-    db = rocksdb_open(options, dbname, &err);
-    CheckNoError(err);
-  }
-
  StartPhase("cleanup");
  rocksdb_close(db);
  rocksdb_options_destroy(options);
@@ -45,11 +45,6 @@ ColumnFamilyHandleImpl::ColumnFamilyHandleImpl(

 ColumnFamilyHandleImpl::~ColumnFamilyHandleImpl() {
  if (cfd_ != nullptr) {
-#ifndef ROCKSDB_LITE
-    for (auto& listener : cfd_->ioptions()->listeners) {
-      listener->OnColumnFamilyHandleDeletionStarted(this);
-    }
-#endif  // ROCKSDB_LITE
    // Job id == 0 means that this is not our background process, but rather
    // user thread
    JobContext job_context(0);
@@ -76,23 +71,26 @@ Status ColumnFamilyHandleImpl::GetDescriptor(ColumnFamilyDescriptor* desc) {
 #ifndef ROCKSDB_LITE
  // accessing mutable cf-options requires db mutex.
  InstrumentedMutexLock l(mutex_);
-  *desc = ColumnFamilyDescriptor(cfd()->GetName(), cfd()->GetLatestCFOptions());
+  *desc = ColumnFamilyDescriptor(
+      cfd()->GetName(),
+      BuildColumnFamilyOptions(*cfd()->options(),
+                               *cfd()->GetLatestMutableCFOptions()));
  return Status::OK();
 #else
  return Status::NotSupported();
 #endif  // !ROCKSDB_LITE
 }

-const Comparator* ColumnFamilyHandleImpl::GetComparator() const {
+const Comparator* ColumnFamilyHandleImpl::user_comparator() const {
  return cfd()->user_comparator();
 }

 void GetIntTblPropCollectorFactory(
-    const ImmutableCFOptions& ioptions,
+    const ColumnFamilyOptions& cf_options,
    std::vector<std::unique_ptr<IntTblPropCollectorFactory>>*
        int_tbl_prop_collector_factories) {
-  auto& collector_factories = ioptions.table_properties_collector_factories;
-  for (size_t i = 0; i < ioptions.table_properties_collector_factories.size();
+  auto& collector_factories = cf_options.table_properties_collector_factories;
+  for (size_t i = 0; i < cf_options.table_properties_collector_factories.size();
       ++i) {
    assert(collector_factories[i]);
    int_tbl_prop_collector_factories->emplace_back(
@@ -138,7 +136,7 @@ Status CheckConcurrentWritesSupported(const ColumnFamilyOptions& cf_options) {
  return Status::OK();
 }

-ColumnFamilyOptions SanitizeOptions(const ImmutableDBOptions& db_options,
+ColumnFamilyOptions SanitizeOptions(const DBOptions& db_options,
                                    const InternalKeyComparator* icmp,
                                    const ColumnFamilyOptions& src) {
  ColumnFamilyOptions result = src;
@@ -160,10 +158,6 @@ ColumnFamilyOptions SanitizeOptions(const ImmutableDBOptions& db_options,
  result.min_write_buffer_number_to_merge =
      std::min(result.min_write_buffer_number_to_merge,
               result.max_write_buffer_number - 1);
-  if (result.min_write_buffer_number_to_merge < 1) {
-    result.min_write_buffer_number_to_merge = 1;
-  }
-
  if (result.num_levels < 1) {
    result.num_levels = 1;
  }
@@ -210,10 +204,6 @@ ColumnFamilyOptions SanitizeOptions(const ImmutableDBOptions& db_options,
    result.level0_stop_writes_trigger = std::numeric_limits<int>::max();
  }

-  if (result.max_bytes_for_level_multiplier <= 0) {
-    result.max_bytes_for_level_multiplier = 1;
-  }
-
  if (result.level0_file_num_compaction_trigger == 0) {
    Warn(db_options.info_log.get(),
         "level0_file_num_compaction_trigger cannot be 0");
@@ -272,10 +262,6 @@ ColumnFamilyOptions SanitizeOptions(const ImmutableDBOptions& db_options,
    }
  }

-  if (result.max_compaction_bytes == 0) {
-    result.max_compaction_bytes = result.target_file_size_base * 25;
-  }
-
  return result;
 }

@@ -344,7 +330,7 @@ void SuperVersionUnrefHandle(void* ptr) {
 ColumnFamilyData::ColumnFamilyData(
    uint32_t id, const std::string& name, Version* _dummy_versions,
    Cache* _table_cache, WriteBufferManager* write_buffer_manager,
-    const ColumnFamilyOptions& cf_options, const ImmutableDBOptions& db_options,
+    const ColumnFamilyOptions& cf_options, const DBOptions* db_options,
    const EnvOptions& env_options, ColumnFamilySet* column_family_set)
    : id_(id),
      name_(name),
@@ -353,14 +339,14 @@ ColumnFamilyData::ColumnFamilyData(
      refs_(0),
      dropped_(false),
      internal_comparator_(cf_options.comparator),
-      initial_cf_options_(
-          SanitizeOptions(db_options, &internal_comparator_, cf_options)),
-      ioptions_(db_options, initial_cf_options_),
-      mutable_cf_options_(initial_cf_options_),
+      options_(*db_options,
+               SanitizeOptions(*db_options, &internal_comparator_, cf_options)),
+      ioptions_(options_),
+      mutable_cf_options_(options_, ioptions_),
      write_buffer_manager_(write_buffer_manager),
      mem_(nullptr),
-      imm_(ioptions_.min_write_buffer_number_to_merge,
-           ioptions_.max_write_buffer_number_to_maintain),
+      imm_(options_.min_write_buffer_number_to_merge,
+           options_.max_write_buffer_number_to_maintain),
      super_version_(nullptr),
      super_version_number_(0),
      local_sv_(new ThreadLocalPtr(&SuperVersionUnrefHandle)),
@@ -374,12 +360,12 @@ ColumnFamilyData::ColumnFamilyData(
  Ref();

  // Convert user defined table properties collector factories to internal ones.
-  GetIntTblPropCollectorFactory(ioptions_, &int_tbl_prop_collector_factories_);
+  GetIntTblPropCollectorFactory(options_, &int_tbl_prop_collector_factories_);

  // if _dummy_versions is nullptr, then this is a dummy column family.
  if (_dummy_versions != nullptr) {
    internal_stats_.reset(
-        new InternalStats(ioptions_.num_levels, db_options.env, this));
+        new InternalStats(ioptions_.num_levels, db_options->env, this));
    table_cache_.reset(new TableCache(ioptions_, env_options, _table_cache));
    if (ioptions_.compaction_style == kCompactionStyleLevel) {
      compaction_picker_.reset(
@@ -411,7 +397,7 @@ ColumnFamilyData::ColumnFamilyData(
    if (column_family_set_->NumberOfColumnFamilies() < 10) {
      Log(InfoLogLevel::INFO_LEVEL, ioptions_.info_log,
          "--------------- Options for column family [%s]:\n", name.c_str());
-      initial_cf_options_.Dump(ioptions_.info_log);
+      options_.DumpCFOptions(ioptions_.info_log);
    } else {
      Log(InfoLogLevel::INFO_LEVEL, ioptions_.info_log,
          "\t(skipping printing options)\n");
@@ -488,10 +474,6 @@ void ColumnFamilyData::SetDropped() {
  column_family_set_->RemoveColumnFamily(this);
 }

-ColumnFamilyOptions ColumnFamilyData::GetLatestCFOptions() const {
-  return BuildColumnFamilyOptions(initial_cf_options_, mutable_cf_options_);
-}
-
 const double kSlowdownRatio = 1.2;

 namespace {
@@ -549,31 +531,14 @@ int GetL0ThresholdSpeedupCompaction(int level0_file_num_compaction_trigger,
  // SanitizeOptions() ensures it.
  assert(level0_file_num_compaction_trigger <= level0_slowdown_writes_trigger);

-  if (level0_file_num_compaction_trigger < 0) {
-    return std::numeric_limits<int>::max();
-  }
-
-  const int64_t twice_level0_trigger =
-      static_cast<int64_t>(level0_file_num_compaction_trigger) * 2;
-
-  const int64_t one_fourth_trigger_slowdown =
-      static_cast<int64_t>(level0_file_num_compaction_trigger) +
-      ((level0_slowdown_writes_trigger - level0_file_num_compaction_trigger) /
-       4);
-
-  assert(twice_level0_trigger >= 0);
-  assert(one_fourth_trigger_slowdown >= 0);
-
  // 1/4 of the way between L0 compaction trigger threshold and slowdown
  // condition.
  // Or twice as compaction trigger, if it is smaller.
-  int64_t res = std::min(twice_level0_trigger, one_fourth_trigger_slowdown);
-  if (res >= port::kMaxInt32) {
-    return port::kMaxInt32;
-  } else {
-    // res fits in int
-    return static_cast<int>(res);
-  }
+  return std::min(level0_file_num_compaction_trigger * 2,
+                  level0_file_num_compaction_trigger +
+                      (level0_slowdown_writes_trigger -
+                       level0_file_num_compaction_trigger) /
+                          4);
 }
 }  // namespace

@@ -593,9 +558,8 @@ void ColumnFamilyData::RecalculateWriteStallConditions(
          "(waiting for flush), max_write_buffer_number is set to %d",
          name_.c_str(), imm()->NumNotFlushed(),
          mutable_cf_options.max_write_buffer_number);
-    } else if (!mutable_cf_options.disable_auto_compactions &&
-               vstorage->l0_delay_trigger_count() >=
-                   mutable_cf_options.level0_stop_writes_trigger) {
+    } else if (vstorage->l0_delay_trigger_count() >=
+               mutable_cf_options.level0_stop_writes_trigger) {
      write_controller_token_ = write_controller->GetStopToken();
      internal_stats_->AddCFStats(InternalStats::LEVEL0_NUM_FILES_TOTAL, 1);
      if (compaction_picker_->IsLevel0CompactionInProgress()) {
@@ -605,8 +569,7 @@ void ColumnFamilyData::RecalculateWriteStallConditions(
      Log(InfoLogLevel::WARN_LEVEL, ioptions_.info_log,
          "[%s] Stopping writes because we have %d level-0 files",
          name_.c_str(), vstorage->l0_delay_trigger_count());
-    } else if (!mutable_cf_options.disable_auto_compactions &&
-               mutable_cf_options.hard_pending_compaction_bytes_limit > 0 &&
+    } else if (mutable_cf_options.hard_pending_compaction_bytes_limit > 0 &&
               compaction_needed_bytes >=
                   mutable_cf_options.hard_pending_compaction_bytes_limit) {
      write_controller_token_ = write_controller->GetStopToken();
@@ -631,8 +594,7 @@ void ColumnFamilyData::RecalculateWriteStallConditions(
          name_.c_str(), imm()->NumNotFlushed(),
          mutable_cf_options.max_write_buffer_number,
          write_controller->delayed_write_rate());
-    } else if (!mutable_cf_options.disable_auto_compactions &&
-               mutable_cf_options.level0_slowdown_writes_trigger >= 0 &&
+    } else if (mutable_cf_options.level0_slowdown_writes_trigger >= 0 &&
               vstorage->l0_delay_trigger_count() >=
                   mutable_cf_options.level0_slowdown_writes_trigger) {
      write_controller_token_ =
@@ -649,8 +611,7 @@ void ColumnFamilyData::RecalculateWriteStallConditions(
          "rate %" PRIu64,
          name_.c_str(), vstorage->l0_delay_trigger_count(),
          write_controller->delayed_write_rate());
-    } else if (!mutable_cf_options.disable_auto_compactions &&
-               mutable_cf_options.soft_pending_compaction_bytes_limit > 0 &&
+    } else if (mutable_cf_options.soft_pending_compaction_bytes_limit > 0 &&
               vstorage->estimated_compaction_needed_bytes() >=
                   mutable_cf_options.soft_pending_compaction_bytes_limit) {
      write_controller_token_ =
@@ -740,13 +701,6 @@ Compaction* ColumnFamilyData::PickCompaction(
  return result;
 }

-bool ColumnFamilyData::RangeOverlapWithCompaction(
-    const Slice& smallest_user_key, const Slice& largest_user_key,
-    int level) const {
-  return compaction_picker_->RangeOverlapWithCompaction(
-      smallest_user_key, largest_user_key, level);
-}
-
 const int ColumnFamilyData::kCompactAllLevels = -1;
 const int ColumnFamilyData::kCompactToBaseLevel = -2;

@@ -897,14 +851,14 @@ Status ColumnFamilyData::SetOptions(
 #endif  // ROCKSDB_LITE

 ColumnFamilySet::ColumnFamilySet(const std::string& dbname,
-                                 const ImmutableDBOptions* db_options,
+                                 const DBOptions* db_options,
                                 const EnvOptions& env_options,
                                 Cache* table_cache,
                                 WriteBufferManager* write_buffer_manager,
                                 WriteController* write_controller)
    : max_column_family_(0),
      dummy_cfd_(new ColumnFamilyData(0, "", nullptr, nullptr, nullptr,
-                                      ColumnFamilyOptions(), *db_options,
+                                      ColumnFamilyOptions(), db_options,
                                      env_options, nullptr)),
      default_cfd_cache_(nullptr),
      db_name_(dbname),
@@ -976,7 +930,7 @@ ColumnFamilyData* ColumnFamilySet::CreateColumnFamily(
  assert(column_families_.find(name) == column_families_.end());
  ColumnFamilyData* new_cfd = new ColumnFamilyData(
      id, name, dummy_versions, table_cache_, write_buffer_manager_, options,
-      *db_options_, env_options_, this);
+      db_options_, env_options_, this);
  column_families_.insert({name, id});
  column_family_data_.insert({id, new_cfd});
  max_column_family_ = std::max(max_column_family_, id);
@@ -1053,7 +1007,8 @@ uint32_t GetColumnFamilyID(ColumnFamilyHandle* column_family) {
 const Comparator* GetColumnFamilyUserComparator(
    ColumnFamilyHandle* column_family) {
  if (column_family != nullptr) {
-    return column_family->GetComparator();
+    auto cfh = reinterpret_cast<ColumnFamilyHandleImpl*>(column_family);
+    return cfh->user_comparator();
  }
  return nullptr;
 }
@@ -15,15 +15,15 @@
 #include <atomic>

 #include "db/memtable_list.h"
-#include "db/table_cache.h"
-#include "db/table_properties_collector.h"
 #include "db/write_batch_internal.h"
 #include "db/write_controller.h"
+#include "db/table_cache.h"
+#include "db/table_properties_collector.h"
 #include "rocksdb/compaction_job_stats.h"
 #include "rocksdb/db.h"
 #include "rocksdb/env.h"
 #include "rocksdb/options.h"
-#include "util/cf_options.h"
+#include "util/mutable_cf_options.h"
 #include "util/thread_local.h"

 namespace rocksdb {
@@ -55,11 +55,11 @@ class ColumnFamilyHandleImpl : public ColumnFamilyHandle {
  // destroy without mutex
  virtual ~ColumnFamilyHandleImpl();
  virtual ColumnFamilyData* cfd() const { return cfd_; }
+  virtual const Comparator* user_comparator() const;

  virtual uint32_t GetID() const override;
  virtual const std::string& GetName() const override;
  virtual Status GetDescriptor(ColumnFamilyDescriptor* desc) override;
-  virtual const Comparator* GetComparator() const override;

 private:
  ColumnFamilyData* cfd_;
@@ -136,14 +136,14 @@ extern Status CheckCompressionSupported(const ColumnFamilyOptions& cf_options);
 extern Status CheckConcurrentWritesSupported(
    const ColumnFamilyOptions& cf_options);

-extern ColumnFamilyOptions SanitizeOptions(const ImmutableDBOptions& db_options,
+extern ColumnFamilyOptions SanitizeOptions(const DBOptions& db_options,
                                           const InternalKeyComparator* icmp,
                                           const ColumnFamilyOptions& src);
 // Wrap user defined table proproties collector factories `from cf_options`
 // into internal ones in int_tbl_prop_collector_factories. Add a system internal
 // one too.
 extern void GetIntTblPropCollectorFactory(
-    const ImmutableCFOptions& ioptions,
+    const ColumnFamilyOptions& cf_options,
    std::vector<std::unique_ptr<IntTblPropCollectorFactory>>*
        int_tbl_prop_collector_factories);

@@ -201,6 +201,9 @@ class ColumnFamilyData {
  void SetLogNumber(uint64_t log_number) { log_number_ = log_number; }
  uint64_t GetLogNumber() const { return log_number_; }

+  // !!! To be deprecated! Please don't not use this function anymore!
+  const Options* options() const { return &options_; }
+
  // thread-safe
  const EnvOptions* soptions() const;
  const ImmutableCFOptions* ioptions() const { return &ioptions_; }
@@ -215,12 +218,6 @@ class ColumnFamilyData {
  const MutableCFOptions* GetLatestMutableCFOptions() const {
    return &mutable_cf_options_;
  }
-
-  // REQUIRES: DB mutex held
-  // Build ColumnFamiliesOptions with immutable options and latest mutable
-  // options.
-  ColumnFamilyOptions GetLatestCFOptions() const;
-
 #ifndef ROCKSDB_LITE
  // REQUIRES: DB mutex held
  Status SetOptions(
@@ -252,13 +249,6 @@ class ColumnFamilyData {
  // REQUIRES: DB mutex held
  Compaction* PickCompaction(const MutableCFOptions& mutable_options,
                             LogBuffer* log_buffer);
-
-  // Check if the passed range overlap with any running compactions.
-  // REQUIRES: DB mutex held
-  bool RangeOverlapWithCompaction(const Slice& smallest_user_key,
-                                  const Slice& largest_user_key,
-                                  int level) const;
-
  // A flag to tell a manual compaction is to compact all levels together
  // instad of for specific level.
  static const int kCompactAllLevels;
@@ -335,8 +325,7 @@ class ColumnFamilyData {
                   Version* dummy_versions, Cache* table_cache,
                   WriteBufferManager* write_buffer_manager,
                   const ColumnFamilyOptions& options,
-                   const ImmutableDBOptions& db_options,
-                   const EnvOptions& env_options,
+                   const DBOptions* db_options, const EnvOptions& env_options,
                   ColumnFamilySet* column_family_set);

  uint32_t id_;
@@ -351,7 +340,7 @@ class ColumnFamilyData {
  std::vector<std::unique_ptr<IntTblPropCollectorFactory>>
      int_tbl_prop_collector_factories_;

-  const ColumnFamilyOptions initial_cf_options_;
+  const Options options_;
  const ImmutableCFOptions ioptions_;
  MutableCFOptions mutable_cf_options_;

@@ -447,8 +436,7 @@ class ColumnFamilySet {
    ColumnFamilyData* current_;
  };

-  ColumnFamilySet(const std::string& dbname,
-                  const ImmutableDBOptions* db_options,
+  ColumnFamilySet(const std::string& dbname, const DBOptions* db_options,
                  const EnvOptions& env_options, Cache* table_cache,
                  WriteBufferManager* write_buffer_manager,
                  WriteController* write_controller);
@@ -505,7 +493,7 @@ class ColumnFamilySet {
  ColumnFamilyData* default_cfd_cache_;

  const std::string db_name_;
-  const ImmutableDBOptions* const db_options_;
+  const DBOptions* const db_options_;
  const EnvOptions env_options_;
  Cache* table_cache_;
  WriteBufferManager* write_buffer_manager_;
@@ -1,8 +1,7 @@
 //  Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
-//  This source code is licensed under the BSD-style license found in
-//  the LICENSE file in the root directory of this source tree. An
-//  additional grant of patent rights can be found in the PATENTS file
-//  in the same directory.
+//  This source code is licensed under the BSD-style license found in the
+//  LICENSE file in the root directory of this source tree. An additional grant
+//  of patent rights can be found in the PATENTS file in the same directory.
 //
 // Copyright (c) 2011 The LevelDB Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
@@ -280,23 +279,29 @@ class ColumnFamilyTest : public testing::Test {
    }
  }

-#ifndef ROCKSDB_LITE  // TEST functions in DB are not supported in lite
  void WaitForFlush(int cf) {
+#ifndef ROCKSDB_LITE  // TEST functions are not supported in lite
    ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable(handles_[cf]));
+#endif  // !ROCKSDB_LITE
  }

  void WaitForCompaction() {
+#ifndef ROCKSDB_LITE  // TEST functions are not supported in lite
    ASSERT_OK(dbfull()->TEST_WaitForCompact());
+#endif  // !ROCKSDB_LITE
  }

  uint64_t MaxTotalInMemoryState() {
+#ifndef ROCKSDB_LITE
    return dbfull()->TEST_MaxTotalInMemoryState();
+#else
+    return 0;
+#endif  // !ROCKSDB_LITE
  }

  void AssertMaxTotalInMemoryState(uint64_t value) {
    ASSERT_EQ(value, MaxTotalInMemoryState());
  }
-#endif  // !ROCKSDB_LITE

  Status Put(int cf, const std::string& key, const std::string& value) {
    return db_->Put(WriteOptions(), handles_[cf], Slice(key), Slice(value));
@@ -792,7 +797,6 @@ TEST_F(ColumnFamilyTest, IgnoreRecoveredLog) {
  }
 }

-#ifndef ROCKSDB_LITE  // TEST functions used are not supported
 TEST_F(ColumnFamilyTest, FlushTest) {
  Open();
  CreateColumnFamiliesAndReopen({"one", "two"});
@@ -907,47 +911,7 @@ TEST_F(ColumnFamilyTest, LogDeletionTest) {
  AssertCountLiveLogFiles(4);
  Close();
 }
-#endif  // !ROCKSDB_LITE

-TEST_F(ColumnFamilyTest, CrashAfterFlush) {
-  std::unique_ptr<FaultInjectionTestEnv> fault_env(
-      new FaultInjectionTestEnv(env_));
-  db_options_.env = fault_env.get();
-  Open();
-  CreateColumnFamilies({"one"});
-
-  WriteBatch batch;
-  batch.Put(handles_[0], Slice("foo"), Slice("bar"));
-  batch.Put(handles_[1], Slice("foo"), Slice("bar"));
-  ASSERT_OK(db_->Write(WriteOptions(), &batch));
-  Flush(0);
-  fault_env->SetFilesystemActive(false);
-
-  std::vector<std::string> names;
-  for (auto name : names_) {
-    if (name != "") {
-      names.push_back(name);
-    }
-  }
-  Close();
-  fault_env->DropUnsyncedFileData();
-  fault_env->ResetState();
-  Open(names, {});
-
-  // Write batch should be atomic.
-  ASSERT_EQ(Get(0, "foo"), Get(1, "foo"));
-
-  Close();
-  db_options_.env = env_;
-}
-
-TEST_F(ColumnFamilyTest, OpenNonexistentColumnFamily) {
-  ASSERT_OK(TryOpen({"default"}));
-  Close();
-  ASSERT_TRUE(TryOpen({"default", "dne"}).IsInvalidArgument());
-}
-
-#ifndef ROCKSDB_LITE  // WaitForFlush() is not supported
 // Makes sure that obsolete log files get deleted
 TEST_F(ColumnFamilyTest, DifferentWriteBufferSizes) {
  // disable flushing stale column families
@@ -1052,7 +1016,6 @@ TEST_F(ColumnFamilyTest, DifferentWriteBufferSizes) {
  AssertCountLiveLogFiles(7);
  Close();
 }
-#endif  // !ROCKSDB_LITE

 #ifndef ROCKSDB_LITE  // Cuckoo is not supported in lite
 TEST_F(ColumnFamilyTest, MemtableNotSupportSnapshot) {
@@ -1077,39 +1040,6 @@ TEST_F(ColumnFamilyTest, MemtableNotSupportSnapshot) {
 }
 #endif  // !ROCKSDB_LITE

-class TestComparator : public Comparator {
-  int Compare(const rocksdb::Slice& a, const rocksdb::Slice& b) const override {
-    return 0;
-  }
-  const char* Name() const override { return "Test"; }
-  void FindShortestSeparator(std::string* start,
-                             const rocksdb::Slice& limit) const override {}
-  void FindShortSuccessor(std::string* key) const override {}
-};
-
-static TestComparator third_comparator;
-static TestComparator fourth_comparator;
-
-// Test that we can retrieve the comparator from a created CF
-TEST_F(ColumnFamilyTest, GetComparator) {
-  Open();
-  // Add a column family with no comparator specified
-  CreateColumnFamilies({"first"});
-  const Comparator* comp = handles_[0]->GetComparator();
-  ASSERT_EQ(comp, BytewiseComparator());
-
-  // Add three column families - one with no comparator and two
-  // with comparators specified
-  ColumnFamilyOptions second, third, fourth;
-  second.comparator = &third_comparator;
-  third.comparator = &fourth_comparator;
-  CreateColumnFamilies({"second", "third", "fourth"}, {second, third, fourth});
-  ASSERT_EQ(handles_[1]->GetComparator(), BytewiseComparator());
-  ASSERT_EQ(handles_[2]->GetComparator(), &third_comparator);
-  ASSERT_EQ(handles_[3]->GetComparator(), &fourth_comparator);
-  Close();
-}
-
 TEST_F(ColumnFamilyTest, DifferentMergeOperators) {
  Open();
  CreateColumnFamilies({"first", "second"});
@@ -1140,7 +1070,6 @@ TEST_F(ColumnFamilyTest, DifferentMergeOperators) {
  Close();
 }

-#ifndef ROCKSDB_LITE  // WaitForFlush() is not supported
 TEST_F(ColumnFamilyTest, DifferentCompactionStyles) {
  Open();
  CreateColumnFamilies({"one", "two"});
@@ -1152,8 +1081,7 @@ TEST_F(ColumnFamilyTest, DifferentCompactionStyles) {
  default_cf.num_levels = 3;
  default_cf.write_buffer_size = 64 << 10;  // 64KB
  default_cf.target_file_size_base = 30 << 10;
-  default_cf.max_compaction_bytes = static_cast<uint64_t>(1) << 60;
-
+  default_cf.source_compaction_factor = 100;
  BlockBasedTableOptions table_options;
  table_options.no_block_cache = true;
  default_cf.table_factory.reset(NewBlockBasedTableFactory(table_options));
@@ -1209,7 +1137,6 @@ TEST_F(ColumnFamilyTest, DifferentCompactionStyles) {

  Close();
 }
-#endif  // !ROCKSDB_LITE

 #ifndef ROCKSDB_LITE
 // Sync points not supported in RocksDB Lite
@@ -1226,7 +1153,7 @@ TEST_F(ColumnFamilyTest, MultipleManualCompactions) {
  default_cf.num_levels = 3;
  default_cf.write_buffer_size = 64 << 10;  // 64KB
  default_cf.target_file_size_base = 30 << 10;
-  default_cf.max_compaction_bytes = default_cf.target_file_size_base * 1100;
+  default_cf.source_compaction_factor = 100;
  BlockBasedTableOptions table_options;
  table_options.no_block_cache = true;
  default_cf.table_factory.reset(NewBlockBasedTableFactory(table_options));
@@ -1325,7 +1252,7 @@ TEST_F(ColumnFamilyTest, AutomaticAndManualCompactions) {
  default_cf.num_levels = 3;
  default_cf.write_buffer_size = 64 << 10;  // 64KB
  default_cf.target_file_size_base = 30 << 10;
-  default_cf.max_compaction_bytes = default_cf.target_file_size_base * 1100;
+  default_cf.source_compaction_factor = 100;
  BlockBasedTableOptions table_options;
  table_options.no_block_cache = true;
  default_cf.table_factory.reset(NewBlockBasedTableFactory(table_options));
@@ -1418,7 +1345,7 @@ TEST_F(ColumnFamilyTest, ManualAndAutomaticCompactions) {
  default_cf.num_levels = 3;
  default_cf.write_buffer_size = 64 << 10;  // 64KB
  default_cf.target_file_size_base = 30 << 10;
-  default_cf.max_compaction_bytes = default_cf.target_file_size_base * 1100;
+  default_cf.source_compaction_factor = 100;
  BlockBasedTableOptions table_options;
  table_options.no_block_cache = true;
  default_cf.table_factory.reset(NewBlockBasedTableFactory(table_options));
@@ -1514,7 +1441,7 @@ TEST_F(ColumnFamilyTest, SameCFManualManualCompactions) {
  default_cf.num_levels = 3;
  default_cf.write_buffer_size = 64 << 10;  // 64KB
  default_cf.target_file_size_base = 30 << 10;
-  default_cf.max_compaction_bytes = default_cf.target_file_size_base * 1100;
+  default_cf.source_compaction_factor = 100;
  BlockBasedTableOptions table_options;
  table_options.no_block_cache = true;
  default_cf.table_factory.reset(NewBlockBasedTableFactory(table_options));
@@ -1613,7 +1540,7 @@ TEST_F(ColumnFamilyTest, SameCFManualAutomaticCompactions) {
  default_cf.num_levels = 3;
  default_cf.write_buffer_size = 64 << 10;  // 64KB
  default_cf.target_file_size_base = 30 << 10;
-  default_cf.max_compaction_bytes = default_cf.target_file_size_base * 1100;
+  default_cf.source_compaction_factor = 100;
  BlockBasedTableOptions table_options;
  table_options.no_block_cache = true;
  default_cf.table_factory.reset(NewBlockBasedTableFactory(table_options));
@@ -1703,7 +1630,7 @@ TEST_F(ColumnFamilyTest, SameCFManualAutomaticCompactionsLevel) {
  default_cf.num_levels = 3;
  default_cf.write_buffer_size = 64 << 10;  // 64KB
  default_cf.target_file_size_base = 30 << 10;
-  default_cf.max_compaction_bytes = default_cf.target_file_size_base * 1100;
+  default_cf.source_compaction_factor = 100;
  BlockBasedTableOptions table_options;
  table_options.no_block_cache = true;
  default_cf.table_factory.reset(NewBlockBasedTableFactory(table_options));
@@ -1800,7 +1727,7 @@ TEST_F(ColumnFamilyTest, SameCFManualAutomaticConflict) {
  default_cf.num_levels = 3;
  default_cf.write_buffer_size = 64 << 10;  // 64KB
  default_cf.target_file_size_base = 30 << 10;
-  default_cf.max_compaction_bytes = default_cf.target_file_size_base * 1100;
+  default_cf.source_compaction_factor = 100;
  BlockBasedTableOptions table_options;
  table_options.no_block_cache = true;
  default_cf.table_factory.reset(NewBlockBasedTableFactory(table_options));
@@ -1920,7 +1847,7 @@ TEST_F(ColumnFamilyTest, SameCFAutomaticManualCompactions) {
  default_cf.num_levels = 3;
  default_cf.write_buffer_size = 64 << 10;  // 64KB
  default_cf.target_file_size_base = 30 << 10;
-  default_cf.max_compaction_bytes = default_cf.target_file_size_base * 1100;
+  default_cf.source_compaction_factor = 100;
  BlockBasedTableOptions table_options;
  table_options.no_block_cache = true;
  default_cf.table_factory.reset(NewBlockBasedTableFactory(table_options));
@@ -2103,7 +2030,6 @@ TEST_F(ColumnFamilyTest, ReadOnlyDBTest) {
 }
 #endif  // !ROCKSDB_LITE

-#ifndef ROCKSDB_LITE  //  WaitForFlush() is not supported in lite
 TEST_F(ColumnFamilyTest, DontRollEmptyLogs) {
  Open();
  CreateColumnFamiliesAndReopen({"one", "two", "three", "four"});
@@ -2125,9 +2051,7 @@ TEST_F(ColumnFamilyTest, DontRollEmptyLogs) {
  ASSERT_EQ(static_cast<size_t>(total_new_writable_files), handles_.size() + 1);
  Close();
 }
-#endif  // !ROCKSDB_LITE

-#ifndef ROCKSDB_LITE  //  WaitForCompaction() is not supported in lite
 TEST_F(ColumnFamilyTest, FlushStaleColumnFamilies) {
  Open();
  CreateColumnFamilies({"one", "two"});
@@ -2161,7 +2085,6 @@ TEST_F(ColumnFamilyTest, FlushStaleColumnFamilies) {
  ASSERT_EQ(0, dbfull()->TEST_total_log_size());
  Close();
 }
-#endif  // !ROCKSDB_LITE

 TEST_F(ColumnFamilyTest, CreateMissingColumnFamilies) {
  Status s = TryOpen({"one", "two"});
@@ -2188,8 +2111,8 @@ TEST_F(ColumnFamilyTest, SanitizeOptions) {
            original.write_buffer_size =
                l * 4 * 1024 * 1024 + i * 1024 * 1024 + j * 1024 + k;

-            ColumnFamilyOptions result = SanitizeOptions(
-                ImmutableDBOptions(db_options), nullptr, original);
+            ColumnFamilyOptions result =
+                SanitizeOptions(db_options, nullptr, original);
            ASSERT_TRUE(result.level0_stop_writes_trigger >=
                        result.level0_slowdown_writes_trigger);
            ASSERT_TRUE(result.level0_slowdown_writes_trigger >=
@@ -2450,13 +2373,14 @@ TEST_F(ColumnFamilyTest, WriteStallSingleColumnFamily) {

  VersionStorageInfo* vstorage = cfd->current()->storage_info();

-  MutableCFOptions mutable_cf_options(column_family_options_);
+  MutableCFOptions mutable_cf_options(
+      Options(db_options_, column_family_options_),
+      ImmutableCFOptions(Options(db_options_, column_family_options_)));

  mutable_cf_options.level0_slowdown_writes_trigger = 20;
  mutable_cf_options.level0_stop_writes_trigger = 10000;
  mutable_cf_options.soft_pending_compaction_bytes_limit = 200;
  mutable_cf_options.hard_pending_compaction_bytes_limit = 2000;
-  mutable_cf_options.disable_auto_compactions = false;

  vstorage->TEST_set_estimated_compaction_needed_bytes(50);
  cfd->RecalculateWriteStallConditions(mutable_cf_options);
@@ -2468,7 +2392,7 @@ TEST_F(ColumnFamilyTest, WriteStallSingleColumnFamily) {
  ASSERT_TRUE(!dbfull()->TEST_write_controler().IsStopped());
  ASSERT_TRUE(dbfull()->TEST_write_controler().NeedsDelay());
  ASSERT_EQ(kBaseRate, dbfull()->TEST_write_controler().delayed_write_rate());
-  ASSERT_EQ(6, dbfull()->TEST_BGCompactionsAllowed());
+  ASSERT_EQ(6, dbfull()->BGCompactionsAllowed());

  vstorage->TEST_set_estimated_compaction_needed_bytes(400);
  cfd->RecalculateWriteStallConditions(mutable_cf_options);
@@ -2476,7 +2400,7 @@ TEST_F(ColumnFamilyTest, WriteStallSingleColumnFamily) {
  ASSERT_TRUE(dbfull()->TEST_write_controler().NeedsDelay());
  ASSERT_EQ(kBaseRate / 1.2,
            dbfull()->TEST_write_controler().delayed_write_rate());
-  ASSERT_EQ(6, dbfull()->TEST_BGCompactionsAllowed());
+  ASSERT_EQ(6, dbfull()->BGCompactionsAllowed());

  vstorage->TEST_set_estimated_compaction_needed_bytes(500);
  cfd->RecalculateWriteStallConditions(mutable_cf_options);
@@ -2532,7 +2456,7 @@ TEST_F(ColumnFamilyTest, WriteStallSingleColumnFamily) {
  cfd->RecalculateWriteStallConditions(mutable_cf_options);
  ASSERT_TRUE(dbfull()->TEST_write_controler().IsStopped());
  ASSERT_TRUE(!dbfull()->TEST_write_controler().NeedsDelay());
-  ASSERT_EQ(6, dbfull()->TEST_BGCompactionsAllowed());
+  ASSERT_EQ(6, dbfull()->BGCompactionsAllowed());

  vstorage->TEST_set_estimated_compaction_needed_bytes(3001);
  cfd->RecalculateWriteStallConditions(mutable_cf_options);
@@ -2557,7 +2481,7 @@ TEST_F(ColumnFamilyTest, WriteStallSingleColumnFamily) {
  ASSERT_TRUE(dbfull()->TEST_write_controler().NeedsDelay());
  ASSERT_EQ(kBaseRate / 1.2,
            dbfull()->TEST_write_controler().delayed_write_rate());
-  ASSERT_EQ(6, dbfull()->TEST_BGCompactionsAllowed());
+  ASSERT_EQ(6, dbfull()->BGCompactionsAllowed());

  vstorage->set_l0_delay_trigger_count(101);
  cfd->RecalculateWriteStallConditions(mutable_cf_options);
@@ -2603,17 +2527,16 @@ TEST_F(ColumnFamilyTest, WriteStallSingleColumnFamily) {
  vstorage->set_l0_delay_trigger_count(50);
  cfd->RecalculateWriteStallConditions(mutable_cf_options);
  ASSERT_TRUE(!dbfull()->TEST_write_controler().IsStopped());
-  ASSERT_TRUE(!dbfull()->TEST_write_controler().NeedsDelay());
+  ASSERT_TRUE(dbfull()->TEST_write_controler().NeedsDelay());
  ASSERT_EQ(kBaseRate, dbfull()->TEST_write_controler().delayed_write_rate());

  vstorage->set_l0_delay_trigger_count(60);
  vstorage->TEST_set_estimated_compaction_needed_bytes(300);
  cfd->RecalculateWriteStallConditions(mutable_cf_options);
  ASSERT_TRUE(!dbfull()->TEST_write_controler().IsStopped());
-  ASSERT_TRUE(!dbfull()->TEST_write_controler().NeedsDelay());
+  ASSERT_TRUE(dbfull()->TEST_write_controler().NeedsDelay());
  ASSERT_EQ(kBaseRate, dbfull()->TEST_write_controler().delayed_write_rate());

-  mutable_cf_options.disable_auto_compactions = false;
  vstorage->set_l0_delay_trigger_count(70);
  vstorage->TEST_set_estimated_compaction_needed_bytes(500);
  cfd->RecalculateWriteStallConditions(mutable_cf_options);
@@ -2621,6 +2544,7 @@ TEST_F(ColumnFamilyTest, WriteStallSingleColumnFamily) {
  ASSERT_TRUE(dbfull()->TEST_write_controler().NeedsDelay());
  ASSERT_EQ(kBaseRate, dbfull()->TEST_write_controler().delayed_write_rate());

+  mutable_cf_options.disable_auto_compactions = false;
  vstorage->set_l0_delay_trigger_count(71);
  vstorage->TEST_set_estimated_compaction_needed_bytes(501);
  cfd->RecalculateWriteStallConditions(mutable_cf_options);
@@ -2639,7 +2563,9 @@ TEST_F(ColumnFamilyTest, CompactionSpeedupSingleColumnFamily) {

  VersionStorageInfo* vstorage = cfd->current()->storage_info();

-  MutableCFOptions mutable_cf_options(column_family_options_);
+  MutableCFOptions mutable_cf_options(
+      Options(db_options_, column_family_options_),
+      ImmutableCFOptions(Options(db_options_, column_family_options_)));

  // Speed up threshold = min(4 * 2, 4 + (36 - 4)/4) = 8
  mutable_cf_options.level0_file_num_compaction_trigger = 4;
@@ -2651,31 +2577,31 @@ TEST_F(ColumnFamilyTest, CompactionSpeedupSingleColumnFamily) {

  vstorage->TEST_set_estimated_compaction_needed_bytes(40);
  cfd->RecalculateWriteStallConditions(mutable_cf_options);
-  ASSERT_EQ(2, dbfull()->TEST_BGCompactionsAllowed());
+  ASSERT_EQ(2, dbfull()->BGCompactionsAllowed());

  vstorage->TEST_set_estimated_compaction_needed_bytes(50);
  cfd->RecalculateWriteStallConditions(mutable_cf_options);
-  ASSERT_EQ(6, dbfull()->TEST_BGCompactionsAllowed());
+  ASSERT_EQ(6, dbfull()->BGCompactionsAllowed());

  vstorage->TEST_set_estimated_compaction_needed_bytes(300);
  cfd->RecalculateWriteStallConditions(mutable_cf_options);
-  ASSERT_EQ(6, dbfull()->TEST_BGCompactionsAllowed());
+  ASSERT_EQ(6, dbfull()->BGCompactionsAllowed());

  vstorage->TEST_set_estimated_compaction_needed_bytes(45);
  cfd->RecalculateWriteStallConditions(mutable_cf_options);
-  ASSERT_EQ(2, dbfull()->TEST_BGCompactionsAllowed());
+  ASSERT_EQ(2, dbfull()->BGCompactionsAllowed());

  vstorage->set_l0_delay_trigger_count(7);
  cfd->RecalculateWriteStallConditions(mutable_cf_options);
-  ASSERT_EQ(2, dbfull()->TEST_BGCompactionsAllowed());
+  ASSERT_EQ(2, dbfull()->BGCompactionsAllowed());

  vstorage->set_l0_delay_trigger_count(9);
  cfd->RecalculateWriteStallConditions(mutable_cf_options);
-  ASSERT_EQ(6, dbfull()->TEST_BGCompactionsAllowed());
+  ASSERT_EQ(6, dbfull()->BGCompactionsAllowed());

  vstorage->set_l0_delay_trigger_count(6);
  cfd->RecalculateWriteStallConditions(mutable_cf_options);
-  ASSERT_EQ(2, dbfull()->TEST_BGCompactionsAllowed());
+  ASSERT_EQ(2, dbfull()->BGCompactionsAllowed());

  // Speed up threshold = min(4 * 2, 4 + (12 - 4)/4) = 6
  mutable_cf_options.level0_file_num_compaction_trigger = 4;
@@ -2684,15 +2610,15 @@ TEST_F(ColumnFamilyTest, CompactionSpeedupSingleColumnFamily) {

  vstorage->set_l0_delay_trigger_count(5);
  cfd->RecalculateWriteStallConditions(mutable_cf_options);
-  ASSERT_EQ(2, dbfull()->TEST_BGCompactionsAllowed());
+  ASSERT_EQ(2, dbfull()->BGCompactionsAllowed());

  vstorage->set_l0_delay_trigger_count(7);
  cfd->RecalculateWriteStallConditions(mutable_cf_options);
-  ASSERT_EQ(6, dbfull()->TEST_BGCompactionsAllowed());
+  ASSERT_EQ(6, dbfull()->BGCompactionsAllowed());

  vstorage->set_l0_delay_trigger_count(3);
  cfd->RecalculateWriteStallConditions(mutable_cf_options);
-  ASSERT_EQ(2, dbfull()->TEST_BGCompactionsAllowed());
+  ASSERT_EQ(2, dbfull()->BGCompactionsAllowed());
 }

 TEST_F(ColumnFamilyTest, WriteStallTwoColumnFamilies) {
@@ -2708,7 +2634,9 @@ TEST_F(ColumnFamilyTest, WriteStallTwoColumnFamilies) {
      static_cast<ColumnFamilyHandleImpl*>(handles_[1])->cfd();
  VersionStorageInfo* vstorage1 = cfd1->current()->storage_info();

-  MutableCFOptions mutable_cf_options(column_family_options_);
+  MutableCFOptions mutable_cf_options(
+      Options(db_options_, column_family_options_),
+      ImmutableCFOptions(Options(db_options_, column_family_options_)));
  mutable_cf_options.level0_slowdown_writes_trigger = 20;
  mutable_cf_options.level0_stop_writes_trigger = 10000;
  mutable_cf_options.soft_pending_compaction_bytes_limit = 200;
@@ -2790,7 +2718,9 @@ TEST_F(ColumnFamilyTest, CompactionSpeedupTwoColumnFamilies) {
      static_cast<ColumnFamilyHandleImpl*>(handles_[1])->cfd();
  VersionStorageInfo* vstorage1 = cfd1->current()->storage_info();

-  MutableCFOptions mutable_cf_options(column_family_options_);
+  MutableCFOptions mutable_cf_options(
+      Options(db_options_, column_family_options_),
+      ImmutableCFOptions(Options(db_options_, column_family_options_)));
  // Speed up threshold = min(4 * 2, 4 + (36 - 4)/4) = 8
  mutable_cf_options.level0_file_num_compaction_trigger = 4;
  mutable_cf_options.level0_slowdown_writes_trigger = 36;
@@ -2804,262 +2734,43 @@ TEST_F(ColumnFamilyTest, CompactionSpeedupTwoColumnFamilies) {

  vstorage->TEST_set_estimated_compaction_needed_bytes(40);
  cfd->RecalculateWriteStallConditions(mutable_cf_options);
-  ASSERT_EQ(2, dbfull()->TEST_BGCompactionsAllowed());
+  ASSERT_EQ(2, dbfull()->BGCompactionsAllowed());

  vstorage->TEST_set_estimated_compaction_needed_bytes(60);
  cfd1->RecalculateWriteStallConditions(mutable_cf_options);
-  ASSERT_EQ(2, dbfull()->TEST_BGCompactionsAllowed());
+  ASSERT_EQ(2, dbfull()->BGCompactionsAllowed());
  cfd->RecalculateWriteStallConditions(mutable_cf_options);
-  ASSERT_EQ(6, dbfull()->TEST_BGCompactionsAllowed());
+  ASSERT_EQ(6, dbfull()->BGCompactionsAllowed());

  vstorage1->TEST_set_estimated_compaction_needed_bytes(30);
  cfd1->RecalculateWriteStallConditions(mutable_cf_options);
-  ASSERT_EQ(6, dbfull()->TEST_BGCompactionsAllowed());
+  ASSERT_EQ(6, dbfull()->BGCompactionsAllowed());

  vstorage1->TEST_set_estimated_compaction_needed_bytes(70);
  cfd1->RecalculateWriteStallConditions(mutable_cf_options);
-  ASSERT_EQ(6, dbfull()->TEST_BGCompactionsAllowed());
+  ASSERT_EQ(6, dbfull()->BGCompactionsAllowed());

  vstorage->TEST_set_estimated_compaction_needed_bytes(20);
  cfd->RecalculateWriteStallConditions(mutable_cf_options);
-  ASSERT_EQ(6, dbfull()->TEST_BGCompactionsAllowed());
+  ASSERT_EQ(6, dbfull()->BGCompactionsAllowed());

  vstorage1->TEST_set_estimated_compaction_needed_bytes(3);
  cfd1->RecalculateWriteStallConditions(mutable_cf_options);
-  ASSERT_EQ(2, dbfull()->TEST_BGCompactionsAllowed());
+  ASSERT_EQ(2, dbfull()->BGCompactionsAllowed());

  vstorage->set_l0_delay_trigger_count(9);
  cfd->RecalculateWriteStallConditions(mutable_cf_options);
-  ASSERT_EQ(6, dbfull()->TEST_BGCompactionsAllowed());
+  ASSERT_EQ(6, dbfull()->BGCompactionsAllowed());

  vstorage1->set_l0_delay_trigger_count(2);
  cfd1->RecalculateWriteStallConditions(mutable_cf_options);
-  ASSERT_EQ(6, dbfull()->TEST_BGCompactionsAllowed());
+  ASSERT_EQ(6, dbfull()->BGCompactionsAllowed());

  vstorage->set_l0_delay_trigger_count(0);
  cfd->RecalculateWriteStallConditions(mutable_cf_options);
-  ASSERT_EQ(2, dbfull()->TEST_BGCompactionsAllowed());
+  ASSERT_EQ(2, dbfull()->BGCompactionsAllowed());
 }

-#ifndef ROCKSDB_LITE
-TEST_F(ColumnFamilyTest, FlushCloseWALFiles) {
-  SpecialEnv env(Env::Default());
-  db_options_.env = &env;
-  db_options_.max_background_flushes = 1;
-  column_family_options_.memtable_factory.reset(new SpecialSkipListFactory(2));
-  Open();
-  CreateColumnFamilies({"one"});
-  ASSERT_OK(Put(1, "fodor", "mirko"));
-  ASSERT_OK(Put(0, "fodor", "mirko"));
-  ASSERT_OK(Put(1, "fodor", "mirko"));
-
-  rocksdb::SyncPoint::GetInstance()->LoadDependency({
-      {"DBImpl::BGWorkFlush:done", "FlushCloseWALFiles:0"},
-  });
-  rocksdb::SyncPoint::GetInstance()->EnableProcessing();
-
-  // Block flush jobs from running
-  test::SleepingBackgroundTask sleeping_task;
-  env_->Schedule(&test::SleepingBackgroundTask::DoSleepTask, &sleeping_task,
-                 Env::Priority::HIGH);
-
-  WriteOptions wo;
-  wo.sync = true;
-  ASSERT_OK(db_->Put(wo, handles_[1], "fodor", "mirko"));
-
-  ASSERT_EQ(2, env.num_open_wal_file_.load());
-
-  sleeping_task.WakeUp();
-  sleeping_task.WaitUntilDone();
-  TEST_SYNC_POINT("FlushCloseWALFiles:0");
-  rocksdb::SyncPoint::GetInstance()->DisableProcessing();
-  ASSERT_EQ(1, env.num_open_wal_file_.load());
-
-  Reopen();
-  ASSERT_EQ("mirko", Get(0, "fodor"));
-  ASSERT_EQ("mirko", Get(1, "fodor"));
-  db_options_.env = env_;
-  Close();
-}
-#endif  // !ROCKSDB_LITE
-
-#ifndef ROCKSDB_LITE  // WaitForFlush() is not supported
-TEST_F(ColumnFamilyTest, IteratorCloseWALFile1) {
-  SpecialEnv env(Env::Default());
-  db_options_.env = &env;
-  db_options_.max_background_flushes = 1;
-  column_family_options_.memtable_factory.reset(new SpecialSkipListFactory(2));
-  Open();
-  CreateColumnFamilies({"one"});
-  ASSERT_OK(Put(1, "fodor", "mirko"));
-  // Create an iterator holding the current super version.
-  Iterator* it = db_->NewIterator(ReadOptions(), handles_[1]);
-  // A flush will make `it` hold the last reference of its super version.
-  Flush(1);
-
-  ASSERT_OK(Put(1, "fodor", "mirko"));
-  ASSERT_OK(Put(0, "fodor", "mirko"));
-  ASSERT_OK(Put(1, "fodor", "mirko"));
-
-  // Flush jobs will close previous WAL files after finishing. By
-  // block flush jobs from running, we trigger a condition where
-  // the iterator destructor should close the WAL files.
-  test::SleepingBackgroundTask sleeping_task;
-  env_->Schedule(&test::SleepingBackgroundTask::DoSleepTask, &sleeping_task,
-                 Env::Priority::HIGH);
-
-  WriteOptions wo;
-  wo.sync = true;
-  ASSERT_OK(db_->Put(wo, handles_[1], "fodor", "mirko"));
-
-  ASSERT_EQ(2, env.num_open_wal_file_.load());
-  // Deleting the iterator will clear its super version, triggering
-  // closing all files
-  delete it;
-  ASSERT_EQ(1, env.num_open_wal_file_.load());
-
-  sleeping_task.WakeUp();
-  sleeping_task.WaitUntilDone();
-  WaitForFlush(1);
-
-  Reopen();
-  ASSERT_EQ("mirko", Get(0, "fodor"));
-  ASSERT_EQ("mirko", Get(1, "fodor"));
-  db_options_.env = env_;
-  Close();
-}
-
-TEST_F(ColumnFamilyTest, IteratorCloseWALFile2) {
-  SpecialEnv env(Env::Default());
-  // Allow both of flush and purge job to schedule.
-  env.SetBackgroundThreads(2, Env::HIGH);
-  db_options_.env = &env;
-  db_options_.max_background_flushes = 1;
-  column_family_options_.memtable_factory.reset(new SpecialSkipListFactory(2));
-  Open();
-  CreateColumnFamilies({"one"});
-  ASSERT_OK(Put(1, "fodor", "mirko"));
-  // Create an iterator holding the current super version.
-  ReadOptions ro;
-  ro.background_purge_on_iterator_cleanup = true;
-  Iterator* it = db_->NewIterator(ro, handles_[1]);
-  // A flush will make `it` hold the last reference of its super version.
-  Flush(1);
-
-  ASSERT_OK(Put(1, "fodor", "mirko"));
-  ASSERT_OK(Put(0, "fodor", "mirko"));
-  ASSERT_OK(Put(1, "fodor", "mirko"));
-
-  rocksdb::SyncPoint::GetInstance()->LoadDependency({
-      {"ColumnFamilyTest::IteratorCloseWALFile2:0",
-       "DBImpl::BGWorkPurge:start"},
-      {"ColumnFamilyTest::IteratorCloseWALFile2:2",
-       "DBImpl::BackgroundCallFlush:start"},
-      {"DBImpl::BGWorkPurge:end", "ColumnFamilyTest::IteratorCloseWALFile2:1"},
-  });
-  rocksdb::SyncPoint::GetInstance()->EnableProcessing();
-
-  WriteOptions wo;
-  wo.sync = true;
-  ASSERT_OK(db_->Put(wo, handles_[1], "fodor", "mirko"));
-
-  ASSERT_EQ(2, env.num_open_wal_file_.load());
-  // Deleting the iterator will clear its super version, triggering
-  // closing all files
-  delete it;
-  ASSERT_EQ(2, env.num_open_wal_file_.load());
-
-  TEST_SYNC_POINT("ColumnFamilyTest::IteratorCloseWALFile2:0");
-  TEST_SYNC_POINT("ColumnFamilyTest::IteratorCloseWALFile2:1");
-  ASSERT_EQ(1, env.num_open_wal_file_.load());
-  TEST_SYNC_POINT("ColumnFamilyTest::IteratorCloseWALFile2:2");
-  WaitForFlush(1);
-  ASSERT_EQ(1, env.num_open_wal_file_.load());
-  rocksdb::SyncPoint::GetInstance()->DisableProcessing();
-
-  Reopen();
-  ASSERT_EQ("mirko", Get(0, "fodor"));
-  ASSERT_EQ("mirko", Get(1, "fodor"));
-  db_options_.env = env_;
-  Close();
-}
-#endif  // !ROCKSDB_LITE
-
-#ifndef ROCKSDB_LITE  // TEST functions are not supported in lite
-TEST_F(ColumnFamilyTest, ForwardIteratorCloseWALFile) {
-  SpecialEnv env(Env::Default());
-  // Allow both of flush and purge job to schedule.
-  env.SetBackgroundThreads(2, Env::HIGH);
-  db_options_.env = &env;
-  db_options_.max_background_flushes = 1;
-  column_family_options_.memtable_factory.reset(new SpecialSkipListFactory(3));
-  column_family_options_.level0_file_num_compaction_trigger = 2;
-  Open();
-  CreateColumnFamilies({"one"});
-  ASSERT_OK(Put(1, "fodor", "mirko"));
-  ASSERT_OK(Put(1, "fodar2", "mirko"));
-  Flush(1);
-
-  // Create an iterator holding the current super version, as well as
-  // the SST file just flushed.
-  ReadOptions ro;
-  ro.tailing = true;
-  ro.background_purge_on_iterator_cleanup = true;
-  Iterator* it = db_->NewIterator(ro, handles_[1]);
-  // A flush will make `it` hold the last reference of its super version.
-
-  ASSERT_OK(Put(1, "fodor", "mirko"));
-  ASSERT_OK(Put(1, "fodar2", "mirko"));
-  Flush(1);
-
-  WaitForCompaction();
-
-  ASSERT_OK(Put(1, "fodor", "mirko"));
-  ASSERT_OK(Put(1, "fodor", "mirko"));
-  ASSERT_OK(Put(0, "fodor", "mirko"));
-  ASSERT_OK(Put(1, "fodor", "mirko"));
-
-  rocksdb::SyncPoint::GetInstance()->LoadDependency({
-      {"ColumnFamilyTest::IteratorCloseWALFile2:0",
-       "DBImpl::BGWorkPurge:start"},
-      {"ColumnFamilyTest::IteratorCloseWALFile2:2",
-       "DBImpl::BackgroundCallFlush:start"},
-      {"DBImpl::BGWorkPurge:end", "ColumnFamilyTest::IteratorCloseWALFile2:1"},
-  });
-  rocksdb::SyncPoint::GetInstance()->EnableProcessing();
-
-  WriteOptions wo;
-  wo.sync = true;
-  ASSERT_OK(db_->Put(wo, handles_[1], "fodor", "mirko"));
-
-  env.delete_count_.store(0);
-  ASSERT_EQ(2, env.num_open_wal_file_.load());
-  // Deleting the iterator will clear its super version, triggering
-  // closing all files
-  it->Seek("");
-  ASSERT_EQ(2, env.num_open_wal_file_.load());
-  ASSERT_EQ(0, env.delete_count_.load());
-
-  TEST_SYNC_POINT("ColumnFamilyTest::IteratorCloseWALFile2:0");
-  TEST_SYNC_POINT("ColumnFamilyTest::IteratorCloseWALFile2:1");
-  ASSERT_EQ(1, env.num_open_wal_file_.load());
-  ASSERT_EQ(1, env.delete_count_.load());
-  TEST_SYNC_POINT("ColumnFamilyTest::IteratorCloseWALFile2:2");
-  WaitForFlush(1);
-  ASSERT_EQ(1, env.num_open_wal_file_.load());
-  ASSERT_EQ(1, env.delete_count_.load());
-
-  delete it;
-  rocksdb::SyncPoint::GetInstance()->DisableProcessing();
-
-  Reopen();
-  ASSERT_EQ("mirko", Get(0, "fodor"));
-  ASSERT_EQ("mirko", Get(1, "fodor"));
-  db_options_.env = env_;
-  Close();
-}
-#endif  // !ROCKSDB_LITE
-
 // Disable on windows because SyncWAL requires env->IsSyncThreadSafe()
 // to return true which is not so in unbuffered mode.
 #ifndef OS_WIN
@@ -10,7 +10,6 @@
 #include <thread>
 #include <vector>

-#include "db/db_impl.h"
 #include "rocksdb/db.h"
 #include "rocksdb/env.h"
 #include "util/string_util.h"
@@ -50,10 +49,6 @@ class FlushedFileCollector : public EventListener {
    }
    return result;
  }
-  void ClearFlushedFiles() {
-    std::lock_guard<std::mutex> lock(mutex_);
-    flushed_files_.clear();
-  }

 private:
  std::vector<std::string> flushed_files_;
@@ -120,12 +115,13 @@ TEST_F(CompactFilesTest, L0ConflictsFiles) {
 TEST_F(CompactFilesTest, ObsoleteFiles) {
  Options options;
  // to trigger compaction more easily
-  const int kWriteBufferSize = 65536;
+  const int kWriteBufferSize = 10000;
  options.create_if_missing = true;
  // Disable RocksDB background compaction.
  options.compaction_style = kCompactionStyleNone;
-  options.level0_slowdown_writes_trigger = (1 << 30);
-  options.level0_stop_writes_trigger = (1 << 30);
+  // Small slowdown and stop trigger for experimental purpose.
+  options.level0_slowdown_writes_trigger = 20;
+  options.level0_stop_writes_trigger = 20;
  options.write_buffer_size = kWriteBufferSize;
  options.max_write_buffer_number = 2;
  options.compression = kNoCompression;
@@ -148,7 +144,6 @@ TEST_F(CompactFilesTest, ObsoleteFiles) {

  auto l0_files = collector->GetFlushedFiles();
  ASSERT_OK(db->CompactFiles(CompactionOptions(), l0_files, 1));
-  reinterpret_cast<DBImpl*>(db)->TEST_WaitForCompact();

  // verify all compaction input files are deleted
  for (auto fname : l0_files) {
@@ -157,46 +152,6 @@ TEST_F(CompactFilesTest, ObsoleteFiles) {
  delete db;
 }

-TEST_F(CompactFilesTest, NotCutOutputOnLevel0) {
-  Options options;
-  options.create_if_missing = true;
-  // Disable RocksDB background compaction.
-  options.compaction_style = kCompactionStyleNone;
-  options.level0_slowdown_writes_trigger = 1000;
-  options.level0_stop_writes_trigger = 1000;
-  options.write_buffer_size = 65536;
-  options.max_write_buffer_number = 2;
-  options.compression = kNoCompression;
-  options.max_compaction_bytes = 5000;
-
-  // Add listener
-  FlushedFileCollector* collector = new FlushedFileCollector();
-  options.listeners.emplace_back(collector);
-
-  DB* db = nullptr;
-  DestroyDB(db_name_, options);
-  Status s = DB::Open(options, db_name_, &db);
-  assert(s.ok());
-  assert(db);
-
-  // create couple files
-  for (int i = 0; i < 500; ++i) {
-    db->Put(WriteOptions(), ToString(i), std::string(1000, 'a' + (i % 26)));
-  }
-  reinterpret_cast<DBImpl*>(db)->TEST_WaitForFlushMemTable();
-  auto l0_files_1 = collector->GetFlushedFiles();
-  collector->ClearFlushedFiles();
-  for (int i = 0; i < 500; ++i) {
-    db->Put(WriteOptions(), ToString(i), std::string(1000, 'a' + (i % 26)));
-  }
-  reinterpret_cast<DBImpl*>(db)->TEST_WaitForFlushMemTable();
-  auto l0_files_2 = collector->GetFlushedFiles();
-  ASSERT_OK(db->CompactFiles(CompactionOptions(), l0_files_1, 0));
-  ASSERT_OK(db->CompactFiles(CompactionOptions(), l0_files_2, 0));
-  // no assertion failure
-  delete db;
-}
-
 TEST_F(CompactFilesTest, CapturingPendingFiles) {
  Options options;
  options.create_if_missing = true;
@@ -151,9 +151,9 @@ Status CompactedDBImpl::Open(const Options& options,
  std::unique_ptr<CompactedDBImpl> db(new CompactedDBImpl(db_options, dbname));
  Status s = db->Init(options);
  if (s.ok()) {
-    Log(INFO_LEVEL, db->immutable_db_options_.info_log,
+    Log(INFO_LEVEL, db->db_options_.info_log,
        "Opened the db as fully compacted mode");
-    LogFlush(db->immutable_db_options_.info_log);
+    LogFlush(db->db_options_.info_log);
    *dbptr = db.release();
  }
  return s;
@@ -140,12 +140,11 @@ bool Compaction::IsFullCompaction(
 }

 Compaction::Compaction(VersionStorageInfo* vstorage,
-                       const ImmutableCFOptions& _immutable_cf_options,
                       const MutableCFOptions& _mutable_cf_options,
                       std::vector<CompactionInputFiles> _inputs,
                       int _output_level, uint64_t _target_file_size,
-                       uint64_t _max_compaction_bytes, uint32_t _output_path_id,
-                       CompressionType _compression,
+                       uint64_t _max_grandparent_overlap_bytes,
+                       uint32_t _output_path_id, CompressionType _compression,
                       std::vector<FileMetaData*> _grandparents,
                       bool _manual_compaction, double _score,
                       bool _deletion_compaction,
@@ -153,8 +152,7 @@ Compaction::Compaction(VersionStorageInfo* vstorage,
    : start_level_(_inputs[0].level),
      output_level_(_output_level),
      max_output_file_size_(_target_file_size),
-      max_compaction_bytes_(_max_compaction_bytes),
-      immutable_cf_options_(_immutable_cf_options),
+      max_grandparent_overlap_bytes_(_max_grandparent_overlap_bytes),
      mutable_cf_options_(_mutable_cf_options),
      input_version_(nullptr),
      number_levels_(vstorage->num_levels()),
@@ -249,7 +247,7 @@ bool Compaction::IsTrivialMove() const {
  return (start_level_ != output_level_ && num_input_levels() == 1 &&
          input(0, 0)->fd.GetPathId() == output_path_id() &&
          InputCompressionMatchesOutput() &&
-          TotalFileSize(grandparents_) <= max_compaction_bytes_);
+          TotalFileSize(grandparents_) <= max_grandparent_overlap_bytes_);
 }

 void Compaction::AddInputDeletions(VersionEdit* out_edit) {
@@ -429,7 +427,7 @@ bool Compaction::IsOutputLevelEmpty() const {
 }

 bool Compaction::ShouldFormSubcompactions() const {
-  if (immutable_cf_options_.max_subcompactions <= 1 || cfd_ == nullptr) {
+  if (mutable_cf_options_.max_subcompactions <= 1 || cfd_ == nullptr) {
    return false;
  }
  if (cfd_->ioptions()->compaction_style == kCompactionStyleLevel) {
@@ -8,10 +8,10 @@
 // found in the LICENSE file. See the AUTHORS file for names of contributors.

 #pragma once
-#include "db/version_set.h"
 #include "util/arena.h"
 #include "util/autovector.h"
-#include "util/cf_options.h"
+#include "util/mutable_cf_options.h"
+#include "db/version_set.h"

 namespace rocksdb {

@@ -35,10 +35,9 @@ class CompactionFilter;
 class Compaction {
 public:
  Compaction(VersionStorageInfo* input_version,
-             const ImmutableCFOptions& immutable_cf_options,
             const MutableCFOptions& mutable_cf_options,
             std::vector<CompactionInputFiles> inputs, int output_level,
-             uint64_t target_file_size, uint64_t max_compaction_bytes,
+             uint64_t target_file_size, uint64_t max_grandparent_overlap_bytes,
             uint32_t output_path_id, CompressionType compression,
             std::vector<FileMetaData*> grandparents,
             bool manual_compaction = false, double score = -1,
@@ -104,8 +103,6 @@ class Compaction {
    return &inputs_[compaction_input_level].files;
  }

-  const std::vector<CompactionInputFiles>* inputs() { return &inputs_; }
-
  // Returns the LevelFilesBrief of the specified compaction input level.
  const LevelFilesBrief* input_levels(size_t compaction_input_level) const {
    return &input_levels_[compaction_input_level];
@@ -174,12 +171,6 @@ class Compaction {
  // How many total levels are there?
  int number_levels() const { return number_levels_; }

-  // Return the ImmutableCFOptions that should be used throughout the compaction
-  // procedure
-  const ImmutableCFOptions* immutable_cf_options() const {
-    return &immutable_cf_options_;
-  }
-
  // Return the MutableCFOptions that should be used throughout the compaction
  // procedure
  const MutableCFOptions* mutable_cf_options() const {
@@ -238,7 +229,9 @@ class Compaction {
    return grandparents_;
  }

-  uint64_t max_compaction_bytes() const { return max_compaction_bytes_; }
+  uint64_t max_grandparent_overlap_bytes() const {
+    return max_grandparent_overlap_bytes_;
+  }

 private:
  // mark (or clear) all files that are being compacted
@@ -261,9 +254,8 @@ class Compaction {
  const int start_level_;    // the lowest level to be compacted
  const int output_level_;  // levels to which output files are stored
  uint64_t max_output_file_size_;
-  uint64_t max_compaction_bytes_;
-  const ImmutableCFOptions immutable_cf_options_;
-  const MutableCFOptions mutable_cf_options_;
+  uint64_t max_grandparent_overlap_bytes_;
+  MutableCFOptions mutable_cf_options_;
  Version* input_version_;
  VersionEdit edit_;
  const int number_levels_;
@@ -14,9 +14,8 @@ CompactionIterator::CompactionIterator(
    InternalIterator* input, const Comparator* cmp, MergeHelper* merge_helper,
    SequenceNumber last_sequence, std::vector<SequenceNumber>* snapshots,
    SequenceNumber earliest_write_conflict_snapshot, Env* env,
-    bool expect_valid_internal_key, RangeDelAggregator* range_del_agg,
-    const Compaction* compaction, const CompactionFilter* compaction_filter,
-    LogBuffer* log_buffer)
+    bool expect_valid_internal_key, const Compaction* compaction,
+    const CompactionFilter* compaction_filter, LogBuffer* log_buffer)
    : input_(input),
      cmp_(cmp),
      merge_helper_(merge_helper),
@@ -24,7 +23,6 @@ CompactionIterator::CompactionIterator(
      earliest_write_conflict_snapshot_(earliest_write_conflict_snapshot),
      env_(env),
      expect_valid_internal_key_(expect_valid_internal_key),
-      range_del_agg_(range_del_agg),
      compaction_(compaction),
      compaction_filter_(compaction_filter),
      log_buffer_(log_buffer),
@@ -38,11 +36,11 @@ CompactionIterator::CompactionIterator(

  if (snapshots_->size() == 0) {
    // optimize for fast path if there are no snapshots
-    visible_at_tip_ = true;
-    earliest_snapshot_ = last_sequence;
+    visible_at_tip_ = last_sequence;
+    earliest_snapshot_ = visible_at_tip_;
    latest_snapshot_ = 0;
  } else {
-    visible_at_tip_ = false;
+    visible_at_tip_ = 0;
    earliest_snapshot_ = snapshots_->at(0);
    latest_snapshot_ = snapshots_->back();
  }
@@ -51,12 +49,6 @@ CompactionIterator::CompactionIterator(
  } else {
    ignore_snapshots_ = false;
  }
-  input_->SetPinnedItersMgr(&pinned_iters_mgr_);
-}
-
-CompactionIterator::~CompactionIterator() {
-  // input_ Iteartor lifetime is longer than pinned_iters_mgr_ lifetime
-  input_->SetPinnedItersMgr(nullptr);
 }

 void CompactionIterator::ResetRecordCounts() {
@@ -91,8 +83,6 @@ void CompactionIterator::Next() {
      ikey_.user_key = current_key_.GetUserKey();
      valid_ = true;
    } else {
-      // We consumed all pinned merge operands, release pinned iterators
-      pinned_iters_mgr_.ReleasePinnedData();
      // MergeHelper moves the iterator to the first record after the merged
      // records, so even though we reached the end of the merge output, we do
      // not want to advance the iterator.
@@ -155,7 +145,6 @@ void CompactionIterator::NextFromInput() {
    if (!has_current_user_key_ ||
        !cmp_->Equal(ikey_.user_key, current_user_key_)) {
      // First occurrence of this user key
-      // Copy key for output
      key_ = current_key_.SetKey(key_, &ikey_);
      current_user_key_ = ikey_.user_key;
      has_current_user_key_ = true;
@@ -213,9 +202,8 @@ void CompactionIterator::NextFromInput() {
    SequenceNumber last_snapshot = current_user_key_snapshot_;
    SequenceNumber prev_snapshot = 0;  // 0 means no previous snapshot
    current_user_key_snapshot_ =
-        visible_at_tip_
-            ? earliest_snapshot_
-            : findEarliestVisibleSnapshot(ikey_.sequence, &prev_snapshot);
+        visible_at_tip_ ? visible_at_tip_ : findEarliestVisibleSnapshot(
+                                                ikey_.sequence, &prev_snapshot);

    if (clear_and_output_next_key_) {
      // In the previous iteration we encountered a single delete that we could
@@ -258,7 +246,6 @@ void CompactionIterator::NextFromInput() {
      // those operations for a given key is documented as being undefined.  So
      // we can choose how to handle such a combinations of operations.  We will
      // try to compact out as much as we can in these cases.
-      // We will report counts on these anomalous cases.

      // The easiest way to process a SingleDelete during iteration is to peek
      // ahead at the next key.
@@ -281,7 +268,6 @@ void CompactionIterator::NextFromInput() {
            // First SingleDelete has been skipped since we already called
            // input_->Next().
            ++iter_stats_.num_record_drop_obsolete;
-            ++iter_stats_.num_single_del_mismatch;
          } else if ((ikey_.sequence <= earliest_write_conflict_snapshot_) ||
                     has_outputted_key_) {
            // Found a matching value, we can drop the single delete and the
@@ -291,12 +277,7 @@ void CompactionIterator::NextFromInput() {

            // Note: it doesn't matter whether the second key is a Put or if it
            // is an unexpected Merge or Delete.  We will compact it out
-            // either way. We will maintain counts of how many mismatches
-            // happened
-            if (next_ikey.type != kTypeValue) {
-              ++iter_stats_.num_single_del_mismatch;
-            }
-
+            // either way.
            ++iter_stats_.num_record_drop_hidden;
            ++iter_stats_.num_record_drop_obsolete;
            // Already called input_->Next() once.  Call it a second time to
@@ -324,7 +305,7 @@ void CompactionIterator::NextFromInput() {
        }
      } else {
        // We are at the end of the input, could not parse the next key, or hit
-        // a different key. The iterator returns the single delete if the key
+        // the next key. The iterator returns the single delete if the key
        // possibly exists beyond the current output level.  We set
        // has_current_user_key to false so that if the iterator is at the next
        // key, we do not compare it again against the previous key at the next
@@ -337,7 +318,6 @@ void CompactionIterator::NextFromInput() {
          // Key doesn't exist outside of this range.
          // Can compact out this SingleDelete.
          ++iter_stats_.num_record_drop_obsolete;
-          ++iter_stats_.num_single_del_fallthru;
        } else {
          // Output SingleDelete
          valid_ = true;
@@ -388,13 +368,11 @@ void CompactionIterator::NextFromInput() {
        return;
      }

-      pinned_iters_mgr_.StartPinning();
      // We know the merge type entry is not hidden, otherwise we would
      // have hit (A)
      // We encapsulate the merge related state machine in a different
      // object to minimize change to the existing flow.
-      merge_helper_->MergeUntil(input_, range_del_agg_, prev_snapshot,
-                                bottommost_level_);
+      merge_helper_->MergeUntil(input_, prev_snapshot, bottommost_level_);
      merge_out_iter_.SeekToFirst();

      if (merge_out_iter_.Valid()) {
@@ -417,18 +395,9 @@ void CompactionIterator::NextFromInput() {
        // batch consumed by the merge operator should not shadow any keys
        // coming after the merges
        has_current_user_key_ = false;
-        pinned_iters_mgr_.ReleasePinnedData();
      }
    } else {
-      // 1. new user key -OR-
-      // 2. different snapshot stripe
-      bool should_delete =
-          range_del_agg_->ShouldDelete(key_, true /* for_compaction */);
-      if (should_delete) {
-        input_->Next();
-      } else {
-        valid_ = true;
-      }
+      valid_ = true;
    }
  }
 }
@@ -13,8 +13,6 @@

 #include "db/compaction.h"
 #include "db/merge_helper.h"
-#include "db/pinned_iterators_manager.h"
-#include "db/range_del_aggregator.h"
 #include "rocksdb/compaction_filter.h"
 #include "util/log_buffer.h"

@@ -35,10 +33,6 @@ struct CompactionIteratorStats {
  uint64_t num_input_corrupt_records = 0;
  uint64_t total_input_raw_key_bytes = 0;
  uint64_t total_input_raw_value_bytes = 0;
-
-  // Single-Delete diagnostics for exceptional situations
-  uint64_t num_single_del_fallthru = 0;
-  uint64_t num_single_del_mismatch = 0;
 };

 class CompactionIterator {
@@ -48,13 +42,10 @@ class CompactionIterator {
                     std::vector<SequenceNumber>* snapshots,
                     SequenceNumber earliest_write_conflict_snapshot, Env* env,
                     bool expect_valid_internal_key,
-                     RangeDelAggregator* range_del_agg,
                     const Compaction* compaction = nullptr,
                     const CompactionFilter* compaction_filter = nullptr,
                     LogBuffer* log_buffer = nullptr);

-  ~CompactionIterator();
-
  void ResetRecordCounts();

  // Seek to the beginning of the compaction iterator output.
@@ -101,13 +92,12 @@ class CompactionIterator {
  const SequenceNumber earliest_write_conflict_snapshot_;
  Env* env_;
  bool expect_valid_internal_key_;
-  RangeDelAggregator* range_del_agg_;
  const Compaction* compaction_;
  const CompactionFilter* compaction_filter_;
  LogBuffer* log_buffer_;
  bool bottommost_level_;
  bool valid_ = false;
-  bool visible_at_tip_;
+  SequenceNumber visible_at_tip_;
  SequenceNumber earliest_snapshot_;
  SequenceNumber latest_snapshot_;
  bool ignore_snapshots_;
@@ -146,9 +136,6 @@ class CompactionIterator {
  bool clear_and_output_next_key_ = false;

  MergeOutputIterator merge_out_iter_;
-  // PinnedIteratorsManager used to pin input_ Iterator blocks while reading
-  // merge operands and then releasing them after consuming them.
-  PinnedIteratorsManager pinned_iters_mgr_;
  std::string compaction_filter_value_;
  // "level_ptrs" holds indices that remember which file of an associated
  // level we were last checking during the last call to compaction->
@@ -4,10 +4,6 @@
 //  of patent rights can be found in the PATENTS file in the same directory.

 #include "db/compaction_iterator.h"
-
-#include <string>
-#include <vector>
-
 #include "util/testharness.h"
 #include "util/testutil.h"

@@ -15,45 +11,33 @@ namespace rocksdb {

 class CompactionIteratorTest : public testing::Test {
 public:
-  CompactionIteratorTest()
-      : cmp_(BytewiseComparator()), icmp_(cmp_), snapshots_({}) {}
-
-  void InitIterators(const std::vector<std::string>& ks,
-                     const std::vector<std::string>& vs,
-                     const std::vector<std::string>& range_del_ks,
-                     const std::vector<std::string>& range_del_vs,
-                     SequenceNumber last_sequence) {
-    std::unique_ptr<InternalIterator> range_del_iter(
-        new test::VectorIterator(range_del_ks, range_del_vs));
-    range_del_agg_.reset(new RangeDelAggregator(icmp_, snapshots_));
-    ASSERT_OK(range_del_agg_->AddTombstones(std::move(range_del_iter)));
+  CompactionIteratorTest() : cmp_(BytewiseComparator()), snapshots_({}) {}

+  void InitIterator(const std::vector<std::string>& ks,
+                    const std::vector<std::string>& vs,
+                    SequenceNumber last_sequence) {
    merge_helper_.reset(new MergeHelper(Env::Default(), cmp_, nullptr, nullptr,
                                        nullptr, 0U, false, 0));
    iter_.reset(new test::VectorIterator(ks, vs));
    iter_->SeekToFirst();
    c_iter_.reset(new CompactionIterator(
        iter_.get(), cmp_, merge_helper_.get(), last_sequence, &snapshots_,
-        kMaxSequenceNumber, Env::Default(), false, range_del_agg_.get()));
+        kMaxSequenceNumber, Env::Default(), false));
  }

-  void AddSnapshot(SequenceNumber snapshot) { snapshots_.push_back(snapshot); }
-
  const Comparator* cmp_;
-  const InternalKeyComparator icmp_;
  std::vector<SequenceNumber> snapshots_;
  std::unique_ptr<MergeHelper> merge_helper_;
  std::unique_ptr<test::VectorIterator> iter_;
  std::unique_ptr<CompactionIterator> c_iter_;
-  std::unique_ptr<RangeDelAggregator> range_del_agg_;
 };

 // It is possible that the output of the compaction iterator is empty even if
 // the input is not.
 TEST_F(CompactionIteratorTest, EmptyResult) {
-  InitIterators({test::KeyStr("a", 5, kTypeSingleDeletion),
-                 test::KeyStr("a", 3, kTypeValue)},
-                {"", "val"}, {}, {}, 5);
+  InitIterator({test::KeyStr("a", 5, kTypeSingleDeletion),
+                test::KeyStr("a", 3, kTypeValue)},
+               {"", "val"}, 5);
  c_iter_->SeekToFirst();
  ASSERT_FALSE(c_iter_->Valid());
 }
@@ -61,10 +45,10 @@ TEST_F(CompactionIteratorTest, EmptyResult) {
 // If there is a corruption after a single deletion, the corrupted key should
 // be preserved.
 TEST_F(CompactionIteratorTest, CorruptionAfterSingleDeletion) {
-  InitIterators({test::KeyStr("a", 5, kTypeSingleDeletion),
-                 test::KeyStr("a", 3, kTypeValue, true),
-                 test::KeyStr("b", 10, kTypeValue)},
-                {"", "val", "val2"}, {}, {}, 10);
+  InitIterator({test::KeyStr("a", 5, kTypeSingleDeletion),
+                test::KeyStr("a", 3, kTypeValue, true),
+                test::KeyStr("b", 10, kTypeValue)},
+               {"", "val", "val2"}, 10);
  c_iter_->SeekToFirst();
  ASSERT_TRUE(c_iter_->Valid());
  ASSERT_EQ(test::KeyStr("a", 5, kTypeSingleDeletion),
@@ -79,43 +63,6 @@ TEST_F(CompactionIteratorTest, CorruptionAfterSingleDeletion) {
  ASSERT_FALSE(c_iter_->Valid());
 }

-TEST_F(CompactionIteratorTest, SimpleRangeDeletion) {
-  InitIterators({test::KeyStr("morning", 5, kTypeValue),
-                 test::KeyStr("morning", 2, kTypeValue),
-                 test::KeyStr("night", 3, kTypeValue)},
-                {"zao", "zao", "wan"},
-                {test::KeyStr("ma", 4, kTypeRangeDeletion)}, {"mz"}, 5);
-  c_iter_->SeekToFirst();
-  ASSERT_TRUE(c_iter_->Valid());
-  ASSERT_EQ(test::KeyStr("morning", 5, kTypeValue), c_iter_->key().ToString());
-  c_iter_->Next();
-  ASSERT_TRUE(c_iter_->Valid());
-  ASSERT_EQ(test::KeyStr("night", 3, kTypeValue), c_iter_->key().ToString());
-  c_iter_->Next();
-  ASSERT_FALSE(c_iter_->Valid());
-}
-
-TEST_F(CompactionIteratorTest, RangeDeletionWithSnapshots) {
-  AddSnapshot(10);
-  std::vector<std::string> ks1;
-  ks1.push_back(test::KeyStr("ma", 28, kTypeRangeDeletion));
-  std::vector<std::string> vs1{"mz"};
-  std::vector<std::string> ks2{test::KeyStr("morning", 15, kTypeValue),
-                               test::KeyStr("morning", 5, kTypeValue),
-                               test::KeyStr("night", 40, kTypeValue),
-                               test::KeyStr("night", 20, kTypeValue)};
-  std::vector<std::string> vs2{"zao 15", "zao 5", "wan 40", "wan 20"};
-  InitIterators(ks2, vs2, ks1, vs1, 40);
-  c_iter_->SeekToFirst();
-  ASSERT_TRUE(c_iter_->Valid());
-  ASSERT_EQ(test::KeyStr("morning", 5, kTypeValue), c_iter_->key().ToString());
-  c_iter_->Next();
-  ASSERT_TRUE(c_iter_->Valid());
-  ASSERT_EQ(test::KeyStr("night", 40, kTypeValue), c_iter_->key().ToString());
-  c_iter_->Next();
-  ASSERT_FALSE(c_iter_->Valid());
-}
-
 }  // namespace rocksdb

 int main(int argc, char** argv) {
@@ -99,8 +99,6 @@ struct CompactionJob::SubcompactionState {
    }
  }

-  uint64_t current_output_file_size;
-
  // State during the subcompaction
  uint64_t total_bytes;
  uint64_t num_input_records;
@@ -123,7 +121,6 @@ struct CompactionJob::SubcompactionState {
        end(_end),
        outfile(nullptr),
        builder(nullptr),
-        current_output_file_size(0),
        total_bytes(0),
        num_input_records(0),
        num_output_records(0),
@@ -145,7 +142,6 @@ struct CompactionJob::SubcompactionState {
    outputs = std::move(o.outputs);
    outfile = std::move(o.outfile);
    builder = std::move(o.builder);
-    current_output_file_size = std::move(o.current_output_file_size);
    total_bytes = std::move(o.total_bytes);
    num_input_records = std::move(o.num_input_records);
    num_output_records = std::move(o.num_output_records);
@@ -165,7 +161,7 @@ struct CompactionJob::SubcompactionState {

  // Returns true iff we should stop building the current output
  // before processing "internal_key".
-  bool ShouldStopBefore(const Slice& internal_key, uint64_t curr_file_size) {
+  bool ShouldStopBefore(const Slice& internal_key) {
    const InternalKeyComparator* icmp =
        &compaction->column_family_data()->internal_comparator();
    const std::vector<FileMetaData*>& grandparents = compaction->grandparents();
@@ -186,8 +182,7 @@ struct CompactionJob::SubcompactionState {
    }
    seen_key = true;

-    if (overlapped_bytes + curr_file_size >
-        compaction->max_compaction_bytes()) {
+    if (overlapped_bytes > compaction->max_grandparent_overlap_bytes()) {
      // Too much overlap for current output; start new output
      overlapped_bytes = 0;
      return true;
@@ -262,7 +257,7 @@ void CompactionJob::AggregateStatistics() {
 }

 CompactionJob::CompactionJob(
-    int job_id, Compaction* compaction, const ImmutableDBOptions& db_options,
+    int job_id, Compaction* compaction, const DBOptions& db_options,
    const EnvOptions& env_options, VersionSet* versions,
    std::atomic<bool>* shutting_down, LogBuffer* log_buffer,
    Directory* db_directory, Directory* output_directory, Statistics* stats,
@@ -297,7 +292,7 @@ CompactionJob::CompactionJob(
  assert(log_buffer_ != nullptr);
  const auto* cfd = compact_->compaction->column_family_data();
  ThreadStatusUtil::SetColumnFamily(cfd, cfd->ioptions()->env,
-                                    db_options_.enable_thread_tracking);
+                                    cfd->options()->enable_thread_tracking);
  ThreadStatusUtil::SetThreadOperation(ThreadStatus::OP_COMPACTION);
  ReportStartedCompaction(compaction);
 }
@@ -311,7 +306,7 @@ void CompactionJob::ReportStartedCompaction(
    Compaction* compaction) {
  const auto* cfd = compact_->compaction->column_family_data();
  ThreadStatusUtil::SetColumnFamily(cfd, cfd->ioptions()->env,
-                                    db_options_.enable_thread_tracking);
+                                    cfd->options()->enable_thread_tracking);

  ThreadStatusUtil::SetThreadOperationProperty(
      ThreadStatus::COMPACTION_JOB_ID,
@@ -484,8 +479,9 @@ void CompactionJob::GenSubcompactionBoundaries() {
                static_cast<uint64_t>(db_options_.max_subcompactions),
                max_output_files});

+  double mean = sum * 1.0 / subcompactions;
+
  if (subcompactions > 1) {
-    double mean = sum * 1.0 / subcompactions;
    // Greedily add ranges to the subcompaction until the sum of the ranges'
    // sizes becomes >= the expected mean size of a subcompaction
    sum = 0;
@@ -538,7 +534,7 @@ Status CompactionJob::Run() {
    thread.join();
  }

-  if (output_directory_ && !db_options_.disable_data_sync) {
+  if (output_directory_ && !db_options_.disableDataSync) {
    output_directory_->Fsync();
  }

@@ -590,16 +586,6 @@ Status CompactionJob::Install(const MutableCFOptions& mutable_cf_options) {
  VersionStorageInfo::LevelSummaryStorage tmp;
  auto vstorage = cfd->current()->storage_info();
  const auto& stats = compaction_stats_;
-
-  double read_write_amp = 0.0;
-  double write_amp = 0.0;
-  if (stats.bytes_read_non_output_levels > 0) {
-    read_write_amp = (stats.bytes_written + stats.bytes_read_output_level +
-                      stats.bytes_read_non_output_levels) /
-                     static_cast<double>(stats.bytes_read_non_output_levels);
-    write_amp = stats.bytes_written /
-                static_cast<double>(stats.bytes_read_non_output_levels);
-  }
  LogToBuffer(
      log_buffer_,
      "[%s] compacted to: %s, MB/sec: %.1f rd, %.1f wr, level %d, "
@@ -612,10 +598,16 @@ Status CompactionJob::Install(const MutableCFOptions& mutable_cf_options) {
      stats.bytes_written / static_cast<double>(stats.micros),
      compact_->compaction->output_level(),
      stats.num_input_files_in_non_output_levels,
-      stats.num_input_files_in_output_level, stats.num_output_files,
+      stats.num_input_files_in_output_level,
+      stats.num_output_files,
      stats.bytes_read_non_output_levels / 1048576.0,
      stats.bytes_read_output_level / 1048576.0,
-      stats.bytes_written / 1048576.0, read_write_amp, write_amp,
+      stats.bytes_written / 1048576.0,
+      (stats.bytes_written + stats.bytes_read_output_level +
+       stats.bytes_read_non_output_levels) /
+          static_cast<double>(stats.bytes_read_non_output_levels),
+      stats.bytes_written /
+          static_cast<double>(stats.bytes_read_non_output_levels),
      status.ToString().c_str(), stats.num_input_records,
      stats.num_dropped_records);

@@ -632,13 +624,6 @@ Status CompactionJob::Install(const MutableCFOptions& mutable_cf_options) {
         << "num_output_records" << compact_->num_output_records
         << "num_subcompactions" << compact_->sub_compact_states.size();

-  if (compaction_job_stats_ != nullptr) {
-    stream << "num_single_delete_mismatches"
-           << compaction_job_stats_->num_single_del_mismatch;
-    stream << "num_single_delete_fallthrough"
-           << compaction_job_stats_->num_single_del_fallthru;
-  }
-
  if (measure_io_stats_ && compaction_job_stats_ != nullptr) {
    stream << "file_write_nanos" << compaction_job_stats_->file_write_nanos;
    stream << "file_range_sync_nanos"
@@ -661,11 +646,8 @@ Status CompactionJob::Install(const MutableCFOptions& mutable_cf_options) {

 void CompactionJob::ProcessKeyValueCompaction(SubcompactionState* sub_compact) {
  assert(sub_compact != nullptr);
-  ColumnFamilyData* cfd = sub_compact->compaction->column_family_data();
-  std::unique_ptr<RangeDelAggregator> range_del_agg(
-      new RangeDelAggregator(cfd->internal_comparator(), existing_snapshots_));
-  std::unique_ptr<InternalIterator> input(versions_->MakeInputIterator(
-      sub_compact->compaction, range_del_agg.get()));
+  std::unique_ptr<InternalIterator> input(
+      versions_->MakeInputIterator(sub_compact->compaction));

  AutoThreadOperationStageUpdater stage_updater(
      ThreadStatus::STAGE_COMPACTION_PROCESS_KV);
@@ -686,6 +668,7 @@ void CompactionJob::ProcessKeyValueCompaction(SubcompactionState* sub_compact) {
    prev_prepare_write_nanos = IOSTATS(prepare_write_nanos);
  }

+  ColumnFamilyData* cfd = sub_compact->compaction->column_family_data();
  const MutableCFOptions* mutable_cf_options =
      sub_compact->compaction->mutable_cf_options();

@@ -742,7 +725,7 @@ void CompactionJob::ProcessKeyValueCompaction(SubcompactionState* sub_compact) {
  sub_compact->c_iter.reset(new CompactionIterator(
      input.get(), cfd->user_comparator(), &merge, versions_->LastSequence(),
      &existing_snapshots_, earliest_write_conflict_snapshot_, env_, false,
-      range_del_agg.get(), sub_compact->compaction, compaction_filter));
+      sub_compact->compaction, compaction_filter));
  auto c_iter = sub_compact->c_iter.get();
  c_iter->SeekToFirst();
  const auto& c_iter_stats = c_iter->iter_stats();
@@ -767,12 +750,9 @@ void CompactionJob::ProcessKeyValueCompaction(SubcompactionState* sub_compact) {
    if (end != nullptr &&
        cfd->user_comparator()->Compare(c_iter->user_key(), *end) >= 0) {
      break;
-    } else if (sub_compact->compaction->output_level() != 0 &&
-               sub_compact->ShouldStopBefore(
-                   key, sub_compact->current_output_file_size) &&
+    } else if (sub_compact->ShouldStopBefore(key) &&
               sub_compact->builder != nullptr) {
-      status = FinishCompactionOutputFile(input->status(), sub_compact,
-                                          range_del_agg.get());
+      status = FinishCompactionOutputFile(input->status(), sub_compact);
      if (!status.ok()) {
        break;
      }
@@ -795,7 +775,6 @@ void CompactionJob::ProcessKeyValueCompaction(SubcompactionState* sub_compact) {
    assert(sub_compact->builder != nullptr);
    assert(sub_compact->current_output() != nullptr);
    sub_compact->builder->Add(key, value);
-    sub_compact->current_output_file_size = sub_compact->builder->FileSize();
    sub_compact->current_output()->meta.UpdateBoundaries(
        key, c_iter->ikey().sequence);
    sub_compact->num_output_records++;
@@ -854,26 +833,16 @@ void CompactionJob::ProcessKeyValueCompaction(SubcompactionState* sub_compact) {
    // during subcompactions (i.e. if output size, estimated by input size, is
    // going to be 1.2MB and max_output_file_size = 1MB, prefer to have 0.6MB
    // and 0.6MB instead of 1MB and 0.2MB)
-    if (sub_compact->compaction->output_level() != 0 &&
-        sub_compact->current_output_file_size >=
-            sub_compact->compaction->max_output_file_size()) {
-      Status input_status = input->status();
-      c_iter->Next();
-
-      const Slice* next_key = nullptr;
-      if (c_iter->Valid()) {
-        next_key = &c_iter->key();
-      }
-      status = FinishCompactionOutputFile(input_status, sub_compact,
-                                          range_del_agg.get(), next_key);
+    if (sub_compact->builder->FileSize() >=
+        sub_compact->compaction->max_output_file_size()) {
+      status = FinishCompactionOutputFile(input->status(), sub_compact);
      if (sub_compact->outputs.size() == 1) {
        // Use dictionary from first output file for compression of subsequent
        // files.
        sub_compact->compression_dict = std::move(compression_dict);
      }
-    } else {
-      c_iter->Next();
    }
+    c_iter->Next();
  }

  sub_compact->num_input_records = c_iter_stats.num_input_records;
@@ -881,10 +850,6 @@ void CompactionJob::ProcessKeyValueCompaction(SubcompactionState* sub_compact) {
      c_iter_stats.num_input_deletion_records;
  sub_compact->compaction_job_stats.num_corrupt_keys =
      c_iter_stats.num_input_corrupt_records;
-  sub_compact->compaction_job_stats.num_single_del_fallthru =
-      c_iter_stats.num_single_del_fallthru;
-  sub_compact->compaction_job_stats.num_single_del_mismatch =
-      c_iter_stats.num_single_del_mismatch;
  sub_compact->compaction_job_stats.total_input_raw_key_bytes +=
      c_iter_stats.total_input_raw_key_bytes;
  sub_compact->compaction_job_stats.total_input_raw_value_bytes +=
@@ -900,13 +865,8 @@ void CompactionJob::ProcessKeyValueCompaction(SubcompactionState* sub_compact) {
    status = Status::ShutdownInProgress(
        "Database shutdown or Column family drop during compaction");
  }
-  if (status.ok() && sub_compact->builder == nullptr &&
-      range_del_agg->ShouldAddTombstones(bottommost_level_)) {
-    status = OpenCompactionOutputFile(sub_compact);
-  }
  if (status.ok() && sub_compact->builder != nullptr) {
-    status = FinishCompactionOutputFile(input->status(), sub_compact,
-                                        range_del_agg.get());
+    status = FinishCompactionOutputFile(input->status(), sub_compact);
  }
  if (status.ok()) {
    status = input->status();
@@ -957,9 +917,7 @@ void CompactionJob::RecordDroppedKeys(
 }

 Status CompactionJob::FinishCompactionOutputFile(
-    const Status& input_status, SubcompactionState* sub_compact,
-    RangeDelAggregator* range_del_agg,
-    const Slice* next_table_min_key /* = nullptr */) {
+    const Status& input_status, SubcompactionState* sub_compact) {
  AutoThreadOperationStageUpdater stage_updater(
      ThreadStatus::STAGE_COMPACTION_SYNC_FILE);
  assert(sub_compact != nullptr);
@@ -974,16 +932,6 @@ Status CompactionJob::FinishCompactionOutputFile(
  // Check for iterator errors
  Status s = input_status;
  auto meta = &sub_compact->current_output()->meta;
-  if (s.ok()) {
-    // For the first output table, include range tombstones before the min key
-    // boundary. For subsequent output tables, this is unnecessary because we
-    // extend each file's max key boundary up until the next file's min key when
-    // range tombstones fall in the gap.
-    range_del_agg->AddToBuilder(
-        sub_compact->builder.get(),
-        sub_compact->outputs.size() == 1 /* extend_before_min_key */,
-        next_table_min_key, meta, bottommost_level_);
-  }
  const uint64_t current_entries = sub_compact->builder->NumEntries();
  meta->marked_for_compaction = sub_compact->builder->NeedCompact();
  if (s.ok()) {
@@ -997,7 +945,7 @@ Status CompactionJob::FinishCompactionOutputFile(
  sub_compact->total_bytes += current_bytes;

  // Finish and check for file errors
-  if (s.ok() && !db_options_.disable_data_sync) {
+  if (s.ok() && !db_options_.disableDataSync) {
    StopWatch sw(env_, stats_, COMPACTION_OUTFILE_SYNC_MICROS);
    s = sub_compact->outfile->Sync(db_options_.use_fsync);
  }
@@ -1062,7 +1010,6 @@ Status CompactionJob::FinishCompactionOutputFile(
  }

  sub_compact->builder.reset();
-  sub_compact->current_output_file_size = 0;
  return s;
 }

@@ -1170,9 +1117,7 @@ Status CompactionJob::OpenCompactionOutputFile(
      *cfd->ioptions(), cfd->internal_comparator(),
      cfd->int_tbl_prop_collector_factories(), cfd->GetID(), cfd->GetName(),
      sub_compact->outfile.get(), sub_compact->compaction->output_compression(),
-      cfd->ioptions()->compression_opts,
-      sub_compact->compaction->output_level(),
-      &sub_compact->compression_dict,
+      cfd->ioptions()->compression_opts, &sub_compact->compression_dict,
      skip_filters));
  LogFlush(db_options_.info_log);
  return s;
@@ -25,7 +25,6 @@
 #include "db/job_context.h"
 #include "db/log_writer.h"
 #include "db/memtable_list.h"
-#include "db/range_del_aggregator.h"
 #include "db/version_edit.h"
 #include "db/write_controller.h"
 #include "db/write_thread.h"
@@ -38,7 +37,6 @@
 #include "rocksdb/transaction_log.h"
 #include "table/scoped_arena_iterator.h"
 #include "util/autovector.h"
-#include "util/db_options.h"
 #include "util/event_logger.h"
 #include "util/stop_watch.h"
 #include "util/thread_local.h"
@@ -54,8 +52,7 @@ class Arena;

 class CompactionJob {
 public:
-  CompactionJob(int job_id, Compaction* compaction,
-                const ImmutableDBOptions& db_options,
+  CompactionJob(int job_id, Compaction* compaction, const DBOptions& db_options,
                const EnvOptions& env_options, VersionSet* versions,
                std::atomic<bool>* shutting_down, LogBuffer* log_buffer,
                Directory* db_directory, Directory* output_directory,
@@ -97,9 +94,7 @@ class CompactionJob {
  void ProcessKeyValueCompaction(SubcompactionState* sub_compact);

  Status FinishCompactionOutputFile(const Status& input_status,
-                                    SubcompactionState* sub_compact,
-                                    RangeDelAggregator* range_del_agg = nullptr,
-                                    const Slice* next_table_min_key = nullptr);
+                                    SubcompactionState* sub_compact);
  Status InstallCompactionResults(const MutableCFOptions& mutable_cf_options);
  void RecordCompactionIOStats();
  Status OpenCompactionOutputFile(SubcompactionState* sub_compact);
@@ -125,7 +120,7 @@ class CompactionJob {

  // DBImpl state
  const std::string& dbname_;
-  const ImmutableDBOptions& db_options_;
+  const DBOptions& db_options_;
  const EnvOptions& env_options_;

  Env* env_;
@@ -957,7 +957,7 @@ TEST_P(CompactionJobStatsTest, UniversalCompactionTest) {
  uint64_t key_base = 100000000l;
  // Note: key_base must be multiple of num_keys_per_L0_file
  int num_keys_per_table = 100;
-  const uint32_t kTestScale = 6;
+  const uint32_t kTestScale = 8;
  const int kKeySize = 10;
  const int kValueSize = 900;
  double compression_ratio = 1.0;
@@ -1008,9 +1008,8 @@ TEST_P(CompactionJobStatsTest, UniversalCompactionTest) {
            num_input_units,
            num_keys_per_table * num_input_units,
            1.0, 0, false));
-    dbfull()->TEST_WaitForCompact();
  }
-  ASSERT_EQ(stats_checker->NumberOfUnverifiedStats(), 3U);
+  ASSERT_EQ(stats_checker->NumberOfUnverifiedStats(), 4U);

  for (uint64_t start_key = key_base;
                start_key <= key_base * kTestScale;
@@ -68,8 +68,7 @@ class CompactionJobTest : public testing::Test {
  CompactionJobTest()
      : env_(Env::Default()),
        dbname_(test::TmpDir() + "/compaction_job_test"),
-        db_options_(),
-        mutable_cf_options_(cf_options_),
+        mutable_cf_options_(Options(), ImmutableCFOptions(Options())),
        table_cache_(NewLRUCache(50000, 16)),
        write_buffer_manager_(db_options_.db_write_buffer_size),
        versions_(new VersionSet(dbname_, &db_options_, env_options_,
@@ -240,10 +239,10 @@ class CompactionJobTest : public testing::Test {
      num_input_files += level_files.size();
    }

-    Compaction compaction(cfd->current()->storage_info(), *cfd->ioptions(),
+    Compaction compaction(cfd->current()->storage_info(),
                          *cfd->GetLatestMutableCFOptions(),
-                          compaction_input_files, 1, 1024 * 1024,
-                          10 * 1024 * 1024, 0, kNoCompression, {}, true);
+                          compaction_input_files, 1, 1024 * 1024, 10, 0,
+                          kNoCompression, {}, true);
    compaction.SetInputVersion(cfd->current());

    LogBuffer log_buffer(InfoLogLevel::INFO_LEVEL, db_options_.info_log.get());
@@ -281,11 +280,11 @@ class CompactionJobTest : public testing::Test {
  Env* env_;
  std::string dbname_;
  EnvOptions env_options_;
-  ImmutableDBOptions db_options_;
-  ColumnFamilyOptions cf_options_;
  MutableCFOptions mutable_cf_options_;
  std::shared_ptr<Cache> table_cache_;
  WriteController write_controller_;
+  DBOptions db_options_;
+  ColumnFamilyOptions cf_options_;
  WriteBufferManager write_buffer_manager_;
  std::unique_ptr<VersionSet> versions_;
  InstrumentedMutex mutex_;
@@ -151,15 +151,17 @@ CompactionPicker::~CompactionPicker() {}

 // Delete this compaction from the list of running compactions.
 void CompactionPicker::ReleaseCompactionFiles(Compaction* c, Status status) {
-  UnregisterCompaction(c);
+  if (c->start_level() == 0 ||
+      ioptions_.compaction_style == kCompactionStyleUniversal) {
+    level0_compactions_in_progress_.erase(c);
+  }
  if (!status.ok()) {
    c->ResetNextCompactionIndex();
  }
 }

 void CompactionPicker::GetRange(const CompactionInputFiles& inputs,
-                                InternalKey* smallest,
-                                InternalKey* largest) const {
+                                InternalKey* smallest, InternalKey* largest) {
  const int level = inputs.level;
  assert(!inputs.empty());
  smallest->Clear();
@@ -188,8 +190,7 @@ void CompactionPicker::GetRange(const CompactionInputFiles& inputs,

 void CompactionPicker::GetRange(const CompactionInputFiles& inputs1,
                                const CompactionInputFiles& inputs2,
-                                InternalKey* smallest,
-                                InternalKey* largest) const {
+                                InternalKey* smallest, InternalKey* largest) {
  assert(!inputs1.empty() || !inputs2.empty());
  if (inputs1.empty()) {
    GetRange(inputs2, smallest, largest);
@@ -205,33 +206,6 @@ void CompactionPicker::GetRange(const CompactionInputFiles& inputs1,
  }
 }

-void CompactionPicker::GetRange(const std::vector<CompactionInputFiles>& inputs,
-                                InternalKey* smallest,
-                                InternalKey* largest) const {
-  InternalKey current_smallest;
-  InternalKey current_largest;
-  bool initialized = false;
-  for (const auto& in : inputs) {
-    if (in.empty()) {
-      continue;
-    }
-    GetRange(in, &current_smallest, &current_largest);
-    if (!initialized) {
-      *smallest = current_smallest;
-      *largest = current_largest;
-      initialized = true;
-    } else {
-      if (icmp_->Compare(current_smallest, *smallest) < 0) {
-        *smallest = current_smallest;
-      }
-      if (icmp_->Compare(current_largest, *largest) > 0) {
-        *largest = current_largest;
-      }
-    }
-  }
-  assert(initialized);
-}
-
 bool CompactionPicker::ExpandWhileOverlapping(const std::string& cf_name,
                                              VersionStorageInfo* vstorage,
                                              CompactionInputFiles* inputs) {
@@ -276,42 +250,6 @@ bool CompactionPicker::ExpandWhileOverlapping(const std::string& cf_name,
  return true;
 }

-bool CompactionPicker::RangeOverlapWithCompaction(
-    const Slice& smallest_user_key, const Slice& largest_user_key,
-    int level) const {
-  const Comparator* ucmp = icmp_->user_comparator();
-  for (Compaction* c : compactions_in_progress_) {
-    if (c->output_level() == level &&
-        ucmp->Compare(smallest_user_key, c->GetLargestUserKey()) <= 0 &&
-        ucmp->Compare(largest_user_key, c->GetSmallestUserKey()) >= 0) {
-      // Overlap
-      return true;
-    }
-  }
-  // Did not overlap with any running compaction in level `level`
-  return false;
-}
-
-bool CompactionPicker::FilesRangeOverlapWithCompaction(
-    const std::vector<CompactionInputFiles>& inputs, int level) const {
-  bool is_empty = true;
-  for (auto& in : inputs) {
-    if (!in.empty()) {
-      is_empty = false;
-      break;
-    }
-  }
-  if (is_empty) {
-    // No files in inputs
-    return false;
-  }
-
-  InternalKey smallest, largest;
-  GetRange(inputs, &smallest, &largest);
-  return RangeOverlapWithCompaction(smallest.user_key(), largest.user_key(),
-                                    level);
-}
-
 // Returns true if any one of specified files are being compacted
 bool CompactionPicker::FilesInCompaction(
    const std::vector<FileMetaData*>& files) {
@@ -328,6 +266,10 @@ Compaction* CompactionPicker::FormCompaction(
    const std::vector<CompactionInputFiles>& input_files, int output_level,
    VersionStorageInfo* vstorage, const MutableCFOptions& mutable_cf_options,
    uint32_t output_path_id) {
+  uint64_t max_grandparent_overlap_bytes =
+      output_level + 1 < vstorage->num_levels()
+          ? mutable_cf_options.MaxGrandParentOverlapBytes(output_level + 1)
+          : std::numeric_limits<uint64_t>::max();
  assert(input_files.size());

  // TODO(rven ): we might be able to run concurrent level 0 compaction
@@ -336,19 +278,16 @@ Compaction* CompactionPicker::FormCompaction(
  if ((input_files[0].level == 0) && !level0_compactions_in_progress_.empty()) {
    return nullptr;
  }
-  // This compaction output could overlap with a running compaction
-  if (FilesRangeOverlapWithCompaction(input_files, output_level)) {
-    return nullptr;
-  }
-  auto c =
-      new Compaction(vstorage, ioptions_, mutable_cf_options, input_files,
-                     output_level, compact_options.output_file_size_limit,
-                     mutable_cf_options.max_compaction_bytes, output_path_id,
-                     compact_options.compression, /* grandparents */ {}, true);
+  auto c = new Compaction(
+      vstorage, mutable_cf_options, input_files, output_level,
+      compact_options.output_file_size_limit, max_grandparent_overlap_bytes,
+      output_path_id, compact_options.compression, /* grandparents */ {}, true);

  // If it's level 0 compaction, make sure we don't execute any other level 0
  // compactions in parallel
-  RegisterCompaction(c);
+  if ((c != nullptr) && (input_files[0].level == 0)) {
+    level0_compactions_in_progress_.insert(c);
+  }
  return c;
 }

@@ -451,9 +390,6 @@ bool CompactionPicker::SetupOtherInputs(
  vstorage->GetOverlappingInputs(output_level, &smallest, &largest,
                                 &output_level_inputs->files, *parent_index,
                                 parent_index);
-  if (!output_level_inputs->empty()) {
-    ExpandWhileOverlapping(cf_name, vstorage, output_level_inputs);
-  }

  if (FilesInCompaction(output_level_inputs->files)) {
    return false;
@@ -477,7 +413,8 @@ bool CompactionPicker::SetupOtherInputs(
    const uint64_t inputs1_size =
        TotalCompensatedFileSize(output_level_inputs->files);
    const uint64_t expanded0_size = TotalCompensatedFileSize(expanded0.files);
-    uint64_t limit = mutable_cf_options.max_compaction_bytes;
+    uint64_t limit =
+        mutable_cf_options.ExpandedCompactionByteSizeLimit(input_level);
    if (expanded0.size() > inputs->size() &&
        inputs1_size + expanded0_size < limit &&
        !FilesInCompaction(expanded0.files) &&
@@ -570,24 +507,16 @@ Compaction* CompactionPicker::CompactRange(
        return nullptr;
      }
    }
-
-    // 2 non-exclusive manual compactions could run at the same time producing
-    // overlaping outputs in the same level.
-    if (FilesRangeOverlapWithCompaction(inputs, output_level)) {
-      // This compaction output could potentially conflict with the output
-      // of a currently running compaction, we cannot run it.
-      *manual_conflict = true;
-      return nullptr;
-    }
-
    Compaction* c = new Compaction(
-        vstorage, ioptions_, mutable_cf_options, std::move(inputs),
-        output_level, mutable_cf_options.MaxFileSizeForLevel(output_level),
-        /* max_compaction_bytes */ LLONG_MAX, output_path_id,
+        vstorage, mutable_cf_options, std::move(inputs), output_level,
+        mutable_cf_options.MaxFileSizeForLevel(output_level),
+        /* max_grandparent_overlap_bytes */ LLONG_MAX, output_path_id,
        GetCompressionType(ioptions_, vstorage, mutable_cf_options,
                           output_level, 1),
        /* grandparents */ {}, /* is manual */ true);
-    RegisterCompaction(c);
+    if (start_level == 0) {
+      level0_compactions_in_progress_.insert(c);
+    }
    return c;
  }

@@ -619,7 +548,8 @@ Compaction* CompactionPicker::CompactRange(
  // and we must not pick one file and drop another older file if the
  // two files overlap.
  if (input_level > 0) {
-    const uint64_t limit = mutable_cf_options.max_compaction_bytes;
+    const uint64_t limit = mutable_cf_options.MaxFileSizeForLevel(input_level) *
+                           mutable_cf_options.source_compaction_factor;
    uint64_t total = 0;
    for (size_t i = 0; i + 1 < inputs.size(); ++i) {
      uint64_t s = inputs[i]->compensated_file_size;
@@ -676,33 +606,27 @@ Compaction* CompactionPicker::CompactRange(
    }
  }

-  // 2 non-exclusive manual compactions could run at the same time producing
-  // overlaping outputs in the same level.
-  if (FilesRangeOverlapWithCompaction(compaction_inputs, output_level)) {
-    // This compaction output could potentially conflict with the output
-    // of a currently running compaction, we cannot run it.
-    *manual_conflict = true;
-    return nullptr;
-  }
-
  std::vector<FileMetaData*> grandparents;
  GetGrandparents(vstorage, inputs, output_level_inputs, &grandparents);
  Compaction* compaction = new Compaction(
-      vstorage, ioptions_, mutable_cf_options, std::move(compaction_inputs),
-      output_level, mutable_cf_options.MaxFileSizeForLevel(output_level),
-      mutable_cf_options.max_compaction_bytes, output_path_id,
+      vstorage, mutable_cf_options, std::move(compaction_inputs), output_level,
+      mutable_cf_options.MaxFileSizeForLevel(output_level),
+      mutable_cf_options.MaxGrandParentOverlapBytes(input_level),
+      output_path_id,
      GetCompressionType(ioptions_, vstorage, mutable_cf_options, output_level,
                         vstorage->base_level()),
      std::move(grandparents), /* is manual compaction */ true);

  TEST_SYNC_POINT_CALLBACK("CompactionPicker::CompactRange:Return", compaction);
-  RegisterCompaction(compaction);
+  if (input_level == 0) {
+    level0_compactions_in_progress_.insert(compaction);
+  }

  // Creating a compaction influences the compaction score because the score
  // takes running compactions into account (by skipping files that are already
  // being compacted). Since we just changed compaction score, we recalculate it
  // here
-  vstorage->ComputeCompactionScore(ioptions_, mutable_cf_options);
+  vstorage->ComputeCompactionScore(mutable_cf_options);

  return compaction;
 }
@@ -932,30 +856,6 @@ Status CompactionPicker::SanitizeCompactionInputFiles(
 }
 #endif  // !ROCKSDB_LITE

-void CompactionPicker::RegisterCompaction(Compaction* c) {
-  if (c == nullptr) {
-    return;
-  }
-  assert(ioptions_.compaction_style != kCompactionStyleLevel ||
-         !FilesRangeOverlapWithCompaction(*c->inputs(), c->output_level()));
-  if (c->start_level() == 0 ||
-      ioptions_.compaction_style == kCompactionStyleUniversal) {
-    level0_compactions_in_progress_.insert(c);
-  }
-  compactions_in_progress_.insert(c);
-}
-
-void CompactionPicker::UnregisterCompaction(Compaction* c) {
-  if (c == nullptr) {
-    return;
-  }
-  if (c->start_level() == 0 ||
-      ioptions_.compaction_style == kCompactionStyleUniversal) {
-    level0_compactions_in_progress_.erase(c);
-  }
-  compactions_in_progress_.erase(c);
-}
-
 bool LevelCompactionPicker::NeedsCompaction(
    const VersionStorageInfo* vstorage) const {
  if (!vstorage->FilesMarkedForCompaction().empty()) {
@@ -1039,8 +939,7 @@ Compaction* LevelCompactionPicker::PickCompaction(
      output_level = (level == 0) ? vstorage->base_level() : level + 1;
      if (PickCompactionBySize(vstorage, level, output_level, &inputs,
                               &parent_index, &base_index) &&
-          ExpandWhileOverlapping(cf_name, vstorage, &inputs) &&
-          !FilesRangeOverlapWithCompaction({inputs}, output_level)) {
+          ExpandWhileOverlapping(cf_name, vstorage, &inputs)) {
        // found the compaction!
        if (level == 0) {
          // L0 score = `num L0 files` / `level0_file_num_compaction_trigger`
@@ -1113,24 +1012,12 @@ Compaction* LevelCompactionPicker::PickCompaction(
    compaction_inputs.push_back(output_level_inputs);
  }

-  // In some edge cases we could pick a compaction that will be compacting
-  // a key range that overlap with another running compaction, and both
-  // of them have the same output leve. This could happen if
-  // (1) we are running a non-exclusive manual compaction
-  // (2) AddFile ingest a new file into the LSM tree
-  // We need to disallow this from happening.
-  if (FilesRangeOverlapWithCompaction(compaction_inputs, output_level)) {
-    // This compaction output could potentially conflict with the output
-    // of a currently running compaction, we cannot run it.
-    return nullptr;
-  }
-
  std::vector<FileMetaData*> grandparents;
  GetGrandparents(vstorage, inputs, output_level_inputs, &grandparents);
  auto c = new Compaction(
-      vstorage, ioptions_, mutable_cf_options, std::move(compaction_inputs),
-      output_level, mutable_cf_options.MaxFileSizeForLevel(output_level),
-      mutable_cf_options.max_compaction_bytes,
+      vstorage, mutable_cf_options, std::move(compaction_inputs), output_level,
+      mutable_cf_options.MaxFileSizeForLevel(output_level),
+      mutable_cf_options.MaxGrandParentOverlapBytes(level),
      GetPathId(ioptions_, mutable_cf_options, output_level),
      GetCompressionType(ioptions_, vstorage, mutable_cf_options, output_level,
                         vstorage->base_level()),
@@ -1139,13 +1026,15 @@ Compaction* LevelCompactionPicker::PickCompaction(

  // If it's level 0 compaction, make sure we don't execute any other level 0
  // compactions in parallel
-  RegisterCompaction(c);
+  if (level == 0) {
+    level0_compactions_in_progress_.insert(c);
+  }

  // Creating a compaction influences the compaction score because the score
  // takes running compactions into account (by skipping files that are already
  // being compacted). Since we just changed compaction score, we recalculate it
  // here
-  vstorage->ComputeCompactionScore(ioptions_, mutable_cf_options);
+  vstorage->ComputeCompactionScore(mutable_cf_options);

  TEST_SYNC_POINT_CALLBACK("LevelCompactionPicker::PickCompaction:Return", c);

@@ -1421,8 +1310,6 @@ Compaction* UniversalCompactionPicker::PickCompaction(
      sorted_runs.size() <
          (unsigned int)mutable_cf_options.level0_file_num_compaction_trigger) {
    LogToBuffer(log_buffer, "[%s] Universal: nothing to do\n", cf_name.c_str());
-    TEST_SYNC_POINT_CALLBACK("UniversalCompactionPicker::PickCompaction:Return",
-                             nullptr);
    return nullptr;
  }
  VersionStorageInfo::LevelSummaryStorage tmp;
@@ -1457,34 +1344,19 @@ Compaction* UniversalCompactionPicker::PickCompaction(
      assert(sorted_runs.size() >=
             static_cast<size_t>(
                 mutable_cf_options.level0_file_num_compaction_trigger));
-      // Get the total number of sorted runs that are not being compacted
-      int num_sr_not_compacted = 0;
-      for (size_t i = 0; i < sorted_runs.size(); i++) {
-        if (sorted_runs[i].being_compacted == false) {
-          num_sr_not_compacted++;
-        }
-      }
-
-      // The number of sorted runs that are not being compacted is greater than
-      // the maximum allowed number of sorted runs
-      if (num_sr_not_compacted >
-          mutable_cf_options.level0_file_num_compaction_trigger) {
-        unsigned int num_files =
-            num_sr_not_compacted -
-            mutable_cf_options.level0_file_num_compaction_trigger + 1;
-        if ((c = PickCompactionUniversalReadAmp(
-                 cf_name, mutable_cf_options, vstorage, score, UINT_MAX,
-                 num_files, sorted_runs, log_buffer)) != nullptr) {
-          LogToBuffer(log_buffer,
-                      "[%s] Universal: compacting for file num -- %u\n",
-                      cf_name.c_str(), num_files);
-        }
+      unsigned int num_files =
+          static_cast<unsigned int>(sorted_runs.size()) -
+          mutable_cf_options.level0_file_num_compaction_trigger;
+      if ((c = PickCompactionUniversalReadAmp(
+               cf_name, mutable_cf_options, vstorage, score, UINT_MAX,
+               num_files, sorted_runs, log_buffer)) != nullptr) {
+        LogToBuffer(log_buffer,
+                    "[%s] Universal: compacting for file num -- %u\n",
+                    cf_name.c_str(), num_files);
      }
    }
  }
  if (c == nullptr) {
-    TEST_SYNC_POINT_CALLBACK("UniversalCompactionPicker::PickCompaction:Return",
-                             nullptr);
    return nullptr;
  }

@@ -1535,10 +1407,8 @@ Compaction* UniversalCompactionPicker::PickCompaction(
  MeasureTime(ioptions_.statistics, NUM_FILES_IN_SINGLE_COMPACTION,
              c->inputs(0)->size());

-  RegisterCompaction(c);
+  level0_compactions_in_progress_.insert(c);

-  TEST_SYNC_POINT_CALLBACK("UniversalCompactionPicker::PickCompaction:Return",
-                           c);
  return c;
 }

@@ -1757,7 +1627,7 @@ Compaction* UniversalCompactionPicker::PickCompactionUniversalReadAmp(
    compaction_reason = CompactionReason::kUniversalSizeRatio;
  }
  return new Compaction(
-      vstorage, ioptions_, mutable_cf_options, std::move(inputs), output_level,
+      vstorage, mutable_cf_options, std::move(inputs), output_level,
      mutable_cf_options.MaxFileSizeForLevel(output_level), LLONG_MAX, path_id,
      GetCompressionType(ioptions_, vstorage, mutable_cf_options, start_level,
                         1, enable_compression),
@@ -1881,7 +1751,7 @@ Compaction* UniversalCompactionPicker::PickCompactionUniversalSizeAmp(
  }

  return new Compaction(
-      vstorage, ioptions_, mutable_cf_options, std::move(inputs),
+      vstorage, mutable_cf_options, std::move(inputs),
      vstorage->num_levels() - 1,
      mutable_cf_options.MaxFileSizeForLevel(vstorage->num_levels() - 1),
      /* max_grandparent_overlap_bytes */ LLONG_MAX, path_id,
@@ -1946,10 +1816,10 @@ Compaction* FIFOCompactionPicker::PickCompaction(
    }
  }
  Compaction* c = new Compaction(
-      vstorage, ioptions_, mutable_cf_options, std::move(inputs), 0, 0, 0, 0,
+      vstorage, mutable_cf_options, std::move(inputs), 0, 0, 0, 0,
      kNoCompression, {}, /* is manual */ false, vstorage->CompactionScore(0),
      /* is deletion compaction */ true, CompactionReason::kFIFOMaxSize);
-  RegisterCompaction(c);
+  level0_compactions_in_progress_.insert(c);
  return c;
 }

@@ -20,7 +20,8 @@
 #include "rocksdb/env.h"
 #include "rocksdb/options.h"
 #include "rocksdb/status.h"
-#include "util/cf_options.h"
+#include "util/mutable_cf_options.h"
+

 namespace rocksdb {

@@ -113,12 +114,6 @@ class CompactionPicker {
    return !level0_compactions_in_progress_.empty();
  }

-  // Return true if the passed key range overlap with a compaction output
-  // that is currently running.
-  bool RangeOverlapWithCompaction(const Slice& smallest_user_key,
-                                  const Slice& largest_user_key,
-                                  int level) const;
-
 protected:
  int NumberLevels() const { return ioptions_.num_levels; }

@@ -126,20 +121,14 @@ class CompactionPicker {
  // *smallest, *largest.
  // REQUIRES: inputs is not empty
  void GetRange(const CompactionInputFiles& inputs, InternalKey* smallest,
-                InternalKey* largest) const;
+                InternalKey* largest);

  // Stores the minimal range that covers all entries in inputs1 and inputs2
  // in *smallest, *largest.
  // REQUIRES: inputs is not empty
  void GetRange(const CompactionInputFiles& inputs1,
                const CompactionInputFiles& inputs2, InternalKey* smallest,
-                InternalKey* largest) const;
-
-  // Stores the minimal range that covers all entries in inputs
-  // in *smallest, *largest.
-  // REQUIRES: inputs is not empty (at least on entry have one file)
-  void GetRange(const std::vector<CompactionInputFiles>& inputs,
-                InternalKey* smallest, InternalKey* largest) const;
+                InternalKey* largest);

  // Add more files to the inputs on "level" to make sure that
  // no newer version of a key is compacted to "level+1" while leaving an older
@@ -160,11 +149,6 @@ class CompactionPicker {
                         const InternalKey* smallest,
                         const InternalKey* largest, int level, int* index);

-  // Returns true if the key range that `inputs` files cover overlap with the
-  // key range of a currently running compaction.
-  bool FilesRangeOverlapWithCompaction(
-      const std::vector<CompactionInputFiles>& inputs, int level) const;
-
  bool SetupOtherInputs(const std::string& cf_name,
                        const MutableCFOptions& mutable_cf_options,
                        VersionStorageInfo* vstorage,
@@ -187,20 +171,10 @@ class CompactionPicker {
      const ColumnFamilyMetaData& cf_meta, const int output_level) const;
 #endif  // ROCKSDB_LITE

-  // Register this compaction in the set of running compactions
-  void RegisterCompaction(Compaction* c);
-
-  // Remove this compaction from the set of running compactions
-  void UnregisterCompaction(Compaction* c);
-
  // Keeps track of all compactions that are running on Level0.
-  // Protected by DB mutex
+  // It is protected by DB mutex
  std::set<Compaction*> level0_compactions_in_progress_;

-  // Keeps track of all compactions that are running.
-  // Protected by DB mutex
-  std::unordered_set<Compaction*> compactions_in_progress_;
-
  const InternalKeyComparator* const icmp_;
 };

@@ -48,7 +48,7 @@ class CompactionPickerTest : public testing::Test {
      : ucmp_(BytewiseComparator()),
        icmp_(ucmp_),
        ioptions_(options_),
-        mutable_cf_options_(options_),
+        mutable_cf_options_(options_, ioptions_),
        level_compaction_picker(ioptions_, &icmp_),
        cf_name_("dummy"),
        log_buffer_(InfoLogLevel::INFO_LEVEL, &logger_),
@@ -66,8 +66,8 @@ class CompactionPickerTest : public testing::Test {
  void NewVersionStorage(int num_levels, CompactionStyle style) {
    DeleteVersionStorage();
    options_.num_levels = num_levels;
-    vstorage_.reset(new VersionStorageInfo(&icmp_, ucmp_, options_.num_levels,
-                                           style, nullptr, false));
+    vstorage_.reset(new VersionStorageInfo(
+        &icmp_, ucmp_, options_.num_levels, style, nullptr));
    vstorage_->CalculateBaseBytes(ioptions_, mutable_cf_options_);
  }

@@ -115,11 +115,11 @@ class CompactionPickerTest : public testing::Test {

  void UpdateVersionStorageInfo() {
    vstorage_->CalculateBaseBytes(ioptions_, mutable_cf_options_);
-    vstorage_->UpdateFilesByCompactionPri(ioptions_.compaction_pri);
+    vstorage_->UpdateFilesByCompactionPri(mutable_cf_options_);
    vstorage_->UpdateNumNonEmptyLevels();
    vstorage_->GenerateFileIndexer();
    vstorage_->GenerateLevelFilesBrief();
-    vstorage_->ComputeCompactionScore(ioptions_, mutable_cf_options_);
+    vstorage_->ComputeCompactionScore(mutable_cf_options_);
    vstorage_->GenerateLevel0NonOverlapping();
    vstorage_->SetFinalized();
  }
@@ -350,10 +350,10 @@ TEST_F(CompactionPickerTest, Level0TriggerDynamic4) {
 TEST_F(CompactionPickerTest, LevelTriggerDynamic4) {
  int num_levels = ioptions_.num_levels;
  ioptions_.level_compaction_dynamic_level_bytes = true;
-  ioptions_.compaction_pri = kMinOverlappingRatio;
  mutable_cf_options_.level0_file_num_compaction_trigger = 2;
  mutable_cf_options_.max_bytes_for_level_base = 200;
  mutable_cf_options_.max_bytes_for_level_multiplier = 10;
+  mutable_cf_options_.compaction_pri = kMinOverlappingRatio;
  NewVersionStorage(num_levels, kCompactionStyleLevel);
  Add(0, 1U, "150", "200");
  Add(num_levels - 1, 3U, "200", "250", 300U);
@@ -489,10 +489,10 @@ TEST_F(CompactionPickerTest, NeedsCompactionFIFO) {

 TEST_F(CompactionPickerTest, CompactionPriMinOverlapping1) {
  NewVersionStorage(6, kCompactionStyleLevel);
-  ioptions_.compaction_pri = kMinOverlappingRatio;
  mutable_cf_options_.target_file_size_base = 10000000;
  mutable_cf_options_.target_file_size_multiplier = 10;
  mutable_cf_options_.max_bytes_for_level_base = 10 * 1024 * 1024;
+  mutable_cf_options_.compaction_pri = kMinOverlappingRatio;

  Add(2, 6U, "150", "179", 50000000U);
  Add(2, 7U, "180", "220", 50000000U);
@@ -516,10 +516,10 @@ TEST_F(CompactionPickerTest, CompactionPriMinOverlapping1) {

 TEST_F(CompactionPickerTest, CompactionPriMinOverlapping2) {
  NewVersionStorage(6, kCompactionStyleLevel);
-  ioptions_.compaction_pri = kMinOverlappingRatio;
  mutable_cf_options_.target_file_size_base = 10000000;
  mutable_cf_options_.target_file_size_multiplier = 10;
  mutable_cf_options_.max_bytes_for_level_base = 10 * 1024 * 1024;
+  mutable_cf_options_.compaction_pri = kMinOverlappingRatio;

  Add(2, 6U, "150", "175",
      60000000U);  // Overlaps with file 26, 27, total size 521M
@@ -546,9 +546,9 @@ TEST_F(CompactionPickerTest, CompactionPriMinOverlapping2) {

 TEST_F(CompactionPickerTest, CompactionPriMinOverlapping3) {
  NewVersionStorage(6, kCompactionStyleLevel);
-  ioptions_.compaction_pri = kMinOverlappingRatio;
  mutable_cf_options_.max_bytes_for_level_base = 10000000;
  mutable_cf_options_.max_bytes_for_level_multiplier = 10;
+  mutable_cf_options_.compaction_pri = kMinOverlappingRatio;

  // file 7 and 8 over lap with the same file, but file 8 is smaller so
  // it will be picked.
@@ -598,7 +598,7 @@ TEST_F(CompactionPickerTest, ParentIndexResetBug) {
 // ranges (with different sequence numbers) in the input files.
 TEST_F(CompactionPickerTest, OverlappingUserKeys) {
  NewVersionStorage(6, kCompactionStyleLevel);
-  ioptions_.compaction_pri = kByCompensatedSize;
+  mutable_cf_options_.compaction_pri = kByCompensatedSize;

  Add(1, 1U, "100", "150", 1U);
  // Overlapping user keys
@@ -621,9 +621,9 @@ TEST_F(CompactionPickerTest, OverlappingUserKeys2) {
  // Overlapping user keys on same level and output level
  Add(1, 1U, "200", "400", 1000000000U);
  Add(1, 2U, "400", "500", 1U, 0, 0);
-  Add(2, 3U, "000", "100", 1U);
-  Add(2, 4U, "100", "600", 1U, 0, 0);
-  Add(2, 5U, "600", "700", 1U, 0, 0);
+  Add(2, 3U, "400", "600", 1U);
+  // The following file is not in the compaction despite overlapping user keys
+  Add(2, 4U, "600", "700", 1U, 0, 0);
  UpdateVersionStorageInfo();

  std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
@@ -631,12 +631,10 @@ TEST_F(CompactionPickerTest, OverlappingUserKeys2) {
  ASSERT_TRUE(compaction.get() != nullptr);
  ASSERT_EQ(2U, compaction->num_input_levels());
  ASSERT_EQ(2U, compaction->num_input_files(0));
-  ASSERT_EQ(3U, compaction->num_input_files(1));
+  ASSERT_EQ(1U, compaction->num_input_files(1));
  ASSERT_EQ(1U, compaction->input(0, 0)->fd.GetNumber());
  ASSERT_EQ(2U, compaction->input(0, 1)->fd.GetNumber());
  ASSERT_EQ(3U, compaction->input(1, 0)->fd.GetNumber());
-  ASSERT_EQ(4U, compaction->input(1, 1)->fd.GetNumber());
-  ASSERT_EQ(5U, compaction->input(1, 2)->fd.GetNumber());
 }

 TEST_F(CompactionPickerTest, OverlappingUserKeys3) {
@@ -668,31 +666,6 @@ TEST_F(CompactionPickerTest, OverlappingUserKeys3) {
  ASSERT_EQ(7U, compaction->input(1, 1)->fd.GetNumber());
 }

-TEST_F(CompactionPickerTest, OverlappingUserKeys4) {
-  NewVersionStorage(6, kCompactionStyleLevel);
-  mutable_cf_options_.max_bytes_for_level_base = 1000000;
-
-  Add(1, 1U, "100", "150", 1U);
-  Add(1, 2U, "150", "199", 1U, 0, 0);
-  Add(1, 3U, "200", "250", 1100000U, 0, 0);
-  Add(1, 4U, "251", "300", 1U, 0, 0);
-  Add(1, 5U, "300", "350", 1U, 0, 0);
-
-  Add(2, 6U, "100", "115", 1U);
-  Add(2, 7U, "125", "325", 1U);
-  Add(2, 8U, "350", "400", 1U);
-  UpdateVersionStorageInfo();
-
-  std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
-      cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
-  ASSERT_TRUE(compaction.get() != nullptr);
-  ASSERT_EQ(2U, compaction->num_input_levels());
-  ASSERT_EQ(1U, compaction->num_input_files(0));
-  ASSERT_EQ(1U, compaction->num_input_files(1));
-  ASSERT_EQ(3U, compaction->input(0, 0)->fd.GetNumber());
-  ASSERT_EQ(7U, compaction->input(1, 0)->fd.GetNumber());
-}
-
 TEST_F(CompactionPickerTest, NotScheduleL1IfL0WithHigherPri1) {
  NewVersionStorage(6, kCompactionStyleLevel);
  mutable_cf_options_.level0_file_num_compaction_trigger = 2;
@@ -1061,57 +1034,6 @@ TEST_F(CompactionPickerTest, IsBottommostLevelTest) {
  DeleteVersionStorage();
 }

-TEST_F(CompactionPickerTest, MaxCompactionBytesHit) {
-  mutable_cf_options_.max_bytes_for_level_base = 1000000u;
-  mutable_cf_options_.max_compaction_bytes = 800000u;
-  ioptions_.level_compaction_dynamic_level_bytes = false;
-  NewVersionStorage(6, kCompactionStyleLevel);
-  // A compaction should be triggered and pick file 2 and 5.
-  // It cannot expand because adding file 1 and 3, the compaction size will
-  // exceed mutable_cf_options_.max_bytes_for_level_base.
-  Add(1, 1U, "100", "150", 300000U);
-  Add(1, 2U, "151", "200", 300001U, 0, 0);
-  Add(1, 3U, "201", "250", 300000U, 0, 0);
-  Add(1, 4U, "251", "300", 300000U, 0, 0);
-  Add(2, 5U, "160", "256", 1U);
-  UpdateVersionStorageInfo();
-
-  std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
-      cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
-  ASSERT_TRUE(compaction.get() != nullptr);
-  ASSERT_EQ(2U, compaction->num_input_levels());
-  ASSERT_EQ(1U, compaction->num_input_files(0));
-  ASSERT_EQ(1U, compaction->num_input_files(1));
-  ASSERT_EQ(2U, compaction->input(0, 0)->fd.GetNumber());
-  ASSERT_EQ(5U, compaction->input(1, 0)->fd.GetNumber());
-}
-
-TEST_F(CompactionPickerTest, MaxCompactionBytesNotHit) {
-  mutable_cf_options_.max_bytes_for_level_base = 1000000u;
-  mutable_cf_options_.max_compaction_bytes = 1000000u;
-  ioptions_.level_compaction_dynamic_level_bytes = false;
-  NewVersionStorage(6, kCompactionStyleLevel);
-  // A compaction should be triggered and pick file 2 and 5.
-  // and it expands to file 1 and 3 too.
-  Add(1, 1U, "100", "150", 300000U);
-  Add(1, 2U, "151", "200", 300001U, 0, 0);
-  Add(1, 3U, "201", "250", 300000U, 0, 0);
-  Add(1, 4U, "251", "300", 300000U, 0, 0);
-  Add(2, 5U, "000", "233", 1U);
-  UpdateVersionStorageInfo();
-
-  std::unique_ptr<Compaction> compaction(level_compaction_picker.PickCompaction(
-      cf_name_, mutable_cf_options_, vstorage_.get(), &log_buffer_));
-  ASSERT_TRUE(compaction.get() != nullptr);
-  ASSERT_EQ(2U, compaction->num_input_levels());
-  ASSERT_EQ(3U, compaction->num_input_files(0));
-  ASSERT_EQ(1U, compaction->num_input_files(1));
-  ASSERT_EQ(1U, compaction->input(0, 0)->fd.GetNumber());
-  ASSERT_EQ(2U, compaction->input(0, 1)->fd.GetNumber());
-  ASSERT_EQ(3U, compaction->input(0, 2)->fd.GetNumber());
-  ASSERT_EQ(5U, compaction->input(1, 0)->fd.GetNumber());
-}
-
 }  // namespace rocksdb

 int main(int argc, char** argv) {
@@ -40,10 +40,6 @@ class KVIter : public Iterator {
  virtual void Seek(const Slice& k) override {
    iter_ = map_->lower_bound(k.ToString());
  }
-  virtual void SeekForPrev(const Slice& k) override {
-    iter_ = map_->upper_bound(k.ToString());
-    Prev();
-  }
  virtual void Next() override { ++iter_; }
  virtual void Prev() override {
    if (iter_ == map_->begin()) {
@@ -9,7 +9,6 @@
 #include <cstdlib>
 #include "db/db_test_util.h"
 #include "port/stack_trace.h"
-#include "util/lru_cache.h"

 namespace rocksdb {

@@ -172,7 +171,7 @@ TEST_F(DBBlockCacheTest, TestWithCompressedBlockCache) {
  InitTable(options);

  std::shared_ptr<Cache> cache = NewLRUCache(0, 0, false);
-  std::shared_ptr<Cache> compressed_cache = NewLRUCache(1 << 25, 0, false);
+  std::shared_ptr<Cache> compressed_cache = NewLRUCache(0, 0, false);
  table_options.block_cache = cache;
  table_options.block_cache_compressed = compressed_cache;
  options.table_factory.reset(new BlockBasedTableFactory(table_options));
@@ -204,6 +203,9 @@ TEST_F(DBBlockCacheTest, TestWithCompressedBlockCache) {
  cache->SetCapacity(usage);
  cache->SetStrictCapacityLimit(true);
  ASSERT_EQ(usage, cache->GetPinnedUsage());
+  // compressed_cache->SetCapacity(compressed_usage);
+  compressed_cache->SetCapacity(0);
+  // compressed_cache->SetStrictCapacityLimit(true);
  iter = db_->NewIterator(read_options);
  iter->Seek(ToString(kNumBlocks - 1));
  ASSERT_TRUE(iter->status().IsIncomplete());
@@ -268,16 +270,16 @@ TEST_F(DBBlockCacheTest, IndexAndFilterBlocksOfNewTableAddedToCache) {
  ASSERT_EQ(2, TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT));

  // Make sure index block is in cache.
-  auto index_block_hit = TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT);
+  auto index_block_hit = TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT);
  value = Get(1, "key");
-  ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
+  ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
  ASSERT_EQ(index_block_hit + 1,
-            TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT));
+            TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT));

  value = Get(1, "key");
-  ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
+  ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
  ASSERT_EQ(index_block_hit + 2,
-            TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT));
+            TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT));
 }

 TEST_F(DBBlockCacheTest, IndexAndFilterBlocksStats) {
@@ -321,91 +323,6 @@ TEST_F(DBBlockCacheTest, IndexAndFilterBlocksStats) {
            filter_bytes_insert);
 }

-namespace {
-
-// A mock cache wraps LRUCache, and record how many entries have been
-// inserted for each priority.
-class MockCache : public LRUCache {
- public:
-  static uint32_t high_pri_insert_count;
-  static uint32_t low_pri_insert_count;
-
-  MockCache() : LRUCache(1 << 25, 0, false, 0.0) {}
-
-  virtual Status Insert(const Slice& key, void* value, size_t charge,
-                        void (*deleter)(const Slice& key, void* value),
-                        Handle** handle, Priority priority) override {
-    if (priority == Priority::LOW) {
-      low_pri_insert_count++;
-    } else {
-      high_pri_insert_count++;
-    }
-    return LRUCache::Insert(key, value, charge, deleter, handle, priority);
-  }
-};
-
-uint32_t MockCache::high_pri_insert_count = 0;
-uint32_t MockCache::low_pri_insert_count = 0;
-
-}  // anonymous namespace
-
-TEST_F(DBBlockCacheTest, IndexAndFilterBlocksCachePriority) {
-  for (auto priority : {Cache::Priority::LOW, Cache::Priority::HIGH}) {
-    Options options = CurrentOptions();
-    options.create_if_missing = true;
-    options.statistics = rocksdb::CreateDBStatistics();
-    BlockBasedTableOptions table_options;
-    table_options.cache_index_and_filter_blocks = true;
-    table_options.block_cache.reset(new MockCache());
-    table_options.filter_policy.reset(NewBloomFilterPolicy(20));
-    table_options.cache_index_and_filter_blocks_with_high_priority =
-        priority == Cache::Priority::HIGH ? true : false;
-    options.table_factory.reset(new BlockBasedTableFactory(table_options));
-    DestroyAndReopen(options);
-
-    MockCache::high_pri_insert_count = 0;
-    MockCache::low_pri_insert_count = 0;
-
-    // Create a new table.
-    ASSERT_OK(Put("foo", "value"));
-    ASSERT_OK(Put("bar", "value"));
-    ASSERT_OK(Flush());
-    ASSERT_EQ(1, NumTableFilesAtLevel(0));
-
-    // index/filter blocks added to block cache right after table creation.
-    ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
-    ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
-    ASSERT_EQ(2, /* only index/filter were added */
-              TestGetTickerCount(options, BLOCK_CACHE_ADD));
-    ASSERT_EQ(0, TestGetTickerCount(options, BLOCK_CACHE_DATA_MISS));
-    if (priority == Cache::Priority::LOW) {
-      ASSERT_EQ(0, MockCache::high_pri_insert_count);
-      ASSERT_EQ(2, MockCache::low_pri_insert_count);
-    } else {
-      ASSERT_EQ(2, MockCache::high_pri_insert_count);
-      ASSERT_EQ(0, MockCache::low_pri_insert_count);
-    }
-
-    // Access data block.
-    ASSERT_EQ("value", Get("foo"));
-
-    ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
-    ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
-    ASSERT_EQ(3, /*adding data block*/
-              TestGetTickerCount(options, BLOCK_CACHE_ADD));
-    ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_DATA_MISS));
-
-    // Data block should be inserted with low priority.
-    if (priority == Cache::Priority::LOW) {
-      ASSERT_EQ(0, MockCache::high_pri_insert_count);
-      ASSERT_EQ(3, MockCache::low_pri_insert_count);
-    } else {
-      ASSERT_EQ(2, MockCache::high_pri_insert_count);
-      ASSERT_EQ(1, MockCache::low_pri_insert_count);
-    }
-  }
-}
-
 TEST_F(DBBlockCacheTest, ParanoidFileChecks) {
  Options options = CurrentOptions();
  options.create_if_missing = true;
@@ -305,8 +305,7 @@ TEST_F(DBCompactionTest, TestTableReaderForCompaction) {
  dbfull()->TEST_WaitForCompact();
  // Preloading iterator issues one table cache lookup and creates
  // a new table reader. One file is created for flush and one for compaction.
-  // Compaction inputs make no table cache look-up for data iterators or
-  // range tombstone iterators since they're already cached.
+  // Compaction inputs make no table cache look-up.
  ASSERT_EQ(num_table_cache_lookup, 2);
  // Create new iterator for:
  // (1) 1 for verifying flush results
@@ -650,72 +649,6 @@ TEST_F(DBCompactionTest, MinorCompactionsHappen) {
  } while (ChangeCompactOptions());
 }

-TEST_F(DBCompactionTest, UserKeyCrossFile1) {
-  Options options = CurrentOptions();
-  options.compaction_style = kCompactionStyleLevel;
-  options.level0_file_num_compaction_trigger = 3;
-
-  DestroyAndReopen(options);
-
-  // create first file and flush to l0
-  Put("4", "A");
-  Put("3", "A");
-  Flush();
-  dbfull()->TEST_WaitForFlushMemTable();
-
-  Put("2", "A");
-  Delete("3");
-  Flush();
-  dbfull()->TEST_WaitForFlushMemTable();
-  ASSERT_EQ("NOT_FOUND", Get("3"));
-
-  // move both files down to l1
-  dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr);
-  ASSERT_EQ("NOT_FOUND", Get("3"));
-
-  for (int i = 0; i < 3; i++) {
-    Put("2", "B");
-    Flush();
-    dbfull()->TEST_WaitForFlushMemTable();
-  }
-  dbfull()->TEST_WaitForCompact();
-
-  ASSERT_EQ("NOT_FOUND", Get("3"));
-}
-
-TEST_F(DBCompactionTest, UserKeyCrossFile2) {
-  Options options = CurrentOptions();
-  options.compaction_style = kCompactionStyleLevel;
-  options.level0_file_num_compaction_trigger = 3;
-
-  DestroyAndReopen(options);
-
-  // create first file and flush to l0
-  Put("4", "A");
-  Put("3", "A");
-  Flush();
-  dbfull()->TEST_WaitForFlushMemTable();
-
-  Put("2", "A");
-  SingleDelete("3");
-  Flush();
-  dbfull()->TEST_WaitForFlushMemTable();
-  ASSERT_EQ("NOT_FOUND", Get("3"));
-
-  // move both files down to l1
-  dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr);
-  ASSERT_EQ("NOT_FOUND", Get("3"));
-
-  for (int i = 0; i < 3; i++) {
-    Put("2", "B");
-    Flush();
-    dbfull()->TEST_WaitForFlushMemTable();
-  }
-  dbfull()->TEST_WaitForCompact();
-
-  ASSERT_EQ("NOT_FOUND", Get("3"));
-}
-
 TEST_F(DBCompactionTest, ZeroSeqIdCompaction) {
  Options options = CurrentOptions();
  options.compaction_style = kCompactionStyleLevel;
@@ -137,7 +137,7 @@ TEST_F(DBTestDynamicLevel, DynamicLevelMaxBytesBase2) {
  options.max_bytes_for_level_multiplier = 4;
  options.max_background_compactions = 2;
  options.num_levels = 5;
-  options.max_compaction_bytes = 0;  // Force not expanding in compactions
+  options.expanded_compaction_factor = 0;  // Force not expanding in compactions
  BlockBasedTableOptions table_options;
  table_options.block_size = 1024;
  options.table_factory.reset(NewBlockBasedTableFactory(table_options));
@@ -223,9 +223,8 @@ TEST_F(DBTestDynamicLevel, DynamicLevelMaxBytesBase2) {
  ASSERT_OK(dbfull()->SetOptions({
      {"disable_auto_compactions", "true"},
  }));
-  // Write about 650K more.
-  // Each file is about 11KB, with 9KB of data.
-  for (int i = 0; i < 1300; i++) {
+  // Write about 600K more
+  for (int i = 0; i < 1500; i++) {
    ASSERT_OK(Put(Key(static_cast<int>(rnd.Uniform(kMaxKey))),
                  RandomString(&rnd, 380)));
  }
@@ -295,7 +294,7 @@ TEST_F(DBTestDynamicLevel, DynamicLevelMaxBytesCompactRange) {
  options.max_background_compactions = 1;
  const int kNumLevels = 5;
  options.num_levels = kNumLevels;
-  options.max_compaction_bytes = 1;  // Force not expanding in compactions
+  options.expanded_compaction_factor = 0;  // Force not expanding in compactions
  BlockBasedTableOptions table_options;
  table_options.block_size = 1024;
  options.table_factory.reset(NewBlockBasedTableFactory(table_options));
@@ -35,10 +35,10 @@ Status DBImpl::DisableFileDeletions() {
  InstrumentedMutexLock l(&mutex_);
  ++disable_delete_obsolete_files_;
  if (disable_delete_obsolete_files_ == 1) {
-    Log(InfoLogLevel::INFO_LEVEL, immutable_db_options_.info_log,
+    Log(InfoLogLevel::INFO_LEVEL, db_options_.info_log,
        "File Deletions Disabled");
  } else {
-    Log(InfoLogLevel::WARN_LEVEL, immutable_db_options_.info_log,
+    Log(InfoLogLevel::WARN_LEVEL, db_options_.info_log,
        "File Deletions Disabled, but already disabled. Counter: %d",
        disable_delete_obsolete_files_);
  }
@@ -59,12 +59,12 @@ Status DBImpl::EnableFileDeletions(bool force) {
      --disable_delete_obsolete_files_;
    }
    if (disable_delete_obsolete_files_ == 0)  {
-      Log(InfoLogLevel::INFO_LEVEL, immutable_db_options_.info_log,
+      Log(InfoLogLevel::INFO_LEVEL, db_options_.info_log,
          "File Deletions Enabled");
      should_purge_files = true;
      FindObsoleteFiles(&job_context, true);
    } else {
-      Log(InfoLogLevel::WARN_LEVEL, immutable_db_options_.info_log,
+      Log(InfoLogLevel::WARN_LEVEL, db_options_.info_log,
          "File Deletions Enable, but not really enabled. Counter: %d",
          disable_delete_obsolete_files_);
    }
@@ -73,7 +73,7 @@ Status DBImpl::EnableFileDeletions(bool force) {
    PurgeObsoleteFiles(job_context);
  }
  job_context.Clean();
-  LogFlush(immutable_db_options_.info_log);
+  LogFlush(db_options_.info_log);
  return Status::OK();
 }

@@ -110,7 +110,7 @@ Status DBImpl::GetLiveFiles(std::vector<std::string>& ret,

    if (!status.ok()) {
      mutex_.Unlock();
-      Log(InfoLogLevel::ERROR_LEVEL, immutable_db_options_.info_log,
+      Log(InfoLogLevel::ERROR_LEVEL, db_options_.info_log,
          "Cannot Flush data %s\n", status.ToString().c_str());
      return status;
    }
@@ -22,7 +22,6 @@
 #include "db/column_family.h"
 #include "db/compaction_job.h"
 #include "db/dbformat.h"
-#include "db/external_sst_file_ingestion_job.h"
 #include "db/flush_job.h"
 #include "db/flush_scheduler.h"
 #include "db/internal_stats.h"
@@ -41,7 +40,6 @@
 #include "rocksdb/write_buffer_manager.h"
 #include "table/scoped_arena_iterator.h"
 #include "util/autovector.h"
-#include "util/db_options.h"
 #include "util/event_logger.h"
 #include "util/hash.h"
 #include "util/instrumented_mutex.h"
@@ -157,9 +155,6 @@ class DBImpl : public DB {
      ColumnFamilyHandle* column_family,
      const std::unordered_map<std::string, std::string>& options_map) override;

-  virtual Status SetDBOptions(
-      const std::unordered_map<std::string, std::string>& options_map) override;
-
  using DB::NumberLevels;
  virtual int NumberLevels(ColumnFamilyHandle* column_family) override;
  using DB::MaxMemCompactionLevel;
@@ -170,9 +165,10 @@ class DBImpl : public DB {
  virtual const std::string& GetName() const override;
  virtual Env* GetEnv() const override;
  using DB::GetOptions;
-  virtual Options GetOptions(ColumnFamilyHandle* column_family) const override;
+  virtual const Options& GetOptions(
+      ColumnFamilyHandle* column_family) const override;
  using DB::GetDBOptions;
-  virtual DBOptions GetDBOptions() const override;
+  virtual const DBOptions& GetDBOptions() const override;
  using DB::Flush;
  virtual Status Flush(const FlushOptions& options,
                       ColumnFamilyHandle* column_family) override;
@@ -256,16 +252,17 @@ class DBImpl : public DB {
  //
  // Returns OK or NotFound on success,
  // other status on unexpected error.
-  // TODO(andrewkr): this API need to be aware of range deletion operations
  Status GetLatestSequenceForKey(SuperVersion* sv, const Slice& key,
                                 bool cache_only, SequenceNumber* seq,
                                 bool* found_record_for_key);

-  using DB::IngestExternalFile;
-  virtual Status IngestExternalFile(
-      ColumnFamilyHandle* column_family,
-      const std::vector<std::string>& external_files,
-      const IngestExternalFileOptions& ingestion_options) override;
+  using DB::AddFile;
+  virtual Status AddFile(ColumnFamilyHandle* column_family,
+                         const std::vector<ExternalSstFileInfo>& file_info_list,
+                         bool move_file) override;
+  virtual Status AddFile(ColumnFamilyHandle* column_family,
+                         const std::vector<std::string>& file_path_list,
+                         bool move_file) override;

 #endif  // ROCKSDB_LITE

@@ -362,18 +359,12 @@ class DBImpl : public DB {
  uint64_t TEST_FindMinLogContainingOutstandingPrep();
  uint64_t TEST_FindMinPrepLogReferencedByMemTable();

-  int TEST_BGCompactionsAllowed() const;
-
 #endif  // NDEBUG

  // Return maximum background compaction allowed to be scheduled based on
  // compaction status.
  int BGCompactionsAllowed() const;

-  // move logs pending closing from job_context to the DB queue and
-  // schedule a purge
-  void ScheduleBgLogWriterClose(JobContext* job_context);
-
  // Returns the list of live files in 'live' and the list
  // of all files in the filesystem in 'candidate_files'.
  // If force == false and the last call was less than
@@ -395,10 +386,6 @@ class DBImpl : public DB {

  const SnapshotList& snapshots() const { return snapshots_; }

-  const ImmutableDBOptions& immutable_db_options() const {
-    return immutable_db_options_;
-  }
-
  void CancelAllBackgroundWork(bool wait);

  // Find Super version and reference it. Based on options, it might return
@@ -465,7 +452,7 @@ class DBImpl : public DB {
    ~RecoveredTransaction() { delete batch_; }
  };

-  bool allow_2pc() const { return immutable_db_options_.allow_2pc; }
+  bool allow_2pc() const { return db_options_.allow_2pc; }

  std::unordered_map<std::string, RecoveredTransaction*>
  recovered_transactions() {
@@ -506,9 +493,6 @@ class DBImpl : public DB {

  void MarkLogAsHavingPrepSectionFlushed(uint64_t log);
  void MarkLogAsContainingPrepSection(uint64_t log);
-  void AddToLogsToFreeQueue(log::Writer* log_writer) {
-    logs_to_free_queue_.push_back(log_writer);
-  }

  Status NewDB();

@@ -516,9 +500,7 @@ class DBImpl : public DB {
  Env* const env_;
  const std::string dbname_;
  unique_ptr<VersionSet> versions_;
-  const DBOptions initial_db_options_;
-  const ImmutableDBOptions immutable_db_options_;
-  MutableDBOptions mutable_db_options_;
+  const DBOptions db_options_;
  Statistics* stats_;
  std::unordered_map<std::string, RecoveredTransaction*>
      recovered_transactions_;
@@ -550,9 +532,6 @@ class DBImpl : public DB {
  void NotifyOnMemTableSealed(ColumnFamilyData* cfd,
                              const MemTableInfo& mem_table_info);

-  void NotifyOnExternalFileIngested(
-      ColumnFamilyData* cfd, const ExternalSstFileIngestionJob& ingestion_job);
-
  void NewThreadStatusCfInfo(ColumnFamilyData* cfd) const;

  void EraseThreadStatusCfInfo(ColumnFamilyData* cfd) const;
@@ -622,8 +601,6 @@ class DBImpl : public DB {
  // and blocked by any other pending_outputs_ calls)
  void ReleaseFileNumberFromPendingOutputs(std::list<uint64_t>::iterator v);

-  Status SyncClosedLogs(JobContext* job_context);
-
  // Flush the in-memory write buffer to storage.  Switches to a new
  // log-file/memtable and writes a new descriptor iff successful.
  Status FlushMemTableToOutputFile(ColumnFamilyData* cfd,
@@ -633,7 +610,7 @@ class DBImpl : public DB {

  // REQUIRES: log_numbers are sorted in ascending order
  Status RecoverLogFiles(const std::vector<uint64_t>& log_numbers,
-                         SequenceNumber* next_sequence, bool read_only);
+                         SequenceNumber* max_sequence, bool read_only);

  // The following two methods are used to flush a memtable to
  // storage. The first one is used at database RecoveryTime (when the
@@ -652,28 +629,26 @@ class DBImpl : public DB {
  Status SwitchMemtable(ColumnFamilyData* cfd, WriteContext* context);

  // Force current memtable contents to be flushed.
-  Status FlushMemTable(ColumnFamilyData* cfd, const FlushOptions& options,
-                       bool writes_stopped = false);
+  Status FlushMemTable(ColumnFamilyData* cfd, const FlushOptions& options);

  // Wait for memtable flushed
  Status WaitForFlushMemTable(ColumnFamilyData* cfd);

 #ifndef ROCKSDB_LITE
-
-  Status CompactFilesImpl(const CompactionOptions& compact_options,
-                          ColumnFamilyData* cfd, Version* version,
-                          const std::vector<std::string>& input_file_names,
-                          const int output_level, int output_path_id,
-                          JobContext* job_context, LogBuffer* log_buffer);
-
-  // Wait for current IngestExternalFile() calls to finish.
+  // Finds the lowest level in the DB that the ingested file can be added to
  // REQUIRES: mutex_ held
-  void WaitForIngestFile();
+  int PickLevelForIngestedFile(ColumnFamilyData* cfd,
+                               const ExternalSstFileInfo& file_info);
+
+  Status CompactFilesImpl(
+      const CompactionOptions& compact_options, ColumnFamilyData* cfd,
+      Version* version, const std::vector<std::string>& input_file_names,
+      const int output_level, int output_path_id, JobContext* job_context,
+      LogBuffer* log_buffer);
+  Status ReadExternalSstFileInfo(ColumnFamilyHandle* column_family,
+                                 const std::string& file_path,
+                                 ExternalSstFileInfo* file_info);

-#else
-  // IngestExternalFile is not supported in ROCKSDB_LITE so this function
-  // will be no-op
-  void WaitForIngestFile() {}
 #endif  // ROCKSDB_LITE

  ColumnFamilyData* GetColumnFamilyDataByName(const std::string& cf_name);
@@ -695,6 +670,11 @@ class DBImpl : public DB {
  Status BackgroundFlush(bool* madeProgress, JobContext* job_context,
                         LogBuffer* log_buffer);

+  // Compare options before and after to see whether flush or compaction is
+  // needed immediately after dynamic option change.
+  bool NeedFlushOrCompaction(const MutableCFOptions& base_options,
+                             const MutableCFOptions& new_options);
+
  void PrintStatistics();

  // dump rocksdb.stats to LOG
@@ -721,10 +701,6 @@ class DBImpl : public DB {

  const Snapshot* GetSnapshotImpl(bool is_write_conflict_boundary);

-  // Persist RocksDB options under the single write thread
-  // REQUIRES: mutex locked
-  Status PersistOptions();
-
  // table_cache_ provides its own synchronization
  std::shared_ptr<Cache> table_cache_;

@@ -736,7 +712,7 @@ class DBImpl : public DB {
  //       same time.
  InstrumentedMutex options_files_mutex_;
  // State below is protected by mutex_
-  mutable InstrumentedMutex mutex_;
+  InstrumentedMutex mutex_;

  std::atomic<bool> shutting_down_;
  // This condition variable is signaled on these conditions:
@@ -747,7 +723,6 @@ class DBImpl : public DB {
  // * whenever bg_flush_scheduled_ or bg_purge_scheduled_ value decreases
  // (i.e. whenever a flush is done, even if it didn't make any progress)
  // * whenever there is an error in background purge, flush or compaction
-  // * whenever num_running_ingest_file_ goes to 0.
  InstrumentedCondVar bg_cv_;
  uint64_t logfile_number_;
  std::deque<uint64_t>
@@ -907,9 +882,6 @@ class DBImpl : public DB {

  // A queue to store filenames of the files to be purged
  std::deque<PurgeFileInfo> purge_queue_;
-
-  // A queue to store log writers to close
-  std::deque<log::Writer*> logs_to_free_queue_;
  int unscheduled_flushes_;
  int unscheduled_compactions_;

@@ -989,9 +961,9 @@ class DBImpl : public DB {
  // The options to access storage files
  const EnvOptions env_options_;

-  // Number of running IngestExternalFile() calls.
+  // A set of compactions that are running right now
  // REQUIRES: mutex held
-  int num_running_ingest_file_;
+  std::unordered_set<Compaction*> running_compactions_;

 #ifndef ROCKSDB_LITE
  WalManager wal_manager_;
@@ -1088,14 +1060,13 @@ class DBImpl : public DB {
  bool ShouldntRunManualCompaction(ManualCompaction* m);
  bool HaveManualCompaction(ColumnFamilyData* cfd);
  bool MCOverlap(ManualCompaction* m, ManualCompaction* m1);
-
-  size_t GetWalPreallocateBlockSize(uint64_t write_buffer_size) const;
 };

+// Sanitize db options.  The caller should delete result.info_log if
+// it is not equal to src.info_log.
 extern Options SanitizeOptions(const std::string& db,
                               const InternalKeyComparator* icmp,
                               const Options& src);
-
 extern DBOptions SanitizeOptions(const std::string& db, const DBOptions& src);

 // Fix user-supplied options to be reasonable
@@ -0,0 +1,419 @@
+//  Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
+//  This source code is licensed under the BSD-style license found in the
+//  LICENSE file in the root directory of this source tree. An additional grant
+//  of patent rights can be found in the PATENTS file in the same directory.
+
+#include "db/db_impl.h"
+
+#ifndef __STDC_FORMAT_MACROS
+#define __STDC_FORMAT_MACROS
+#endif
+
+#include <inttypes.h>
+
+#include "db/builder.h"
+#include "rocksdb/db.h"
+#include "rocksdb/env.h"
+#include "rocksdb/sst_file_writer.h"
+#include "table/table_builder.h"
+#include "util/file_reader_writer.h"
+#include "util/file_util.h"
+#include "util/sync_point.h"
+
+namespace rocksdb {
+
+namespace {
+// RAII Timer
+class StatsTimer {
+ public:
+  explicit StatsTimer(Env* env, uint64_t* counter)
+      : env_(env), counter_(counter), start_micros_(env_->NowMicros()) {}
+  ~StatsTimer() { *counter_ += env_->NowMicros() - start_micros_; }
+
+ private:
+  Env* env_;
+  uint64_t* counter_;
+  uint64_t start_micros_;
+};
+}  // anonymous namespace
+
+#ifndef ROCKSDB_LITE
+
+Status DBImpl::ReadExternalSstFileInfo(ColumnFamilyHandle* column_family,
+                                       const std::string& file_path,
+                                       ExternalSstFileInfo* file_info) {
+  Status status;
+  auto cfh = reinterpret_cast<ColumnFamilyHandleImpl*>(column_family);
+  auto cfd = cfh->cfd();
+
+  file_info->file_path = file_path;
+  status = env_->GetFileSize(file_path, &file_info->file_size);
+  if (!status.ok()) {
+    return status;
+  }
+
+  // Access the file using TableReader to extract
+  // version, number of entries, smallest user key, largest user key
+  std::unique_ptr<RandomAccessFile> sst_file;
+  status = env_->NewRandomAccessFile(file_path, &sst_file, env_options_);
+  if (!status.ok()) {
+    return status;
+  }
+  std::unique_ptr<RandomAccessFileReader> sst_file_reader;
+  sst_file_reader.reset(new RandomAccessFileReader(std::move(sst_file)));
+
+  std::unique_ptr<TableReader> table_reader;
+  status = cfd->ioptions()->table_factory->NewTableReader(
+      TableReaderOptions(*cfd->ioptions(), env_options_,
+                         cfd->internal_comparator()),
+      std::move(sst_file_reader), file_info->file_size, &table_reader);
+  if (!status.ok()) {
+    return status;
+  }
+
+  // Get the external sst file version from table properties
+  const UserCollectedProperties& user_collected_properties =
+      table_reader->GetTableProperties()->user_collected_properties;
+  UserCollectedProperties::const_iterator external_sst_file_version_iter =
+      user_collected_properties.find(ExternalSstFilePropertyNames::kVersion);
+  if (external_sst_file_version_iter == user_collected_properties.end()) {
+    return Status::InvalidArgument("Generated table version not found");
+  }
+
+  file_info->version =
+      DecodeFixed32(external_sst_file_version_iter->second.c_str());
+  if (file_info->version == 1) {
+    // version 1 imply that all sequence numbers in table equal 0
+    file_info->sequence_number = 0;
+  } else {
+    return Status::InvalidArgument("Generated table version is not supported");
+  }
+  // Get number of entries in table
+  file_info->num_entries = table_reader->GetTableProperties()->num_entries;
+
+  ParsedInternalKey key;
+  std::unique_ptr<InternalIterator> iter(
+      table_reader->NewIterator(ReadOptions()));
+
+  // Get first (smallest) key from file
+  iter->SeekToFirst();
+  if (!ParseInternalKey(iter->key(), &key)) {
+    return Status::Corruption("Generated table have corrupted keys");
+  }
+  if (key.sequence != 0) {
+    return Status::Corruption("Generated table have non zero sequence number");
+  }
+  file_info->smallest_key = key.user_key.ToString();
+
+  // Get last (largest) key from file
+  iter->SeekToLast();
+  if (!ParseInternalKey(iter->key(), &key)) {
+    return Status::Corruption("Generated table have corrupted keys");
+  }
+  if (key.sequence != 0) {
+    return Status::Corruption("Generated table have non zero sequence number");
+  }
+  file_info->largest_key = key.user_key.ToString();
+
+  return Status::OK();
+}
+
+Status DBImpl::AddFile(ColumnFamilyHandle* column_family,
+                       const std::vector<std::string>& file_path_list,
+                       bool move_file) {
+  Status status;
+  auto num_files = file_path_list.size();
+  if (num_files == 0) {
+    return Status::InvalidArgument("The list of files is empty");
+  }
+
+  std::vector<ExternalSstFileInfo> file_infos(num_files);
+  std::vector<ExternalSstFileInfo> file_info_list(num_files);
+  for (size_t i = 0; i < num_files; i++) {
+    status = ReadExternalSstFileInfo(column_family, file_path_list[i],
+                                     &file_info_list[i]);
+    if (!status.ok()) {
+      return status;
+    }
+  }
+  return AddFile(column_family, file_info_list, move_file);
+}
+
+Status DBImpl::AddFile(ColumnFamilyHandle* column_family,
+                       const std::vector<ExternalSstFileInfo>& file_info_list,
+                       bool move_file) {
+  Status status;
+  auto cfh = reinterpret_cast<ColumnFamilyHandleImpl*>(column_family);
+  ColumnFamilyData* cfd = cfh->cfd();
+
+  auto num_files = file_info_list.size();
+  if (num_files == 0) {
+    return Status::InvalidArgument("The list of files is empty");
+  }
+
+  // Verify that passed files dont have overlapping ranges
+  if (num_files > 1) {
+    std::vector<const ExternalSstFileInfo*> sorted_file_info_list(num_files);
+    for (size_t i = 0; i < num_files; i++) {
+      sorted_file_info_list[i] = &file_info_list[i];
+    }
+
+    auto* vstorage = cfd->current()->storage_info();
+    std::sort(
+        sorted_file_info_list.begin(), sorted_file_info_list.end(),
+        [&vstorage, &file_info_list](const ExternalSstFileInfo* info1,
+                                     const ExternalSstFileInfo* info2) {
+          return vstorage->InternalComparator()->user_comparator()->Compare(
+                     info1->smallest_key, info2->smallest_key) < 0;
+        });
+
+    for (size_t i = 0; i < num_files - 1; i++) {
+      if (sorted_file_info_list[i]->largest_key >=
+          sorted_file_info_list[i + 1]->smallest_key) {
+        return Status::NotSupported("Cannot add overlapping range among files");
+      }
+    }
+  }
+
+  std::vector<uint64_t> micro_list(num_files, 0);
+  std::vector<FileMetaData> meta_list(num_files);
+  for (size_t i = 0; i < num_files; i++) {
+    StatsTimer t(env_, &micro_list[i]);
+    if (file_info_list[i].num_entries == 0) {
+      return Status::InvalidArgument("File contain no entries");
+    }
+    if (file_info_list[i].version != 1) {
+      return Status::InvalidArgument(
+          "Generated table version is not supported");
+    }
+    // version 1 imply that file have only Put Operations with Sequence Number =
+    // 0
+
+    meta_list[i].smallest =
+        InternalKey(file_info_list[i].smallest_key,
+                    file_info_list[i].sequence_number, ValueType::kTypeValue);
+    meta_list[i].largest =
+        InternalKey(file_info_list[i].largest_key,
+                    file_info_list[i].sequence_number, ValueType::kTypeValue);
+    if (!meta_list[i].smallest.Valid() || !meta_list[i].largest.Valid()) {
+      return Status::Corruption("Generated table have corrupted keys");
+    }
+    meta_list[i].smallest_seqno = file_info_list[i].sequence_number;
+    meta_list[i].largest_seqno = file_info_list[i].sequence_number;
+    if (meta_list[i].smallest_seqno != 0 || meta_list[i].largest_seqno != 0) {
+      return Status::InvalidArgument(
+          "Non zero sequence numbers are not supported");
+    }
+  }
+
+  std::vector<std::list<uint64_t>::iterator> pending_outputs_inserted_elem_list(
+      num_files);
+  // Generate locations for the new tables
+  {
+    InstrumentedMutexLock l(&mutex_);
+    for (size_t i = 0; i < num_files; i++) {
+      StatsTimer t(env_, &micro_list[i]);
+      pending_outputs_inserted_elem_list[i] =
+          CaptureCurrentFileNumberInPendingOutputs();
+      meta_list[i].fd = FileDescriptor(versions_->NewFileNumber(), 0,
+                                       file_info_list[i].file_size);
+    }
+  }
+
+  // Copy/Move external files into DB
+  std::vector<std::string> db_fname_list(num_files);
+  size_t j = 0;
+  for (; j < num_files; j++) {
+    StatsTimer t(env_, &micro_list[j]);
+    db_fname_list[j] =
+        TableFileName(db_options_.db_paths, meta_list[j].fd.GetNumber(),
+                      meta_list[j].fd.GetPathId());
+    if (move_file) {
+      status = env_->LinkFile(file_info_list[j].file_path, db_fname_list[j]);
+      if (status.IsNotSupported()) {
+        // Original file is on a different FS, use copy instead of hard linking
+        status =
+            CopyFile(env_, file_info_list[j].file_path, db_fname_list[j], 0);
+      }
+    } else {
+      status = CopyFile(env_, file_info_list[j].file_path, db_fname_list[j], 0);
+    }
+    TEST_SYNC_POINT("DBImpl::AddFile:FileCopied");
+    if (!status.ok()) {
+      for (size_t i = 0; i < j; i++) {
+        Status s = env_->DeleteFile(db_fname_list[i]);
+        if (!s.ok()) {
+          Log(InfoLogLevel::WARN_LEVEL, db_options_.info_log,
+              "AddFile() clean up for file %s failed : %s",
+              db_fname_list[i].c_str(), s.ToString().c_str());
+        }
+      }
+      return status;
+    }
+  }
+
+  {
+    InstrumentedMutexLock l(&mutex_);
+    const MutableCFOptions mutable_cf_options =
+        *cfd->GetLatestMutableCFOptions();
+
+    WriteThread::Writer w;
+    write_thread_.EnterUnbatched(&w, &mutex_);
+
+    if (!snapshots_.empty()) {
+      // Check that no snapshots are being held
+      status =
+          Status::NotSupported("Cannot add a file while holding snapshots");
+    }
+
+    if (status.ok()) {
+      // Verify that added file key range dont overlap with any keys in DB
+      SuperVersion* sv = cfd->GetSuperVersion()->Ref();
+      Arena arena;
+      ReadOptions ro;
+      ro.total_order_seek = true;
+      ScopedArenaIterator iter(NewInternalIterator(ro, cfd, sv, &arena));
+
+      for (size_t i = 0; i < num_files; i++) {
+        StatsTimer t(env_, &micro_list[i]);
+        InternalKey range_start(file_info_list[i].smallest_key,
+                                kMaxSequenceNumber, kTypeValue);
+        iter->Seek(range_start.Encode());
+        status = iter->status();
+
+        if (status.ok() && iter->Valid()) {
+          ParsedInternalKey seek_result;
+          if (ParseInternalKey(iter->key(), &seek_result)) {
+            auto* vstorage = cfd->current()->storage_info();
+            if (vstorage->InternalComparator()->user_comparator()->Compare(
+                    seek_result.user_key, file_info_list[i].largest_key) <= 0) {
+              status = Status::NotSupported("Cannot add overlapping range");
+              break;
+            }
+          } else {
+            status = Status::Corruption("DB have corrupted keys");
+            break;
+          }
+        }
+      }
+    }
+
+    // The level the file will be ingested into
+    std::vector<int> target_level_list(num_files, 0);
+    if (status.ok()) {
+      // Add files to L0
+      VersionEdit edit;
+      edit.SetColumnFamily(cfd->GetID());
+      for (size_t i = 0; i < num_files; i++) {
+        StatsTimer t(env_, &micro_list[i]);
+        // Add file to the lowest possible level
+        target_level_list[i] = PickLevelForIngestedFile(cfd, file_info_list[i]);
+        edit.AddFile(target_level_list[i], meta_list[i].fd.GetNumber(),
+                     meta_list[i].fd.GetPathId(), meta_list[i].fd.GetFileSize(),
+                     meta_list[i].smallest, meta_list[i].largest,
+                     meta_list[i].smallest_seqno, meta_list[i].largest_seqno,
+                     meta_list[i].marked_for_compaction);
+      }
+      status = versions_->LogAndApply(cfd, mutable_cf_options, &edit, &mutex_,
+                                      directories_.GetDbDir());
+    }
+    write_thread_.ExitUnbatched(&w);
+
+    if (status.ok()) {
+      delete InstallSuperVersionAndScheduleWork(cfd, nullptr,
+                                                mutable_cf_options);
+    }
+    for (size_t i = 0; i < num_files; i++) {
+      // Update internal stats
+      InternalStats::CompactionStats stats(1);
+      stats.micros = micro_list[i];
+      stats.bytes_written = meta_list[i].fd.GetFileSize();
+      stats.num_output_files = 1;
+      cfd->internal_stats()->AddCompactionStats(target_level_list[i], stats);
+      cfd->internal_stats()->AddCFStats(InternalStats::BYTES_INGESTED_ADD_FILE,
+                                        meta_list[i].fd.GetFileSize());
+      ReleaseFileNumberFromPendingOutputs(
+          pending_outputs_inserted_elem_list[i]);
+    }
+  }
+
+  if (!status.ok()) {
+    // We failed to add the files to the database
+    for (size_t i = 0; i < num_files; i++) {
+      Status s = env_->DeleteFile(db_fname_list[i]);
+      if (!s.ok()) {
+        Log(InfoLogLevel::WARN_LEVEL, db_options_.info_log,
+            "AddFile() clean up for file %s failed : %s",
+            db_fname_list[i].c_str(), s.ToString().c_str());
+      }
+    }
+  } else if (status.ok() && move_file) {
+    // The files were moved and added successfully, remove original file links
+    for (size_t i = 0; i < num_files; i++) {
+      Status s = env_->DeleteFile(file_info_list[i].file_path);
+      if (!s.ok()) {
+        Log(InfoLogLevel::WARN_LEVEL, db_options_.info_log,
+            "%s was added to DB successfully but failed to remove original "
+            "file "
+            "link : %s",
+            file_info_list[i].file_path.c_str(), s.ToString().c_str());
+      }
+    }
+  }
+  return status;
+}
+
+// Finds the lowest level in the DB that the ingested file can be added to
+int DBImpl::PickLevelForIngestedFile(ColumnFamilyData* cfd,
+                                     const ExternalSstFileInfo& file_info) {
+  mutex_.AssertHeld();
+
+  int target_level = 0;
+  auto* vstorage = cfd->current()->storage_info();
+  auto* ucmp = vstorage->InternalComparator()->user_comparator();
+
+  Slice file_smallest_user_key(file_info.smallest_key);
+  Slice file_largest_user_key(file_info.largest_key);
+
+  for (int lvl = cfd->NumberLevels() - 1; lvl >= vstorage->base_level();
+       lvl--) {
+    if (vstorage->OverlapInLevel(lvl, &file_smallest_user_key,
+                                 &file_largest_user_key) == false) {
+      // Make sure that the file dont overlap with the output of any
+      // compaction running right now
+      Slice compaction_smallest_user_key;
+      Slice compaction_largest_user_key;
+      bool overlap_with_compaction_output = false;
+      for (Compaction* c : running_compactions_) {
+        if (c->column_family_data()->GetID() != cfd->GetID() ||
+            c->output_level() != lvl) {
+          continue;
+        }
+
+        compaction_smallest_user_key = c->GetSmallestUserKey();
+        compaction_largest_user_key = c->GetLargestUserKey();
+
+        if (ucmp->Compare(file_smallest_user_key,
+                          compaction_largest_user_key) <= 0 &&
+            ucmp->Compare(file_largest_user_key,
+                          compaction_smallest_user_key) >= 0) {
+          overlap_with_compaction_output = true;
+          break;
+        }
+      }
+
+      if (overlap_with_compaction_output == false) {
+        // Level lvl is the lowest level that dont have any files with key
+        // range overlapping with our file key range and no compactions
+        // planning to add overlapping files in it.
+        target_level = lvl;
+        break;
+      }
+    }
+  }
+
+  return target_level;
+}
+#endif  // ROCKSDB_LITE
+
+}  // namespace rocksdb
@@ -178,10 +178,5 @@ Status DBImpl::TEST_GetLatestMutableCFOptions(
  return Status::OK();
 }

-int DBImpl::TEST_BGCompactionsAllowed() const {
-  InstrumentedMutexLock l(&mutex_);
-  return BGCompactionsAllowed();
-}
-
 }  // namespace rocksdb
 #endif  // NDEBUG
@@ -49,8 +49,7 @@ Status DBImpl::SuggestCompactRange(ColumnFamilyHandle* column_family,
    }
    // Since we have some more files to compact, we should also recompute
    // compaction score
-    vstorage->ComputeCompactionScore(*cfd->ioptions(),
-                                     *cfd->GetLatestMutableCFOptions());
+    vstorage->ComputeCompactionScore(*cfd->GetLatestMutableCFOptions());
    SchedulePendingCompaction(cfd);
    MaybeScheduleFlushOrCompaction();
  }
@@ -61,7 +60,7 @@ Status DBImpl::PromoteL0(ColumnFamilyHandle* column_family, int target_level) {
  assert(column_family);

  if (target_level < 1) {
-    Log(InfoLogLevel::INFO_LEVEL, immutable_db_options_.info_log,
+    Log(InfoLogLevel::INFO_LEVEL, db_options_.info_log,
        "PromoteL0 FAILED. Invalid target level %d\n", target_level);
    return Status::InvalidArgument("Invalid target level");
  }
@@ -75,7 +74,7 @@ Status DBImpl::PromoteL0(ColumnFamilyHandle* column_family, int target_level) {
    const auto* vstorage = cfd->current()->storage_info();

    if (target_level >= vstorage->num_levels()) {
-      Log(InfoLogLevel::INFO_LEVEL, immutable_db_options_.info_log,
+      Log(InfoLogLevel::INFO_LEVEL, db_options_.info_log,
          "PromoteL0 FAILED. Target level %d does not exist\n", target_level);
      job_context.Clean();
      return Status::InvalidArgument("Target level does not exist");
@@ -94,7 +93,7 @@ Status DBImpl::PromoteL0(ColumnFamilyHandle* column_family, int target_level) {
    for (size_t i = 0; i < l0_files.size(); ++i) {
      auto f = l0_files[i];
      if (f->being_compacted) {
-        Log(InfoLogLevel::INFO_LEVEL, immutable_db_options_.info_log,
+        Log(InfoLogLevel::INFO_LEVEL, db_options_.info_log,
            "PromoteL0 FAILED. File %" PRIu64 " being compacted\n",
            f->fd.GetNumber());
        job_context.Clean();
@@ -104,7 +103,7 @@ Status DBImpl::PromoteL0(ColumnFamilyHandle* column_family, int target_level) {
      if (i == 0) continue;
      auto prev_f = l0_files[i - 1];
      if (icmp->Compare(prev_f->largest, f->smallest) >= 0) {
-        Log(InfoLogLevel::INFO_LEVEL, immutable_db_options_.info_log,
+        Log(InfoLogLevel::INFO_LEVEL, db_options_.info_log,
            "PromoteL0 FAILED. Files %" PRIu64 " and %" PRIu64
            " have overlapping ranges\n",
            prev_f->fd.GetNumber(), f->fd.GetNumber());
@@ -116,7 +115,7 @@ Status DBImpl::PromoteL0(ColumnFamilyHandle* column_family, int target_level) {
    // Check that all levels up to target_level are empty.
    for (int level = 1; level <= target_level; ++level) {
      if (vstorage->NumLevelFiles(level) > 0) {
-        Log(InfoLogLevel::INFO_LEVEL, immutable_db_options_.info_log,
+        Log(InfoLogLevel::INFO_LEVEL, db_options_.info_log,
            "PromoteL0 FAILED. Level %d not empty\n", level);
        job_context.Clean();
        return Status::InvalidArgument(
@@ -141,7 +140,7 @@ Status DBImpl::PromoteL0(ColumnFamilyHandle* column_family, int target_level) {
          cfd, &job_context, *cfd->GetLatestMutableCFOptions());
    }
  }  // lock released here
-  LogFlush(immutable_db_options_.info_log);
+  LogFlush(db_options_.info_log);
  job_context.Clean();

  return status;
@@ -19,9 +19,8 @@ namespace rocksdb {
 DBImplReadOnly::DBImplReadOnly(const DBOptions& db_options,
                               const std::string& dbname)
    : DBImpl(db_options, dbname) {
-  Log(INFO_LEVEL, immutable_db_options_.info_log,
-      "Opening the db in read only mode");
-  LogFlush(immutable_db_options_.info_log);
+  Log(INFO_LEVEL, db_options_.info_log, "Opening the db in read only mode");
+  LogFlush(db_options_.info_log);
 }

 DBImplReadOnly::~DBImplReadOnly() {
@@ -16,12 +16,12 @@
 #include <vector>

 #include "db/filename.h"
+#include "rocksdb/options.h"
 #include "rocksdb/env.h"

 namespace rocksdb {

-void DumpDBFileSummary(const ImmutableDBOptions& options,
-                       const std::string& dbname) {
+void DumpDBFileSummary(const DBOptions& options, const std::string& dbname) {
  if (options.info_log == nullptr) {
    return;
  }
@@ -6,9 +6,8 @@

 #include <string>

-#include "util/db_options.h"
+#include "rocksdb/options.h"

 namespace rocksdb {
-void DumpDBFileSummary(const ImmutableDBOptions& options,
-                       const std::string& dbname);
+void DumpDBFileSummary(const DBOptions& options, const std::string& dbname);
 }  // namespace rocksdb
@@ -111,7 +111,6 @@ TEST_F(DBIOFailureTest, NoSpaceCompactRange) {
    Status s = dbfull()->TEST_CompactRange(0, nullptr, nullptr, nullptr,
                                           true /* disallow trivial move */);
    ASSERT_TRUE(s.IsIOError());
-    ASSERT_TRUE(s.IsNoSpace());

    env_->no_space_.store(false, std::memory_order_release);
  } while (ChangeCompactOptions());
@@ -105,8 +105,7 @@ class DBIter: public Iterator {
         InternalIterator* iter, SequenceNumber s, bool arena_mode,
         uint64_t max_sequential_skip_in_iterations, uint64_t version_number,
         const Slice* iterate_upper_bound = nullptr,
-         bool prefix_same_as_start = false, bool pin_data = false,
-         bool total_order_seek = false)
+         bool prefix_same_as_start = false, bool pin_data = false)
      : arena_mode_(arena_mode),
        env_(env),
        logger_(ioptions.info_log),
@@ -121,8 +120,7 @@ class DBIter: public Iterator {
        version_number_(version_number),
        iterate_upper_bound_(iterate_upper_bound),
        prefix_same_as_start_(prefix_same_as_start),
-        pin_thru_lifetime_(pin_data),
-        total_order_seek_(total_order_seek) {
+        pin_thru_lifetime_(pin_data) {
    RecordTick(statistics_, NO_ITERATORS);
    prefix_extractor_ = ioptions.prefix_extractor;
    max_skip_ = max_sequential_skip_in_iterations;
@@ -135,9 +133,7 @@ class DBIter: public Iterator {
  }
  virtual ~DBIter() {
    // Release pinned data if any
-    if (pinned_iters_mgr_.PinningEnabled()) {
-      pinned_iters_mgr_.ReleasePinnedData();
-    }
+    pinned_iters_mgr_.ReleasePinnedIterators();
    RecordTick(statistics_, NO_ITERATORS, -1);
    local_stats_.BumpGlobalStatistics(statistics_);
    if (!arena_mode_) {
@@ -159,9 +155,7 @@ class DBIter: public Iterator {
  virtual Slice value() const override {
    assert(valid_);
    if (current_entry_is_merged_) {
-      // If pinned_value_ is set then the result of merge operator is one of
-      // the merge operands and we should return it.
-      return pinned_value_.data() ? pinned_value_ : saved_value_;
+      return saved_value_;
    } else if (direction_ == kReverse) {
      return pinned_value_;
    } else {
@@ -201,12 +195,10 @@ class DBIter: public Iterator {
  virtual void Next() override;
  virtual void Prev() override;
  virtual void Seek(const Slice& target) override;
-  virtual void SeekForPrev(const Slice& target) override;
  virtual void SeekToFirst() override;
  virtual void SeekToLast() override;

 private:
-  void ReverseToForward();
  void ReverseToBackward();
  void PrevInternal();
  void FindParseableKey(ParsedInternalKey* ikey, Direction direction);
@@ -229,8 +221,8 @@ class DBIter: public Iterator {

  // Release blocks pinned by TempPinData()
  void ReleaseTempPinnedData() {
-    if (!pin_thru_lifetime_ && pinned_iters_mgr_.PinningEnabled()) {
-      pinned_iters_mgr_.ReleasePinnedData();
+    if (!pin_thru_lifetime_) {
+      pinned_iters_mgr_.ReleasePinnedIterators();
    }
  }

@@ -259,7 +251,6 @@ class DBIter: public Iterator {
  Direction direction_;
  bool valid_;
  bool current_entry_is_merged_;
-  // for prefix seek mode to support prev()
  Statistics* statistics_;
  uint64_t max_skip_;
  uint64_t version_number_;
@@ -270,7 +261,6 @@ class DBIter: public Iterator {
  // Means that we will pin all data blocks we read as long the Iterator
  // is not deleted, will be true if ReadOptions::pin_data is true
  const bool pin_thru_lifetime_;
-  const bool total_order_seek_;
  // List of operands for merge operator.
  MergeContext merge_context_;
  LocalStatistics local_stats_;
@@ -296,10 +286,14 @@ inline bool DBIter::ParseKey(ParsedInternalKey* ikey) {
 void DBIter::Next() {
  assert(valid_);

-  // Release temporarily pinned blocks from last operation
-  ReleaseTempPinnedData();
  if (direction_ == kReverse) {
-    ReverseToForward();
+    // We only pin blocks when doing kReverse
+    ReleaseTempPinnedData();
+    FindNextUserKey();
+    direction_ = kForward;
+    if (!iter_->Valid()) {
+      iter_->SeekToFirst();
+    }
  } else if (iter_->Valid() && !current_entry_is_merged_) {
    // If the current value is not a merge, the iter position is the
    // current key, which is already returned. We can safely issue a
@@ -439,12 +433,9 @@ void DBIter::MergeValuesNewToOld() {
    return;
  }

-  // Temporarily pin the blocks that hold merge operands
-  TempPinData();
  merge_context_.Clear();
  // Start the merge process by pushing the first operand
-  merge_context_.PushOperand(iter_->value(),
-                             iter_->IsValuePinned() /* operand_pinned */);
+  merge_context_.PushOperand(iter_->value());

  ParsedInternalKey ikey;
  for (iter_->Next(); iter_->Valid(); iter_->Next()) {
@@ -468,15 +459,15 @@ void DBIter::MergeValuesNewToOld() {
      const Slice val = iter_->value();
      MergeHelper::TimedFullMerge(merge_operator_, ikey.user_key, &val,
                                  merge_context_.GetOperands(), &saved_value_,
-                                  logger_, statistics_, env_, &pinned_value_);
+                                  logger_, statistics_, env_);
      // iter_ is positioned after put
      iter_->Next();
      return;
    } else if (kTypeMerge == ikey.type) {
      // hit a merge, add the value as an operand and run associative merge.
      // when complete, add result to operands and continue.
-      merge_context_.PushOperand(iter_->value(),
-                                 iter_->IsValuePinned() /* operand_pinned */);
+      const Slice& val = iter_->value();
+      merge_context_.PushOperand(val);
    } else {
      assert(false);
    }
@@ -488,15 +479,15 @@ void DBIter::MergeValuesNewToOld() {
  // client can differentiate this scenario and do things accordingly.
  MergeHelper::TimedFullMerge(merge_operator_, saved_key_.GetKey(), nullptr,
                              merge_context_.GetOperands(), &saved_value_,
-                              logger_, statistics_, env_, &pinned_value_);
+                              logger_, statistics_, env_);
 }

 void DBIter::Prev() {
  assert(valid_);
-  ReleaseTempPinnedData();
  if (direction_ == kForward) {
    ReverseToBackward();
  }
+  ReleaseTempPinnedData();
  PrevInternal();
  if (statistics_ != nullptr) {
    local_stats_.prev_count_++;
@@ -505,29 +496,14 @@ void DBIter::Prev() {
      local_stats_.bytes_read_ += (key().size() + value().size());
    }
  }
-}
-
-void DBIter::ReverseToForward() {
-  if (prefix_extractor_ != nullptr && !total_order_seek_) {
-    IterKey last_key;
-    last_key.SetInternalKey(ParsedInternalKey(
-        saved_key_.GetKey(), kMaxSequenceNumber, kValueTypeForSeek));
-    iter_->Seek(last_key.GetKey());
-  }
-  FindNextUserKey();
-  direction_ = kForward;
-  if (!iter_->Valid()) {
-    iter_->SeekToFirst();
+  if (valid_ && prefix_extractor_ && prefix_same_as_start_ &&
+      prefix_extractor_->Transform(saved_key_.GetKey())
+              .compare(prefix_start_key_) != 0) {
+    valid_ = false;
  }
 }

 void DBIter::ReverseToBackward() {
-  if (prefix_extractor_ != nullptr && !total_order_seek_) {
-    IterKey last_key;
-    last_key.SetInternalKey(
-        ParsedInternalKey(saved_key_.GetKey(), 0, kValueTypeForSeekForPrev));
-    iter_->SeekForPrev(last_key.GetKey());
-  }
  if (current_entry_is_merged_) {
    // Not placed in the same key. Need to call Prev() until finding the
    // previous key.
@@ -574,11 +550,6 @@ void DBIter::PrevInternal() {
      if (user_comparator_->Equal(ikey.user_key, saved_key_.GetKey())) {
        FindPrevUserKey();
      }
-      if (valid_ && prefix_extractor_ && prefix_same_as_start_ &&
-          prefix_extractor_->Transform(saved_key_.GetKey())
-                  .compare(prefix_start_key_) != 0) {
-        valid_ = false;
-      }
      return;
    }
    if (!iter_->Valid()) {
@@ -590,7 +561,6 @@ void DBIter::PrevInternal() {
    }
  }
  // We haven't found any key - iterator is not valid
-  // Or the prefix is different than start prefix
  assert(!iter_->Valid());
  valid_ = false;
 }
@@ -610,9 +580,6 @@ bool DBIter::FindValueForCurrentKey() {
  ParsedInternalKey ikey;
  FindParseableKey(&ikey, kReverse);

-  // Temporarily pin blocks that hold (merge operands / the value)
-  ReleaseTempPinnedData();
-  TempPinData();
  size_t num_skipped = 0;
  while (iter_->Valid() && ikey.sequence <= sequence_ &&
         user_comparator_->Equal(ikey.user_key, saved_key_.GetKey())) {
@@ -625,7 +592,8 @@ bool DBIter::FindValueForCurrentKey() {
    switch (last_key_entry_type) {
      case kTypeValue:
        merge_context_.Clear();
-        assert(iter_->IsValuePinned());
+        ReleaseTempPinnedData();
+        TempPinData();
        pinned_value_ = iter_->value();
        last_not_merge_type = kTypeValue;
        break;
@@ -637,8 +605,7 @@ bool DBIter::FindValueForCurrentKey() {
        break;
      case kTypeMerge:
        assert(merge_operator_ != nullptr);
-        merge_context_.PushOperandBack(
-            iter_->value(), iter_->IsValuePinned() /* operand_pinned */);
+        merge_context_.PushOperandBack(iter_->value());
        break;
      default:
        assert(false);
@@ -658,18 +625,16 @@ bool DBIter::FindValueForCurrentKey() {
      return false;
    case kTypeMerge:
      current_entry_is_merged_ = true;
-      if (last_not_merge_type == kTypeDeletion ||
-          last_not_merge_type == kTypeSingleDeletion) {
+      if (last_not_merge_type == kTypeDeletion) {
        MergeHelper::TimedFullMerge(merge_operator_, saved_key_.GetKey(),
                                    nullptr, merge_context_.GetOperands(),
-                                    &saved_value_, logger_, statistics_, env_,
-                                    &pinned_value_);
+                                    &saved_value_, logger_, statistics_, env_);
      } else {
        assert(last_not_merge_type == kTypeValue);
        MergeHelper::TimedFullMerge(merge_operator_, saved_key_.GetKey(),
                                    &pinned_value_,
                                    merge_context_.GetOperands(), &saved_value_,
-                                    logger_, statistics_, env_, &pinned_value_);
+                                    logger_, statistics_, env_);
      }
      break;
    case kTypeValue:
@@ -686,9 +651,6 @@ bool DBIter::FindValueForCurrentKey() {
 // This function is used in FindValueForCurrentKey.
 // We use Seek() function instead of Prev() to find necessary value
 bool DBIter::FindValueForCurrentKeyUsingSeek() {
-  // FindValueForCurrentKey will enable pinning before calling
-  // FindValueForCurrentKeyUsingSeek()
-  assert(pinned_iters_mgr_.PinningEnabled());
  std::string last_key;
  AppendInternalKey(&last_key, ParsedInternalKey(saved_key_.GetKey(), sequence_,
                                                 kValueTypeForSeek));
@@ -702,7 +664,8 @@ bool DBIter::FindValueForCurrentKeyUsingSeek() {
  if (ikey.type == kTypeValue || ikey.type == kTypeDeletion ||
      ikey.type == kTypeSingleDeletion) {
    if (ikey.type == kTypeValue) {
-      assert(iter_->IsValuePinned());
+      ReleaseTempPinnedData();
+      TempPinData();
      pinned_value_ = iter_->value();
      valid_ = true;
      return true;
@@ -718,8 +681,7 @@ bool DBIter::FindValueForCurrentKeyUsingSeek() {
  while (iter_->Valid() &&
         user_comparator_->Equal(ikey.user_key, saved_key_.GetKey()) &&
         ikey.type == kTypeMerge) {
-    merge_context_.PushOperand(iter_->value(),
-                               iter_->IsValuePinned() /* operand_pinned */);
+    merge_context_.PushOperand(iter_->value());
    iter_->Next();
    FindParseableKey(&ikey, kForward);
  }
@@ -729,7 +691,7 @@ bool DBIter::FindValueForCurrentKeyUsingSeek() {
      ikey.type == kTypeDeletion || ikey.type == kTypeSingleDeletion) {
    MergeHelper::TimedFullMerge(merge_operator_, saved_key_.GetKey(), nullptr,
                                merge_context_.GetOperands(), &saved_value_,
-                                logger_, statistics_, env_, &pinned_value_);
+                                logger_, statistics_, env_);
    // Make iter_ valid and point to saved_key_
    if (!iter_->Valid() ||
        !user_comparator_->Equal(ikey.user_key, saved_key_.GetKey())) {
@@ -743,7 +705,7 @@ bool DBIter::FindValueForCurrentKeyUsingSeek() {
  const Slice& val = iter_->value();
  MergeHelper::TimedFullMerge(merge_operator_, saved_key_.GetKey(), &val,
                              merge_context_.GetOperands(), &saved_value_,
-                              logger_, statistics_, env_, &pinned_value_);
+                              logger_, statistics_, env_);
  valid_ = true;
  return true;
 }
@@ -816,6 +778,7 @@ void DBIter::Seek(const Slice& target) {
    PERF_TIMER_GUARD(seek_internal_seek_time);
    iter_->Seek(saved_key_.GetKey());
  }
+
  RecordTick(statistics_, NUMBER_DB_SEEK);
  if (iter_->Valid()) {
    if (prefix_extractor_ && prefix_same_as_start_) {
@@ -836,46 +799,6 @@ void DBIter::Seek(const Slice& target) {
  } else {
    valid_ = false;
  }
-
-  if (valid_ && prefix_extractor_ && prefix_same_as_start_) {
-    prefix_start_buf_.SetKey(prefix_start_key_);
-    prefix_start_key_ = prefix_start_buf_.GetKey();
-  }
-}
-
-void DBIter::SeekForPrev(const Slice& target) {
-  StopWatch sw(env_, statistics_, DB_SEEK);
-  ReleaseTempPinnedData();
-  saved_key_.Clear();
-  // now saved_key is used to store internal key.
-  saved_key_.SetInternalKey(target, 0 /* sequence_number */,
-                            kValueTypeForSeekForPrev);
-
-  {
-    PERF_TIMER_GUARD(seek_internal_seek_time);
-    iter_->SeekForPrev(saved_key_.GetKey());
-  }
-
-  RecordTick(statistics_, NUMBER_DB_SEEK);
-  if (iter_->Valid()) {
-    if (prefix_extractor_ && prefix_same_as_start_) {
-      prefix_start_key_ = prefix_extractor_->Transform(target);
-    }
-    direction_ = kReverse;
-    ClearSavedValue();
-    PrevInternal();
-    if (!valid_) {
-      prefix_start_key_.clear();
-    }
-    if (statistics_ != nullptr) {
-      if (valid_) {
-        RecordTick(statistics_, NUMBER_DB_SEEK_FOUND);
-        RecordTick(statistics_, ITER_BYTES_READ, key().size() + value().size());
-      }
-    }
-  } else {
-    valid_ = false;
-  }
  if (valid_ && prefix_extractor_ && prefix_same_as_start_) {
    prefix_start_buf_.SetKey(prefix_start_key_);
    prefix_start_key_ = prefix_start_buf_.GetKey();
@@ -933,15 +856,25 @@ void DBIter::SeekToLast() {
  // it will seek to the last key before the
  // ReadOptions.iterate_upper_bound
  if (iter_->Valid() && iterate_upper_bound_ != nullptr) {
-    SeekForPrev(*iterate_upper_bound_);
-    if (!Valid()) {
-      return;
-    } else if (user_comparator_->Equal(*iterate_upper_bound_, key())) {
-      Prev();
+    saved_key_.SetKey(*iterate_upper_bound_, false /* copy */);
+    std::string last_key;
+    AppendInternalKey(&last_key,
+                      ParsedInternalKey(saved_key_.GetKey(), kMaxSequenceNumber,
+                                        kValueTypeForSeek));
+
+    iter_->Seek(last_key);
+
+    if (!iter_->Valid()) {
+      iter_->SeekToLast();
+    } else {
+      iter_->Prev();
+      if (!iter_->Valid()) {
+        valid_ = false;
+        return;
+      }
    }
-  } else {
-    PrevInternal();
  }
+  PrevInternal();
  if (statistics_ != nullptr) {
    RecordTick(statistics_, NUMBER_DB_SEEK);
    if (valid_) {
@@ -955,16 +888,18 @@ void DBIter::SeekToLast() {
  }
 }

-Iterator* NewDBIterator(
-    Env* env, const ImmutableCFOptions& ioptions,
-    const Comparator* user_key_comparator, InternalIterator* internal_iter,
-    const SequenceNumber& sequence, uint64_t max_sequential_skip_in_iterations,
-    uint64_t version_number, const Slice* iterate_upper_bound,
-    bool prefix_same_as_start, bool pin_data, bool total_order_seek) {
-  DBIter* db_iter = new DBIter(
-      env, ioptions, user_key_comparator, internal_iter, sequence, false,
-      max_sequential_skip_in_iterations, version_number, iterate_upper_bound,
-      prefix_same_as_start, pin_data, total_order_seek);
+Iterator* NewDBIterator(Env* env, const ImmutableCFOptions& ioptions,
+                        const Comparator* user_key_comparator,
+                        InternalIterator* internal_iter,
+                        const SequenceNumber& sequence,
+                        uint64_t max_sequential_skip_in_iterations,
+                        uint64_t version_number,
+                        const Slice* iterate_upper_bound,
+                        bool prefix_same_as_start, bool pin_data) {
+  DBIter* db_iter =
+      new DBIter(env, ioptions, user_key_comparator, internal_iter, sequence,
+                 false, max_sequential_skip_in_iterations, version_number,
+                 iterate_upper_bound, prefix_same_as_start, pin_data);
  return db_iter;
 }

@@ -982,9 +917,6 @@ inline void ArenaWrappedDBIter::SeekToLast() { db_iter_->SeekToLast(); }
 inline void ArenaWrappedDBIter::Seek(const Slice& target) {
  db_iter_->Seek(target);
 }
-inline void ArenaWrappedDBIter::SeekForPrev(const Slice& target) {
-  db_iter_->SeekForPrev(target);
-}
 inline void ArenaWrappedDBIter::Next() { db_iter_->Next(); }
 inline void ArenaWrappedDBIter::Prev() { db_iter_->Prev(); }
 inline Slice ArenaWrappedDBIter::key() const { return db_iter_->key(); }
@@ -1003,15 +935,15 @@ ArenaWrappedDBIter* NewArenaWrappedDbIterator(
    Env* env, const ImmutableCFOptions& ioptions,
    const Comparator* user_key_comparator, const SequenceNumber& sequence,
    uint64_t max_sequential_skip_in_iterations, uint64_t version_number,
-    const Slice* iterate_upper_bound, bool prefix_same_as_start, bool pin_data,
-    bool total_order_seek) {
+    const Slice* iterate_upper_bound, bool prefix_same_as_start,
+    bool pin_data) {
  ArenaWrappedDBIter* iter = new ArenaWrappedDBIter();
  Arena* arena = iter->GetArena();
  auto mem = arena->AllocateAligned(sizeof(DBIter));
-  DBIter* db_iter = new (mem) DBIter(
-      env, ioptions, user_key_comparator, nullptr, sequence, true,
-      max_sequential_skip_in_iterations, version_number, iterate_upper_bound,
-      prefix_same_as_start, pin_data, total_order_seek);
+  DBIter* db_iter =
+      new (mem) DBIter(env, ioptions, user_key_comparator, nullptr, sequence,
+                       true, max_sequential_skip_in_iterations, version_number,
+                       iterate_upper_bound, prefix_same_as_start, pin_data);

  iter->SetDBIter(db_iter);

@@ -10,12 +10,11 @@
 #pragma once
 #include <stdint.h>
 #include <string>
-#include "db/dbformat.h"
 #include "rocksdb/db.h"
 #include "rocksdb/iterator.h"
+#include "db/dbformat.h"
 #include "util/arena.h"
 #include "util/autovector.h"
-#include "util/cf_options.h"

 namespace rocksdb {

@@ -31,8 +30,7 @@ extern Iterator* NewDBIterator(
    const Comparator* user_key_comparator, InternalIterator* internal_iter,
    const SequenceNumber& sequence, uint64_t max_sequential_skip_in_iterations,
    uint64_t version_number, const Slice* iterate_upper_bound = nullptr,
-    bool prefix_same_as_start = false, bool pin_data = false,
-    bool total_order_seek = false);
+    bool prefix_same_as_start = false, bool pin_data = false);

 // A wrapper iterator which wraps DB Iterator and the arena, with which the DB
 // iterator is supposed be allocated. This class is used as an entry point of
@@ -58,7 +56,6 @@ class ArenaWrappedDBIter : public Iterator {
  virtual void SeekToFirst() override;
  virtual void SeekToLast() override;
  virtual void Seek(const Slice& target) override;
-  virtual void SeekForPrev(const Slice& target) override;
  virtual void Next() override;
  virtual void Prev() override;
  virtual Slice key() const override;
@@ -79,7 +76,6 @@ extern ArenaWrappedDBIter* NewArenaWrappedDbIterator(
    const Comparator* user_key_comparator, const SequenceNumber& sequence,
    uint64_t max_sequential_skip_in_iterations, uint64_t version_number,
    const Slice* iterate_upper_bound = nullptr,
-    bool prefix_same_as_start = false, bool pin_data = false,
-    bool total_order_seek = false);
+    bool prefix_same_as_start = false, bool pin_data = false);

 }  // namespace rocksdb
@@ -117,11 +117,6 @@ class TestIterator : public InternalIterator {
    }
  }

-  virtual void SeekForPrev(const Slice& target) override {
-    assert(initialized_);
-    SeekForPrevImpl(target, &cmp);
-  }
-
  virtual void Next() override {
    assert(initialized_);
    if (data_.empty() || (iter_ == data_.size() - 1)) {
@@ -155,9 +150,6 @@ class TestIterator : public InternalIterator {
    return Status::OK();
  }

-  virtual bool IsKeyPinned() const override { return true; }
-  virtual bool IsValuePinned() const override { return true; }
-
 private:
  bool initialized_;
  bool valid_;
@@ -357,7 +349,7 @@ TEST_F(DBIteratorTest, DBIteratorPrevNext) {
    db_iter->SeekToLast();

    ASSERT_TRUE(db_iter->Valid());
-    ASSERT_EQ(static_cast<int>(perf_context.internal_key_skipped_count), 7);
+    ASSERT_EQ(static_cast<int>(perf_context.internal_key_skipped_count), 1);
    ASSERT_EQ(db_iter->key().ToString(), "b");

    SetPerfLevel(kDisable);
@@ -480,7 +472,7 @@ TEST_F(DBIteratorTest, DBIteratorPrevNext) {
    db_iter->SeekToLast();

    ASSERT_TRUE(db_iter->Valid());
-    ASSERT_EQ(static_cast<int>(perf_context.internal_delete_skipped_count), 1);
+    ASSERT_EQ(static_cast<int>(perf_context.internal_delete_skipped_count), 0);
    ASSERT_EQ(db_iter->key().ToString(), "b");

    SetPerfLevel(kDisable);
@@ -1129,26 +1121,6 @@ TEST_F(DBIteratorTest, DBIterator5) {
    db_iter->Prev();
    ASSERT_TRUE(!db_iter->Valid());
  }
-
-  {
-    // put, singledelete, merge
-    TestIterator* internal_iter = new TestIterator(BytewiseComparator());
-    internal_iter->AddPut("a", "val_a");
-    internal_iter->AddSingleDeletion("a");
-    internal_iter->AddMerge("a", "merge_1");
-    internal_iter->AddMerge("a", "merge_2");
-    internal_iter->AddPut("b", "val_b");
-    internal_iter->Finish();
-    std::unique_ptr<Iterator> db_iter(NewDBIterator(
-        env_, ImmutableCFOptions(options), BytewiseComparator(), internal_iter,
-        10, options.max_sequential_skip_in_iterations, 0));
-    db_iter->Seek("b");
-    ASSERT_TRUE(db_iter->Valid());
-    ASSERT_EQ(db_iter->key().ToString(), "b");
-    db_iter->Prev();
-    ASSERT_TRUE(db_iter->Valid());
-    ASSERT_EQ(db_iter->key().ToString(), "a");
-  }
 }

 TEST_F(DBIteratorTest, DBIterator6) {
@@ -1751,15 +1723,6 @@ TEST_F(DBIteratorTest, DBIterator9) {
    ASSERT_EQ(db_iter->key().ToString(), "a");
    ASSERT_EQ(db_iter->value().ToString(), "merge_1,merge_2");

-    db_iter->SeekForPrev("b");
-    ASSERT_TRUE(db_iter->Valid());
-    ASSERT_EQ(db_iter->key().ToString(), "b");
-    ASSERT_EQ(db_iter->value().ToString(), "merge_3,merge_4");
-    db_iter->Next();
-    ASSERT_TRUE(db_iter->Valid());
-    ASSERT_EQ(db_iter->key().ToString(), "d");
-    ASSERT_EQ(db_iter->value().ToString(), "merge_5,merge_6");
-
    db_iter->Seek("c");
    ASSERT_TRUE(db_iter->Valid());
    ASSERT_EQ(db_iter->key().ToString(), "d");
@@ -1768,15 +1731,6 @@ TEST_F(DBIteratorTest, DBIterator9) {
    ASSERT_TRUE(db_iter->Valid());
    ASSERT_EQ(db_iter->key().ToString(), "b");
    ASSERT_EQ(db_iter->value().ToString(), "merge_3,merge_4");
-
-    db_iter->SeekForPrev("c");
-    ASSERT_TRUE(db_iter->Valid());
-    ASSERT_EQ(db_iter->key().ToString(), "b");
-    ASSERT_EQ(db_iter->value().ToString(), "merge_3,merge_4");
-    db_iter->Next();
-    ASSERT_TRUE(db_iter->Valid());
-    ASSERT_EQ(db_iter->key().ToString(), "d");
-    ASSERT_EQ(db_iter->value().ToString(), "merge_5,merge_6");
  }
 }

@@ -1807,18 +1761,6 @@ TEST_F(DBIteratorTest, DBIterator10) {
  ASSERT_TRUE(db_iter->Valid());
  ASSERT_EQ(db_iter->key().ToString(), "c");
  ASSERT_EQ(db_iter->value().ToString(), "3");
-
-  db_iter->SeekForPrev("c");
-  ASSERT_TRUE(db_iter->Valid());
-  db_iter->Next();
-  ASSERT_TRUE(db_iter->Valid());
-  ASSERT_EQ(db_iter->key().ToString(), "d");
-  ASSERT_EQ(db_iter->value().ToString(), "4");
-
-  db_iter->Prev();
-  ASSERT_TRUE(db_iter->Valid());
-  ASSERT_EQ(db_iter->key().ToString(), "c");
-  ASSERT_EQ(db_iter->value().ToString(), "3");
 }

 TEST_F(DBIteratorTest, SeekToLastOccurrenceSeq0) {
@@ -1969,7 +1911,7 @@ TEST_F(DBIterWithMergeIterTest, InnerMergeIterator1) {

 TEST_F(DBIterWithMergeIterTest, InnerMergeIterator2) {
  // Test Prev() when one child iterator is at its end.
-  db_iter_->SeekForPrev("g");
+  db_iter_->Seek("g");
  ASSERT_TRUE(db_iter_->Valid());
  ASSERT_EQ(db_iter_->key().ToString(), "g");
  ASSERT_EQ(db_iter_->value().ToString(), "3");
@@ -204,22 +204,6 @@ TEST_F(DBIteratorTest, IterSeekBeforePrev) {
  delete iter;
 }

-TEST_F(DBIteratorTest, IterSeekForPrevBeforeNext) {
-  ASSERT_OK(Put("a", "b"));
-  ASSERT_OK(Put("c", "d"));
-  dbfull()->Flush(FlushOptions());
-  ASSERT_OK(Put("0", "f"));
-  ASSERT_OK(Put("1", "h"));
-  dbfull()->Flush(FlushOptions());
-  ASSERT_OK(Put("2", "j"));
-  auto iter = db_->NewIterator(ReadOptions());
-  iter->SeekForPrev(Slice("0"));
-  iter->Next();
-  iter->SeekForPrev(Slice("1"));
-  iter->Next();
-  delete iter;
-}
-
 namespace {
 std::string MakeLongKey(size_t length, char c) {
  return std::string(length, c);
@@ -247,13 +231,6 @@ TEST_F(DBIteratorTest, IterLongKeys) {
  ASSERT_EQ(IterStatus(iter), MakeLongKey(127, 3) + "->3");
  iter->Next();
  ASSERT_EQ(IterStatus(iter), MakeLongKey(64, 4) + "->4");
-
-  iter->SeekForPrev(MakeLongKey(127, 3));
-  ASSERT_EQ(IterStatus(iter), MakeLongKey(127, 3) + "->3");
-  iter->Prev();
-  ASSERT_EQ(IterStatus(iter), MakeLongKey(32, 2) + "->2");
-  iter->Prev();
-  ASSERT_EQ(IterStatus(iter), MakeLongKey(50, 1) + "->1");
  delete iter;

  iter = db_->NewIterator(ReadOptions());
@@ -284,11 +261,6 @@ TEST_F(DBIteratorTest, IterNextWithNewerSeq) {
  ASSERT_EQ(IterStatus(iter), "a->b");
  iter->Next();
  ASSERT_EQ(IterStatus(iter), "c->d");
-  iter->SeekForPrev(Slice("b"));
-  ASSERT_EQ(IterStatus(iter), "a->b");
-  iter->Next();
-  ASSERT_EQ(IterStatus(iter), "c->d");
-
  delete iter;
 }

@@ -312,13 +284,7 @@ TEST_F(DBIteratorTest, IterPrevWithNewerSeq) {
  ASSERT_EQ(IterStatus(iter), "c->d");
  iter->Prev();
  ASSERT_EQ(IterStatus(iter), "a->b");
-  iter->Prev();
-  iter->SeekForPrev(Slice("d"));
-  ASSERT_EQ(IterStatus(iter), "d->e");
-  iter->Prev();
-  ASSERT_EQ(IterStatus(iter), "c->d");
-  iter->Prev();
-  ASSERT_EQ(IterStatus(iter), "a->b");
+
  iter->Prev();
  delete iter;
 }
@@ -328,13 +294,10 @@ TEST_F(DBIteratorTest, IterPrevWithNewerSeq2) {
  dbfull()->Flush(FlushOptions());
  ASSERT_OK(Put("a", "b"));
  ASSERT_OK(Put("c", "d"));
-  ASSERT_OK(Put("e", "f"));
+  ASSERT_OK(Put("d", "e"));
  auto iter = db_->NewIterator(ReadOptions());
-  auto iter2 = db_->NewIterator(ReadOptions());
  iter->Seek(Slice("c"));
-  iter2->SeekForPrev(Slice("d"));
  ASSERT_EQ(IterStatus(iter), "c->d");
-  ASSERT_EQ(IterStatus(iter2), "c->d");

  // Create a key that needs to be skipped for Seq too new
  for (uint64_t i = 0; i < last_options_.max_sequential_skip_in_iterations + 1;
@@ -344,12 +307,9 @@ TEST_F(DBIteratorTest, IterPrevWithNewerSeq2) {

  iter->Prev();
  ASSERT_EQ(IterStatus(iter), "a->b");
+
  iter->Prev();
-  iter2->Prev();
-  ASSERT_EQ(IterStatus(iter2), "a->b");
-  iter2->Prev();
  delete iter;
-  delete iter2;
 }

 TEST_F(DBIteratorTest, IterEmpty) {
@@ -366,9 +326,6 @@ TEST_F(DBIteratorTest, IterEmpty) {
    iter->Seek("foo");
    ASSERT_EQ(IterStatus(iter), "(invalid)");

-    iter->SeekForPrev("foo");
-    ASSERT_EQ(IterStatus(iter), "(invalid)");
-
    delete iter;
  } while (ChangeCompactOptions());
 }
@@ -401,24 +358,14 @@ TEST_F(DBIteratorTest, IterSingle) {
    ASSERT_EQ(IterStatus(iter), "a->va");
    iter->Next();
    ASSERT_EQ(IterStatus(iter), "(invalid)");
-    iter->SeekForPrev("");
-    ASSERT_EQ(IterStatus(iter), "(invalid)");

    iter->Seek("a");
    ASSERT_EQ(IterStatus(iter), "a->va");
    iter->Next();
    ASSERT_EQ(IterStatus(iter), "(invalid)");
-    iter->SeekForPrev("a");
-    ASSERT_EQ(IterStatus(iter), "a->va");
-    iter->Prev();
-    ASSERT_EQ(IterStatus(iter), "(invalid)");

    iter->Seek("b");
    ASSERT_EQ(IterStatus(iter), "(invalid)");
-    iter->SeekForPrev("b");
-    ASSERT_EQ(IterStatus(iter), "a->va");
-    iter->Prev();
-    ASSERT_EQ(IterStatus(iter), "(invalid)");

    delete iter;
  } while (ChangeCompactOptions());
@@ -464,21 +411,11 @@ TEST_F(DBIteratorTest, IterMulti) {
    ASSERT_EQ(IterStatus(iter), "a->va");
    iter->Seek("ax");
    ASSERT_EQ(IterStatus(iter), "b->vb");
-    iter->SeekForPrev("d");
-    ASSERT_EQ(IterStatus(iter), "c->vc");
-    iter->SeekForPrev("c");
-    ASSERT_EQ(IterStatus(iter), "c->vc");
-    iter->SeekForPrev("bx");
-    ASSERT_EQ(IterStatus(iter), "b->vb");

    iter->Seek("b");
    ASSERT_EQ(IterStatus(iter), "b->vb");
    iter->Seek("z");
    ASSERT_EQ(IterStatus(iter), "(invalid)");
-    iter->SeekForPrev("b");
-    ASSERT_EQ(IterStatus(iter), "b->vb");
-    iter->SeekForPrev("");
-    ASSERT_EQ(IterStatus(iter), "(invalid)");

    // Switch from reverse to forward
    iter->SeekToLast();
@@ -666,8 +603,7 @@ TEST_F(DBIteratorTest, IterMultiWithDelete) {
      // TODO: merge operator does not support backward iteration yet
      if (kPlainTableAllBytesPrefix != option_config_ &&
          kBlockBasedTableWithWholeKeyHashIndex != option_config_ &&
-          kHashLinkList != option_config_ &&
-          kHashSkipList != option_config_) {  // doesn't support SeekToLast
+          kHashLinkList != option_config_) {
        iter->Prev();
        ASSERT_EQ(IterStatus(iter), "ka->va");
      }
@@ -722,7 +658,6 @@ TEST_F(DBIteratorTest, IterWithSnapshot) {
    options.snapshot = snapshot;
    Iterator* iter = db_->NewIterator(options, handles_[1]);

-    ASSERT_OK(Put(1, "key0", "val0"));
    // Put more values after the snapshot
    ASSERT_OK(Put(1, "key100", "val100"));
    ASSERT_OK(Put(1, "key101", "val101"));
@@ -733,7 +668,7 @@ TEST_F(DBIteratorTest, IterWithSnapshot) {
      // TODO: merge operator does not support backward iteration yet
      if (kPlainTableAllBytesPrefix != option_config_ &&
          kBlockBasedTableWithWholeKeyHashIndex != option_config_ &&
-          kHashLinkList != option_config_ && kHashSkipList != option_config_) {
+          kHashLinkList != option_config_) {
        iter->Prev();
        ASSERT_EQ(IterStatus(iter), "key4->val4");
        iter->Prev();
@@ -747,26 +682,6 @@ TEST_F(DBIteratorTest, IterWithSnapshot) {
      iter->Next();
      ASSERT_TRUE(!iter->Valid());
    }
-
-    if (!CurrentOptions().merge_operator) {
-      // TODO(gzh): merge operator does not support backward iteration yet
-      if (kPlainTableAllBytesPrefix != option_config_ &&
-          kBlockBasedTableWithWholeKeyHashIndex != option_config_ &&
-          kHashLinkList != option_config_ && kHashSkipList != option_config_) {
-        iter->SeekForPrev("key1");
-        ASSERT_EQ(IterStatus(iter), "key1->val1");
-        iter->Next();
-        ASSERT_EQ(IterStatus(iter), "key2->val2");
-        iter->Next();
-        ASSERT_EQ(IterStatus(iter), "key3->val3");
-        iter->Prev();
-        ASSERT_EQ(IterStatus(iter), "key2->val2");
-        iter->Prev();
-        ASSERT_EQ(IterStatus(iter), "key1->val1");
-        iter->Prev();
-        ASSERT_TRUE(!iter->Valid());
-      }
-    }
    db_->ReleaseSnapshot(snapshot);
    delete iter;
    // skip as HashCuckooRep does not support snapshot
@@ -830,19 +745,6 @@ TEST_F(DBIteratorTest, DBIteratorBoundTest) {
    iter->Next();
    ASSERT_TRUE(iter->Valid());
    ASSERT_EQ(iter->key().compare(Slice("g1")), 0);
-
-    iter->SeekForPrev("g1");
-
-    ASSERT_TRUE(iter->Valid());
-    ASSERT_EQ(iter->key().compare(Slice("g1")), 0);
-
-    iter->Prev();
-    ASSERT_TRUE(iter->Valid());
-    ASSERT_EQ(iter->key().compare(Slice("foo1")), 0);
-
-    iter->Prev();
-    ASSERT_TRUE(iter->Valid());
-    ASSERT_EQ(iter->key().compare(Slice("foo")), 0);
  }

  // testing iterate_upper_bound and forward iterator
@@ -975,7 +877,7 @@ TEST_F(DBIteratorTest, DBIteratorBoundTest) {

 // TODO(3.13): fix the issue of Seek() + Prev() which might not necessary
 //             return the biggest key which is smaller than the seek key.
-TEST_F(DBIteratorTest, PrevAfterAndNextAfterMerge) {
+TEST_F(DBIteratorTest, PrevAfterMerge) {
  Options options;
  options.create_if_missing = true;
  options.merge_operator = MergeOperators::CreatePutOperator();
@@ -996,14 +898,6 @@ TEST_F(DBIteratorTest, PrevAfterAndNextAfterMerge) {
  it->Prev();
  ASSERT_TRUE(it->Valid());
  ASSERT_EQ("1", it->key().ToString());
-
-  it->SeekForPrev("1");
-  ASSERT_TRUE(it->Valid());
-  ASSERT_EQ("1", it->key().ToString());
-
-  it->Next();
-  ASSERT_TRUE(it->Valid());
-  ASSERT_EQ("2", it->key().ToString());
 }

 TEST_F(DBIteratorTest, PinnedDataIteratorRandomized) {
@@ -1086,6 +980,7 @@ TEST_F(DBIteratorTest, PinnedDataIteratorRandomized) {

    {
      // Test Seek to random keys
+      printf("Testing seek on %" ROCKSDB_PRIszt " keys\n", random_keys.size());
      std::vector<Slice> keys_slices;
      std::vector<std::string> true_keys;
      for (auto& k : random_keys) {
@@ -1107,31 +1002,9 @@ TEST_F(DBIteratorTest, PinnedDataIteratorRandomized) {
      }
    }

-    {
-      // Test SeekForPrev to random keys
-      std::vector<Slice> keys_slices;
-      std::vector<std::string> true_keys;
-      for (auto& k : random_keys) {
-        iter->SeekForPrev(k);
-        if (!iter->Valid()) {
-          ASSERT_EQ(true_data.upper_bound(k), true_data.begin());
-          continue;
-        }
-        std::string prop_value;
-        ASSERT_OK(
-            iter->GetProperty("rocksdb.iterator.is-key-pinned", &prop_value));
-        ASSERT_EQ("1", prop_value);
-        keys_slices.push_back(iter->key());
-        true_keys.push_back((--true_data.upper_bound(k))->first);
-      }
-
-      for (size_t i = 0; i < keys_slices.size(); i++) {
-        ASSERT_EQ(keys_slices[i].ToString(), true_keys[i]);
-      }
-    }
-
    {
      // Test iterating all data forward
+      printf("Testing iterating forward on all keys\n");
      std::vector<Slice> all_keys;
      for (iter->SeekToFirst(); iter->Valid(); iter->Next()) {
        std::string prop_value;
@@ -1152,6 +1025,7 @@ TEST_F(DBIteratorTest, PinnedDataIteratorRandomized) {

    {
      // Test iterating all data backward
+      printf("Testing iterating backward on all keys\n");
      std::vector<Slice> all_keys;
      for (iter->SeekToLast(); iter->Valid(); iter->Prev()) {
        std::string prop_value;
@@ -1356,60 +1230,6 @@ TEST_F(DBIteratorTest, PinnedDataIteratorReadAfterUpdate) {
  delete iter;
 }

-TEST_F(DBIteratorTest, IterSeekForPrevCrossingFiles) {
-  Options options = CurrentOptions();
-  options.prefix_extractor.reset(NewFixedPrefixTransform(1));
-  options.disable_auto_compactions = true;
-  // Enable prefix bloom for SST files
-  BlockBasedTableOptions table_options;
-  table_options.filter_policy.reset(NewBloomFilterPolicy(10, true));
-  options.table_factory.reset(NewBlockBasedTableFactory(table_options));
-  DestroyAndReopen(options);
-
-  ASSERT_OK(Put("a1", "va1"));
-  ASSERT_OK(Put("a2", "va2"));
-  ASSERT_OK(Put("a3", "va3"));
-  ASSERT_OK(Flush());
-
-  ASSERT_OK(Put("b1", "vb1"));
-  ASSERT_OK(Put("b2", "vb2"));
-  ASSERT_OK(Put("b3", "vb3"));
-  ASSERT_OK(Flush());
-
-  ASSERT_OK(Put("b4", "vb4"));
-  ASSERT_OK(Put("d1", "vd1"));
-  ASSERT_OK(Put("d2", "vd2"));
-  ASSERT_OK(Put("d4", "vd4"));
-  ASSERT_OK(Flush());
-
-  MoveFilesToLevel(1);
-  {
-    ReadOptions ro;
-    Iterator* iter = db_->NewIterator(ro);
-
-    iter->SeekForPrev("a4");
-    ASSERT_EQ(iter->key().ToString(), "a3");
-    ASSERT_EQ(iter->value().ToString(), "va3");
-
-    iter->SeekForPrev("c2");
-    ASSERT_EQ(iter->key().ToString(), "b3");
-    iter->SeekForPrev("d3");
-    ASSERT_EQ(iter->key().ToString(), "d2");
-    iter->SeekForPrev("b5");
-    ASSERT_EQ(iter->key().ToString(), "b4");
-    delete iter;
-  }
-
-  {
-    ReadOptions ro;
-    ro.prefix_same_as_start = true;
-    Iterator* iter = db_->NewIterator(ro);
-    iter->SeekForPrev("c2");
-    ASSERT_TRUE(!iter->Valid());
-    delete iter;
-  }
-}
-
 TEST_F(DBIteratorTest, IterPrevKeyCrossingBlocks) {
  Options options = CurrentOptions();
  BlockBasedTableOptions table_options;
@@ -6,258 +6,92 @@
 // Copyright (c) 2011 The LevelDB Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file. See the AUTHORS file for names of contributors.
-#include <limits>
-#include <string>
-#include <unordered_map>
-
-#include "db/column_family.h"
-#include "db/db_impl.h"
 #include "db/db_test_util.h"
 #include "port/stack_trace.h"
-#include "rocksdb/convenience.h"
-#include "util/options_helper.h"
-#include "util/random.h"
 #include "util/sync_point.h"
-#include "util/testutil.h"

 namespace rocksdb {

 class DBOptionsTest : public DBTestBase {
 public:
  DBOptionsTest() : DBTestBase("/db_options_test") {}
-
-#ifndef ROCKSDB_LITE
-  std::unordered_map<std::string, std::string> GetMutableDBOptionsMap(
-      const DBOptions& options) {
-    std::string options_str;
-    GetStringFromDBOptions(&options_str, options);
-    std::unordered_map<std::string, std::string> options_map;
-    StringToMap(options_str, &options_map);
-    std::unordered_map<std::string, std::string> mutable_map;
-    for (const auto opt : db_options_type_info) {
-      if (opt.second.is_mutable &&
-          opt.second.verification != OptionVerificationType::kDeprecated) {
-        mutable_map[opt.first] = options_map[opt.first];
-      }
-    }
-    return mutable_map;
-  }
-
-  std::unordered_map<std::string, std::string> GetMutableCFOptionsMap(
-      const ColumnFamilyOptions& options) {
-    std::string options_str;
-    GetStringFromColumnFamilyOptions(&options_str, options);
-    std::unordered_map<std::string, std::string> options_map;
-    StringToMap(options_str, &options_map);
-    std::unordered_map<std::string, std::string> mutable_map;
-    for (const auto opt : cf_options_type_info) {
-      if (opt.second.is_mutable &&
-          opt.second.verification != OptionVerificationType::kDeprecated) {
-        mutable_map[opt.first] = options_map[opt.first];
-      }
-    }
-    return mutable_map;
-  }
-
-  std::unordered_map<std::string, std::string> GetRandomizedMutableCFOptionsMap(
-      Random* rnd) {
-    Options options;
-    ImmutableDBOptions db_options(options);
-    test::RandomInitCFOptions(&options, rnd);
-    auto sanitized_options = SanitizeOptions(db_options, nullptr, options);
-    auto opt_map = GetMutableCFOptionsMap(sanitized_options);
-    delete options.compaction_filter;
-    return opt_map;
-  }
-
-  std::unordered_map<std::string, std::string> GetRandomizedMutableDBOptionsMap(
-      Random* rnd) {
-    DBOptions db_options;
-    test::RandomInitDBOptions(&db_options, rnd);
-    auto sanitized_options = SanitizeOptions(dbname_, db_options);
-    return GetMutableDBOptionsMap(sanitized_options);
-  }
-#endif  // ROCKSDB_LITE
 };

-// RocksDB lite don't support dynamic options.
-#ifndef ROCKSDB_LITE
-
-TEST_F(DBOptionsTest, GetLatestDBOptions) {
-  // GetOptions should be able to get latest option changed by SetOptions.
+// When write stalls, user can enable auto compaction to unblock writes.
+// However, we had an issue where the stalled write thread blocks the attempt
+// to persist auto compaction option, thus creating a deadlock. The test
+// verifies the issue is fixed.
+TEST_F(DBOptionsTest, EnableAutoCompactionToUnblockWrites) {
  Options options;
-  options.create_if_missing = true;
-  Random rnd(228);
+  options.disable_auto_compactions = true;
+  options.write_buffer_size = 1000 * 1000;  // 1M
+  options.level0_file_num_compaction_trigger = 1;
+  options.level0_slowdown_writes_trigger = 1;
+  options.level0_stop_writes_trigger = 1;
+  options.compression = kNoCompression;
+
+  SyncPoint::GetInstance()->LoadDependency(
+      {{"DBImpl::DelayWrite:Wait",
+        "DBOptionsTest::EnableAutoCompactionToUnblockWrites:1"},
+       {"DBImpl::BackgroundCompaction:Finish",
+        "DBOptionsTest::EnableAutoCompactionToUnblockWrites:1"}});
+  SyncPoint::GetInstance()->EnableProcessing();
+
+  // Stall writes.
  Reopen(options);
-  auto new_options = GetRandomizedMutableDBOptionsMap(&rnd);
-  ASSERT_OK(dbfull()->SetDBOptions(new_options));
-  ASSERT_EQ(new_options, GetMutableDBOptionsMap(dbfull()->GetDBOptions()));
+  env_->StartThread(
+      [](void* arg) {
+        std::string value(1000, 'v');
+        auto* t = static_cast<DBOptionsTest*>(arg);
+        for (int i = 0; i < 2000; i++) {
+          ASSERT_OK(t->Put(t->Key(i), value));
+        }
+      },
+      this);
+  TEST_SYNC_POINT("DBOptionsTest::EnableAutoCompactionToUnblockWrites:1");
+  ASSERT_TRUE(dbfull()->TEST_write_controler().IsStopped());
+  ColumnFamilyHandle* handle = dbfull()->DefaultColumnFamily();
+  // We will get a deadlock here if we hit the issue.
+  dbfull()->EnableAutoCompaction({handle});
+  env_->WaitForJoin();
 }

-TEST_F(DBOptionsTest, GetLatestCFOptions) {
-  // GetOptions should be able to get latest option changed by SetOptions.
+// Similar to EnableAutoCompactionAfterStallDeadlock. See comments there.
+TEST_F(DBOptionsTest, ToggleStopTriggerToUnblockWrites) {
  Options options;
-  options.create_if_missing = true;
-  Random rnd(228);
+  options.disable_auto_compactions = true;
+  options.write_buffer_size = 1000 * 1000;  // 1M
+  options.level0_file_num_compaction_trigger = 1;
+  options.level0_slowdown_writes_trigger = 1;
+  options.level0_stop_writes_trigger = 1;
+  options.compression = kNoCompression;
+
+  SyncPoint::GetInstance()->LoadDependency(
+      {{"DBImpl::DelayWrite:Wait",
+        "DBOptionsTest::ToggleStopTriggerToUnblockWrites:1"},
+       {"DBImpl::BackgroundCompaction:Finish",
+        "DBOptionsTest::ToggleStopTriggerToUnblockWrites:1"}});
+  SyncPoint::GetInstance()->EnableProcessing();
+
+  // Stall writes.
  Reopen(options);
-  CreateColumnFamilies({"foo"}, options);
-  ReopenWithColumnFamilies({"default", "foo"}, options);
-  auto options_default = GetRandomizedMutableCFOptionsMap(&rnd);
-  auto options_foo = GetRandomizedMutableCFOptionsMap(&rnd);
-  ASSERT_OK(dbfull()->SetOptions(handles_[0], options_default));
-  ASSERT_OK(dbfull()->SetOptions(handles_[1], options_foo));
-  ASSERT_EQ(options_default,
-            GetMutableCFOptionsMap(dbfull()->GetOptions(handles_[0])));
-  ASSERT_EQ(options_foo,
-            GetMutableCFOptionsMap(dbfull()->GetOptions(handles_[1])));
+  env_->StartThread(
+      [](void* arg) {
+        std::string value(1000, 'v');
+        auto* t = static_cast<DBOptionsTest*>(arg);
+        for (int i = 0; i < 2000; i++) {
+          ASSERT_OK(t->Put(t->Key(i), value));
+        }
+      },
+      this);
+  TEST_SYNC_POINT("DBOptionsTest::ToggleStopTriggerToUnblockWrites:1");
+  ASSERT_TRUE(dbfull()->TEST_write_controler().IsStopped());
+  // We will get a deadlock here if we hit the issue.
+  dbfull()->SetOptions({{"level0_stop_writes_trigger", "1000000"},
+                        {"level0_slowdown_writes_trigger", "1000000"}});
+  env_->WaitForJoin();
 }

-TEST_F(DBOptionsTest, SetOptionsAndReopen) {
-  Random rnd(1044);
-  auto rand_opts = GetRandomizedMutableCFOptionsMap(&rnd);
-  ASSERT_OK(dbfull()->SetOptions(rand_opts));
-  // Verify if DB can be reopen after setting options.
-  Options options;
-  ASSERT_OK(TryReopen(options));
-}
-
-TEST_F(DBOptionsTest, EnableAutoCompactionAndTriggerStall) {
-  const std::string kValue(1024, 'v');
-  for (int method_type = 0; method_type < 2; method_type++) {
-    for (int option_type = 0; option_type < 4; option_type++) {
-      Options options;
-      options.create_if_missing = true;
-      options.disable_auto_compactions = true;
-      options.write_buffer_size = 1024 * 1024 * 10;
-      options.compression = CompressionType::kNoCompression;
-      options.level0_file_num_compaction_trigger = 1;
-      options.level0_stop_writes_trigger = std::numeric_limits<int>::max();
-      options.level0_slowdown_writes_trigger = std::numeric_limits<int>::max();
-      options.hard_pending_compaction_bytes_limit =
-          std::numeric_limits<uint64_t>::max();
-      options.soft_pending_compaction_bytes_limit =
-          std::numeric_limits<uint64_t>::max();
-
-      DestroyAndReopen(options);
-      int i = 0;
-      for (; i < 1024; i++) {
-        Put(Key(i), kValue);
-      }
-      Flush();
-      for (; i < 1024 * 2; i++) {
-        Put(Key(i), kValue);
-      }
-      Flush();
-      dbfull()->TEST_WaitForFlushMemTable();
-      ASSERT_EQ(2, NumTableFilesAtLevel(0));
-      uint64_t l0_size = SizeAtLevel(0);
-
-      switch (option_type) {
-        case 0:
-          // test with level0_stop_writes_trigger
-          options.level0_stop_writes_trigger = 2;
-          options.level0_slowdown_writes_trigger = 2;
-          break;
-        case 1:
-          options.level0_slowdown_writes_trigger = 2;
-          break;
-        case 2:
-          options.hard_pending_compaction_bytes_limit = l0_size;
-          options.soft_pending_compaction_bytes_limit = l0_size;
-          break;
-        case 3:
-          options.soft_pending_compaction_bytes_limit = l0_size;
-          break;
-      }
-      Reopen(options);
-      dbfull()->TEST_WaitForCompact();
-      ASSERT_FALSE(dbfull()->TEST_write_controler().IsStopped());
-      ASSERT_FALSE(dbfull()->TEST_write_controler().NeedsDelay());
-
-      SyncPoint::GetInstance()->LoadDependency(
-          {{"DBOptionsTest::EnableAutoCompactionAndTriggerStall:1",
-            "BackgroundCallCompaction:0"},
-           {"DBImpl::BackgroundCompaction():BeforePickCompaction",
-            "DBOptionsTest::EnableAutoCompactionAndTriggerStall:2"},
-           {"DBOptionsTest::EnableAutoCompactionAndTriggerStall:3",
-            "DBImpl::BackgroundCompaction():AfterPickCompaction"}});
-      // Block background compaction.
-      SyncPoint::GetInstance()->EnableProcessing();
-
-      switch (method_type) {
-        case 0:
-          ASSERT_OK(
-              dbfull()->SetOptions({{"disable_auto_compactions", "false"}}));
-          break;
-        case 1:
-          ASSERT_OK(dbfull()->EnableAutoCompaction(
-              {dbfull()->DefaultColumnFamily()}));
-          break;
-      }
-      TEST_SYNC_POINT("DBOptionsTest::EnableAutoCompactionAndTriggerStall:1");
-      // Wait for stall condition recalculate.
-      TEST_SYNC_POINT("DBOptionsTest::EnableAutoCompactionAndTriggerStall:2");
-
-      switch (option_type) {
-        case 0:
-          ASSERT_TRUE(dbfull()->TEST_write_controler().IsStopped());
-          break;
-        case 1:
-          ASSERT_FALSE(dbfull()->TEST_write_controler().IsStopped());
-          ASSERT_TRUE(dbfull()->TEST_write_controler().NeedsDelay());
-          break;
-        case 2:
-          ASSERT_TRUE(dbfull()->TEST_write_controler().IsStopped());
-          break;
-        case 3:
-          ASSERT_FALSE(dbfull()->TEST_write_controler().IsStopped());
-          ASSERT_TRUE(dbfull()->TEST_write_controler().NeedsDelay());
-          break;
-      }
-      TEST_SYNC_POINT("DBOptionsTest::EnableAutoCompactionAndTriggerStall:3");
-
-      // Background compaction executed.
-      dbfull()->TEST_WaitForCompact();
-      ASSERT_FALSE(dbfull()->TEST_write_controler().IsStopped());
-      ASSERT_FALSE(dbfull()->TEST_write_controler().NeedsDelay());
-    }
-  }
-}
-
-TEST_F(DBOptionsTest, SetOptionsMayTriggerCompaction) {
-  Options options;
-  options.create_if_missing = true;
-  options.level0_file_num_compaction_trigger = 1000;
-  Reopen(options);
-  for (int i = 0; i < 3; i++) {
-    // Need to insert two keys to avoid trivial move.
-    ASSERT_OK(Put("foo", ToString(i)));
-    ASSERT_OK(Put("bar", ToString(i)));
-    Flush();
-  }
-  ASSERT_EQ("3", FilesPerLevel());
-  ASSERT_OK(
-      dbfull()->SetOptions({{"level0_file_num_compaction_trigger", "3"}}));
-  dbfull()->TEST_WaitForCompact();
-  ASSERT_EQ("0,1", FilesPerLevel());
-}
-
-TEST_F(DBOptionsTest, SetBackgroundCompactionThreads) {
-  Options options;
-  options.create_if_missing = true;
-  options.base_background_compactions = 1;  // default value
-  options.max_background_compactions = 1;   // default value
-  Reopen(options);
-  ASSERT_EQ(1, dbfull()->TEST_BGCompactionsAllowed());
-  ASSERT_OK(dbfull()->SetDBOptions({{"base_background_compactions", "2"},
-                                    {"max_background_compactions", "3"}}));
-  ASSERT_EQ(2, dbfull()->TEST_BGCompactionsAllowed());
-  auto stop_token = dbfull()->TEST_write_controler().GetStopToken();
-  ASSERT_EQ(3, dbfull()->TEST_BGCompactionsAllowed());
-}
-
-#endif  // ROCKSDB_LITE
-
 }  // namespace rocksdb

 int main(int argc, char** argv) {
@@ -557,9 +557,9 @@ TEST_F(DBPropertiesTest, NumImmutableMemTable) {
    ASSERT_EQ(num, "3");
    ASSERT_TRUE(dbfull()->GetProperty(
        handles_[1], "rocksdb.cur-size-active-mem-table", &num));
-    // "384" is the size of the metadata of two empty skiplists, this would
+    // "192" is the size of the metadata of an empty skiplist, this would
    // break if we change the default skiplist implementation
-    ASSERT_EQ(num, "384");
+    ASSERT_EQ(num, "192");

    uint64_t int_num;
    uint64_t base_total_size;
@@ -594,8 +594,7 @@ TEST_F(DBPropertiesTest, NumImmutableMemTable) {
  } while (ChangeCompactOptions());
 }

-// TODO(techdept) : Disabled flaky test #12863555
-TEST_F(DBPropertiesTest, DISABLED_GetProperty) {
+TEST_F(DBPropertiesTest, GetProperty) {
  // Set sizes to both background thread pool to be 1 and block them.
  env_->SetBackgroundThreads(1, Env::HIGH);
  env_->SetBackgroundThreads(1, Env::LOW);
@@ -138,14 +138,14 @@ TEST_F(DBTablePropertiesTest, GetPropertiesOfTablesInRange) {
  Options options;
  options.create_if_missing = true;
  options.write_buffer_size = 4096;
-  options.max_write_buffer_number = 3;
+  options.max_write_buffer_number = 8;
  options.level0_file_num_compaction_trigger = 2;
  options.level0_slowdown_writes_trigger = 2;
  options.level0_stop_writes_trigger = 4;
  options.target_file_size_base = 2048;
  options.max_bytes_for_level_base = 10240;
  options.max_bytes_for_level_multiplier = 4;
-  options.hard_pending_compaction_bytes_limit = 16 * 1024;
+  options.soft_rate_limit = 1.1;
  options.num_levels = 8;

  DestroyAndReopen(options);
@@ -155,12 +155,6 @@ TEST_F(DBTablePropertiesTest, GetPropertiesOfTablesInRange) {
    ASSERT_OK(Put(test::RandomKey(&rnd, 5), RandomString(&rnd, 102)));
  }
  Flush();
-  dbfull()->TEST_WaitForCompact();
-  if (NumTableFilesAtLevel(0) == 0) {
-    ASSERT_OK(Put(test::RandomKey(&rnd, 5), RandomString(&rnd, 102)));
-    Flush();
-  }
-
  db_->PauseBackgroundWork();

  // Ensure that we have at least L0, L1 and L2
@@ -699,58 +699,6 @@ TEST_F(DBTestTailingIterator, ForwardIteratorVersionProperty) {
  }
  ASSERT_EQ(v3, v4);
 }
-
-TEST_F(DBTestTailingIterator, SeekWithUpperBoundBug) {
-  ReadOptions read_options;
-  read_options.tailing = true;
-  const Slice upper_bound("cc", 3);
-  read_options.iterate_upper_bound = &upper_bound;
-
-
-  // 1st L0 file
-  ASSERT_OK(db_->Put(WriteOptions(), "aa", "SEEN"));
-  ASSERT_OK(Flush());
-
-  // 2nd L0 file
-  ASSERT_OK(db_->Put(WriteOptions(), "zz", "NOT-SEEN"));
-  ASSERT_OK(Flush());
-
-  std::unique_ptr<Iterator> iter(db_->NewIterator(read_options));
-
-  iter->Seek("aa");
-  ASSERT_TRUE(iter->Valid());
-  ASSERT_EQ(iter->key().ToString(), "aa");
-}
-
-TEST_F(DBTestTailingIterator, SeekToFirstWithUpperBoundBug) {
-  ReadOptions read_options;
-  read_options.tailing = true;
-  const Slice upper_bound("cc", 3);
-  read_options.iterate_upper_bound = &upper_bound;
-
-
-  // 1st L0 file
-  ASSERT_OK(db_->Put(WriteOptions(), "aa", "SEEN"));
-  ASSERT_OK(Flush());
-
-  // 2nd L0 file
-  ASSERT_OK(db_->Put(WriteOptions(), "zz", "NOT-SEEN"));
-  ASSERT_OK(Flush());
-
-  std::unique_ptr<Iterator> iter(db_->NewIterator(read_options));
-
-  iter->SeekToFirst();
-  ASSERT_TRUE(iter->Valid());
-  ASSERT_EQ(iter->key().ToString(), "aa");
-
-  iter->Next();
-  ASSERT_FALSE(iter->Valid());
-
-  iter->SeekToFirst();
-  ASSERT_TRUE(iter->Valid());
-  ASSERT_EQ(iter->key().ToString(), "aa");
-}
-
 }  // namespace rocksdb

 #endif  // !defined(ROCKSDB_LITE)
@@ -1193,7 +1193,7 @@ bool MinLevelToCompress(CompressionType& type, Options& options, int wbits,
    type = kXpressCompression;
    fprintf(stderr, "using xpress\n");
  } else if (ZSTD_Supported()) {
-    type = kZSTD;
+    type = kZSTDNotFinalCompression;
    fprintf(stderr, "using ZSTD\n");
  } else {
    fprintf(stderr, "skipping test, compression disabled\n");
@@ -2646,11 +2646,15 @@ class ModelDB : public DB {
  }

 #ifndef ROCKSDB_LITE
-  using DB::IngestExternalFile;
-  virtual Status IngestExternalFile(
-      ColumnFamilyHandle* column_family,
-      const std::vector<std::string>& external_files,
-      const IngestExternalFileOptions& options) override {
+  using DB::AddFile;
+  virtual Status AddFile(ColumnFamilyHandle* column_family,
+                         const std::vector<ExternalSstFileInfo>& file_info_list,
+                         bool move_file) override {
+    return Status::NotSupported("Not implemented.");
+  }
+  virtual Status AddFile(ColumnFamilyHandle* column_family,
+                         const std::vector<std::string>& file_path_list,
+                         bool move_file) override {
    return Status::NotSupported("Not implemented.");
  }

@@ -2758,12 +2762,6 @@ class ModelDB : public DB {
    return Status::NotSupported("Not supported operation.");
  }

-  virtual Status SetDBOptions(
-      const std::unordered_map<std::string, std::string>& new_options)
-      override {
-    return Status::NotSupported("Not supported operation.");
-  }
-
  using DB::CompactFiles;
  virtual Status CompactFiles(const CompactionOptions& compact_options,
                              ColumnFamilyHandle* column_family,
@@ -2808,12 +2806,13 @@ class ModelDB : public DB {
  virtual Env* GetEnv() const override { return nullptr; }

  using DB::GetOptions;
-  virtual Options GetOptions(ColumnFamilyHandle* column_family) const override {
+  virtual const Options& GetOptions(
+      ColumnFamilyHandle* column_family) const override {
    return options_;
  }

  using DB::GetDBOptions;
-  virtual DBOptions GetDBOptions() const override { return options_; }
+  virtual const DBOptions& GetDBOptions() const override { return options_; }

  using DB::Flush;
  virtual Status Flush(const rocksdb::FlushOptions& options,
@@ -2883,10 +2882,6 @@ class ModelDB : public DB {
    virtual void Seek(const Slice& k) override {
      iter_ = map_->lower_bound(k.ToString());
    }
-    virtual void SeekForPrev(const Slice& k) override {
-      iter_ = map_->upper_bound(k.ToString());
-      Prev();
-    }
    virtual void Next() override { ++iter_; }
    virtual void Prev() override {
      if (iter_ == map_->begin()) {
@@ -4276,8 +4271,10 @@ TEST_F(DBTest, DynamicCompactionOptions) {
  options.level0_file_num_compaction_trigger = 3;
  options.level0_slowdown_writes_trigger = 4;
  options.level0_stop_writes_trigger = 8;
+  options.max_grandparent_overlap_factor = 10;
+  options.expanded_compaction_factor = 25;
+  options.source_compaction_factor = 1;
  options.target_file_size_base = k64KB;
-  options.max_compaction_bytes = options.target_file_size_base * 10;
  options.target_file_size_multiplier = 1;
  options.max_bytes_for_level_base = k128KB;
  options.max_bytes_for_level_multiplier = 4;
@@ -4713,7 +4710,7 @@ TEST_F(DBTest, CompressionStatsTest) {
    type = kXpressCompression;
    fprintf(stderr, "using xpress\n");
  } else if (ZSTD_Supported()) {
-    type = kZSTD;
+    type = kZSTDNotFinalCompression;
    fprintf(stderr, "using ZSTD\n");
  } else {
    fprintf(stderr, "skipping test, compression disabled\n");
@@ -4723,7 +4720,7 @@ TEST_F(DBTest, CompressionStatsTest) {
  Options options = CurrentOptions();
  options.compression = type;
  options.statistics = rocksdb::CreateDBStatistics();
-  options.statistics->stats_level_ = StatsLevel::kExceptTimeForMutex;
+  options.statistics->stats_level_ = StatsLevel::kAll;
  DestroyAndReopen(options);

  int kNumKeysWritten = 100000;
@@ -4734,7 +4731,6 @@ TEST_F(DBTest, CompressionStatsTest) {
    // compressible string
    ASSERT_OK(Put(Key(i), RandomString(&rnd, 128) + std::string(128, 'a')));
  }
-  ASSERT_OK(Flush());
  ASSERT_GT(options.statistics->getTickerCount(NUMBER_BLOCK_COMPRESSED), 0);

  for (int i = 0; i < kNumKeysWritten; ++i) {
@@ -4754,7 +4750,6 @@ TEST_F(DBTest, CompressionStatsTest) {
    // compressible string
    ASSERT_OK(Put(Key(i), RandomString(&rnd, 128) + std::string(128, 'a')));
  }
-  ASSERT_OK(Flush());
  ASSERT_EQ(options.statistics->getTickerCount(NUMBER_BLOCK_COMPRESSED)
            - currentCompressions, 0);

@@ -4853,11 +4848,12 @@ class DelayedMergeOperator : public MergeOperator {

 public:
  explicit DelayedMergeOperator(DBTest* d) : db_test_(d) {}
-
-  virtual bool FullMergeV2(const MergeOperationInput& merge_in,
-                           MergeOperationOutput* merge_out) const override {
+  virtual bool FullMerge(const Slice& key, const Slice* existing_value,
+                         const std::deque<std::string>& operand_list,
+                         std::string* new_value,
+                         Logger* logger) const override {
    db_test_->env_->addon_time_.fetch_add(1000);
-    merge_out->new_value = "";
+    *new_value = "";
    return true;
  }

@@ -5026,7 +5022,7 @@ TEST_F(DBTest, SuggestCompactRangeTest) {
  options.compression = kNoCompression;
  options.max_bytes_for_level_base = 450 << 10;
  options.target_file_size_base = 98 << 10;
-  options.max_compaction_bytes = static_cast<uint64_t>(1) << 60;  // inf
+  options.max_grandparent_overlap_factor = 1 << 20;  // inf

  Reopen(options);

@@ -961,9 +961,9 @@ TEST_F(DBTest2, PresetCompressionDict) {
  compression_types.push_back(kLZ4Compression);
  compression_types.push_back(kLZ4HCCompression);
 #endif                          // LZ4_VERSION_NUMBER >= 10400
-  if (ZSTD_Supported()) {
-    compression_types.push_back(kZSTD);
-  }
+#if ZSTD_VERSION_NUMBER >= 500  // v0.5.0+
+  compression_types.push_back(kZSTDNotFinalCompression);
+#endif  // ZSTD_VERSION_NUMBER >= 500

  for (auto compression_type : compression_types) {
    options.compression = compression_type;
@@ -1210,37 +1210,6 @@ class PinL0IndexAndFilterBlocksTest : public DBTestBase,
  PinL0IndexAndFilterBlocksTest() : DBTestBase("/db_pin_l0_index_bloom_test") {}
  virtual void SetUp() override { infinite_max_files_ = GetParam(); }

-  void CreateTwoLevels(Options* options) {
-    if (infinite_max_files_) {
-      options->max_open_files = -1;
-    }
-    options->create_if_missing = true;
-    options->statistics = rocksdb::CreateDBStatistics();
-    BlockBasedTableOptions table_options;
-    table_options.cache_index_and_filter_blocks = true;
-    table_options.pin_l0_filter_and_index_blocks_in_cache = true;
-    table_options.filter_policy.reset(NewBloomFilterPolicy(20));
-    options->table_factory.reset(new BlockBasedTableFactory(table_options));
-    CreateAndReopenWithCF({"pikachu"}, *options);
-
-    Put(1, "a", "begin");
-    Put(1, "z", "end");
-    ASSERT_OK(Flush(1));
-    // move this table to L1
-    dbfull()->TEST_CompactRange(0, nullptr, nullptr, handles_[1]);
-
-    // reset block cache
-    table_options.block_cache = NewLRUCache(64 * 1024);
-    options->table_factory.reset(NewBlockBasedTableFactory(table_options));
-    TryReopenWithColumnFamilies({"default", "pikachu"}, *options);
-    // create new table at L0
-    Put(1, "a2", "begin2");
-    Put(1, "z2", "end2");
-    ASSERT_OK(Flush(1));
-
-    table_options.block_cache->EraseUnRefEntries();
-  }
-
  bool infinite_max_files_;
 };

@@ -1292,7 +1261,35 @@ TEST_P(PinL0IndexAndFilterBlocksTest,
 TEST_P(PinL0IndexAndFilterBlocksTest,
       MultiLevelIndexAndFilterBlocksCachedWithPinning) {
  Options options = CurrentOptions();
-  PinL0IndexAndFilterBlocksTest::CreateTwoLevels(&options);
+  if (infinite_max_files_) {
+    options.max_open_files = -1;
+  }
+  options.create_if_missing = true;
+  options.statistics = rocksdb::CreateDBStatistics();
+  BlockBasedTableOptions table_options;
+  table_options.cache_index_and_filter_blocks = true;
+  table_options.pin_l0_filter_and_index_blocks_in_cache = true;
+  table_options.filter_policy.reset(NewBloomFilterPolicy(20));
+  options.table_factory.reset(new BlockBasedTableFactory(table_options));
+  CreateAndReopenWithCF({"pikachu"}, options);
+
+  Put(1, "a", "begin");
+  Put(1, "z", "end");
+  ASSERT_OK(Flush(1));
+  // move this table to L1
+  dbfull()->TEST_CompactRange(0, nullptr, nullptr, handles_[1]);
+
+  // reset block cache
+  table_options.block_cache = NewLRUCache(64 * 1024);
+  options.table_factory.reset(NewBlockBasedTableFactory(table_options));
+  TryReopenWithColumnFamilies({"default", "pikachu"}, options);
+  // create new table at L0
+  Put(1, "a2", "begin2");
+  Put(1, "z2", "end2");
+  ASSERT_OK(Flush(1));
+
+  table_options.block_cache->EraseUnRefEntries();
+
  // get base cache values
  uint64_t fm = TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS);
  uint64_t fh = TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT);
@@ -1312,125 +1309,14 @@ TEST_P(PinL0IndexAndFilterBlocksTest,
  // the file is opened, prefetching results in a cache filter miss
  // the block is loaded and added to the cache,
  // then the get results in a cache hit for L1
-  // When we have inifinite max_files, there is still cache miss because we have
-  // reset the block cache
  value = Get(1, "a");
  ASSERT_EQ(fm + 1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
  ASSERT_EQ(im + 1, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
 }

-TEST_P(PinL0IndexAndFilterBlocksTest, DisablePrefetchingNonL0IndexAndFilter) {
-  Options options = CurrentOptions();
-  PinL0IndexAndFilterBlocksTest::CreateTwoLevels(&options);
-
-  // Get base cache values
-  uint64_t fm = TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS);
-  uint64_t fh = TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT);
-  uint64_t im = TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS);
-  uint64_t ih = TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT);
-
-  // Reopen database. If max_open_files is set as -1, table readers will be
-  // preloaded. This will trigger a BlockBasedTable::Open() and prefetch
-  // L0 index and filter. Level 1's prefetching is disabled in DB::Open()
-  TryReopenWithColumnFamilies({"default", "pikachu"}, options);
-
-  if (infinite_max_files_) {
-    // After reopen, cache miss are increased by one because we read (and only
-    // read) filter and index on L0
-    ASSERT_EQ(fm + 1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
-    ASSERT_EQ(fh, TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT));
-    ASSERT_EQ(im + 1, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
-    ASSERT_EQ(ih, TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT));
-  } else {
-    // If max_open_files is not -1, we do not preload table readers, so there is
-    // no change.
-    ASSERT_EQ(fm, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
-    ASSERT_EQ(fh, TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT));
-    ASSERT_EQ(im, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
-    ASSERT_EQ(ih, TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT));
-  }
-  std::string value;
-  // this should be read from L0
-  value = Get(1, "a2");
-  // If max_open_files is -1, we have pinned index and filter in Rep, so there
-  // will not be changes in index and filter misses or hits. If max_open_files
-  // is not -1, Get() will open a TableReader and prefetch index and filter.
-  ASSERT_EQ(fm + 1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
-  ASSERT_EQ(fh, TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT));
-  ASSERT_EQ(im + 1, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
-  ASSERT_EQ(ih, TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT));
-
-  // this should be read from L1
-  value = Get(1, "a");
-  if (infinite_max_files_) {
-    // In inifinite max files case, there's a cache miss in executing Get()
-    // because index and filter are not prefetched before.
-    ASSERT_EQ(fm + 2, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
-    ASSERT_EQ(fh, TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT));
-    ASSERT_EQ(im + 2, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
-    ASSERT_EQ(ih, TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT));
-  } else {
-    // In this case, cache miss will be increased by one in
-    // BlockBasedTable::Open() because this is not in DB::Open() code path so we
-    // will prefetch L1's index and filter. Cache hit will also be increased by
-    // one because Get() will read index and filter from the block cache
-    // prefetched in previous Open() call.
-    ASSERT_EQ(fm + 2, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
-    ASSERT_EQ(fh + 1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT));
-    ASSERT_EQ(im + 2, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
-    ASSERT_EQ(ih + 1, TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT));
-  }
-}
-
 INSTANTIATE_TEST_CASE_P(PinL0IndexAndFilterBlocksTest,
                        PinL0IndexAndFilterBlocksTest, ::testing::Bool());
-
 #ifndef ROCKSDB_LITE
-TEST_F(DBTest2, MaxCompactionBytesTest) {
-  Options options = CurrentOptions();
-  options.memtable_factory.reset(
-      new SpecialSkipListFactory(DBTestBase::kNumKeysByGenerateNewRandomFile));
-  options.compaction_style = kCompactionStyleLevel;
-  options.write_buffer_size = 200 << 10;
-  options.arena_block_size = 4 << 10;
-  options.level0_file_num_compaction_trigger = 4;
-  options.num_levels = 4;
-  options.compression = kNoCompression;
-  options.max_bytes_for_level_base = 450 << 10;
-  options.target_file_size_base = 100 << 10;
-  // Infinite for full compaction.
-  options.max_compaction_bytes = options.target_file_size_base * 100;
-
-  Reopen(options);
-
-  Random rnd(301);
-
-  for (int num = 0; num < 8; num++) {
-    GenerateNewRandomFile(&rnd);
-  }
-  CompactRangeOptions cro;
-  cro.bottommost_level_compaction = BottommostLevelCompaction::kForce;
-  ASSERT_OK(db_->CompactRange(cro, nullptr, nullptr));
-  ASSERT_EQ("0,0,8", FilesPerLevel(0));
-
-  // When compact from Ln -> Ln+1, cut a file if the file overlaps with
-  // more than three files in Ln+1.
-  options.max_compaction_bytes = options.target_file_size_base * 3;
-  Reopen(options);
-
-  GenerateNewRandomFile(&rnd);
-  // Add three more small files that overlap with the previous file
-  for (int i = 0; i < 3; i++) {
-    Put("a", "z");
-    ASSERT_OK(Flush());
-  }
-  dbfull()->TEST_WaitForCompact();
-
-  // Output files to L1 are cut to three pieces, according to
-  // options.max_compaction_bytes
-  ASSERT_EQ("0,3,8", FilesPerLevel(0));
-}
-
 static void UniqueIdCallback(void* arg) {
  int* result = reinterpret_cast<int*>(arg);
  if (*result == -1) {
@@ -1602,293 +1488,6 @@ TEST_F(DBTest2, SyncPointMarker) {
 }
 #endif

-class MergeOperatorPinningTest : public DBTest2,
-                                 public testing::WithParamInterface<bool> {
- public:
-  MergeOperatorPinningTest() { disable_block_cache_ = GetParam(); }
-
-  bool disable_block_cache_;
-};
-
-INSTANTIATE_TEST_CASE_P(MergeOperatorPinningTest, MergeOperatorPinningTest,
-                        ::testing::Bool());
-
-#ifndef ROCKSDB_LITE
-TEST_P(MergeOperatorPinningTest, OperandsMultiBlocks) {
-  Options options = CurrentOptions();
-  BlockBasedTableOptions table_options;
-  table_options.block_size = 1;  // every block will contain one entry
-  table_options.no_block_cache = disable_block_cache_;
-  options.table_factory.reset(NewBlockBasedTableFactory(table_options));
-  options.merge_operator = MergeOperators::CreateStringAppendTESTOperator();
-  options.level0_slowdown_writes_trigger = (1 << 30);
-  options.level0_stop_writes_trigger = (1 << 30);
-  options.disable_auto_compactions = true;
-  DestroyAndReopen(options);
-
-  const int kKeysPerFile = 10;
-  const int kOperandsPerKeyPerFile = 7;
-  const int kOperandSize = 100;
-  // Filse to write in L0 before compacting to lower level
-  const int kFilesPerLevel = 3;
-
-  Random rnd(301);
-  std::map<std::string, std::string> true_data;
-  int batch_num = 1;
-  int lvl_to_fill = 4;
-  int key_id = 0;
-  while (true) {
-    for (int j = 0; j < kKeysPerFile; j++) {
-      std::string key = Key(key_id % 35);
-      key_id++;
-      for (int k = 0; k < kOperandsPerKeyPerFile; k++) {
-        std::string val = RandomString(&rnd, kOperandSize);
-        ASSERT_OK(db_->Merge(WriteOptions(), key, val));
-        if (true_data[key].size() == 0) {
-          true_data[key] = val;
-        } else {
-          true_data[key] += "," + val;
-        }
-      }
-    }
-
-    if (lvl_to_fill == -1) {
-      // Keep last batch in memtable and stop
-      break;
-    }
-
-    ASSERT_OK(Flush());
-    if (batch_num % kFilesPerLevel == 0) {
-      if (lvl_to_fill != 0) {
-        MoveFilesToLevel(lvl_to_fill);
-      }
-      lvl_to_fill--;
-    }
-    batch_num++;
-  }
-
-  // 3 L0 files
-  // 1 L1 file
-  // 3 L2 files
-  // 1 L3 file
-  // 3 L4 Files
-  ASSERT_EQ(FilesPerLevel(), "3,1,3,1,3");
-
-  VerifyDBFromMap(true_data);
-}
-
-TEST_P(MergeOperatorPinningTest, Randomized) {
-  do {
-    Options options = CurrentOptions();
-    options.merge_operator = MergeOperators::CreateMaxOperator();
-    BlockBasedTableOptions table_options;
-    table_options.no_block_cache = disable_block_cache_;
-    options.table_factory.reset(NewBlockBasedTableFactory(table_options));
-    DestroyAndReopen(options);
-
-    Random rnd(301);
-    std::map<std::string, std::string> true_data;
-
-    const int kTotalMerges = 10000;
-    // Every key gets ~10 operands
-    const int kKeyRange = kTotalMerges / 10;
-    const int kOperandSize = 20;
-    const int kNumPutBefore = kKeyRange / 10;  // 10% value
-    const int kNumPutAfter = kKeyRange / 10;   // 10% overwrite
-    const int kNumDelete = kKeyRange / 10;     // 10% delete
-
-    // kNumPutBefore keys will have base values
-    for (int i = 0; i < kNumPutBefore; i++) {
-      std::string key = Key(rnd.Next() % kKeyRange);
-      std::string value = RandomString(&rnd, kOperandSize);
-      ASSERT_OK(db_->Put(WriteOptions(), key, value));
-
-      true_data[key] = value;
-    }
-
-    // Do kTotalMerges merges
-    for (int i = 0; i < kTotalMerges; i++) {
-      std::string key = Key(rnd.Next() % kKeyRange);
-      std::string value = RandomString(&rnd, kOperandSize);
-      ASSERT_OK(db_->Merge(WriteOptions(), key, value));
-
-      if (true_data[key] < value) {
-        true_data[key] = value;
-      }
-    }
-
-    // Overwrite random kNumPutAfter keys
-    for (int i = 0; i < kNumPutAfter; i++) {
-      std::string key = Key(rnd.Next() % kKeyRange);
-      std::string value = RandomString(&rnd, kOperandSize);
-      ASSERT_OK(db_->Put(WriteOptions(), key, value));
-
-      true_data[key] = value;
-    }
-
-    // Delete random kNumDelete keys
-    for (int i = 0; i < kNumDelete; i++) {
-      std::string key = Key(rnd.Next() % kKeyRange);
-      ASSERT_OK(db_->Delete(WriteOptions(), key));
-
-      true_data.erase(key);
-    }
-
-    VerifyDBFromMap(true_data);
-
-    // Skip HashCuckoo since it does not support merge operators
-  } while (ChangeOptions(kSkipMergePut | kSkipHashCuckoo));
-}
-
-class MergeOperatorHook : public MergeOperator {
- public:
-  explicit MergeOperatorHook(std::shared_ptr<MergeOperator> _merge_op)
-      : merge_op_(_merge_op) {}
-
-  virtual bool FullMergeV2(const MergeOperationInput& merge_in,
-                           MergeOperationOutput* merge_out) const override {
-    before_merge_();
-    bool res = merge_op_->FullMergeV2(merge_in, merge_out);
-    after_merge_();
-    return res;
-  }
-
-  virtual const char* Name() const override { return merge_op_->Name(); }
-
-  std::shared_ptr<MergeOperator> merge_op_;
-  std::function<void()> before_merge_ = []() {};
-  std::function<void()> after_merge_ = []() {};
-};
-
-TEST_P(MergeOperatorPinningTest, EvictCacheBeforeMerge) {
-  Options options = CurrentOptions();
-
-  auto merge_hook =
-      std::make_shared<MergeOperatorHook>(MergeOperators::CreateMaxOperator());
-  options.merge_operator = merge_hook;
-  options.disable_auto_compactions = true;
-  options.level0_slowdown_writes_trigger = (1 << 30);
-  options.level0_stop_writes_trigger = (1 << 30);
-  options.max_open_files = 20;
-  BlockBasedTableOptions bbto;
-  bbto.no_block_cache = disable_block_cache_;
-  if (bbto.no_block_cache == false) {
-    bbto.block_cache = NewLRUCache(64 * 1024 * 1024);
-  } else {
-    bbto.block_cache = nullptr;
-  }
-  options.table_factory.reset(NewBlockBasedTableFactory(bbto));
-  DestroyAndReopen(options);
-
-  const int kNumOperands = 30;
-  const int kNumKeys = 1000;
-  const int kOperandSize = 100;
-  Random rnd(301);
-
-  // 1000 keys every key have 30 operands, every operand is in a different file
-  std::map<std::string, std::string> true_data;
-  for (int i = 0; i < kNumOperands; i++) {
-    for (int j = 0; j < kNumKeys; j++) {
-      std::string k = Key(j);
-      std::string v = RandomString(&rnd, kOperandSize);
-      ASSERT_OK(db_->Merge(WriteOptions(), k, v));
-
-      true_data[k] = std::max(true_data[k], v);
-    }
-    ASSERT_OK(Flush());
-  }
-
-  std::vector<uint64_t> file_numbers = ListTableFiles(env_, dbname_);
-  ASSERT_EQ(file_numbers.size(), kNumOperands);
-  int merge_cnt = 0;
-
-  // Code executed before merge operation
-  merge_hook->before_merge_ = [&]() {
-    // Evict all tables from cache before every merge operation
-    for (uint64_t num : file_numbers) {
-      TableCache::Evict(dbfull()->TEST_table_cache(), num);
-    }
-    // Decrease cache capacity to force all unrefed blocks to be evicted
-    if (bbto.block_cache) {
-      bbto.block_cache->SetCapacity(1);
-    }
-    merge_cnt++;
-  };
-
-  // Code executed after merge operation
-  merge_hook->after_merge_ = [&]() {
-    // Increase capacity again after doing the merge
-    if (bbto.block_cache) {
-      bbto.block_cache->SetCapacity(64 * 1024 * 1024);
-    }
-  };
-
-  size_t total_reads;
-  VerifyDBFromMap(true_data, &total_reads);
-  ASSERT_EQ(merge_cnt, total_reads);
-
-  db_->CompactRange(CompactRangeOptions(), nullptr, nullptr);
-
-  VerifyDBFromMap(true_data, &total_reads);
-}
-
-TEST_P(MergeOperatorPinningTest, TailingIterator) {
-  Options options = CurrentOptions();
-  options.merge_operator = MergeOperators::CreateMaxOperator();
-  BlockBasedTableOptions bbto;
-  bbto.no_block_cache = disable_block_cache_;
-  options.table_factory.reset(NewBlockBasedTableFactory(bbto));
-  DestroyAndReopen(options);
-
-  const int kNumOperands = 100;
-  const int kNumWrites = 100000;
-
-  std::function<void()> writer_func = [&]() {
-    int k = 0;
-    for (int i = 0; i < kNumWrites; i++) {
-      db_->Merge(WriteOptions(), Key(k), Key(k));
-
-      if (i && i % kNumOperands == 0) {
-        k++;
-      }
-      if (i && i % 127 == 0) {
-        ASSERT_OK(Flush());
-      }
-      if (i && i % 317 == 0) {
-        ASSERT_OK(db_->CompactRange(CompactRangeOptions(), nullptr, nullptr));
-      }
-    }
-  };
-
-  std::function<void()> reader_func = [&]() {
-    ReadOptions ro;
-    ro.tailing = true;
-    Iterator* iter = db_->NewIterator(ro);
-
-    iter->SeekToFirst();
-    for (int i = 0; i < (kNumWrites / kNumOperands); i++) {
-      while (!iter->Valid()) {
-        // wait for the key to be written
-        env_->SleepForMicroseconds(100);
-        iter->Seek(Key(i));
-      }
-      ASSERT_EQ(iter->key(), Key(i));
-      ASSERT_EQ(iter->value(), Key(i));
-
-      iter->Next();
-    }
-
-    delete iter;
-  };
-
-  std::thread writer_thread(writer_func);
-  std::thread reader_thread(reader_func);
-
-  writer_thread.join();
-  reader_thread.join();
-}
-#endif  // ROCKSDB_LITE
-
 TEST_F(DBTest2, MaxSuccessiveMergesInRecovery) {
  Options options;
  options = CurrentOptions(options);
@@ -1905,286 +1504,6 @@ TEST_F(DBTest2, MaxSuccessiveMergesInRecovery) {
  options.max_successive_merges = 3;
  Reopen(options);
 }
-
-size_t GetEncodedEntrySize(size_t key_size, size_t value_size) {
-  std::string buffer;
-
-  PutVarint32(&buffer, static_cast<uint32_t>(0));
-  PutVarint32(&buffer, static_cast<uint32_t>(key_size));
-  PutVarint32(&buffer, static_cast<uint32_t>(value_size));
-
-  return buffer.size() + key_size + value_size;
-}
-
-TEST_F(DBTest2, ReadAmpBitmap) {
-  Options options = CurrentOptions();
-  BlockBasedTableOptions bbto;
-  // Disable delta encoding to make it easier to calculate read amplification
-  bbto.use_delta_encoding = false;
-  // Huge block cache to make it easier to calculate read amplification
-  bbto.block_cache = NewLRUCache(1024 * 1024 * 1024);
-  bbto.read_amp_bytes_per_bit = 16;
-  options.table_factory.reset(NewBlockBasedTableFactory(bbto));
-  options.statistics = rocksdb::CreateDBStatistics();
-  DestroyAndReopen(options);
-
-  const size_t kNumEntries = 10000;
-
-  Random rnd(301);
-  for (size_t i = 0; i < kNumEntries; i++) {
-    ASSERT_OK(Put(Key(static_cast<int>(i)), RandomString(&rnd, 100)));
-  }
-  ASSERT_OK(Flush());
-
-  Close();
-  Reopen(options);
-
-  // Read keys/values randomly and verify that reported read amp error
-  // is less than 2%
-  uint64_t total_useful_bytes = 0;
-  std::set<int> read_keys;
-  std::string value;
-  for (size_t i = 0; i < kNumEntries * 5; i++) {
-    int key_idx = rnd.Next() % kNumEntries;
-    std::string k = Key(key_idx);
-    ASSERT_OK(db_->Get(ReadOptions(), k, &value));
-
-    if (read_keys.find(key_idx) == read_keys.end()) {
-      auto ik = InternalKey(k, 0, ValueType::kTypeValue);
-      total_useful_bytes += GetEncodedEntrySize(ik.size(), value.size());
-      read_keys.insert(key_idx);
-    }
-
-    double expected_read_amp =
-        static_cast<double>(total_useful_bytes) /
-        options.statistics->getTickerCount(READ_AMP_TOTAL_READ_BYTES);
-
-    double read_amp =
-        static_cast<double>(options.statistics->getTickerCount(
-            READ_AMP_ESTIMATE_USEFUL_BYTES)) /
-        options.statistics->getTickerCount(READ_AMP_TOTAL_READ_BYTES);
-
-    double error_pct = fabs(expected_read_amp - read_amp) * 100;
-    // Error between reported read amp and real read amp should be less than 2%
-    EXPECT_LE(error_pct, 2);
-  }
-
-  // Make sure we read every thing in the DB (which is smaller than our cache)
-  Iterator* iter = db_->NewIterator(ReadOptions());
-  for (iter->SeekToFirst(); iter->Valid(); iter->Next()) {
-    ASSERT_EQ(iter->value().ToString(), Get(iter->key().ToString()));
-  }
-  delete iter;
-
-  // Read amp is 100% since we read all what we loaded in memory
-  ASSERT_EQ(options.statistics->getTickerCount(READ_AMP_ESTIMATE_USEFUL_BYTES),
-            options.statistics->getTickerCount(READ_AMP_TOTAL_READ_BYTES));
-}
-
-TEST_F(DBTest2, ReadAmpBitmapLiveInCacheAfterDBClose) {
-  if (dbname_.find("dev/shm") != std::string::npos) {
-    // /dev/shm dont support getting a unique file id, this mean that
-    // running this test on /dev/shm will fail because lru_cache will load
-    // the blocks again regardless of them being already in the cache
-    return;
-  }
-
-  std::shared_ptr<Cache> lru_cache = NewLRUCache(1024 * 1024 * 1024);
-  std::shared_ptr<Statistics> stats = rocksdb::CreateDBStatistics();
-
-  Options options = CurrentOptions();
-  BlockBasedTableOptions bbto;
-  // Disable delta encoding to make it easier to calculate read amplification
-  bbto.use_delta_encoding = false;
-  // Huge block cache to make it easier to calculate read amplification
-  bbto.block_cache = lru_cache;
-  bbto.read_amp_bytes_per_bit = 16;
-  options.table_factory.reset(NewBlockBasedTableFactory(bbto));
-  options.statistics = stats;
-  DestroyAndReopen(options);
-
-  const int kNumEntries = 10000;
-
-  Random rnd(301);
-  for (int i = 0; i < kNumEntries; i++) {
-    ASSERT_OK(Put(Key(i), RandomString(&rnd, 100)));
-  }
-  ASSERT_OK(Flush());
-
-  Close();
-  Reopen(options);
-
-  uint64_t total_useful_bytes = 0;
-  std::set<int> read_keys;
-  std::string value;
-  // Iter1: Read half the DB, Read even keys
-  // Key(0), Key(2), Key(4), Key(6), Key(8), ...
-  for (int i = 0; i < kNumEntries; i += 2) {
-    std::string k = Key(i);
-    ASSERT_OK(db_->Get(ReadOptions(), k, &value));
-
-    if (read_keys.find(i) == read_keys.end()) {
-      auto ik = InternalKey(k, 0, ValueType::kTypeValue);
-      total_useful_bytes += GetEncodedEntrySize(ik.size(), value.size());
-      read_keys.insert(i);
-    }
-  }
-
-  size_t total_useful_bytes_iter1 =
-      options.statistics->getTickerCount(READ_AMP_ESTIMATE_USEFUL_BYTES);
-  size_t total_loaded_bytes_iter1 =
-      options.statistics->getTickerCount(READ_AMP_TOTAL_READ_BYTES);
-
-  Close();
-  std::shared_ptr<Statistics> new_statistics = rocksdb::CreateDBStatistics();
-  // Destroy old statistics obj that the blocks in lru_cache are pointing to
-  options.statistics.reset();
-  // Use the statistics object that we just created
-  options.statistics = new_statistics;
-  Reopen(options);
-
-  // Iter2: Read half the DB, Read odd keys
-  // Key(1), Key(3), Key(5), Key(7), Key(9), ...
-  for (int i = 1; i < kNumEntries; i += 2) {
-    std::string k = Key(i);
-    ASSERT_OK(db_->Get(ReadOptions(), k, &value));
-
-    if (read_keys.find(i) == read_keys.end()) {
-      auto ik = InternalKey(k, 0, ValueType::kTypeValue);
-      total_useful_bytes += GetEncodedEntrySize(ik.size(), value.size());
-      read_keys.insert(i);
-    }
-  }
-
-  size_t total_useful_bytes_iter2 =
-      options.statistics->getTickerCount(READ_AMP_ESTIMATE_USEFUL_BYTES);
-  size_t total_loaded_bytes_iter2 =
-      options.statistics->getTickerCount(READ_AMP_TOTAL_READ_BYTES);
-
-  // We reached read_amp of 100% because we read all the keys in the DB
-  ASSERT_EQ(total_useful_bytes_iter1 + total_useful_bytes_iter2,
-            total_loaded_bytes_iter1 + total_loaded_bytes_iter2);
-}
-
-#ifndef ROCKSDB_LITE
-TEST_F(DBTest2, AutomaticCompactionOverlapManualCompaction) {
-  Options options = CurrentOptions();
-  options.num_levels = 3;
-  options.IncreaseParallelism(20);
-  DestroyAndReopen(options);
-
-  ASSERT_OK(Put(Key(0), "a"));
-  ASSERT_OK(Put(Key(5), "a"));
-  ASSERT_OK(Flush());
-
-  ASSERT_OK(Put(Key(10), "a"));
-  ASSERT_OK(Put(Key(15), "a"));
-  ASSERT_OK(Flush());
-
-  CompactRangeOptions cro;
-  cro.change_level = true;
-  cro.target_level = 2;
-  ASSERT_OK(db_->CompactRange(cro, nullptr, nullptr));
-
-  // Trivial move 2 files to L2
-  ASSERT_EQ("0,0,2", FilesPerLevel());
-
-  // While the compaction is running, we will create 2 new files that
-  // can fit in L2, these 2 files will be moved to L2 and overlap with
-  // the running compaction and break the LSM consistency.
-  rocksdb::SyncPoint::GetInstance()->SetCallBack(
-      "CompactionJob::Run():Start", [&](void* arg) {
-        ASSERT_OK(
-            dbfull()->SetOptions({{"level0_file_num_compaction_trigger", "2"},
-                                  {"max_bytes_for_level_base", "1"}}));
-        ASSERT_OK(Put(Key(6), "a"));
-        ASSERT_OK(Put(Key(7), "a"));
-        ASSERT_OK(Flush());
-
-        ASSERT_OK(Put(Key(8), "a"));
-        ASSERT_OK(Put(Key(9), "a"));
-        ASSERT_OK(Flush());
-      });
-  rocksdb::SyncPoint::GetInstance()->EnableProcessing();
-
-  // Run a manual compaction that will compact the 2 files in L2
-  // into 1 file in L2
-  cro.exclusive_manual_compaction = false;
-  cro.bottommost_level_compaction = BottommostLevelCompaction::kForce;
-  ASSERT_OK(db_->CompactRange(cro, nullptr, nullptr));
-
-  rocksdb::SyncPoint::GetInstance()->DisableProcessing();
-}
-
-TEST_F(DBTest2, ManualCompactionOverlapManualCompaction) {
-  Options options = CurrentOptions();
-  options.num_levels = 2;
-  options.IncreaseParallelism(20);
-  options.disable_auto_compactions = true;
-  DestroyAndReopen(options);
-
-  ASSERT_OK(Put(Key(0), "a"));
-  ASSERT_OK(Put(Key(5), "a"));
-  ASSERT_OK(Flush());
-
-  ASSERT_OK(Put(Key(10), "a"));
-  ASSERT_OK(Put(Key(15), "a"));
-  ASSERT_OK(Flush());
-
-  ASSERT_OK(db_->CompactRange(CompactRangeOptions(), nullptr, nullptr));
-
-  // Trivial move 2 files to L1
-  ASSERT_EQ("0,2", FilesPerLevel());
-
-  std::function<void()> bg_manual_compact = [&]() {
-    std::string k1 = Key(6);
-    std::string k2 = Key(9);
-    Slice k1s(k1);
-    Slice k2s(k2);
-    CompactRangeOptions cro;
-    cro.exclusive_manual_compaction = false;
-    ASSERT_OK(db_->CompactRange(cro, &k1s, &k2s));
-  };
-  std::thread bg_thread;
-
-  // While the compaction is running, we will create 2 new files that
-  // can fit in L1, these 2 files will be moved to L1 and overlap with
-  // the running compaction and break the LSM consistency.
-  std::atomic<bool> flag(false);
-  rocksdb::SyncPoint::GetInstance()->SetCallBack(
-      "CompactionJob::Run():Start", [&](void* arg) {
-        if (flag.exchange(true)) {
-          // We want to make sure to call this callback only once
-          return;
-        }
-        ASSERT_OK(Put(Key(6), "a"));
-        ASSERT_OK(Put(Key(7), "a"));
-        ASSERT_OK(Flush());
-
-        ASSERT_OK(Put(Key(8), "a"));
-        ASSERT_OK(Put(Key(9), "a"));
-        ASSERT_OK(Flush());
-
-        // Start a non-exclusive manual compaction in a bg thread
-        bg_thread = std::thread(bg_manual_compact);
-        // This manual compaction conflict with the other manual compaction
-        // so it should wait until the first compaction finish
-        env_->SleepForMicroseconds(1000000);
-      });
-  rocksdb::SyncPoint::GetInstance()->EnableProcessing();
-
-  // Run a manual compaction that will compact the 2 files in L1
-  // into 1 file in L1
-  CompactRangeOptions cro;
-  cro.exclusive_manual_compaction = false;
-  cro.bottommost_level_compaction = BottommostLevelCompaction::kForce;
-  ASSERT_OK(db_->CompactRange(cro, nullptr, nullptr));
-  bg_thread.join();
-
-  rocksdb::SyncPoint::GetInstance()->DisableProcessing();
-}
-#endif  // ROCKSDB_LITE
-
 }  // namespace rocksdb

 int main(int argc, char** argv) {
@@ -30,8 +30,6 @@ SpecialEnv::SpecialEnv(Env* base)
  manifest_write_error_.store(false, std::memory_order_release);
  log_write_error_.store(false, std::memory_order_release);
  random_file_open_counter_.store(0, std::memory_order_relaxed);
-  delete_count_.store(0, std::memory_order_relaxed);
-  num_open_wal_file_.store(0);
  log_write_slowdown_ = 0;
  bytes_written_ = 0;
  sync_counter_ = 0;
@@ -732,7 +730,7 @@ double DBTestBase::CompressionRatioAtLevel(int level, int cf) {

 int DBTestBase::TotalTableFiles(int cf, int levels) {
  if (levels == -1) {
-    levels = (cf == 0) ? db_->NumberLevels() : db_->NumberLevels(handles_[1]);
+    levels = CurrentOptions().num_levels;
  }
  int result = 0;
  for (int level = 0; level < levels; level++) {
@@ -1076,96 +1074,36 @@ std::vector<std::uint64_t> DBTestBase::ListTableFiles(Env* env,
  return file_numbers;
 }

-void DBTestBase::VerifyDBFromMap(std::map<std::string, std::string> true_data,
-                                 size_t* total_reads_res, bool tailing_iter) {
-  size_t total_reads = 0;
-
-  for (auto& kv : true_data) {
-    ASSERT_EQ(Get(kv.first), kv.second);
-    total_reads++;
-  }
-
-  // Normal Iterator
-  {
-    int iter_cnt = 0;
-    ReadOptions ro;
-    ro.total_order_seek = true;
-    Iterator* iter = db_->NewIterator(ro);
-    // Verify Iterator::Next()
-    iter_cnt = 0;
-    auto data_iter = true_data.begin();
-    for (iter->SeekToFirst(); iter->Valid(); iter->Next(), data_iter++) {
-      ASSERT_EQ(iter->key().ToString(), data_iter->first);
-      ASSERT_EQ(iter->value().ToString(), data_iter->second);
-      iter_cnt++;
-      total_reads++;
-    }
-    ASSERT_EQ(data_iter, true_data.end()) << iter_cnt << " / "
-                                          << true_data.size();
-
-    // Verify Iterator::Prev()
-    iter_cnt = 0;
-    auto data_rev = true_data.rbegin();
-    for (iter->SeekToLast(); iter->Valid(); iter->Prev(), data_rev++) {
-      ASSERT_EQ(iter->key().ToString(), data_rev->first);
-      ASSERT_EQ(iter->value().ToString(), data_rev->second);
-      iter_cnt++;
-      total_reads++;
-    }
-    ASSERT_EQ(data_rev, true_data.rend()) << iter_cnt << " / "
-                                          << true_data.size();
-
-    // Verify Iterator::Seek()
-    for (auto kv : true_data) {
-      iter->Seek(kv.first);
-      ASSERT_EQ(kv.first, iter->key().ToString());
-      ASSERT_EQ(kv.second, iter->value().ToString());
-      total_reads++;
-    }
-
-    delete iter;
-  }
-
-  if (tailing_iter) {
 #ifndef ROCKSDB_LITE
-    // Tailing iterator
-    int iter_cnt = 0;
-    ReadOptions ro;
-    ro.tailing = true;
-    ro.total_order_seek = true;
-    Iterator* iter = db_->NewIterator(ro);

-    // Verify ForwardIterator::Next()
-    iter_cnt = 0;
-    auto data_iter = true_data.begin();
-    for (iter->SeekToFirst(); iter->Valid(); iter->Next(), data_iter++) {
-      ASSERT_EQ(iter->key().ToString(), data_iter->first);
-      ASSERT_EQ(iter->value().ToString(), data_iter->second);
-      iter_cnt++;
-      total_reads++;
+Status DBTestBase::GenerateAndAddExternalFile(const Options options,
+                                              std::vector<int> keys,
+                                              size_t file_id) {
+  std::string file_path =
+      test::TmpDir(env_) + "/sst_files/" + ToString(file_id);
+  SstFileWriter sst_file_writer(EnvOptions(), options, options.comparator);
+
+  Status s = sst_file_writer.Open(file_path);
+  if (!s.ok()) {
+    return s;
+  }
+  for (auto& entry : keys) {
+    std::string k = Key(entry);
+    std::string v = k + ToString(file_id);
+    s = sst_file_writer.Add(k, v);
+    if (!s.ok()) {
+      return s;
    }
-    ASSERT_EQ(data_iter, true_data.end()) << iter_cnt << " / "
-                                          << true_data.size();
+  }
+  s = sst_file_writer.Finish();

-    // Verify ForwardIterator::Seek()
-    for (auto kv : true_data) {
-      iter->Seek(kv.first);
-      ASSERT_EQ(kv.first, iter->key().ToString());
-      ASSERT_EQ(kv.second, iter->value().ToString());
-      total_reads++;
-    }
-
-    delete iter;
-#endif  // ROCKSDB_LITE
+  if (s.ok()) {
+    s = db_->AddFile(std::vector<std::string>(1, file_path));
  }

-  if (total_reads_res) {
-    *total_reads_res = total_reads;
-  }
+  return s;
 }

-#ifndef ROCKSDB_LITE
-
 uint64_t DBTestBase::GetNumberOfSstFilesForColumnFamily(
    DB* db, std::string column_family_name) {
  std::vector<LiveFileMetaData> metadata;
@@ -221,7 +221,7 @@ class SpecialEnv : public EnvWrapper {
          // Drop writes on the floor
          return Status::OK();
        } else if (env_->no_space_.load(std::memory_order_acquire)) {
-          return Status::NoSpace("No space left on device");
+          return Status::IOError("No space left on device");
        } else {
          env_->bytes_written_ += data.size();
          return base_->Append(data);
@@ -285,10 +285,7 @@ class SpecialEnv : public EnvWrapper {
    class WalFile : public WritableFile {
     public:
      WalFile(SpecialEnv* env, unique_ptr<WritableFile>&& b)
-          : env_(env), base_(std::move(b)) {
-        env_->num_open_wal_file_.fetch_add(1);
-      }
-      virtual ~WalFile() { env_->num_open_wal_file_.fetch_add(-1); }
+          : env_(env), base_(std::move(b)) {}
      Status Append(const Slice& data) override {
 #if !(defined NDEBUG) || !defined(OS_WIN)
        TEST_SYNC_POINT("SpecialEnv::WalFile::Append:1");
@@ -310,18 +307,7 @@ class SpecialEnv : public EnvWrapper {
        return s;
      }
      Status Truncate(uint64_t size) override { return base_->Truncate(size); }
-      Status Close() override {
-// SyncPoint is not supported in Released Windows Mode.
-#if !(defined NDEBUG) || !defined(OS_WIN)
-        // Check preallocation size
-        // preallocation size is never passed to base file.
-        size_t preallocation_size = preallocation_block_size();
-        TEST_SYNC_POINT_CALLBACK("DBTestWalFile.GetPreallocationStatus",
-                                 &preallocation_size);
-#endif  // !(defined NDEBUG) || !defined(OS_WIN)
-
-        return base_->Close();
-      }
+      Status Close() override { return base_->Close(); }
      Status Flush() override { return base_->Flush(); }
      Status Sync() override {
        ++env_->sync_counter_;
@@ -457,11 +443,6 @@ class SpecialEnv : public EnvWrapper {
           addon_time_.load();
  }

-  virtual Status DeleteFile(const std::string& fname) override {
-    delete_count_.fetch_add(1);
-    return target()->DeleteFile(fname);
-  }
-
  Random rnd_;
  port::Mutex rnd_mutex_;  // Lock to pretect rnd_

@@ -489,9 +470,6 @@ class SpecialEnv : public EnvWrapper {
  // Slow down every log write, in micro-seconds.
  std::atomic<int> log_write_slowdown_;

-  // Number of WAL files that are still open for write.
-  std::atomic<int> num_open_wal_file_;
-
  bool count_random_reads_;
  anon::AtomicCounter random_read_counter_;
  std::atomic<size_t> random_read_bytes_counter_;
@@ -516,8 +494,6 @@ class SpecialEnv : public EnvWrapper {

  std::atomic<int64_t> addon_time_;

-  std::atomic<int> delete_count_;
-
  bool time_elapse_only_sleep_;

  bool no_sleep_;
@@ -821,11 +797,10 @@ class DBTestBase : public testing::Test {

  std::vector<std::uint64_t> ListTableFiles(Env* env, const std::string& path);

-  void VerifyDBFromMap(std::map<std::string, std::string> true_data,
-                       size_t* total_reads_res = nullptr,
-                       bool tailing_iter = false);
-
 #ifndef ROCKSDB_LITE
+  Status GenerateAndAddExternalFile(const Options options,
+                                    std::vector<int> keys, size_t file_id);
+
  uint64_t GetNumberOfSstFilesForColumnFamily(DB* db,
                                              std::string column_family_name);
 #endif  // ROCKSDB_LITE
@@ -637,132 +637,10 @@ TEST_P(DBTestUniversalCompactionParallel, UniversalCompactionParallel) {
  }
 }

-TEST_P(DBTestUniversalCompactionParallel, PickByFileNumberBug) {
-  Options options = CurrentOptions();
-  options.compaction_style = kCompactionStyleUniversal;
-  options.num_levels = num_levels_;
-  options.write_buffer_size = 1 * 1024;  // 1KB
-  options.level0_file_num_compaction_trigger = 7;
-  options.max_background_compactions = 2;
-  options.target_file_size_base = 1024 * 1024;  // 1MB
-
-  // Disable size amplifiction compaction
-  options.compaction_options_universal.max_size_amplification_percent =
-      UINT_MAX;
-  DestroyAndReopen(options);
-
-  rocksdb::SyncPoint::GetInstance()->LoadDependency(
-      {{"DBTestUniversalCompactionParallel::PickByFileNumberBug:0",
-        "BackgroundCallCompaction:0"},
-       {"UniversalCompactionPicker::PickCompaction:Return",
-        "DBTestUniversalCompactionParallel::PickByFileNumberBug:1"},
-       {"DBTestUniversalCompactionParallel::PickByFileNumberBug:2",
-        "CompactionJob::Run():Start"}});
-
-  int total_picked_compactions = 0;
-  rocksdb::SyncPoint::GetInstance()->SetCallBack(
-      "UniversalCompactionPicker::PickCompaction:Return", [&](void* arg) {
-        if (arg) {
-          total_picked_compactions++;
-        }
-      });
-
-  rocksdb::SyncPoint::GetInstance()->EnableProcessing();
-
-  // Write 7 files to trigger compaction
-  int key_idx = 1;
-  for (int i = 1; i <= 70; i++) {
-    std::string k = Key(key_idx++);
-    ASSERT_OK(Put(k, k));
-    if (i % 10 == 0) {
-      ASSERT_OK(Flush());
-    }
-  }
-
-  // Wait for the 1st background compaction process to start
-  TEST_SYNC_POINT("DBTestUniversalCompactionParallel::PickByFileNumberBug:0");
-  TEST_SYNC_POINT("DBTestUniversalCompactionParallel::PickByFileNumberBug:1");
-  rocksdb::SyncPoint::GetInstance()->ClearTrace();
-
-  // Write 3 files while 1st compaction is held
-  // These 3 files have different sizes to avoid compacting based on size_ratio
-  int num_keys = 1000;
-  for (int i = 0; i < 3; i++) {
-    for (int j = 1; j <= num_keys; j++) {
-      std::string k = Key(key_idx++);
-      ASSERT_OK(Put(k, k));
-    }
-    ASSERT_OK(Flush());
-    num_keys -= 100;
-  }
-
-  // Wait for the 2nd background compaction process to start
-  TEST_SYNC_POINT("DBTestUniversalCompactionParallel::PickByFileNumberBug:0");
-  TEST_SYNC_POINT("DBTestUniversalCompactionParallel::PickByFileNumberBug:1");
-
-  // Hold the 1st and 2nd compaction from finishing
-  TEST_SYNC_POINT("DBTestUniversalCompactionParallel::PickByFileNumberBug:2");
-  dbfull()->TEST_WaitForCompact();
-
-  // Although 2 compaction threads started, the second one did not compact
-  // anything because the number of files not being compacted is less than
-  // level0_file_num_compaction_trigger
-  EXPECT_EQ(total_picked_compactions, 1);
-  EXPECT_EQ(TotalTableFiles(), 4);
-
-  // Stop SyncPoint and destroy the DB and reopen it again
-  rocksdb::SyncPoint::GetInstance()->ClearTrace();
-  rocksdb::SyncPoint::GetInstance()->DisableProcessing();
-  key_idx = 1;
-  total_picked_compactions = 0;
-  DestroyAndReopen(options);
-
-  rocksdb::SyncPoint::GetInstance()->EnableProcessing();
-
-  // Write 7 files to trigger compaction
-  for (int i = 1; i <= 70; i++) {
-    std::string k = Key(key_idx++);
-    ASSERT_OK(Put(k, k));
-    if (i % 10 == 0) {
-      ASSERT_OK(Flush());
-    }
-  }
-
-  // Wait for the 1st background compaction process to start
-  TEST_SYNC_POINT("DBTestUniversalCompactionParallel::PickByFileNumberBug:0");
-  TEST_SYNC_POINT("DBTestUniversalCompactionParallel::PickByFileNumberBug:1");
-  rocksdb::SyncPoint::GetInstance()->ClearTrace();
-
-  // Write 8 files while 1st compaction is held
-  // These 8 files have different sizes to avoid compacting based on size_ratio
-  num_keys = 1000;
-  for (int i = 0; i < 8; i++) {
-    for (int j = 1; j <= num_keys; j++) {
-      std::string k = Key(key_idx++);
-      ASSERT_OK(Put(k, k));
-    }
-    ASSERT_OK(Flush());
-    num_keys -= 100;
-  }
-
-  // Wait for the 2nd background compaction process to start
-  TEST_SYNC_POINT("DBTestUniversalCompactionParallel::PickByFileNumberBug:0");
-  TEST_SYNC_POINT("DBTestUniversalCompactionParallel::PickByFileNumberBug:1");
-
-  // Hold the 1st and 2nd compaction from finishing
-  TEST_SYNC_POINT("DBTestUniversalCompactionParallel::PickByFileNumberBug:2");
-  dbfull()->TEST_WaitForCompact();
-
-  // This time we will trigger a compaction because of size ratio and
-  // another compaction because of number of files that are not compacted
-  // greater than 7
-  EXPECT_GE(total_picked_compactions, 2);
-}
-
 INSTANTIATE_TEST_CASE_P(DBTestUniversalCompactionParallel,
                        DBTestUniversalCompactionParallel,
                        ::testing::Combine(::testing::Values(1, 10),
-                                           ::testing::Values(false)));
+                                           ::testing::Bool()));

 TEST_P(DBTestUniversalCompaction, UniversalCompactionOptions) {
  Options options = CurrentOptions();
@@ -1118,13 +996,13 @@ TEST_P(DBTestUniversalCompaction, UniversalCompactionFourPaths) {
  ASSERT_EQ(1, GetSstFileCount(options.db_paths[1].path));
  ASSERT_EQ(0, GetSstFileCount(dbname_));

-  // (1, 2, 4) -> (3, 4)
+  // (1, 2, 4)
  GenerateNewFile(&rnd, &key_idx);
  ASSERT_EQ(1, GetSstFileCount(options.db_paths[2].path));
  ASSERT_EQ(1, GetSstFileCount(options.db_paths[1].path));
-  ASSERT_EQ(0, GetSstFileCount(dbname_));
+  ASSERT_EQ(1, GetSstFileCount(dbname_));

-  // (1, 3, 4) -> (8)
+  // (1, 1, 2, 4) -> (8)
  GenerateNewFile(&rnd, &key_idx);
  ASSERT_EQ(1, GetSstFileCount(options.db_paths[3].path));

@@ -1138,22 +1016,22 @@ TEST_P(DBTestUniversalCompaction, UniversalCompactionFourPaths) {
  ASSERT_EQ(1, GetSstFileCount(options.db_paths[3].path));
  ASSERT_EQ(1, GetSstFileCount(options.db_paths[1].path));

-  // (1, 2, 8) -> (3, 8)
+  // (1, 2, 8)
  GenerateNewFile(&rnd, &key_idx);
  ASSERT_EQ(1, GetSstFileCount(options.db_paths[3].path));
  ASSERT_EQ(1, GetSstFileCount(options.db_paths[1].path));
-  ASSERT_EQ(0, GetSstFileCount(dbname_));
+  ASSERT_EQ(1, GetSstFileCount(dbname_));

-  // (1, 3, 8) -> (4, 8)
+  // (1, 1, 2, 8) -> (4, 8)
  GenerateNewFile(&rnd, &key_idx);
  ASSERT_EQ(1, GetSstFileCount(options.db_paths[2].path));
  ASSERT_EQ(1, GetSstFileCount(options.db_paths[3].path));

-  // (1, 4, 8) -> (5, 8)
+  // (1, 4, 8)
  GenerateNewFile(&rnd, &key_idx);
  ASSERT_EQ(1, GetSstFileCount(options.db_paths[3].path));
  ASSERT_EQ(1, GetSstFileCount(options.db_paths[2].path));
-  ASSERT_EQ(0, GetSstFileCount(dbname_));
+  ASSERT_EQ(1, GetSstFileCount(dbname_));

  for (int i = 0; i < key_idx; i++) {
    auto v = Get(Key(i));
@@ -1317,12 +1195,12 @@ TEST_P(DBTestUniversalCompaction, UniversalCompactionSecondPathRatio) {
  ASSERT_EQ(1, GetSstFileCount(options.db_paths[1].path));
  ASSERT_EQ(1, GetSstFileCount(dbname_));

-  // (1, 2, 4) -> (3, 4)
+  // (1, 2, 4)
  GenerateNewFile(&rnd, &key_idx);
-  ASSERT_EQ(2, GetSstFileCount(options.db_paths[1].path));
-  ASSERT_EQ(0, GetSstFileCount(dbname_));
+  ASSERT_EQ(1, GetSstFileCount(options.db_paths[1].path));
+  ASSERT_EQ(2, GetSstFileCount(dbname_));

-  // (1, 3, 4) -> (8)
+  // (1, 1, 2, 4) -> (8)
  GenerateNewFile(&rnd, &key_idx);
  ASSERT_EQ(1, GetSstFileCount(options.db_paths[1].path));
  ASSERT_EQ(0, GetSstFileCount(dbname_));
@@ -1337,20 +1215,20 @@ TEST_P(DBTestUniversalCompaction, UniversalCompactionSecondPathRatio) {
  ASSERT_EQ(1, GetSstFileCount(options.db_paths[1].path));
  ASSERT_EQ(1, GetSstFileCount(dbname_));

-  // (1, 2, 8) -> (3, 8)
+  // (1, 2, 8)
+  GenerateNewFile(&rnd, &key_idx);
+  ASSERT_EQ(1, GetSstFileCount(options.db_paths[1].path));
+  ASSERT_EQ(2, GetSstFileCount(dbname_));
+
+  // (1, 1, 2, 8) -> (4, 8)
  GenerateNewFile(&rnd, &key_idx);
  ASSERT_EQ(2, GetSstFileCount(options.db_paths[1].path));
  ASSERT_EQ(0, GetSstFileCount(dbname_));

-  // (1, 3, 8) -> (4, 8)
+  // (1, 4, 8)
  GenerateNewFile(&rnd, &key_idx);
  ASSERT_EQ(2, GetSstFileCount(options.db_paths[1].path));
-  ASSERT_EQ(0, GetSstFileCount(dbname_));
-
-  // (1, 4, 8) -> (5, 8)
-  GenerateNewFile(&rnd, &key_idx);
-  ASSERT_EQ(2, GetSstFileCount(options.db_paths[1].path));
-  ASSERT_EQ(0, GetSstFileCount(dbname_));
+  ASSERT_EQ(1, GetSstFileCount(dbname_));

  for (int i = 0; i < key_idx; i++) {
    auto v = Get(Key(i));
@@ -9,7 +9,6 @@

 #include "db/db_test_util.h"
 #include "port/stack_trace.h"
-#include "util/fault_injection_test_env.h"
 #include "util/options_helper.h"
 #include "util/sync_point.h"

@@ -292,170 +291,7 @@ TEST_F(DBWALTest, RecoveryWithEmptyLog) {
  } while (ChangeOptions());
 }

-#if !(defined NDEBUG) || !defined(OS_WIN)
-TEST_F(DBWALTest, PreallocateBlock) {
-  Options options = CurrentOptions();
-  options.write_buffer_size = 10 * 1000 * 1000;
-  options.max_total_wal_size = 0;
-
-  size_t expected_preallocation_size = static_cast<size_t>(
-      options.write_buffer_size + options.write_buffer_size / 10);
-
-  DestroyAndReopen(options);
-
-  std::atomic<int> called(0);
-  rocksdb::SyncPoint::GetInstance()->SetCallBack(
-      "DBTestWalFile.GetPreallocationStatus", [&](void* arg) {
-        ASSERT_TRUE(arg != nullptr);
-        size_t preallocation_size = *(static_cast<size_t*>(arg));
-        ASSERT_EQ(expected_preallocation_size, preallocation_size);
-        called.fetch_add(1);
-      });
-  rocksdb::SyncPoint::GetInstance()->EnableProcessing();
-  Put("", "");
-  Flush();
-  Put("", "");
-  Close();
-  rocksdb::SyncPoint::GetInstance()->DisableProcessing();
-  ASSERT_EQ(2, called.load());
-
-  options.max_total_wal_size = 1000 * 1000;
-  expected_preallocation_size = static_cast<size_t>(options.max_total_wal_size);
-  Reopen(options);
-  called.store(0);
-  rocksdb::SyncPoint::GetInstance()->SetCallBack(
-      "DBTestWalFile.GetPreallocationStatus", [&](void* arg) {
-        ASSERT_TRUE(arg != nullptr);
-        size_t preallocation_size = *(static_cast<size_t*>(arg));
-        ASSERT_EQ(expected_preallocation_size, preallocation_size);
-        called.fetch_add(1);
-      });
-  rocksdb::SyncPoint::GetInstance()->EnableProcessing();
-  Put("", "");
-  Flush();
-  Put("", "");
-  Close();
-  rocksdb::SyncPoint::GetInstance()->DisableProcessing();
-  ASSERT_EQ(2, called.load());
-
-  options.db_write_buffer_size = 800 * 1000;
-  expected_preallocation_size =
-      static_cast<size_t>(options.db_write_buffer_size);
-  Reopen(options);
-  called.store(0);
-  rocksdb::SyncPoint::GetInstance()->SetCallBack(
-      "DBTestWalFile.GetPreallocationStatus", [&](void* arg) {
-        ASSERT_TRUE(arg != nullptr);
-        size_t preallocation_size = *(static_cast<size_t*>(arg));
-        ASSERT_EQ(expected_preallocation_size, preallocation_size);
-        called.fetch_add(1);
-      });
-  rocksdb::SyncPoint::GetInstance()->EnableProcessing();
-  Put("", "");
-  Flush();
-  Put("", "");
-  Close();
-  rocksdb::SyncPoint::GetInstance()->DisableProcessing();
-  ASSERT_EQ(2, called.load());
-
-  expected_preallocation_size = 700 * 1000;
-  std::shared_ptr<WriteBufferManager> write_buffer_manager =
-      std::make_shared<WriteBufferManager>(static_cast<uint64_t>(700 * 1000));
-  options.write_buffer_manager = write_buffer_manager;
-  Reopen(options);
-  called.store(0);
-  rocksdb::SyncPoint::GetInstance()->SetCallBack(
-      "DBTestWalFile.GetPreallocationStatus", [&](void* arg) {
-        ASSERT_TRUE(arg != nullptr);
-        size_t preallocation_size = *(static_cast<size_t*>(arg));
-        ASSERT_EQ(expected_preallocation_size, preallocation_size);
-        called.fetch_add(1);
-      });
-  rocksdb::SyncPoint::GetInstance()->EnableProcessing();
-  Put("", "");
-  Flush();
-  Put("", "");
-  Close();
-  rocksdb::SyncPoint::GetInstance()->DisableProcessing();
-  ASSERT_EQ(2, called.load());
-}
-#endif  // !(defined NDEBUG) || !defined(OS_WIN)
-
 #ifndef ROCKSDB_LITE
-TEST_F(DBWALTest, FullPurgePreservesRecycledLog) {
-  // For github issue #1303
-  for (int i = 0; i < 2; ++i) {
-    Options options = CurrentOptions();
-    options.create_if_missing = true;
-    options.recycle_log_file_num = 2;
-    if (i != 0) {
-      options.wal_dir = alternative_wal_dir_;
-    }
-
-    DestroyAndReopen(options);
-    ASSERT_OK(Put("foo", "v1"));
-    VectorLogPtr log_files;
-    ASSERT_OK(dbfull()->GetSortedWalFiles(log_files));
-    ASSERT_GT(log_files.size(), 0);
-    ASSERT_OK(Flush());
-
-    // Now the original WAL is in log_files[0] and should be marked for
-    // recycling.
-    // Verify full purge cannot remove this file.
-    JobContext job_context(0);
-    dbfull()->TEST_LockMutex();
-    dbfull()->FindObsoleteFiles(&job_context, true /* force */);
-    dbfull()->TEST_UnlockMutex();
-    dbfull()->PurgeObsoleteFiles(job_context);
-
-    if (i == 0) {
-      ASSERT_OK(
-          env_->FileExists(LogFileName(dbname_, log_files[0]->LogNumber())));
-    } else {
-      ASSERT_OK(env_->FileExists(
-          LogFileName(alternative_wal_dir_, log_files[0]->LogNumber())));
-    }
-  }
-}
-
-TEST_F(DBWALTest, GetSortedWalFiles) {
-  do {
-    CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
-    VectorLogPtr log_files;
-    ASSERT_OK(dbfull()->GetSortedWalFiles(log_files));
-    ASSERT_EQ(0, log_files.size());
-
-    ASSERT_OK(Put(1, "foo", "v1"));
-    ASSERT_OK(dbfull()->GetSortedWalFiles(log_files));
-    ASSERT_EQ(1, log_files.size());
-  } while (ChangeOptions());
-}
-
-TEST_F(DBWALTest, RecoveryWithLogDataForSomeCFs) {
-  // Test for regression of WAL cleanup missing files that don't contain data
-  // for every column family.
-  do {
-    CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
-    ASSERT_OK(Put(1, "foo", "v1"));
-    ASSERT_OK(Put(1, "foo", "v2"));
-    uint64_t earliest_log_nums[2];
-    for (int i = 0; i < 2; ++i) {
-      if (i > 0) {
-        ReopenWithColumnFamilies({"default", "pikachu"}, CurrentOptions());
-      }
-      VectorLogPtr log_files;
-      ASSERT_OK(dbfull()->GetSortedWalFiles(log_files));
-      if (log_files.size() > 0) {
-        earliest_log_nums[i] = log_files[0]->LogNumber();
-      } else {
-        earliest_log_nums[i] = port::kMaxUint64;
-      }
-    }
-    // Check at least the first WAL was cleaned up during the recovery.
-    ASSERT_LT(earliest_log_nums[0], earliest_log_nums[1]);
-  } while (ChangeOptions());
-}
-
 TEST_F(DBWALTest, RecoverWithLargeLog) {
  do {
    {
@@ -635,41 +471,6 @@ TEST_F(DBWALTest, SyncMultipleLogs) {
  ASSERT_OK(dbfull()->SyncWAL());
 }

-// Github issue 1339. Prior the fix we read sequence id from the first log to
-// a local variable, then keep increase the variable as we replay logs,
-// ignoring actual sequence id of the records. This is incorrect if some writes
-// come with WAL disabled.
-TEST_F(DBWALTest, PartOfWritesWithWALDisabled) {
-  std::unique_ptr<FaultInjectionTestEnv> fault_env(
-      new FaultInjectionTestEnv(env_));
-  Options options = CurrentOptions();
-  options.env = fault_env.get();
-  options.disable_auto_compactions = true;
-  // TODO(yiwu): fix for 2PC.
-  options.allow_2pc = false;
-  WriteOptions wal_on, wal_off;
-  wal_on.sync = true;
-  wal_on.disableWAL = false;
-  wal_off.disableWAL = true;
-  CreateAndReopenWithCF({"dummy"}, options);
-  ASSERT_OK(Put(1, "dummy", "d1", wal_on));  // seq id 1
-  ASSERT_OK(Put(1, "dummy", "d2", wal_off));
-  ASSERT_OK(Put(1, "dummy", "d3", wal_off));
-  ASSERT_OK(Put(0, "key", "v4", wal_on));  // seq id 4
-  ASSERT_OK(Flush(0));
-  ASSERT_OK(Put(0, "key", "v5", wal_on));  // seq id 5
-  ASSERT_EQ("v5", Get(0, "key"));
-  // Simulate a crash.
-  fault_env->SetFilesystemActive(false);
-  Close();
-  fault_env->ResetState();
-  ReopenWithColumnFamilies({"default", "dummy"}, options);
-  // Prior to the fix, we may incorrectly recover "v5" with sequence id = 3.
-  ASSERT_EQ("v5", Get(0, "key"));
-  // Destroy DB before destruct fault_env.
-  Destroy(options);
-}
-
 //
 // Test WAL recovery for the various modes available
 //
@@ -687,7 +488,7 @@ class RecoveryTestHelper {
  // Create WAL files with values filled in
  static void FillData(DBWALTest* test, const Options& options,
                       const size_t wal_count, size_t* count) {
-    const ImmutableDBOptions db_options(options);
+    const DBOptions& db_options = options;

    *count = 0;

@@ -1006,32 +807,6 @@ TEST_F(DBWALTest, AvoidFlushDuringRecovery) {
  ASSERT_EQ(2, TotalTableFiles());
 }

-TEST_F(DBWALTest, WalCleanupAfterAvoidFlushDuringRecovery) {
-  // Verifies WAL files that were present during recovery, but not flushed due
-  // to avoid_flush_during_recovery, will be considered for deletion at a later
-  // stage. We check at least one such file is deleted during Flush().
-  Options options = CurrentOptions();
-  options.disable_auto_compactions = true;
-  options.avoid_flush_during_recovery = true;
-  Reopen(options);
-
-  ASSERT_OK(Put("foo", "v1"));
-  Reopen(options);
-  for (int i = 0; i < 2; ++i) {
-    if (i > 0) {
-      // Flush() triggers deletion of obsolete tracked files
-      Flush();
-    }
-    VectorLogPtr log_files;
-    ASSERT_OK(dbfull()->GetSortedWalFiles(log_files));
-    if (i == 0) {
-      ASSERT_GT(log_files.size(), 0);
-    } else {
-      ASSERT_EQ(0, log_files.size());
-    }
-  }
-}
-
 TEST_F(DBWALTest, RecoverWithoutFlush) {
  Options options = CurrentOptions();
  options.avoid_flush_during_recovery = true;
@@ -1192,29 +967,6 @@ TEST_F(DBWALTest, RecoverFromCorruptedWALWithoutFlush) {

 #endif  // ROCKSDB_LITE

-TEST_F(DBWALTest, WalTermTest) {
-  Options options = CurrentOptions();
-  options.env = env_;
-  CreateAndReopenWithCF({"pikachu"}, options);
-
-  ASSERT_OK(Put(1, "foo", "bar"));
-
-  WriteOptions wo;
-  wo.sync = true;
-  wo.disableWAL = false;
-
-  WriteBatch batch;
-  batch.Put("foo", "bar");
-  batch.MarkWalTerminationPoint();
-  batch.Put("foo2", "bar2");
-
-  ASSERT_OK(dbfull()->Write(wo, &batch));
-
-  // make sure we can re-open it.
-  ASSERT_OK(TryReopenWithColumnFamilies({"default", "pikachu"}, options));
-  ASSERT_EQ("bar", Get(1, "foo"));
-  ASSERT_EQ("NOT_FOUND", Get(1, "foo2"));
-}
 }  // namespace rocksdb

 int main(int argc, char** argv) {
@@ -20,18 +20,9 @@

 namespace rocksdb {

-// kValueTypeForSeek defines the ValueType that should be passed when
-// constructing a ParsedInternalKey object for seeking to a particular
-// sequence number (since we sort sequence numbers in decreasing order
-// and the value type is embedded as the low 8 bits in the sequence
-// number in internal keys, we need to use the highest-numbered
-// ValueType, not the lowest).
-const ValueType kValueTypeForSeek = kTypeSingleDeletion;
-const ValueType kValueTypeForSeekForPrev = kTypeDeletion;
-
 uint64_t PackSequenceAndType(uint64_t seq, ValueType t) {
  assert(seq <= kMaxSequenceNumber);
-  assert(IsExtendedValueType(t));
+  assert(IsValueType(t));
  return (seq << 8) | t;
 }

@@ -40,7 +31,7 @@ void UnPackSequenceAndType(uint64_t packed, uint64_t* seq, ValueType* t) {
  *t = static_cast<ValueType>(packed & 0xff);

  assert(*seq <= kMaxSequenceNumber);
-  assert(IsExtendedValueType(*t));
+  assert(IsValueType(*t));
 }

 void AppendInternalKey(std::string* result, const ParsedInternalKey& key) {
@@ -10,7 +10,6 @@
 #pragma once
 #include <stdio.h>
 #include <string>
-#include <utility>
 #include "rocksdb/comparator.h"
 #include "rocksdb/db.h"
 #include "rocksdb/filter_policy.h"
@@ -45,34 +44,28 @@ enum ValueType : unsigned char {
  kTypeCommitXID = 0xB,                   // WAL only.
  kTypeRollbackXID = 0xC,                 // WAL only.
  kTypeNoop = 0xD,                        // WAL only.
-  kTypeColumnFamilyRangeDeletion = 0xE,   // WAL only.
-  kTypeRangeDeletion = 0xF,               // meta block
  kMaxValue = 0x7F                        // Not used for storing records.
 };

-// Defined in dbformat.cc
-extern const ValueType kValueTypeForSeek;
-extern const ValueType kValueTypeForSeekForPrev;
+// kValueTypeForSeek defines the ValueType that should be passed when
+// constructing a ParsedInternalKey object for seeking to a particular
+// sequence number (since we sort sequence numbers in decreasing order
+// and the value type is embedded as the low 8 bits in the sequence
+// number in internal keys, we need to use the highest-numbered
+// ValueType, not the lowest).
+static const ValueType kValueTypeForSeek = kTypeSingleDeletion;

-// Checks whether a type is an inline value type
-// (i.e. a type used in memtable skiplist and sst file datablock).
+// Checks whether a type is a value type (i.e. a type used in memtables and sst
+// files).
 inline bool IsValueType(ValueType t) {
  return t <= kTypeMerge || t == kTypeSingleDeletion;
 }

-// Checks whether a type is from user operation
-// kTypeRangeDeletion is in meta block so this API is separated from above
-inline bool IsExtendedValueType(ValueType t) {
-  return IsValueType(t) || t == kTypeRangeDeletion;
-}
-
 // We leave eight bits empty at the bottom so a type and sequence#
 // can be packed together into 64-bits.
 static const SequenceNumber kMaxSequenceNumber =
    ((0x1ull << 56) - 1);

-static const SequenceNumber kDisableGlobalSequenceNumber = port::kMaxUint64;
-
 struct ParsedInternalKey {
  Slice user_key;
  SequenceNumber sequence;
@@ -215,7 +208,7 @@ inline bool ParseInternalKey(const Slice& internal_key,
  result->type = static_cast<ValueType>(c);
  assert(result->type <= ValueType::kMaxValue);
  result->user_key = Slice(internal_key.data(), n - 8);
-  return IsExtendedValueType(result->type);
+  return IsValueType(result->type);
 }

 // Update the sequence number in the internal key.
@@ -359,15 +352,6 @@ class IterKey {
    return Slice(key_, key_n);
  }

-  // Copy the key into IterKey own buf_
-  void OwnKey() {
-    assert(IsKeyPinned() == true);
-
-    Reserve(key_size_);
-    memcpy(buf_, key_, key_size_);
-    key_ = buf_;
-  }
-
  // Update the sequence number in the internal key.  Guarantees not to
  // invalidate slices to the key (and the user key).
  void UpdateInternalKey(uint64_t seq, ValueType t) {
@@ -504,40 +488,4 @@ extern bool ReadKeyFromWriteBatchEntry(Slice* input, Slice* key,
 extern Status ReadRecordFromWriteBatch(Slice* input, char* tag,
                                       uint32_t* column_family, Slice* key,
                                       Slice* value, Slice* blob, Slice* xid);
-
-// When user call DeleteRange() to delete a range of keys,
-// we will store a serialized RangeTombstone in MemTable and SST.
-// the struct here is a easy-understood form
-// start/end_key_ is the start/end user key of the range to be deleted
-struct RangeTombstone {
-  Slice start_key_;
-  Slice end_key_;
-  SequenceNumber seq_;
-  explicit RangeTombstone(Slice sk, Slice ek, SequenceNumber sn)
-      : start_key_(sk), end_key_(ek), seq_(sn) {}
-
-  explicit RangeTombstone(ParsedInternalKey parsed_key, Slice value) {
-    start_key_ = parsed_key.user_key;
-    seq_ = parsed_key.sequence;
-    end_key_ = value;
-  }
-
-  // be careful to use Serialize(), allocates new memory
-  std::pair<InternalKey, Slice> Serialize() const {
-    auto key = InternalKey(start_key_, seq_, kTypeRangeDeletion);
-    Slice value = end_key_;
-    return std::make_pair(std::move(key), std::move(value));
-  }
-
-  // be careful to use SerializeKey(), allocates new memory
-  InternalKey SerializeKey() const {
-    return InternalKey(start_key_, seq_, kTypeRangeDeletion);
-  }
-
-  // be careful to use SerializeEndKey(), allocates new memory
-  InternalKey SerializeEndKey() const {
-    return InternalKey(end_key_, seq_, kTypeRangeDeletion);
-  }
-};
-
 }  // namespace rocksdb
@@ -1,510 +0,0 @@
-//  Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
-//  This source code is licensed under the BSD-style license found in the
-//  LICENSE file in the root directory of this source tree. An additional grant
-//  of patent rights can be found in the PATENTS file in the same directory.
-
-#include "db/external_sst_file_ingestion_job.h"
-
-#define __STDC_FORMAT_MACROS
-
-#include <inttypes.h>
-#include <algorithm>
-#include <string>
-#include <vector>
-
-#include "db/version_edit.h"
-#include "table/merger.h"
-#include "table/scoped_arena_iterator.h"
-#include "table/sst_file_writer_collectors.h"
-#include "table/table_builder.h"
-#include "util/file_reader_writer.h"
-#include "util/file_util.h"
-#include "util/stop_watch.h"
-#include "util/sync_point.h"
-
-namespace rocksdb {
-
-Status ExternalSstFileIngestionJob::Prepare(
-    const std::vector<std::string>& external_files_paths) {
-  Status status;
-
-  // Read the information of files we are ingesting
-  for (const std::string& file_path : external_files_paths) {
-    IngestedFileInfo file_to_ingest;
-    status = GetIngestedFileInfo(file_path, &file_to_ingest);
-    if (!status.ok()) {
-      return status;
-    }
-    files_to_ingest_.push_back(file_to_ingest);
-  }
-
-  for (const IngestedFileInfo& f : files_to_ingest_) {
-    if (f.cf_id !=
-            TablePropertiesCollectorFactory::Context::kUnknownColumnFamily &&
-        f.cf_id != cfd_->GetID()) {
-      return Status::InvalidArgument(
-          "External file column family id dont match");
-    }
-  }
-
-  const Comparator* ucmp = cfd_->internal_comparator().user_comparator();
-  auto num_files = files_to_ingest_.size();
-  if (num_files == 0) {
-    return Status::InvalidArgument("The list of files is empty");
-  } else if (num_files > 1) {
-    // Verify that passed files dont have overlapping ranges
-    autovector<const IngestedFileInfo*> sorted_files;
-    for (size_t i = 0; i < num_files; i++) {
-      sorted_files.push_back(&files_to_ingest_[i]);
-    }
-
-    std::sort(
-        sorted_files.begin(), sorted_files.end(),
-        [&ucmp](const IngestedFileInfo* info1, const IngestedFileInfo* info2) {
-          return ucmp->Compare(info1->smallest_user_key,
-                               info2->smallest_user_key) < 0;
-        });
-
-    for (size_t i = 0; i < num_files - 1; i++) {
-      if (ucmp->Compare(sorted_files[i]->largest_user_key,
-                        sorted_files[i + 1]->smallest_user_key) >= 0) {
-        return Status::NotSupported("Files have overlapping ranges");
-      }
-    }
-  }
-
-  for (IngestedFileInfo& f : files_to_ingest_) {
-    if (f.num_entries == 0) {
-      return Status::InvalidArgument("File contain no entries");
-    }
-
-    if (!f.smallest_internal_key().Valid() ||
-        !f.largest_internal_key().Valid()) {
-      return Status::Corruption("Generated table have corrupted keys");
-    }
-  }
-
-  // Copy/Move external files into DB
-  for (IngestedFileInfo& f : files_to_ingest_) {
-    f.fd = FileDescriptor(versions_->NewFileNumber(), 0, f.file_size);
-
-    const std::string path_outside_db = f.external_file_path;
-    const std::string path_inside_db =
-        TableFileName(db_options_.db_paths, f.fd.GetNumber(), f.fd.GetPathId());
-
-    if (ingestion_options_.move_files) {
-      status = env_->LinkFile(path_outside_db, path_inside_db);
-      if (status.IsNotSupported()) {
-        // Original file is on a different FS, use copy instead of hard linking
-        status = CopyFile(env_, path_outside_db, path_inside_db, 0);
-      }
-    } else {
-      status = CopyFile(env_, path_outside_db, path_inside_db, 0);
-    }
-    TEST_SYNC_POINT("DBImpl::AddFile:FileCopied");
-    if (!status.ok()) {
-      break;
-    }
-    f.internal_file_path = path_inside_db;
-  }
-
-  if (!status.ok()) {
-    // We failed, remove all files that we copied into the db
-    for (IngestedFileInfo& f : files_to_ingest_) {
-      if (f.internal_file_path == "") {
-        break;
-      }
-      Status s = env_->DeleteFile(f.internal_file_path);
-      if (!s.ok()) {
-        Log(InfoLogLevel::WARN_LEVEL, db_options_.info_log,
-            "AddFile() clean up for file %s failed : %s",
-            f.internal_file_path.c_str(), s.ToString().c_str());
-      }
-    }
-  }
-
-  return status;
-}
-
-Status ExternalSstFileIngestionJob::NeedsFlush(bool* flush_needed) {
-  SuperVersion* super_version = cfd_->GetSuperVersion();
-  Status status =
-      IngestedFilesOverlapWithMemtables(super_version, flush_needed);
-
-  if (status.ok() && *flush_needed &&
-      !ingestion_options_.allow_blocking_flush) {
-    status = Status::InvalidArgument("External file requires flush");
-  }
-  return status;
-}
-
-Status ExternalSstFileIngestionJob::Run() {
-  Status status;
-#ifndef NDEBUG
-  // We should never run the job with a memtable that is overlapping
-  // with the files we are ingesting
-  bool need_flush = false;
-  status = NeedsFlush(&need_flush);
-  assert(status.ok() && need_flush == false);
-#endif
-
-  bool consumed_seqno = false;
-  bool force_global_seqno = false;
-  const SequenceNumber last_seqno = versions_->LastSequence();
-  if (ingestion_options_.snapshot_consistency && !db_snapshots_->empty()) {
-    // We need to assign a global sequence number to all the files even
-    // if the dont overlap with any ranges since we have snapshots
-    force_global_seqno = true;
-  }
-
-  SuperVersion* super_version = cfd_->GetSuperVersion();
-  edit_.SetColumnFamily(cfd_->GetID());
-  // The levels that the files will be ingested into
-  for (IngestedFileInfo& f : files_to_ingest_) {
-    bool overlap_with_db = false;
-    status = AssignLevelForIngestedFile(super_version, &f, &overlap_with_db);
-    if (!status.ok()) {
-      return status;
-    }
-
-    if (overlap_with_db || force_global_seqno) {
-      status = AssignGlobalSeqnoForIngestedFile(&f, last_seqno + 1);
-      consumed_seqno = true;
-    } else {
-      status = AssignGlobalSeqnoForIngestedFile(&f, 0);
-    }
-
-    if (!status.ok()) {
-      return status;
-    }
-
-    edit_.AddFile(f.picked_level, f.fd.GetNumber(), f.fd.GetPathId(),
-                  f.fd.GetFileSize(), f.smallest_internal_key(),
-                  f.largest_internal_key(), f.assigned_seqno, f.assigned_seqno,
-                  false);
-  }
-
-  if (consumed_seqno) {
-    versions_->SetLastSequence(last_seqno + 1);
-  }
-
-  return status;
-}
-
-void ExternalSstFileIngestionJob::UpdateStats() {
-  // Update internal stats for new ingested files
-  uint64_t total_keys = 0;
-  uint64_t total_l0_files = 0;
-  uint64_t total_time = env_->NowMicros() - job_start_time_;
-  for (IngestedFileInfo& f : files_to_ingest_) {
-    InternalStats::CompactionStats stats(1);
-    stats.micros = total_time;
-    stats.bytes_written = f.fd.GetFileSize();
-    stats.num_output_files = 1;
-    cfd_->internal_stats()->AddCompactionStats(f.picked_level, stats);
-    cfd_->internal_stats()->AddCFStats(InternalStats::BYTES_INGESTED_ADD_FILE,
-                                       f.fd.GetFileSize());
-    total_keys += f.num_entries;
-    if (f.picked_level == 0) {
-      total_l0_files += 1;
-    }
-    Log(InfoLogLevel::INFO_LEVEL, db_options_.info_log,
-        "[AddFile] External SST file %s was ingested in L%d with path %s "
-        "(global_seqno=%" PRIu64 ")\n",
-        f.external_file_path.c_str(), f.picked_level,
-        f.internal_file_path.c_str(), f.assigned_seqno);
-  }
-  cfd_->internal_stats()->AddCFStats(InternalStats::INGESTED_NUM_KEYS_TOTAL,
-                                     total_keys);
-  cfd_->internal_stats()->AddCFStats(InternalStats::INGESTED_NUM_FILES_TOTAL,
-                                     files_to_ingest_.size());
-  cfd_->internal_stats()->AddCFStats(
-      InternalStats::INGESTED_LEVEL0_NUM_FILES_TOTAL, total_l0_files);
-}
-
-void ExternalSstFileIngestionJob::Cleanup(const Status& status) {
-  if (!status.ok()) {
-    // We failed to add the files to the database
-    // remove all the files we copied
-    for (IngestedFileInfo& f : files_to_ingest_) {
-      Status s = env_->DeleteFile(f.internal_file_path);
-      if (!s.ok()) {
-        Log(InfoLogLevel::WARN_LEVEL, db_options_.info_log,
-            "AddFile() clean up for file %s failed : %s",
-            f.internal_file_path.c_str(), s.ToString().c_str());
-      }
-    }
-  } else if (status.ok() && ingestion_options_.move_files) {
-    // The files were moved and added successfully, remove original file links
-    for (IngestedFileInfo& f : files_to_ingest_) {
-      Status s = env_->DeleteFile(f.external_file_path);
-      if (!s.ok()) {
-        Log(InfoLogLevel::WARN_LEVEL, db_options_.info_log,
-            "%s was added to DB successfully but failed to remove original "
-            "file link : %s",
-            f.external_file_path.c_str(), s.ToString().c_str());
-      }
-    }
-  }
-}
-
-Status ExternalSstFileIngestionJob::GetIngestedFileInfo(
-    const std::string& external_file, IngestedFileInfo* file_to_ingest) {
-  file_to_ingest->external_file_path = external_file;
-
-  // Get external file size
-  Status status = env_->GetFileSize(external_file, &file_to_ingest->file_size);
-  if (!status.ok()) {
-    return status;
-  }
-
-  // Create TableReader for external file
-  std::unique_ptr<TableReader> table_reader;
-  std::unique_ptr<RandomAccessFile> sst_file;
-  std::unique_ptr<RandomAccessFileReader> sst_file_reader;
-
-  status = env_->NewRandomAccessFile(external_file, &sst_file, env_options_);
-  if (!status.ok()) {
-    return status;
-  }
-  sst_file_reader.reset(new RandomAccessFileReader(std::move(sst_file)));
-
-  status = cfd_->ioptions()->table_factory->NewTableReader(
-      TableReaderOptions(*cfd_->ioptions(), env_options_,
-                         cfd_->internal_comparator()),
-      std::move(sst_file_reader), file_to_ingest->file_size, &table_reader);
-  if (!status.ok()) {
-    return status;
-  }
-
-  // Get the external file properties
-  auto props = table_reader->GetTableProperties();
-  const auto& uprops = props->user_collected_properties;
-
-  // Get table version
-  auto version_iter = uprops.find(ExternalSstFilePropertyNames::kVersion);
-  if (version_iter == uprops.end()) {
-    return Status::Corruption("External file version not found");
-  }
-  file_to_ingest->version = DecodeFixed32(version_iter->second.c_str());
-
-  auto seqno_iter = uprops.find(ExternalSstFilePropertyNames::kGlobalSeqno);
-  if (file_to_ingest->version == 2) {
-    // version 2 imply that we have global sequence number
-    if (seqno_iter == uprops.end()) {
-      return Status::Corruption(
-          "External file global sequence number not found");
-    }
-
-    // Set the global sequence number
-    file_to_ingest->original_seqno = DecodeFixed64(seqno_iter->second.c_str());
-    file_to_ingest->global_seqno_offset = props->properties_offsets.at(
-        ExternalSstFilePropertyNames::kGlobalSeqno);
-
-    if (file_to_ingest->global_seqno_offset == 0) {
-      return Status::Corruption("Was not able to find file global seqno field");
-    }
-  } else {
-    return Status::InvalidArgument("external file version is not supported");
-  }
-  // Get number of entries in table
-  file_to_ingest->num_entries = props->num_entries;
-
-  ParsedInternalKey key;
-  ReadOptions ro;
-  // During reading the external file we can cache blocks that we read into
-  // the block cache, if we later change the global seqno of this file, we will
-  // have block in cache that will include keys with wrong seqno.
-  // We need to disable fill_cache so that we read from the file without
-  // updating the block cache.
-  ro.fill_cache = false;
-  std::unique_ptr<InternalIterator> iter(table_reader->NewIterator(ro));
-
-  // Get first (smallest) key from file
-  iter->SeekToFirst();
-  if (!ParseInternalKey(iter->key(), &key)) {
-    return Status::Corruption("external file have corrupted keys");
-  }
-  if (key.sequence != 0) {
-    return Status::Corruption("external file have non zero sequence number");
-  }
-  file_to_ingest->smallest_user_key = key.user_key.ToString();
-
-  // Get last (largest) key from file
-  iter->SeekToLast();
-  if (!ParseInternalKey(iter->key(), &key)) {
-    return Status::Corruption("external file have corrupted keys");
-  }
-  if (key.sequence != 0) {
-    return Status::Corruption("external file have non zero sequence number");
-  }
-  file_to_ingest->largest_user_key = key.user_key.ToString();
-
-  file_to_ingest->cf_id = static_cast<uint32_t>(props->column_family_id);
-
-  file_to_ingest->table_properties = *props;
-
-  return status;
-}
-
-Status ExternalSstFileIngestionJob::IngestedFilesOverlapWithMemtables(
-    SuperVersion* sv, bool* overlap) {
-  // Create an InternalIterator over all memtables
-  Arena arena;
-  ReadOptions ro;
-  ro.total_order_seek = true;
-  MergeIteratorBuilder merge_iter_builder(&cfd_->internal_comparator(), &arena);
-  merge_iter_builder.AddIterator(sv->mem->NewIterator(ro, &arena));
-  sv->imm->AddIterators(ro, &merge_iter_builder);
-  ScopedArenaIterator memtable_iter(merge_iter_builder.Finish());
-
-  Status status;
-  *overlap = false;
-  for (IngestedFileInfo& f : files_to_ingest_) {
-    status =
-        IngestedFileOverlapWithIteratorRange(&f, memtable_iter.get(), overlap);
-    if (!status.ok() || *overlap == true) {
-      break;
-    }
-  }
-
-  return status;
-}
-
-Status ExternalSstFileIngestionJob::AssignLevelForIngestedFile(
-    SuperVersion* sv, IngestedFileInfo* file_to_ingest, bool* overlap_with_db) {
-  *overlap_with_db = false;
-
-  Arena arena;
-  ReadOptions ro;
-  ro.total_order_seek = true;
-
-  Status status;
-  int target_level = 0;
-  auto* vstorage = cfd_->current()->storage_info();
-  for (int lvl = 0; lvl < cfd_->NumberLevels(); lvl++) {
-    if (lvl > 0 && lvl < vstorage->base_level()) {
-      continue;
-    }
-
-    if (vstorage->NumLevelFiles(lvl) > 0) {
-      bool overlap_with_level = false;
-      MergeIteratorBuilder merge_iter_builder(&cfd_->internal_comparator(),
-                                              &arena);
-      sv->current->AddIteratorsForLevel(ro, env_options_, &merge_iter_builder,
-                                        lvl);
-      ScopedArenaIterator level_iter(merge_iter_builder.Finish());
-
-      status = IngestedFileOverlapWithIteratorRange(
-          file_to_ingest, level_iter.get(), &overlap_with_level);
-      if (!status.ok()) {
-        return status;
-      }
-
-      if (overlap_with_level) {
-        // We must use L0 or any level higher than `lvl` to be able to overwrite
-        // the keys that we overlap with in this level, We also need to assign
-        // this file a seqno to overwrite the existing keys in level `lvl`
-        *overlap_with_db = true;
-        break;
-      }
-    }
-
-    // We dont overlap with any keys in this level, but we still need to check
-    // if our file can fit in it
-
-    if (IngestedFileFitInLevel(file_to_ingest, lvl)) {
-      target_level = lvl;
-    }
-  }
-  file_to_ingest->picked_level = target_level;
-  return status;
-}
-
-Status ExternalSstFileIngestionJob::AssignGlobalSeqnoForIngestedFile(
-    IngestedFileInfo* file_to_ingest, SequenceNumber seqno) {
-  if (file_to_ingest->original_seqno == seqno) {
-    // This file already have the correct global seqno
-    return Status::OK();
-  } else if (!ingestion_options_.allow_global_seqno) {
-    return Status::InvalidArgument("Global seqno is required, but disabled");
-  } else if (file_to_ingest->global_seqno_offset == 0) {
-    return Status::InvalidArgument(
-        "Trying to set global seqno for a file that dont have a global seqno "
-        "field");
-  }
-
-  std::unique_ptr<RandomRWFile> rwfile;
-  Status status = env_->NewRandomRWFile(file_to_ingest->internal_file_path,
-                                        &rwfile, env_options_);
-  if (!status.ok()) {
-    return status;
-  }
-
-  // Write the new seqno in the global sequence number field in the file
-  std::string seqno_val;
-  PutFixed64(&seqno_val, seqno);
-  status = rwfile->Write(file_to_ingest->global_seqno_offset, seqno_val);
-  if (status.ok()) {
-    file_to_ingest->assigned_seqno = seqno;
-  }
-  return status;
-}
-
-Status ExternalSstFileIngestionJob::IngestedFileOverlapWithIteratorRange(
-    const IngestedFileInfo* file_to_ingest, InternalIterator* iter,
-    bool* overlap) {
-  auto* vstorage = cfd_->current()->storage_info();
-  auto* ucmp = vstorage->InternalComparator()->user_comparator();
-  InternalKey range_start(file_to_ingest->smallest_user_key, kMaxSequenceNumber,
-                          kValueTypeForSeek);
-  iter->Seek(range_start.Encode());
-  if (!iter->status().ok()) {
-    return iter->status();
-  }
-
-  *overlap = false;
-  if (iter->Valid()) {
-    ParsedInternalKey seek_result;
-    if (!ParseInternalKey(iter->key(), &seek_result)) {
-      return Status::Corruption("DB have corrupted keys");
-    }
-
-    if (ucmp->Compare(seek_result.user_key, file_to_ingest->largest_user_key) <=
-        0) {
-      *overlap = true;
-    }
-  }
-
-  return iter->status();
-}
-
-bool ExternalSstFileIngestionJob::IngestedFileFitInLevel(
-    const IngestedFileInfo* file_to_ingest, int level) {
-  if (level == 0) {
-    // Files can always fit in L0
-    return true;
-  }
-
-  auto* vstorage = cfd_->current()->storage_info();
-  Slice file_smallest_user_key(file_to_ingest->smallest_user_key);
-  Slice file_largest_user_key(file_to_ingest->largest_user_key);
-
-  if (vstorage->OverlapInLevel(level, &file_smallest_user_key,
-                               &file_largest_user_key)) {
-    // File overlap with another files in this level, we cannot
-    // add it to this level
-    return false;
-  }
-  if (cfd_->RangeOverlapWithCompaction(file_smallest_user_key,
-                                       file_largest_user_key, level)) {
-    // File overlap with a running compaction output that will be stored
-    // in this level, we cannot add this file to this level
-    return false;
-  }
-
-  // File did not overlap with level files, our compaction output
-  return true;
-}
-
-}  // namespace rocksdb
@@ -1,151 +0,0 @@
-//  Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
-//  This source code is licensed under the BSD-style license found in the
-//  LICENSE file in the root directory of this source tree. An additional grant
-//  of patent rights can be found in the PATENTS file in the same directory.
-
-#pragma once
-#include <string>
-#include <unordered_set>
-#include <vector>
-
-#include "db/column_family.h"
-#include "db/dbformat.h"
-#include "db/internal_stats.h"
-#include "db/snapshot_impl.h"
-#include "rocksdb/db.h"
-#include "rocksdb/env.h"
-#include "rocksdb/sst_file_writer.h"
-#include "util/autovector.h"
-#include "util/db_options.h"
-
-namespace rocksdb {
-
-struct IngestedFileInfo {
-  // External file path
-  std::string external_file_path;
-  // Smallest user key in external file
-  std::string smallest_user_key;
-  // Largest user key in external file
-  std::string largest_user_key;
-  // Sequence number for keys in external file
-  SequenceNumber original_seqno;
-  // Offset of the global sequence number field in the file, will
-  // be zero if version is 1 (global seqno is not supported)
-  size_t global_seqno_offset;
-  // External file size
-  uint64_t file_size;
-  // total number of keys in external file
-  uint64_t num_entries;
-  // Id of column family this file shoule be ingested into
-  uint32_t cf_id;
-  // TableProperties read from external file
-  TableProperties table_properties;
-  // Version of external file
-  int version;
-
-  // FileDescriptor for the file inside the DB
-  FileDescriptor fd;
-  // file path that we picked for file inside the DB
-  std::string internal_file_path = "";
-  // Global sequence number that we picked for the file inside the DB
-  SequenceNumber assigned_seqno = 0;
-  // Level inside the DB we picked for the external file.
-  int picked_level = 0;
-
-  InternalKey smallest_internal_key() const {
-    return InternalKey(smallest_user_key, assigned_seqno,
-                       ValueType::kTypeValue);
-  }
-
-  InternalKey largest_internal_key() const {
-    return InternalKey(largest_user_key, assigned_seqno, ValueType::kTypeValue);
-  }
-};
-
-class ExternalSstFileIngestionJob {
- public:
-  ExternalSstFileIngestionJob(
-      Env* env, VersionSet* versions, ColumnFamilyData* cfd,
-      const ImmutableDBOptions& db_options, const EnvOptions& env_options,
-      SnapshotList* db_snapshots,
-      const IngestExternalFileOptions& ingestion_options)
-      : env_(env),
-        versions_(versions),
-        cfd_(cfd),
-        db_options_(db_options),
-        env_options_(env_options),
-        db_snapshots_(db_snapshots),
-        ingestion_options_(ingestion_options),
-        job_start_time_(env_->NowMicros()) {}
-
-  // Prepare the job by copying external files into the DB.
-  Status Prepare(const std::vector<std::string>& external_files_paths);
-
-  // Check if we need to flush the memtable before running the ingestion job
-  // This will be true if the files we are ingesting are overlapping with any
-  // key range in the memtable.
-  // REQUIRES: Mutex held
-  Status NeedsFlush(bool* flush_needed);
-
-  // Will execute the ingestion job and prepare edit() to be applied.
-  // REQUIRES: Mutex held
-  Status Run();
-
-  // Update column family stats.
-  // REQUIRES: Mutex held
-  void UpdateStats();
-
-  // Cleanup after successfull/failed job
-  void Cleanup(const Status& status);
-
-  VersionEdit* edit() { return &edit_; }
-
-  const autovector<IngestedFileInfo>& files_to_ingest() const {
-    return files_to_ingest_;
-  }
-
- private:
-  // Open the external file and populate `file_to_ingest` with all the
-  // external information we need to ingest this file.
-  Status GetIngestedFileInfo(const std::string& external_file,
-                             IngestedFileInfo* file_to_ingest);
-
-  // Check if the files we are ingesting overlap with any memtable.
-  // REQUIRES: Mutex held
-  Status IngestedFilesOverlapWithMemtables(SuperVersion* sv, bool* overlap);
-
-  // Assign `file_to_ingest` the lowest possible level that it can
-  // be ingested to.
-  // REQUIRES: Mutex held
-  Status AssignLevelForIngestedFile(SuperVersion* sv,
-                                    IngestedFileInfo* file_to_ingest,
-                                    bool* overlap_with_db);
-
-  // Set the file global sequence number to `seqno`
-  Status AssignGlobalSeqnoForIngestedFile(IngestedFileInfo* file_to_ingest,
-                                          SequenceNumber seqno);
-
-  // Check if `file_to_ingest` key range overlap with the range `iter` represent
-  // REQUIRES: Mutex held
-  Status IngestedFileOverlapWithIteratorRange(
-      const IngestedFileInfo* file_to_ingest, InternalIterator* iter,
-      bool* overlap);
-
-  // Check if `file_to_ingest` can fit in level `level`
-  // REQUIRES: Mutex held
-  bool IngestedFileFitInLevel(const IngestedFileInfo* file_to_ingest,
-                              int level);
-
-  Env* env_;
-  VersionSet* versions_;
-  ColumnFamilyData* cfd_;
-  const ImmutableDBOptions& db_options_;
-  const EnvOptions& env_options_;
-  SnapshotList* db_snapshots_;
-  autovector<IngestedFileInfo> files_to_ingest_;
-  const IngestExternalFileOptions& ingestion_options_;
-  VersionEdit edit_;
-  uint64_t job_start_time_;
-};
-
-}  // namespace rocksdb
@@ -228,11 +228,6 @@ class FaultInjectionTest : public testing::Test,
    return Status::OK();
  }

-#if defined(__clang__)
-__attribute__((__no_sanitize__("undefined")))
-#elif __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 9)
-__attribute__((__no_sanitize_undefined__))
-#endif
  // Return the ith key
  Slice Key(int i, std::string* storage) const {
    int num = i;
@@ -410,7 +405,6 @@ TEST_P(FaultInjectionTest, WriteOptionSyncTest) {
  env_->SetFilesystemActive(false);
  NoWriteTestReopenWithFault(kResetDropAndDeleteUnsynced);
  sleeping_task_low.WakeUp();
-  sleeping_task_low.WaitUntilDone();

  ASSERT_OK(OpenDB());
  std::string val;
@@ -495,7 +489,6 @@ TEST_P(FaultInjectionTest, ManualLogSyncTest) {
  env_->SetFilesystemActive(false);
  NoWriteTestReopenWithFault(kResetDropAndDeleteUnsynced);
  sleeping_task_low.WakeUp();
-  sleeping_task_low.WaitUntilDone();

  ASSERT_OK(OpenDB());
  std::string val;
@@ -508,30 +501,6 @@ TEST_P(FaultInjectionTest, ManualLogSyncTest) {
  ASSERT_EQ(value_space, val);
 }

-TEST_P(FaultInjectionTest, WriteBatchWalTerminationTest) {
-  ReadOptions ro;
-  Options options = CurrentOptions();
-  options.env = env_;
-
-  WriteOptions wo;
-  wo.sync = true;
-  wo.disableWAL = false;
-  WriteBatch batch;
-  batch.Put("cats", "dogs");
-  batch.MarkWalTerminationPoint();
-  batch.Put("boys", "girls");
-  ASSERT_OK(db_->Write(wo, &batch));
-
-  env_->SetFilesystemActive(false);
-  NoWriteTestReopenWithFault(kResetDropAndDeleteUnsynced);
-  ASSERT_OK(OpenDB());
-
-  std::string val;
-  ASSERT_OK(db_->Get(ro, "cats", &val));
-  ASSERT_EQ("dogs", val);
-  ASSERT_EQ(db_->Get(ro, "boys", &val), Status::NotFound());
-}
-
 INSTANTIATE_TEST_CASE_P(FaultTest, FaultInjectionTest, ::testing::Bool());

 }  // namespace rocksdb
@@ -386,10 +386,10 @@ Status SetIdentityFile(Env* env, const std::string& dbname) {
  return s;
 }

-Status SyncManifest(Env* env, const ImmutableDBOptions* db_options,
+Status SyncManifest(Env* env, const DBOptions* db_options,
                    WritableFileWriter* file) {
  TEST_KILL_RANDOM("SyncManifest:0", rocksdb_kill_odds * REDUCE_ODDS2);
-  if (db_options->disable_data_sync) {
+  if (db_options->disableDataSync) {
    return Status::OK();
  } else {
    StopWatch sw(env, db_options->statistics.get(), MANIFEST_FILE_SYNC_MICROS);
@@ -20,7 +20,6 @@
 #include "rocksdb/slice.h"
 #include "rocksdb/status.h"
 #include "rocksdb/transaction_log.h"
-#include "util/db_options.h"

 namespace rocksdb {

@@ -160,7 +159,7 @@ extern Status SetCurrentFile(Env* env, const std::string& dbname,
 extern Status SetIdentityFile(Env* env, const std::string& dbname);

 // Sync manifest file `file`.
-extern Status SyncManifest(Env* env, const ImmutableDBOptions* db_options,
+extern Status SyncManifest(Env* env, const DBOptions* db_options,
                           WritableFileWriter* file);

 }  // namespace rocksdb
@@ -56,7 +56,7 @@
 namespace rocksdb {

 FlushJob::FlushJob(const std::string& dbname, ColumnFamilyData* cfd,
-                   const ImmutableDBOptions& db_options,
+                   const DBOptions& db_options,
                   const MutableCFOptions& mutable_cf_options,
                   const EnvOptions& env_options, VersionSet* versions,
                   InstrumentedMutex* db_mutex,
@@ -84,8 +84,7 @@ FlushJob::FlushJob(const std::string& dbname, ColumnFamilyData* cfd,
      output_compression_(output_compression),
      stats_(stats),
      event_logger_(event_logger),
-      measure_io_stats_(measure_io_stats),
-      pick_memtable_called(false) {
+      measure_io_stats_(measure_io_stats) {
  // Update the thread status to indicate flush.
  ReportStartedFlush();
  TEST_SYNC_POINT("FlushJob::FlushJob()");
@@ -97,7 +96,7 @@ FlushJob::~FlushJob() {

 void FlushJob::ReportStartedFlush() {
  ThreadStatusUtil::SetColumnFamily(cfd_, cfd_->ioptions()->env,
-                                    db_options_.enable_thread_tracking);
+                                    cfd_->options()->enable_thread_tracking);
  ThreadStatusUtil::SetThreadOperation(ThreadStatus::OP_FLUSH);
  ThreadStatusUtil::SetThreadOperationProperty(
      ThreadStatus::COMPACTION_JOB_ID,
@@ -122,47 +121,9 @@ void FlushJob::RecordFlushIOStats() {
  IOSTATS_RESET(bytes_written);
 }

-void FlushJob::PickMemTable() {
-  db_mutex_->AssertHeld();
-  assert(!pick_memtable_called);
-  pick_memtable_called = true;
-  // Save the contents of the earliest memtable as a new Table
-  cfd_->imm()->PickMemtablesToFlush(&mems_);
-  if (mems_.empty()) {
-    return;
-  }
-
-  ReportFlushInputSize(mems_);
-
-  // entries mems are (implicitly) sorted in ascending order by their created
-  // time. We will use the first memtable's `edit` to keep the meta info for
-  // this flush.
-  MemTable* m = mems_[0];
-  edit_ = m->GetEdits();
-  edit_->SetPrevLogNumber(0);
-  // SetLogNumber(log_num) indicates logs with number smaller than log_num
-  // will no longer be picked up for recovery.
-  edit_->SetLogNumber(mems_.back()->GetNextLogNumber());
-  edit_->SetColumnFamily(cfd_->GetID());
-
-  // path 0 for level 0 file.
-  meta_.fd = FileDescriptor(versions_->NewFileNumber(), 0, 0);
-
-  base_ = cfd_->current();
-  base_->Ref();  // it is likely that we do not need this reference
-}
-
 Status FlushJob::Run(FileMetaData* file_meta) {
-  db_mutex_->AssertHeld();
-  assert(pick_memtable_called);
  AutoThreadOperationStageUpdater stage_run(
      ThreadStatus::STAGE_FLUSH_RUN);
-  if (mems_.empty()) {
-    LogToBuffer(log_buffer_, "[%s] Nothing in memtable to flush",
-                cfd_->GetName().c_str());
-    return Status::OK();
-  }
-
  // I/O measurement variables
  PerfLevel prev_perf_level = PerfLevel::kEnableTime;
  uint64_t prev_write_nanos = 0;
@@ -178,8 +139,31 @@ Status FlushJob::Run(FileMetaData* file_meta) {
    prev_prepare_write_nanos = IOSTATS(prepare_write_nanos);
  }

+  // Save the contents of the earliest memtable as a new Table
+  FileMetaData meta;
+  autovector<MemTable*> mems;
+  cfd_->imm()->PickMemtablesToFlush(&mems);
+  if (mems.empty()) {
+    LogToBuffer(log_buffer_, "[%s] Nothing in memtable to flush",
+                cfd_->GetName().c_str());
+    return Status::OK();
+  }
+
+  ReportFlushInputSize(mems);
+
+  // entries mems are (implicitly) sorted in ascending order by their created
+  // time. We will use the first memtable's `edit` to keep the meta info for
+  // this flush.
+  MemTable* m = mems[0];
+  VersionEdit* edit = m->GetEdits();
+  edit->SetPrevLogNumber(0);
+  // SetLogNumber(log_num) indicates logs with number smaller than log_num
+  // will no longer be picked up for recovery.
+  edit->SetLogNumber(mems.back()->GetNextLogNumber());
+  edit->SetColumnFamily(cfd_->GetID());
+
  // This will release and re-acquire the mutex.
-  Status s = WriteLevel0Table();
+  Status s = WriteLevel0Table(mems, edit, &meta);

  if (s.ok() &&
      (shutting_down_->load(std::memory_order_acquire) || cfd_->IsDropped())) {
@@ -188,18 +172,18 @@ Status FlushJob::Run(FileMetaData* file_meta) {
  }

  if (!s.ok()) {
-    cfd_->imm()->RollbackMemtableFlush(mems_, meta_.fd.GetNumber());
+    cfd_->imm()->RollbackMemtableFlush(mems, meta.fd.GetNumber());
  } else {
    TEST_SYNC_POINT("FlushJob::InstallResults");
    // Replace immutable memtable with the generated Table
    s = cfd_->imm()->InstallMemtableFlushResults(
-        cfd_, mutable_cf_options_, mems_, versions_, db_mutex_,
-        meta_.fd.GetNumber(), &job_context_->memtables_to_free, db_directory_,
+        cfd_, mutable_cf_options_, mems, versions_, db_mutex_,
+        meta.fd.GetNumber(), &job_context_->memtables_to_free, db_directory_,
        log_buffer_);
  }

  if (s.ok() && file_meta != nullptr) {
-    *file_meta = meta_;
+    *file_meta = meta;
  }
  RecordFlushIOStats();

@@ -230,11 +214,17 @@ Status FlushJob::Run(FileMetaData* file_meta) {
  return s;
 }

-Status FlushJob::WriteLevel0Table() {
+Status FlushJob::WriteLevel0Table(const autovector<MemTable*>& mems,
+                                  VersionEdit* edit, FileMetaData* meta) {
  AutoThreadOperationStageUpdater stage_updater(
      ThreadStatus::STAGE_FLUSH_WRITE_L0);
  db_mutex_->AssertHeld();
  const uint64_t start_micros = db_options_.env->NowMicros();
+  // path 0 for level 0 file.
+  meta->fd = FileDescriptor(versions_->NewFileNumber(), 0, 0);
+
+  Version* base = cfd_->current();
+  base->Ref();  // it is likely that we do not need this reference
  Status s;
  {
    db_mutex_->Unlock();
@@ -247,7 +237,7 @@ Status FlushJob::WriteLevel0Table() {
    Arena arena;
    uint64_t total_num_entries = 0, total_num_deletes = 0;
    size_t total_memory_usage = 0;
-    for (MemTable* m : mems_) {
+    for (MemTable* m : mems) {
      Log(InfoLogLevel::INFO_LEVEL, db_options_.info_log,
          "[%s] [JOB %d] Flushing memtable with next log file: %" PRIu64 "\n",
          cfd_->GetName().c_str(), job_context_->job_id, m->GetNextLogNumber());
@@ -259,7 +249,7 @@ Status FlushJob::WriteLevel0Table() {

    event_logger_->Log() << "job" << job_context_->job_id << "event"
                         << "flush_started"
-                         << "num_memtables" << mems_.size() << "num_entries"
+                         << "num_memtables" << mems.size() << "num_entries"
                         << total_num_entries << "num_deletes"
                         << total_num_deletes << "memory_usage"
                         << total_memory_usage;
@@ -270,13 +260,13 @@ Status FlushJob::WriteLevel0Table() {
                             static_cast<int>(memtables.size()), &arena));
      Log(InfoLogLevel::INFO_LEVEL, db_options_.info_log,
          "[%s] [JOB %d] Level-0 flush table #%" PRIu64 ": started",
-          cfd_->GetName().c_str(), job_context_->job_id, meta_.fd.GetNumber());
+          cfd_->GetName().c_str(), job_context_->job_id, meta->fd.GetNumber());

      TEST_SYNC_POINT_CALLBACK("FlushJob::WriteLevel0Table:output_compression",
                               &output_compression_);
      s = BuildTable(
          dbname_, db_options_.env, *cfd_->ioptions(), mutable_cf_options_,
-          env_options_, cfd_->table_cache(), iter.get(), &meta_,
+          env_options_, cfd_->table_cache(), iter.get(), meta,
          cfd_->internal_comparator(), cfd_->int_tbl_prop_collector_factories(),
          cfd_->GetID(), cfd_->GetName(), existing_snapshots_,
          earliest_write_conflict_snapshot_, output_compression_,
@@ -290,39 +280,39 @@ Status FlushJob::WriteLevel0Table() {
        "[%s] [JOB %d] Level-0 flush table #%" PRIu64 ": %" PRIu64
        " bytes %s"
        "%s",
-        cfd_->GetName().c_str(), job_context_->job_id, meta_.fd.GetNumber(),
-        meta_.fd.GetFileSize(), s.ToString().c_str(),
-        meta_.marked_for_compaction ? " (needs compaction)" : "");
+        cfd_->GetName().c_str(), job_context_->job_id, meta->fd.GetNumber(),
+        meta->fd.GetFileSize(), s.ToString().c_str(),
+        meta->marked_for_compaction ? " (needs compaction)" : "");

-    if (!db_options_.disable_data_sync && output_file_directory_ != nullptr) {
+    if (!db_options_.disableDataSync && output_file_directory_ != nullptr) {
      output_file_directory_->Fsync();
    }
    TEST_SYNC_POINT("FlushJob::WriteLevel0Table");
    db_mutex_->Lock();
  }
-  base_->Unref();
+  base->Unref();

  // Note that if file_size is zero, the file has been deleted and
  // should not be added to the manifest.
-  if (s.ok() && meta_.fd.GetFileSize() > 0) {
+  if (s.ok() && meta->fd.GetFileSize() > 0) {
    // if we have more than 1 background thread, then we cannot
    // insert files directly into higher levels because some other
    // threads could be concurrently producing compacted files for
    // that key range.
    // Add file to L0
-    edit_->AddFile(0 /* level */, meta_.fd.GetNumber(), meta_.fd.GetPathId(),
-                   meta_.fd.GetFileSize(), meta_.smallest, meta_.largest,
-                   meta_.smallest_seqno, meta_.largest_seqno,
-                   meta_.marked_for_compaction);
+    edit->AddFile(0 /* level */, meta->fd.GetNumber(), meta->fd.GetPathId(),
+                  meta->fd.GetFileSize(), meta->smallest, meta->largest,
+                  meta->smallest_seqno, meta->largest_seqno,
+                  meta->marked_for_compaction);
  }

  // Note that here we treat flush as level 0 compaction in internal stats
  InternalStats::CompactionStats stats(1);
  stats.micros = db_options_.env->NowMicros() - start_micros;
-  stats.bytes_written = meta_.fd.GetFileSize();
+  stats.bytes_written = meta->fd.GetFileSize();
  cfd_->internal_stats()->AddCompactionStats(0 /* level */, stats);
  cfd_->internal_stats()->AddCFStats(InternalStats::BYTES_FLUSHED,
-                                     meta_.fd.GetFileSize());
+                                     meta->fd.GetFileSize());
  RecordFlushIOStats();
  return s;
 }
@@ -16,17 +16,12 @@
 #include <vector>
 #include <string>

-#include "db/column_family.h"
 #include "db/dbformat.h"
-#include "db/flush_scheduler.h"
-#include "db/internal_stats.h"
-#include "db/job_context.h"
+#include "db/column_family.h"
 #include "db/log_writer.h"
 #include "db/memtable_list.h"
 #include "db/snapshot_impl.h"
 #include "db/version_edit.h"
-#include "db/write_controller.h"
-#include "db/write_thread.h"
 #include "port/port.h"
 #include "rocksdb/db.h"
 #include "rocksdb/env.h"
@@ -34,11 +29,15 @@
 #include "rocksdb/transaction_log.h"
 #include "table/scoped_arena_iterator.h"
 #include "util/autovector.h"
-#include "util/db_options.h"
 #include "util/event_logger.h"
 #include "util/instrumented_mutex.h"
 #include "util/stop_watch.h"
 #include "util/thread_local.h"
+#include "db/internal_stats.h"
+#include "db/write_controller.h"
+#include "db/flush_scheduler.h"
+#include "db/write_thread.h"
+#include "db/job_context.h"

 namespace rocksdb {

@@ -54,7 +53,7 @@ class FlushJob {
  // TODO(icanadi) make effort to reduce number of parameters here
  // IMPORTANT: mutable_cf_options needs to be alive while FlushJob is alive
  FlushJob(const std::string& dbname, ColumnFamilyData* cfd,
-           const ImmutableDBOptions& db_options,
+           const DBOptions& db_options,
           const MutableCFOptions& mutable_cf_options,
           const EnvOptions& env_options, VersionSet* versions,
           InstrumentedMutex* db_mutex, std::atomic<bool>* shutting_down,
@@ -67,8 +66,6 @@ class FlushJob {

  ~FlushJob();

-  // Require db_mutex held
-  void PickMemTable();
  Status Run(FileMetaData* file_meta = nullptr);
  TableProperties GetTableProperties() const { return table_properties_; }

@@ -76,10 +73,11 @@ class FlushJob {
  void ReportStartedFlush();
  void ReportFlushInputSize(const autovector<MemTable*>& mems);
  void RecordFlushIOStats();
-  Status WriteLevel0Table();
+  Status WriteLevel0Table(const autovector<MemTable*>& mems, VersionEdit* edit,
+                          FileMetaData* meta);
  const std::string& dbname_;
  ColumnFamilyData* cfd_;
-  const ImmutableDBOptions& db_options_;
+  const DBOptions& db_options_;
  const MutableCFOptions& mutable_cf_options_;
  const EnvOptions& env_options_;
  VersionSet* versions_;
@@ -96,13 +94,6 @@ class FlushJob {
  EventLogger* event_logger_;
  TableProperties table_properties_;
  bool measure_io_stats_;
-
-  // Variables below are set by PickMemTable():
-  FileMetaData meta_;
-  autovector<MemTable*> mems_;
-  VersionEdit* edit_;
-  Version* base_;
-  bool pick_memtable_called;
 };

 }  // namespace rocksdb
@@ -28,8 +28,6 @@ class FlushJobTest : public testing::Test {
  FlushJobTest()
      : env_(Env::Default()),
        dbname_(test::TmpDir() + "/flush_job_test"),
-        options_(),
-        db_options_(options_),
        table_cache_(NewLRUCache(50000, 16)),
        write_buffer_manager_(db_options_.db_write_buffer_size),
        versions_(new VersionSet(dbname_, &db_options_, env_options_,
@@ -76,10 +74,9 @@ class FlushJobTest : public testing::Test {
  Env* env_;
  std::string dbname_;
  EnvOptions env_options_;
-  Options options_;
-  ImmutableDBOptions db_options_;
  std::shared_ptr<Cache> table_cache_;
  WriteController write_controller_;
+  DBOptions db_options_;
  WriteBufferManager write_buffer_manager_;
  ColumnFamilyOptions cf_options_;
  std::unique_ptr<VersionSet> versions_;
@@ -97,11 +94,7 @@ TEST_F(FlushJobTest, Empty) {
                     env_options_, versions_.get(), &mutex_, &shutting_down_,
                     {}, kMaxSequenceNumber, &job_context, nullptr, nullptr,
                     nullptr, kNoCompression, nullptr, &event_logger, false);
-  {
-    InstrumentedMutexLock l(&mutex_);
-    flush_job.PickMemTable();
-    ASSERT_OK(flush_job.Run());
-  }
+  ASSERT_OK(flush_job.Run());
  job_context.Clean();
 }

@@ -142,7 +135,6 @@ TEST_F(FlushJobTest, NonEmpty) {
                     nullptr, kNoCompression, nullptr, &event_logger, true);
  FileMetaData fd;
  mutex_.Lock();
-  flush_job.PickMemTable();
  ASSERT_OK(flush_job.Run(&fd));
  mutex_.Unlock();
  ASSERT_EQ(ToString(0), fd.smallest.user_key().ToString());
@@ -206,7 +198,6 @@ TEST_F(FlushJobTest, Snapshots) {
      &shutting_down_, snapshots, kMaxSequenceNumber, &job_context, nullptr,
      nullptr, nullptr, kNoCompression, nullptr, &event_logger, true);
  mutex_.Lock();
-  flush_job.PickMemTable();
  ASSERT_OK(flush_job.Run());
  mutex_.Unlock();
  mock_table_factory_->AssertSingleFile(inserted_keys);
@@ -32,24 +32,10 @@ namespace rocksdb {
 class LevelIterator : public InternalIterator {
 public:
  LevelIterator(const ColumnFamilyData* const cfd,
-                const ReadOptions& read_options,
-                const std::vector<FileMetaData*>& files)
-      : cfd_(cfd),
-        read_options_(read_options),
-        files_(files),
-        valid_(false),
-        file_index_(std::numeric_limits<uint32_t>::max()),
-        file_iter_(nullptr),
-        pinned_iters_mgr_(nullptr) {}
-
-  ~LevelIterator() {
-    // Reset current pointer
-    if (pinned_iters_mgr_ && pinned_iters_mgr_->PinningEnabled()) {
-      pinned_iters_mgr_->PinIterator(file_iter_);
-    } else {
-      delete file_iter_;
-    }
-  }
+      const ReadOptions& read_options,
+      const std::vector<FileMetaData*>& files)
+    : cfd_(cfd), read_options_(read_options), files_(files), valid_(false),
+      file_index_(std::numeric_limits<uint32_t>::max()) {}

  void SetFileIndex(uint32_t file_index) {
    assert(file_index < files_.size());
@@ -61,20 +47,10 @@ class LevelIterator : public InternalIterator {
  }
  void Reset() {
    assert(file_index_ < files_.size());
-
-    // Reset current pointer
-    if (pinned_iters_mgr_ && pinned_iters_mgr_->PinningEnabled()) {
-      pinned_iters_mgr_->PinIterator(file_iter_);
-    } else {
-      delete file_iter_;
-    }
-
-    file_iter_ = cfd_->table_cache()->NewIterator(
+    file_iter_.reset(cfd_->table_cache()->NewIterator(
        read_options_, *(cfd_->soptions()), cfd_->internal_comparator(),
        files_[file_index_]->fd, nullptr /* table_reader_ptr */, nullptr,
-        false);
-
-    file_iter_->SetPinnedItersMgr(pinned_iters_mgr_);
+        false));
  }
  void SeekToLast() override {
    status_ = Status::NotSupported("LevelIterator::SeekToLast()");
@@ -97,10 +73,6 @@ class LevelIterator : public InternalIterator {
    file_iter_->Seek(internal_key);
    valid_ = file_iter_->Valid();
  }
-  void SeekForPrev(const Slice& internal_key) override {
-    status_ = Status::NotSupported("LevelIterator::SeekForPrev()");
-    valid_ = false;
-  }
  void Next() override {
    assert(valid_);
    file_iter_->Next();
@@ -133,20 +105,6 @@ class LevelIterator : public InternalIterator {
    }
    return Status::OK();
  }
-  bool IsKeyPinned() const override {
-    return pinned_iters_mgr_ && pinned_iters_mgr_->PinningEnabled() &&
-           file_iter_->IsKeyPinned();
-  }
-  bool IsValuePinned() const override {
-    return pinned_iters_mgr_ && pinned_iters_mgr_->PinningEnabled() &&
-           file_iter_->IsValuePinned();
-  }
-  void SetPinnedItersMgr(PinnedIteratorsManager* pinned_iters_mgr) override {
-    pinned_iters_mgr_ = pinned_iters_mgr;
-    if (file_iter_) {
-      file_iter_->SetPinnedItersMgr(pinned_iters_mgr_);
-    }
-  }

 private:
  const ColumnFamilyData* const cfd_;
@@ -156,8 +114,7 @@ class LevelIterator : public InternalIterator {
  bool valid_;
  uint32_t file_index_;
  Status status_;
-  InternalIterator* file_iter_;
-  PinnedIteratorsManager* pinned_iters_mgr_;
+  std::unique_ptr<InternalIterator> file_iter_;
 };

 ForwardIterator::ForwardIterator(DBImpl* db, const ReadOptions& read_options,
@@ -178,8 +135,7 @@ ForwardIterator::ForwardIterator(DBImpl* db, const ReadOptions& read_options,
      has_iter_trimmed_for_upper_bound_(false),
      current_over_upper_bound_(false),
      is_prev_set_(false),
-      is_prev_inclusive_(false),
-      pinned_iters_mgr_(nullptr) {
+      is_prev_inclusive_(false) {
  if (sv_) {
    RebuildIterators(false);
  }
@@ -189,13 +145,6 @@ ForwardIterator::~ForwardIterator() {
  Cleanup(true);
 }

-namespace {
-// Used in PinnedIteratorsManager to release pinned SuperVersion
-static void ReleaseSuperVersionFunc(void* sv) {
-  delete reinterpret_cast<SuperVersion*>(sv);
-}
-}  // namespace
-
 void ForwardIterator::SVCleanup() {
  if (sv_ != nullptr && sv_->Unref()) {
    // Job id == 0 means that this is not our background process, but rather
@@ -204,18 +153,10 @@ void ForwardIterator::SVCleanup() {
    db_->mutex_.Lock();
    sv_->Cleanup();
    db_->FindObsoleteFiles(&job_context, false, true);
-    if (read_options_.background_purge_on_iterator_cleanup) {
-      db_->ScheduleBgLogWriterClose(&job_context);
-    }
    db_->mutex_.Unlock();
-    if (pinned_iters_mgr_ && pinned_iters_mgr_->PinningEnabled()) {
-      pinned_iters_mgr_->PinPtr(sv_, &ReleaseSuperVersionFunc);
-    } else {
-      delete sv_;
-    }
+    delete sv_;
    if (job_context.HaveSomethingToDelete()) {
-      db_->PurgeObsoleteFiles(
-          job_context, read_options_.background_purge_on_iterator_cleanup);
+      db_->PurgeObsoleteFiles(job_context);
    }
    job_context.Clean();
  }
@@ -223,21 +164,18 @@ void ForwardIterator::SVCleanup() {

 void ForwardIterator::Cleanup(bool release_sv) {
  if (mutable_iter_ != nullptr) {
-    DeleteIterator(mutable_iter_, true /* is_arena */);
+    mutable_iter_->~InternalIterator();
  }
-
  for (auto* m : imm_iters_) {
-    DeleteIterator(m, true /* is_arena */);
+    m->~InternalIterator();
  }
  imm_iters_.clear();
-
  for (auto* f : l0_iters_) {
-    DeleteIterator(f);
+    delete f;
  }
  l0_iters_.clear();
-
  for (auto* l : level_iters_) {
-    DeleteIterator(l);
+    delete l;
  }
  level_iters_.clear();

@@ -296,15 +234,9 @@ void ForwardIterator::SeekInternal(const Slice& internal_key,
  // an option to turn it off.
  if (seek_to_first || NeedToSeekImmutable(internal_key)) {
    immutable_status_ = Status::OK();
-    if (has_iter_trimmed_for_upper_bound_ &&
-        (
-            // prev_ is not set yet
-            is_prev_set_ == false ||
-            // We are doing SeekToFirst() and internal_key.size() = 0
-            seek_to_first ||
-            // prev_key_ > internal_key
-            cfd_->internal_comparator().InternalKeyComparator::Compare(
-                prev_key_.GetKey(), internal_key) > 0)) {
+    if ((has_iter_trimmed_for_upper_bound_) &&
+        (cfd_->internal_comparator().InternalKeyComparator::Compare(
+             prev_key_.GetKey(), internal_key) > 0)) {
      // Some iterators are trimmed. Need to rebuild.
      RebuildIterators(true);
      // Already seeked mutable iter, so seek again
@@ -344,7 +276,7 @@ void ForwardIterator::SeekInternal(const Slice& internal_key,
              l0[i]->largest.user_key()) > 0) {
          if (read_options_.iterate_upper_bound != nullptr) {
            has_iter_trimmed_for_upper_bound_ = true;
-            DeleteIterator(l0_iters_[i]);
+            delete l0_iters_[i];
            l0_iters_[i] = nullptr;
          }
          continue;
@@ -359,7 +291,7 @@ void ForwardIterator::SeekInternal(const Slice& internal_key,
          immutable_min_heap_.push(l0_iters_[i]);
        } else {
          has_iter_trimmed_for_upper_bound_ = true;
-          DeleteIterator(l0_iters_[i]);
+          delete l0_iters_[i];
          l0_iters_[i] = nullptr;
        }
      }
@@ -436,7 +368,7 @@ void ForwardIterator::SeekInternal(const Slice& internal_key,
          } else {
            // Nothing in this level is interesting. Remove.
            has_iter_trimmed_for_upper_bound_ = true;
-            DeleteIterator(level_iters_[level - 1]);
+            delete level_iters_[level - 1];
            level_iters_[level - 1] = nullptr;
          }
        }
@@ -549,50 +481,6 @@ Status ForwardIterator::GetProperty(std::string prop_name, std::string* prop) {
  return Status::InvalidArgument();
 }

-void ForwardIterator::SetPinnedItersMgr(
-    PinnedIteratorsManager* pinned_iters_mgr) {
-  pinned_iters_mgr_ = pinned_iters_mgr;
-  UpdateChildrenPinnedItersMgr();
-}
-
-void ForwardIterator::UpdateChildrenPinnedItersMgr() {
-  // Set PinnedIteratorsManager for mutable memtable iterator.
-  if (mutable_iter_) {
-    mutable_iter_->SetPinnedItersMgr(pinned_iters_mgr_);
-  }
-
-  // Set PinnedIteratorsManager for immutable memtable iterators.
-  for (InternalIterator* child_iter : imm_iters_) {
-    if (child_iter) {
-      child_iter->SetPinnedItersMgr(pinned_iters_mgr_);
-    }
-  }
-
-  // Set PinnedIteratorsManager for L0 files iterators.
-  for (InternalIterator* child_iter : l0_iters_) {
-    if (child_iter) {
-      child_iter->SetPinnedItersMgr(pinned_iters_mgr_);
-    }
-  }
-
-  // Set PinnedIteratorsManager for L1+ levels iterators.
-  for (LevelIterator* child_iter : level_iters_) {
-    if (child_iter) {
-      child_iter->SetPinnedItersMgr(pinned_iters_mgr_);
-    }
-  }
-}
-
-bool ForwardIterator::IsKeyPinned() const {
-  return pinned_iters_mgr_ && pinned_iters_mgr_->PinningEnabled() &&
-         current_->IsKeyPinned();
-}
-
-bool ForwardIterator::IsValuePinned() const {
-  return pinned_iters_mgr_ && pinned_iters_mgr_->PinningEnabled() &&
-         current_->IsValuePinned();
-}
-
 void ForwardIterator::RebuildIterators(bool refresh_sv) {
  // Clean up
  Cleanup(refresh_sv);
@@ -621,8 +509,6 @@ void ForwardIterator::RebuildIterators(bool refresh_sv) {
  BuildLevelIterators(vstorage);
  current_ = nullptr;
  is_prev_set_ = false;
-
-  UpdateChildrenPinnedItersMgr();
 }

 void ForwardIterator::RenewIterators() {
@@ -631,10 +517,10 @@ void ForwardIterator::RenewIterators() {
  svnew = cfd_->GetReferencedSuperVersion(&(db_->mutex_));

  if (mutable_iter_ != nullptr) {
-    DeleteIterator(mutable_iter_, true /* is_arena */);
+    mutable_iter_->~InternalIterator();
  }
  for (auto* m : imm_iters_) {
-    DeleteIterator(m, true /* is_arena */);
+    m->~InternalIterator();
  }
  imm_iters_.clear();

@@ -675,13 +561,13 @@ void ForwardIterator::RenewIterators() {
  }

  for (auto* f : l0_iters_) {
-    DeleteIterator(f);
+    delete f;
  }
  l0_iters_.clear();
  l0_iters_ = l0_iters_new;

  for (auto* l : level_iters_) {
-    DeleteIterator(l);
+    delete l;
  }
  level_iters_.clear();
  BuildLevelIterators(vstorage_new);
@@ -689,8 +575,6 @@ void ForwardIterator::RenewIterators() {
  is_prev_set_ = false;
  SVCleanup();
  sv_ = svnew;
-
-  UpdateChildrenPinnedItersMgr();
 }

 void ForwardIterator::BuildLevelIterators(const VersionStorageInfo* vstorage) {
@@ -720,11 +604,10 @@ void ForwardIterator::ResetIncompleteIterators() {
    if (!l0_iters_[i] || !l0_iters_[i]->status().IsIncomplete()) {
      continue;
    }
-    DeleteIterator(l0_iters_[i]);
+    delete l0_iters_[i];
    l0_iters_[i] = cfd_->table_cache()->NewIterator(
        read_options_, *cfd_->soptions(), cfd_->internal_comparator(),
        l0_files[i]->fd);
-    l0_iters_[i]->SetPinnedItersMgr(pinned_iters_mgr_);
  }

  for (auto* level_iter : level_iters_) {
@@ -813,7 +696,7 @@ void ForwardIterator::DeleteCurrentIter() {
    }
    if (l0_iters_[i] == current_) {
      has_iter_trimmed_for_upper_bound_ = true;
-      DeleteIterator(l0_iters_[i]);
+      delete l0_iters_[i];
      l0_iters_[i] = nullptr;
      return;
    }
@@ -825,7 +708,7 @@ void ForwardIterator::DeleteCurrentIter() {
    }
    if (level_iters_[level - 1] == current_) {
      has_iter_trimmed_for_upper_bound_ = true;
-      DeleteIterator(level_iters_[level - 1]);
+      delete level_iters_[level - 1];
      level_iters_[level - 1] = nullptr;
    }
  }
@@ -889,22 +772,6 @@ uint32_t ForwardIterator::FindFileInRange(
  return right;
 }

-void ForwardIterator::DeleteIterator(InternalIterator* iter, bool is_arena) {
-  if (iter == nullptr) {
-    return;
-  }
-
-  if (pinned_iters_mgr_ && pinned_iters_mgr_->PinningEnabled()) {
-    pinned_iters_mgr_->PinIterator(iter, is_arena);
-  } else {
-    if (is_arena) {
-      iter->~InternalIterator();
-    } else {
-      delete iter;
-    }
-  }
-}
-
 }  // namespace rocksdb

 #endif  // ROCKSDB_LITE
@@ -55,10 +55,6 @@ class ForwardIterator : public InternalIterator {
                  ColumnFamilyData* cfd, SuperVersion* current_sv = nullptr);
  virtual ~ForwardIterator();

-  void SeekForPrev(const Slice& target) override {
-    status_ = Status::NotSupported("ForwardIterator::SeekForPrev()");
-    valid_ = false;
-  }
  void SeekToLast() override {
    status_ = Status::NotSupported("ForwardIterator::SeekToLast()");
    valid_ = false;
@@ -76,10 +72,6 @@ class ForwardIterator : public InternalIterator {
  virtual Slice value() const override;
  virtual Status status() const override;
  virtual Status GetProperty(std::string prop_name, std::string* prop) override;
-  virtual void SetPinnedItersMgr(
-      PinnedIteratorsManager* pinned_iters_mgr) override;
-  virtual bool IsKeyPinned() const override;
-  virtual bool IsValuePinned() const override;

  bool TEST_CheckDeletedIters(int* deleted_iters, int* num_iters);

@@ -100,14 +92,6 @@ class ForwardIterator : public InternalIterator {

  bool IsOverUpperBound(const Slice& internal_key) const;

-  // Set PinnedIteratorsManager for all children Iterators, this function should
-  // be called whenever we update children Iterators or pinned_iters_mgr_.
-  void UpdateChildrenPinnedItersMgr();
-
-  // A helper function that will release iter in the proper manner, or pass it
-  // to pinned_iters_mgr_ to release it later if pinning is enabled.
-  void DeleteIterator(InternalIterator* iter, bool is_arena = false);
-
  DBImpl* const db_;
  const ReadOptions read_options_;
  ColumnFamilyData* const cfd_;
@@ -145,7 +129,6 @@ class ForwardIterator : public InternalIterator {
  bool is_prev_set_;
  bool is_prev_inclusive_;

-  PinnedIteratorsManager* pinned_iters_mgr_;
  Arena arena_;
 };

@@ -116,9 +116,6 @@ class InlineSkipList {
    // Advance to the first entry with a key >= target
    void Seek(const char* target);

-    // Retreat to the last entry with a key <= target
-    void SeekForPrev(const char* target);
-
    // Position at the first entry in list.
    // Final state of iterator is Valid() iff list is not empty.
    void SeekToFirst();
@@ -170,10 +167,6 @@ class InlineSkipList {
    return (compare_(a, b) == 0);
  }

-  bool LessThan(const char* a, const char* b) const {
-    return (compare_(a, b) < 0);
-  }
-
  // Return true if key is greater than the data stored in "n".  Null n
  // is considered infinite.
  bool KeyIsAfterNode(const char* key, Node* n) const;
@@ -317,18 +310,6 @@ inline void InlineSkipList<Comparator>::Iterator::Seek(const char* target) {
  node_ = list_->FindGreaterOrEqual(target);
 }

-template <class Comparator>
-inline void InlineSkipList<Comparator>::Iterator::SeekForPrev(
-    const char* target) {
-  Seek(target);
-  if (!Valid()) {
-    SeekToLast();
-  }
-  while (Valid() && list_->LessThan(target, key())) {
-    Prev();
-  }
-}
-
 template <class Comparator>
 inline void InlineSkipList<Comparator>::Iterator::SeekToFirst() {
  node_ = list_->head_->Next(0);
@@ -58,8 +58,6 @@ TEST_F(InlineSkipTest, Empty) {
  key = 100;
  iter.Seek(Encode(&key));
  ASSERT_TRUE(!iter.Valid());
-  iter.SeekForPrev(Encode(&key));
-  ASSERT_TRUE(!iter.Valid());
  iter.SeekToLast();
  ASSERT_TRUE(!iter.Valid());
 }
@@ -99,11 +97,6 @@ TEST_F(InlineSkipTest, InsertAndLookup) {
    ASSERT_TRUE(iter.Valid());
    ASSERT_EQ(*(keys.begin()), Decode(iter.key()));

-    uint64_t max_key = R - 1;
-    iter.SeekForPrev(Encode(&max_key));
-    ASSERT_TRUE(iter.Valid());
-    ASSERT_EQ(*(keys.rbegin()), Decode(iter.key()));
-
    iter.SeekToFirst();
    ASSERT_TRUE(iter.Valid());
    ASSERT_EQ(*(keys.begin()), Decode(iter.key()));
@@ -134,22 +127,18 @@ TEST_F(InlineSkipTest, InsertAndLookup) {
  }

  // Backward iteration test
-  for (Key i = 0; i < R; i++) {
+  {
    InlineSkipList<TestComparator>::Iterator iter(&list);
-    iter.SeekForPrev(Encode(&i));
+    iter.SeekToLast();

    // Compare against model iterator
-    std::set<Key>::iterator model_iter = keys.upper_bound(i);
-    for (int j = 0; j < 3; j++) {
-      if (model_iter == keys.begin()) {
-        ASSERT_TRUE(!iter.Valid());
-        break;
-      } else {
-        ASSERT_TRUE(iter.Valid());
-        ASSERT_EQ(*--model_iter, Decode(iter.key()));
-        iter.Prev();
-      }
+    for (std::set<Key>::reverse_iterator model_iter = keys.rbegin();
+         model_iter != keys.rend(); ++model_iter) {
+      ASSERT_TRUE(iter.Valid());
+      ASSERT_EQ(*model_iter, Decode(iter.key()));
+      iter.Prev();
    }
+    ASSERT_TRUE(!iter.Valid());
  }
 }

@@ -615,15 +615,15 @@ void InternalStats::DumpDBStats(std::string* value) {
  // Data
  // writes: total number of write requests.
  // keys: total number of key updates issued by all the write requests
-  // commit groups: number of group commits issued to the DB. Each group can
-  //                contain one or more writes.
+  // batches: number of group commits issued to the DB. Each group can contain
+  //          one or more writes.
  // so writes/keys is the average number of put in multi-put or put
-  // writes/groups is the average group commit size.
+  // writes/batches is the average group commit size.
  //
  // The format is the same for interval stats.
  snprintf(buf, sizeof(buf),
-           "Cumulative writes: %s writes, %s keys, %s commit groups, "
-           "%.1f writes per commit group, ingest: %.2f GB, %.2f MB/s\n",
+           "Cumulative writes: %s writes, %s keys, %s batches, "
+           "%.1f writes per batch, ingest: %.2f GB, %.2f MB/s\n",
           NumberToHumanString(write_other + write_self).c_str(),
           NumberToHumanString(num_keys_written).c_str(),
           NumberToHumanString(write_self).c_str(),
@@ -654,8 +654,8 @@ void InternalStats::DumpDBStats(std::string* value) {
  uint64_t interval_num_keys_written =
      num_keys_written - db_stats_snapshot_.num_keys_written;
  snprintf(buf, sizeof(buf),
-           "Interval writes: %s writes, %s keys, %s commit groups, "
-           "%.1f writes per commit group, ingest: %.2f MB, %.2f MB/s\n",
+           "Interval writes: %s writes, %s keys, %s batches, "
+           "%.1f writes per batch, ingest: %.2f MB, %.2f MB/s\n",
           NumberToHumanString(
               interval_write_other + interval_write_self).c_str(),
           NumberToHumanString(interval_num_keys_written).c_str(),
@@ -769,13 +769,10 @@ void InternalStats::DumpCFStats(std::string* value) {
      value->append(buf);
    }
  }
+
  uint64_t flush_ingest = cf_stats_value_[BYTES_FLUSHED];
  uint64_t add_file_ingest = cf_stats_value_[BYTES_INGESTED_ADD_FILE];
  uint64_t curr_ingest = flush_ingest + add_file_ingest;
-  uint64_t ingest_files_addfile = cf_stats_value_[INGESTED_NUM_FILES_TOTAL];
-  uint64_t ingest_l0_files_addfile =
-      cf_stats_value_[INGESTED_LEVEL0_NUM_FILES_TOTAL];
-  uint64_t ingest_keys_addfile = cf_stats_value_[INGESTED_NUM_KEYS_TOTAL];
  // Cumulative summary
  double w_amp = stats_sum.bytes_written / static_cast<double>(curr_ingest + 1);
  uint64_t total_stall_count =
@@ -793,7 +790,7 @@ void InternalStats::DumpCFStats(std::string* value) {
  uint64_t interval_flush_ingest =
      flush_ingest - cf_stats_snapshot_.ingest_bytes_flush;
  uint64_t interval_add_file_inget =
-      add_file_ingest - cf_stats_snapshot_.ingest_bytes_addfile;
+      add_file_ingest - cf_stats_snapshot_.ingest_bytes_add_file;
  uint64_t interval_ingest =
      interval_flush_ingest + interval_add_file_inget + 1;
  CompactionStats interval_stats(stats_sum);
@@ -807,34 +804,13 @@ void InternalStats::DumpCFStats(std::string* value) {
  snprintf(buf, sizeof(buf), "Uptime(secs): %.1f total, %.1f interval\n",
           seconds_up, interval_seconds_up);
  value->append(buf);
+
  snprintf(buf, sizeof(buf), "Flush(GB): cumulative %.3f, interval %.3f\n",
           flush_ingest / kGB, interval_flush_ingest / kGB);
-  value->append(buf);
  snprintf(buf, sizeof(buf), "AddFile(GB): cumulative %.3f, interval %.3f\n",
           add_file_ingest / kGB, interval_add_file_inget / kGB);
  value->append(buf);

-  uint64_t interval_ingest_files_addfile =
-      ingest_files_addfile - cf_stats_snapshot_.ingest_files_addfile;
-  snprintf(buf, sizeof(buf), "AddFile(Total Files): cumulative %" PRIu64
-                             ", interval %" PRIu64 "\n",
-           ingest_files_addfile, interval_ingest_files_addfile);
-  value->append(buf);
-
-  uint64_t interval_ingest_l0_files_addfile =
-      ingest_l0_files_addfile - cf_stats_snapshot_.ingest_l0_files_addfile;
-  snprintf(buf, sizeof(buf),
-           "AddFile(L0 Files): cumulative %" PRIu64 ", interval %" PRIu64 "\n",
-           ingest_l0_files_addfile, interval_ingest_l0_files_addfile);
-  value->append(buf);
-
-  uint64_t interval_ingest_keys_addfile =
-      ingest_keys_addfile - cf_stats_snapshot_.ingest_keys_addfile;
-  snprintf(buf, sizeof(buf),
-           "AddFile(Keys): cumulative %" PRIu64 ", interval %" PRIu64 "\n",
-           ingest_keys_addfile, interval_ingest_keys_addfile);
-  value->append(buf);
-
  // Compact
  uint64_t compact_bytes_read = 0;
  uint64_t compact_bytes_write = 0;
@@ -905,10 +881,7 @@ void InternalStats::DumpCFStats(std::string* value) {
  value->append(buf);

  cf_stats_snapshot_.ingest_bytes_flush = flush_ingest;
-  cf_stats_snapshot_.ingest_bytes_addfile = add_file_ingest;
-  cf_stats_snapshot_.ingest_files_addfile = ingest_files_addfile;
-  cf_stats_snapshot_.ingest_l0_files_addfile = ingest_l0_files_addfile;
-  cf_stats_snapshot_.ingest_keys_addfile = ingest_keys_addfile;
+  cf_stats_snapshot_.ingest_bytes_add_file = add_file_ingest;
  cf_stats_snapshot_.comp_stats = stats_sum;
  cf_stats_snapshot_.stall_count = total_stall_count;
 }
@@ -60,9 +60,6 @@ class InternalStats {
    WRITE_STALLS_ENUM_MAX,
    BYTES_FLUSHED,
    BYTES_INGESTED_ADD_FILE,
-    INGESTED_NUM_FILES_TOTAL,
-    INGESTED_LEVEL0_NUM_FILES_TOTAL,
-    INGESTED_NUM_KEYS_TOTAL,
    INTERNAL_CF_STATS_ENUM_MAX,
  };

@@ -249,6 +246,7 @@ class InternalStats {
    // ColumnFamily-level stats
    CompactionStats comp_stats;
    uint64_t ingest_bytes_flush;      // Bytes written to L0 (Flush)
+    uint64_t ingest_bytes_add_file;   // Bytes written to L0 (AddFile)
    uint64_t stall_count;             // Stall count
    // Stats from compaction jobs - bytes written, bytes read, duration.
    uint64_t compact_bytes_write;
@@ -256,24 +254,15 @@ class InternalStats {
    uint64_t compact_micros;
    double seconds_up;

-    // AddFile specific stats
-    uint64_t ingest_bytes_addfile;     // Total Bytes ingested
-    uint64_t ingest_files_addfile;     // Total number of files ingested
-    uint64_t ingest_l0_files_addfile;  // Total number of files ingested to L0
-    uint64_t ingest_keys_addfile;      // Total number of keys ingested
-
    CFStatsSnapshot()
        : comp_stats(0),
          ingest_bytes_flush(0),
+          ingest_bytes_add_file(0),
          stall_count(0),
          compact_bytes_write(0),
          compact_bytes_read(0),
          compact_micros(0),
-          seconds_up(0),
-          ingest_bytes_addfile(0),
-          ingest_files_addfile(0),
-          ingest_l0_files_addfile(0),
-          ingest_keys_addfile(0) {}
+          seconds_up(0) {}
  } cf_stats_snapshot_;

  struct DBStatsSnapshot {
@@ -387,9 +376,6 @@ class InternalStats {
    WRITE_STALLS_ENUM_MAX,
    BYTES_FLUSHED,
    BYTES_INGESTED_ADD_FILE,
-    INGESTED_NUM_FILES_TOTAL,
-    INGESTED_LEVEL0_NUM_FILES_TOTAL,
-    INGESTED_NUM_KEYS_TOTAL,
    INTERNAL_CF_STATS_ENUM_MAX,
  };

@@ -12,6 +12,7 @@
 #include <string>
 #include <vector>

+#include "db/column_family.h"
 #include "db/log_writer.h"

 namespace rocksdb {
@@ -55,10 +56,6 @@ struct JobContext {
  // a list of log files that we need to delete
  std::vector<uint64_t> log_delete_files;

-  // a list of log files that we need to preserve during full purge since they
-  // will be reused later
-  std::vector<uint64_t> log_recycle_files;
-
  // a list of manifest files that we need to delete
  std::vector<std::string> manifest_delete_files;

@@ -754,43 +754,8 @@ TEST_F(EventListenerTest, MemTableSealedListenerTest) {
    ASSERT_OK(Flush());
  }
 }
+} // namespace rocksdb

-class ColumnFamilyHandleDeletionStartedListener : public EventListener {
- private:
-  std::vector<std::string> cfs_;
-  int counter;
-
- public:
-  explicit ColumnFamilyHandleDeletionStartedListener(
-      const std::vector<std::string>& cfs)
-      : cfs_(cfs), counter(0) {
-    cfs_.insert(cfs_.begin(), kDefaultColumnFamilyName);
-  }
-  void OnColumnFamilyHandleDeletionStarted(
-      ColumnFamilyHandle* handle) override {
-    ASSERT_EQ(cfs_[handle->GetID()], handle->GetName());
-    counter++;
-  }
-  int getCounter() { return counter; }
-};
-
-TEST_F(EventListenerTest, ColumnFamilyHandleDeletionStartedListenerTest) {
-  std::vector<std::string> cfs{"pikachu", "eevee", "Mewtwo"};
-  auto listener =
-      std::make_shared<ColumnFamilyHandleDeletionStartedListener>(cfs);
-  Options options;
-  options.create_if_missing = true;
-  options.listeners.push_back(listener);
-  CreateAndReopenWithCF(cfs, options);
-  ASSERT_EQ(handles_.size(), 4);
-  delete handles_[3];
-  delete handles_[2];
-  delete handles_[1];
-  handles_.resize(1);
-  ASSERT_EQ(listener->getCounter(), 3);
-}
-
-}  // namespace rocksdb

 #endif  // ROCKSDB_LITE

@@ -81,8 +81,6 @@ class Writer {
  WritableFileWriter* file() { return dest_.get(); }
  const WritableFileWriter* file() const { return dest_.get(); }

-  uint64_t get_log_number() const { return log_number_; }
-
 private:
  unique_ptr<WritableFileWriter> dest_;
  size_t block_offset_;       // Current offset in block
@@ -122,16 +122,6 @@ void ManagedIterator::Seek(const Slice& user_key) {
  SeekInternal(user_key, false);
 }

-void ManagedIterator::SeekForPrev(const Slice& user_key) {
-  MILock l(&in_use_, this);
-  if (NeedToRebuild()) {
-    RebuildIterator();
-  }
-  assert(mutable_iter_ != nullptr);
-  mutable_iter_->SeekForPrev(user_key);
-  UpdateCurrent();
-}
-
 void ManagedIterator::SeekInternal(const Slice& user_key, bool seek_to_first) {
  if (NeedToRebuild()) {
    RebuildIterator();
@@ -43,7 +43,6 @@ class ManagedIterator : public Iterator {
  virtual bool Valid() const override;
  void SeekToFirst() override;
  virtual void Seek(const Slice& target) override;
-  virtual void SeekForPrev(const Slice& target) override;
  virtual void Next() override;
  virtual Slice key() const override;
  virtual Slice value() const override;
@@ -44,7 +44,8 @@ MemTableOptions::MemTableOptions(const ImmutableCFOptions& ioptions,
              static_cast<double>(mutable_cf_options.write_buffer_size) *
              mutable_cf_options.memtable_prefix_bloom_size_ratio) *
          8u),
-      memtable_huge_page_size(mutable_cf_options.memtable_huge_page_size),
+      memtable_prefix_bloom_huge_page_tlb_size(
+          mutable_cf_options.memtable_prefix_bloom_huge_page_tlb_size),
      inplace_update_support(ioptions.inplace_update_support),
      inplace_update_num_locks(mutable_cf_options.inplace_update_num_locks),
      inplace_callback(ioptions.inplace_callback),
@@ -62,15 +63,11 @@ MemTable::MemTable(const InternalKeyComparator& cmp,
      moptions_(ioptions, mutable_cf_options),
      refs_(0),
      kArenaBlockSize(OptimizeBlockSize(moptions_.arena_block_size)),
-      arena_(moptions_.arena_block_size,
-             mutable_cf_options.memtable_huge_page_size),
+      arena_(moptions_.arena_block_size, 0),
      allocator_(&arena_, write_buffer_manager),
      table_(ioptions.memtable_factory->CreateMemTableRep(
          comparator_, &allocator_, ioptions.prefix_extractor,
          ioptions.info_log)),
-      range_del_table_(SkipListFactory().CreateMemTableRep(
-          comparator_, &allocator_, nullptr /* transform */,
-          ioptions.info_log)),
      data_size_(0),
      num_entries_(0),
      num_deletes_(0),
@@ -95,7 +92,7 @@ MemTable::MemTable(const InternalKeyComparator& cmp,
    prefix_bloom_.reset(new DynamicBloom(
        &allocator_, moptions_.memtable_prefix_bloom_bits,
        ioptions.bloom_locality, 6 /* hard coded 6 probes */, nullptr,
-        moptions_.memtable_huge_page_size, ioptions.info_log));
+        moptions_.memtable_prefix_bloom_huge_page_tlb_size, ioptions.info_log));
  }
 }

@@ -104,7 +101,6 @@ MemTable::~MemTable() { assert(refs_ == 0); }
 size_t MemTable::ApproximateMemoryUsage() {
  size_t arena_usage = arena_.ApproximateMemoryUsage();
  size_t table_usage = table_->ApproximateMemoryUsage();
-  table_usage += range_del_table_->ApproximateMemoryUsage();
  // let MAX_USAGE =  std::numeric_limits<size_t>::max()
  // then if arena_usage + total_usage >= MAX_USAGE, return MAX_USAGE.
  // the following variation is to avoid numeric overflow.
@@ -126,9 +122,8 @@ bool MemTable::ShouldFlushNow() const {

  // If arena still have room for new block allocation, we can safely say it
  // shouldn't flush.
-  auto allocated_memory = table_->ApproximateMemoryUsage() +
-                          range_del_table_->ApproximateMemoryUsage() +
-                          arena_.MemoryAllocatedBytes();
+  auto allocated_memory =
+      table_->ApproximateMemoryUsage() + arena_.MemoryAllocatedBytes();

  // if we can still allocate one more block without exceeding the
  // over-allocation ratio, then we should not flush.
@@ -223,17 +218,13 @@ const char* EncodeKey(std::string* scratch, const Slice& target) {

 class MemTableIterator : public InternalIterator {
 public:
-  MemTableIterator(const MemTable& mem, const ReadOptions& read_options,
-                   Arena* arena, bool use_range_del_table = false)
+  MemTableIterator(
+      const MemTable& mem, const ReadOptions& read_options, Arena* arena)
      : bloom_(nullptr),
        prefix_extractor_(mem.prefix_extractor_),
-        comparator_(mem.comparator_),
        valid_(false),
-        arena_mode_(arena != nullptr),
-        value_pinned_(!mem.GetMemTableOptions()->inplace_update_support) {
-    if (use_range_del_table) {
-      iter_ = mem.range_del_table_->GetIterator(arena);
-    } else if (prefix_extractor_ != nullptr && !read_options.total_order_seek) {
+        arena_mode_(arena != nullptr) {
+    if (prefix_extractor_ != nullptr && !read_options.total_order_seek) {
      bloom_ = mem.prefix_bloom_.get();
      iter_ = mem.table_->GetDynamicPrefixIterator(arena);
    } else {
@@ -280,28 +271,6 @@ class MemTableIterator : public InternalIterator {
    iter_->Seek(k, nullptr);
    valid_ = iter_->Valid();
  }
-  virtual void SeekForPrev(const Slice& k) override {
-    PERF_TIMER_GUARD(seek_on_memtable_time);
-    PERF_COUNTER_ADD(seek_on_memtable_count, 1);
-    if (bloom_ != nullptr) {
-      if (!bloom_->MayContain(
-              prefix_extractor_->Transform(ExtractUserKey(k)))) {
-        PERF_COUNTER_ADD(bloom_memtable_miss_count, 1);
-        valid_ = false;
-        return;
-      } else {
-        PERF_COUNTER_ADD(bloom_memtable_hit_count, 1);
-      }
-    }
-    iter_->Seek(k, nullptr);
-    valid_ = iter_->Valid();
-    if (!Valid()) {
-      SeekToLast();
-    }
-    while (Valid() && comparator_.comparator.Compare(k, key()) < 0) {
-      Prev();
-    }
-  }
  virtual void SeekToFirst() override {
    iter_->SeekToFirst();
    valid_ = iter_->Valid();
@@ -337,19 +306,12 @@ class MemTableIterator : public InternalIterator {
    return true;
  }

-  virtual bool IsValuePinned() const override {
-    // memtable value is always pinned, except if we allow inplace update.
-    return value_pinned_;
-  }
-
 private:
  DynamicBloom* bloom_;
  const SliceTransform* const prefix_extractor_;
-  const MemTable::KeyComparator comparator_;
  MemTableRep::Iterator* iter_;
  bool valid_;
  bool arena_mode_;
-  bool value_pinned_;

  // No copying allowed
  MemTableIterator(const MemTableIterator&);
@@ -363,14 +325,6 @@ InternalIterator* MemTable::NewIterator(const ReadOptions& read_options,
  return new (mem) MemTableIterator(*this, read_options, arena);
 }

-InternalIterator* MemTable::NewRangeTombstoneIterator(
-    const ReadOptions& read_options, Arena* arena) {
-  assert(arena != nullptr);
-  auto mem = arena->AllocateAligned(sizeof(MemTableIterator));
-  return new (mem) MemTableIterator(*this, read_options, arena,
-                                    true /* use_range_del_table */);
-}
-
 port::RWMutex* MemTable::GetLock(const Slice& key) {
  static murmur_hash hash;
  return &locks_[hash(key) % locks_.size()];
@@ -379,7 +333,6 @@ port::RWMutex* MemTable::GetLock(const Slice& key) {
 uint64_t MemTable::ApproximateSize(const Slice& start_ikey,
                                   const Slice& end_ikey) {
  uint64_t entry_count = table_->ApproximateNumEntries(start_ikey, end_ikey);
-  entry_count += range_del_table_->ApproximateNumEntries(start_ikey, end_ikey);
  if (entry_count == 0) {
    return 0;
  }
@@ -388,9 +341,9 @@ uint64_t MemTable::ApproximateSize(const Slice& start_ikey,
    return 0;
  }
  if (entry_count > n) {
-    // (range_del_)table_->ApproximateNumEntries() is just an estimate so it can
-    // be larger than actual entries we have. Cap it to entries we have to limit
-    // the inaccuracy.
+    // table_->ApproximateNumEntries() is just an estimate so it can be larger
+    // than actual entries we have. Cap it to entries we have to limit the
+    // inaccuracy.
    entry_count = n;
  }
  uint64_t data_size = data_size_.load(std::memory_order_relaxed);
@@ -413,9 +366,7 @@ void MemTable::Add(SequenceNumber s, ValueType type,
                               internal_key_size + VarintLength(val_size) +
                               val_size;
  char* buf = nullptr;
-  std::unique_ptr<MemTableRep>& table =
-      type == kTypeRangeDeletion ? range_del_table_ : table_;
-  KeyHandle handle = table->Allocate(encoded_len, &buf);
+  KeyHandle handle = table_->Allocate(encoded_len, &buf);

  char* p = EncodeVarint32(buf, internal_key_size);
  memcpy(p, key.data(), key_size);
@@ -427,7 +378,7 @@ void MemTable::Add(SequenceNumber s, ValueType type,
  memcpy(p, value.data(), val_size);
  assert((unsigned)(p + val_size - buf) == (unsigned)encoded_len);
  if (!allow_concurrent) {
-    table->Insert(handle);
+    table_->Insert(handle);

    // this is a bit ugly, but is the way to avoid locked instructions
    // when incrementing an atomic
@@ -459,7 +410,7 @@ void MemTable::Add(SequenceNumber s, ValueType type,
    assert(post_process_info == nullptr);
    UpdateFlushState();
  } else {
-    table->InsertConcurrently(handle);
+    table_->InsertConcurrently(handle);

    assert(post_process_info != nullptr);
    post_process_info->num_entries++;
@@ -557,6 +508,7 @@ static bool SaveValue(void* arg, const char* entry) {
      case kTypeDeletion:
      case kTypeSingleDeletion: {
        if (*(s->merge_in_progress)) {
+          *(s->status) = Status::OK();
          *(s->status) = MergeHelper::TimedFullMerge(
              merge_operator, s->key->user_key(), nullptr,
              merge_context->GetOperands(), s->value, s->logger, s->statistics,
@@ -580,8 +532,7 @@ static bool SaveValue(void* arg, const char* entry) {
        }
        Slice v = GetLengthPrefixedSlice(key_ptr + key_length);
        *(s->merge_in_progress) = true;
-        merge_context->PushOperand(
-            v, s->inplace_update_support == false /* operand_pinned */);
+        merge_context->PushOperand(v);
        return true;
      }
      default:
@@ -15,16 +15,17 @@
 #include <string>
 #include <vector>
 #include "db/dbformat.h"
-#include "db/memtable_allocator.h"
 #include "db/skiplist.h"
 #include "db/version_edit.h"
 #include "rocksdb/db.h"
 #include "rocksdb/env.h"
 #include "rocksdb/memtablerep.h"
-#include "util/cf_options.h"
+#include "rocksdb/immutable_options.h"
+#include "db/memtable_allocator.h"
 #include "util/concurrent_arena.h"
 #include "util/dynamic_bloom.h"
 #include "util/instrumented_mutex.h"
+#include "util/mutable_cf_options.h"

 namespace rocksdb {

@@ -40,7 +41,7 @@ struct MemTableOptions {
  size_t write_buffer_size;
  size_t arena_block_size;
  uint32_t memtable_prefix_bloom_bits;
-  size_t memtable_huge_page_size;
+  size_t memtable_prefix_bloom_huge_page_tlb_size;
  bool inplace_update_support;
  size_t inplace_update_num_locks;
  UpdateStatus (*inplace_callback)(char* existing_value,
@@ -158,9 +159,6 @@ class MemTable {
  //        those allocated in arena.
  InternalIterator* NewIterator(const ReadOptions& read_options, Arena* arena);

-  InternalIterator* NewRangeTombstoneIterator(const ReadOptions& read_options,
-                                              Arena* arena);
-
  // Add an entry into memtable that maps key to value at the
  // specified sequence number and with the specified type.
  // Typically value will be empty if type==kTypeDeletion.
@@ -234,10 +232,8 @@ class MemTable {
    num_entries_.fetch_add(update_counters.num_entries,
                           std::memory_order_relaxed);
    data_size_.fetch_add(update_counters.data_size, std::memory_order_relaxed);
-    if (update_counters.num_deletes != 0) {
-      num_deletes_.fetch_add(update_counters.num_deletes,
-                             std::memory_order_relaxed);
-    }
+    num_deletes_.fetch_add(update_counters.num_deletes,
+                           std::memory_order_relaxed);
    UpdateFlushState();
  }

@@ -347,7 +343,6 @@ class MemTable {
  ConcurrentArena arena_;
  MemTableAllocator allocator_;
  unique_ptr<MemTableRep> table_;
-  unique_ptr<MemTableRep> range_del_table_;

  // Total data size of all data inserted
  std::atomic<uint64_t> data_size_;
@@ -57,16 +57,14 @@ class MemTableListTest : public testing::Test {

    // Create a mock VersionSet
    DBOptions db_options;
-    ImmutableDBOptions immutable_db_options(db_options);
    EnvOptions env_options;
    shared_ptr<Cache> table_cache(NewLRUCache(50000, 16));
    WriteBufferManager write_buffer_manager(db_options.db_write_buffer_size);
    WriteController write_controller(10000000u);

    CreateDB();
-    VersionSet versions(dbname, &immutable_db_options, env_options,
-                        table_cache.get(), &write_buffer_manager,
-                        &write_controller);
+    VersionSet versions(dbname, &db_options, env_options, table_cache.get(),
+                        &write_buffer_manager, &write_controller);

    // Create mock default ColumnFamilyData
    ColumnFamilyOptions cf_options;
@@ -129,8 +127,9 @@ TEST_F(MemTableListTest, GetTest) {
  ImmutableCFOptions ioptions(options);

  WriteBufferManager wb(options.db_write_buffer_size);
-  MemTable* mem = new MemTable(cmp, ioptions, MutableCFOptions(options), &wb,
-                               kMaxSequenceNumber);
+  MemTable* mem =
+      new MemTable(cmp, ioptions, MutableCFOptions(options, ioptions), &wb,
+                   kMaxSequenceNumber);
  mem->Ref();

  // Write some keys to this memtable.
@@ -165,8 +164,9 @@ TEST_F(MemTableListTest, GetTest) {

  // Create another memtable and write some keys to it
  WriteBufferManager wb2(options.db_write_buffer_size);
-  MemTable* mem2 = new MemTable(cmp, ioptions, MutableCFOptions(options), &wb2,
-                                kMaxSequenceNumber);
+  MemTable* mem2 =
+      new MemTable(cmp, ioptions, MutableCFOptions(options, ioptions), &wb2,
+                   kMaxSequenceNumber);
  mem2->Ref();

  mem2->Add(++seq, kTypeDeletion, "key1", "");
@@ -229,8 +229,9 @@ TEST_F(MemTableListTest, GetFromHistoryTest) {
  ImmutableCFOptions ioptions(options);

  WriteBufferManager wb(options.db_write_buffer_size);
-  MemTable* mem = new MemTable(cmp, ioptions, MutableCFOptions(options), &wb,
-                               kMaxSequenceNumber);
+  MemTable* mem =
+      new MemTable(cmp, ioptions, MutableCFOptions(options, ioptions), &wb,
+                   kMaxSequenceNumber);
  mem->Ref();

  // Write some keys to this memtable.
@@ -271,8 +272,8 @@ TEST_F(MemTableListTest, GetFromHistoryTest) {
  list.PickMemtablesToFlush(&to_flush);
  ASSERT_EQ(1, to_flush.size());

-  s = Mock_InstallMemtableFlushResults(&list, MutableCFOptions(options),
-                                       to_flush, &to_delete);
+  s = Mock_InstallMemtableFlushResults(
+      &list, MutableCFOptions(options, ioptions), to_flush, &to_delete);
  ASSERT_OK(s);
  ASSERT_EQ(0, list.NumNotFlushed());
  ASSERT_EQ(1, list.NumFlushed());
@@ -303,8 +304,9 @@ TEST_F(MemTableListTest, GetFromHistoryTest) {

  // Create another memtable and write some keys to it
  WriteBufferManager wb2(options.db_write_buffer_size);
-  MemTable* mem2 = new MemTable(cmp, ioptions, MutableCFOptions(options), &wb2,
-                                kMaxSequenceNumber);
+  MemTable* mem2 =
+      new MemTable(cmp, ioptions, MutableCFOptions(options, ioptions), &wb2,
+                   kMaxSequenceNumber);
  mem2->Ref();

  mem2->Add(++seq, kTypeDeletion, "key1", "");
@@ -319,8 +321,8 @@ TEST_F(MemTableListTest, GetFromHistoryTest) {
  ASSERT_EQ(1, to_flush.size());

  // Flush second memtable
-  s = Mock_InstallMemtableFlushResults(&list, MutableCFOptions(options),
-                                       to_flush, &to_delete);
+  s = Mock_InstallMemtableFlushResults(
+      &list, MutableCFOptions(options, ioptions), to_flush, &to_delete);
  ASSERT_OK(s);
  ASSERT_EQ(0, list.NumNotFlushed());
  ASSERT_EQ(2, list.NumFlushed());
@@ -328,8 +330,9 @@ TEST_F(MemTableListTest, GetFromHistoryTest) {

  // Add a third memtable to push the first memtable out of the history
  WriteBufferManager wb3(options.db_write_buffer_size);
-  MemTable* mem3 = new MemTable(cmp, ioptions, MutableCFOptions(options), &wb3,
-                                kMaxSequenceNumber);
+  MemTable* mem3 =
+      new MemTable(cmp, ioptions, MutableCFOptions(options, ioptions), &wb3,
+                   kMaxSequenceNumber);
  mem3->Ref();
  list.Add(mem3, &to_delete);
  ASSERT_EQ(1, list.NumNotFlushed());
@@ -398,7 +401,7 @@ TEST_F(MemTableListTest, FlushPendingTest) {

  // Create some MemTables
  std::vector<MemTable*> tables;
-  MutableCFOptions mutable_cf_options(options);
+  MutableCFOptions mutable_cf_options(options, ioptions);
  for (int i = 0; i < num_tables; i++) {
    MemTable* mem = new MemTable(cmp, ioptions, mutable_cf_options, &wb,
                                 kMaxSequenceNumber);
@@ -536,8 +539,8 @@ TEST_F(MemTableListTest, FlushPendingTest) {
  ASSERT_FALSE(list.imm_flush_needed.load(std::memory_order_acquire));

  // Flush the 4 memtables that were picked in to_flush
-  s = Mock_InstallMemtableFlushResults(&list, MutableCFOptions(options),
-                                       to_flush, &to_delete);
+  s = Mock_InstallMemtableFlushResults(
+      &list, MutableCFOptions(options, ioptions), to_flush, &to_delete);
  ASSERT_OK(s);

  // Note:  now to_flush contains tables[0,1,2,4].  to_flush2 contains
@@ -557,7 +560,7 @@ TEST_F(MemTableListTest, FlushPendingTest) {

  // Flush the 1 memtable that was picked in to_flush2
  s = MemTableListTest::Mock_InstallMemtableFlushResults(
-      &list, MutableCFOptions(options), to_flush2, &to_delete);
+      &list, MutableCFOptions(options, ioptions), to_flush2, &to_delete);
  ASSERT_OK(s);

  // This will actually install 2 tables.  The 1 we told it to flush, and also
@@ -4,113 +4,70 @@
 //  of patent rights can be found in the PATENTS file in the same directory.
 //
 #pragma once
-#include <string>
-#include <vector>
 #include "db/dbformat.h"
 #include "rocksdb/slice.h"
+#include <string>
+#include <deque>

 namespace rocksdb {

-const std::vector<Slice> empty_operand_list;
+const std::deque<std::string> empty_operand_list;

 // The merge context for merging a user key.
 // When doing a Get(), DB will create such a class and pass it when
 // issuing Get() operation to memtables and version_set. The operands
 // will be fetched from the context when issuing partial of full merge.
 class MergeContext {
- public:
+public:
  // Clear all the operands
  void Clear() {
-    if (operand_list_) {
-      operand_list_->clear();
-      copied_operands_->clear();
+    if (operand_list) {
+      operand_list->clear();
    }
  }
-
+  // Replace all operands with merge_result, which are expected to be the
+  // merge result of them.
+  void PushPartialMergeResult(std::string& merge_result) {
+    assert (operand_list);
+    operand_list->clear();
+    operand_list->push_front(std::move(merge_result));
+  }
  // Push a merge operand
-  void PushOperand(const Slice& operand_slice, bool operand_pinned = false) {
+  void PushOperand(const Slice& operand_slice) {
    Initialize();
-    SetDirectionBackward();
-
-    if (operand_pinned) {
-      operand_list_->push_back(operand_slice);
-    } else {
-      // We need to have our own copy of the operand since it's not pinned
-      copied_operands_->emplace_back(
-          new std::string(operand_slice.data(), operand_slice.size()));
-      operand_list_->push_back(*copied_operands_->back());
-    }
+    operand_list->push_front(operand_slice.ToString());
  }
-
  // Push back a merge operand
-  void PushOperandBack(const Slice& operand_slice,
-                       bool operand_pinned = false) {
+  void PushOperandBack(const Slice& operand_slice) {
    Initialize();
-    SetDirectionForward();
-
-    if (operand_pinned) {
-      operand_list_->push_back(operand_slice);
-    } else {
-      // We need to have our own copy of the operand since it's not pinned
-      copied_operands_->emplace_back(
-          new std::string(operand_slice.data(), operand_slice.size()));
-      operand_list_->push_back(*copied_operands_->back());
-    }
+    operand_list->push_back(operand_slice.ToString());
  }
-
  // return total number of operands in the list
  size_t GetNumOperands() const {
-    if (!operand_list_) {
+    if (!operand_list) {
      return 0;
    }
-    return operand_list_->size();
+    return operand_list->size();
  }
-
  // Get the operand at the index.
-  Slice GetOperand(int index) {
-    assert(operand_list_);
-
-    SetDirectionForward();
-    return (*operand_list_)[index];
+  Slice GetOperand(int index) const {
+    assert (operand_list);
+    return (*operand_list)[index];
  }
-
  // Return all the operands.
-  const std::vector<Slice>& GetOperands() {
-    if (!operand_list_) {
+  const std::deque<std::string>& GetOperands() const {
+    if (!operand_list) {
      return empty_operand_list;
    }
-
-    SetDirectionForward();
-    return *operand_list_;
+    return *operand_list;
  }
-
- private:
+private:
  void Initialize() {
-    if (!operand_list_) {
-      operand_list_.reset(new std::vector<Slice>());
-      copied_operands_.reset(new std::vector<std::unique_ptr<std::string>>());
+    if (!operand_list) {
+      operand_list.reset(new std::deque<std::string>());
    }
  }
-
-  void SetDirectionForward() {
-    if (operands_reversed_ == true) {
-      std::reverse(operand_list_->begin(), operand_list_->end());
-      operands_reversed_ = false;
-    }
-  }
-
-  void SetDirectionBackward() {
-    if (operands_reversed_ == false) {
-      std::reverse(operand_list_->begin(), operand_list_->end());
-      operands_reversed_ = true;
-    }
-  }
-
-  // List of operands
-  std::unique_ptr<std::vector<Slice>> operand_list_;
-  // Copy of operands that are not pinned.
-  std::unique_ptr<std::vector<std::unique_ptr<std::string>>> copied_operands_;
-  bool operands_reversed_ = true;
+  std::unique_ptr<std::deque<std::string>> operand_list;
 };

 } // namespace rocksdb
@@ -20,10 +20,9 @@ namespace rocksdb {

 Status MergeHelper::TimedFullMerge(const MergeOperator* merge_operator,
                                   const Slice& key, const Slice* value,
-                                   const std::vector<Slice>& operands,
+                                   const std::deque<std::string>& operands,
                                   std::string* result, Logger* logger,
-                                   Statistics* statistics, Env* env,
-                                   Slice* result_operand) {
+                                   Statistics* statistics, Env* env) {
  assert(merge_operator != nullptr);

  if (operands.size() == 0) {
@@ -33,28 +32,13 @@ Status MergeHelper::TimedFullMerge(const MergeOperator* merge_operator,
  }

  bool success;
-  Slice tmp_result_operand(nullptr, 0);
-  const MergeOperator::MergeOperationInput merge_in(key, value, operands,
-                                                    logger);
-  MergeOperator::MergeOperationOutput merge_out(*result, tmp_result_operand);
  {
    // Setup to time the merge
    StopWatchNano timer(env, statistics != nullptr);
    PERF_TIMER_GUARD(merge_operator_time_nanos);

    // Do the merge
-    success = merge_operator->FullMergeV2(merge_in, &merge_out);
-
-    if (tmp_result_operand.data()) {
-      // FullMergeV2 result is an existing operand
-      if (result_operand != nullptr) {
-        *result_operand = tmp_result_operand;
-      } else {
-        result->assign(tmp_result_operand.data(), tmp_result_operand.size());
-      }
-    } else if (result_operand) {
-      *result_operand = Slice(nullptr, 0);
-    }
+    success = merge_operator->FullMerge(key, value, operands, result, logger);

    RecordTick(statistics, MERGE_OPERATION_TOTAL_TIME,
               statistics ? timer.ElapsedNanos() : 0);
@@ -75,14 +59,13 @@ Status MergeHelper::TimedFullMerge(const MergeOperator* merge_operator,
 //       operands_ stores the list of merge operands encountered while merging.
 //       keys_[i] corresponds to operands_[i] for each i.
 Status MergeHelper::MergeUntil(InternalIterator* iter,
-                               RangeDelAggregator* range_del_agg,
                               const SequenceNumber stop_before,
                               const bool at_bottom) {
  // Get a copy of the internal key, before it's invalidated by iter->Next()
  // Also maintain the list of merge operands seen.
  assert(HasOperator());
  keys_.clear();
-  merge_context_.Clear();
+  operands_.clear();
  assert(user_merge_operator_);
  bool first_key = true;

@@ -104,7 +87,7 @@ Status MergeHelper::MergeUntil(InternalIterator* iter,
  bool hit_the_next_user_key = false;
  for (; iter->Valid(); iter->Next(), original_key_is_iter = false) {
    ParsedInternalKey ikey;
-    assert(keys_.size() == merge_context_.GetNumOperands());
+    assert(keys_.size() == operands_.size());

    if (!ParseInternalKey(iter->key(), &ikey)) {
      // stop at corrupted key
@@ -129,8 +112,17 @@ Status MergeHelper::MergeUntil(InternalIterator* iter,

    assert(IsValueType(ikey.type));
    if (ikey.type != kTypeMerge) {
+      if (ikey.type != kTypeValue && ikey.type != kTypeDeletion) {
+        // Merges operands can only be used with puts and deletions, single
+        // deletions are not supported.
+        assert(false);
+        // release build doesn't have asserts, so we return error status
+        return Status::InvalidArgument(
+            " Merges operands can only be used with puts and deletions, single "
+            "deletions are not supported.");
+      }

-      // hit a put/delete/single delete
+      // hit a put/delete
      //   => merge the put value or a nullptr with operands_
      //   => store result in operands_.back() (and update keys_.back())
      //   => change the entry type to kTypeValue for keys_.back()
@@ -150,8 +142,7 @@ Status MergeHelper::MergeUntil(InternalIterator* iter,
      const Slice* val_ptr = (kTypeValue == ikey.type) ? &val : nullptr;
      std::string merge_result;
      s = TimedFullMerge(user_merge_operator_, ikey.user_key, val_ptr,
-                         merge_context_.GetOperands(), &merge_result, logger_,
-                         stats_, env_);
+                         operands_, &merge_result, logger_, stats_, env_);

      // We store the result in keys_.back() and operands_.back()
      // if nothing went wrong (i.e.: no operand corruption on disk)
@@ -161,9 +152,9 @@ Status MergeHelper::MergeUntil(InternalIterator* iter,
        orig_ikey.type = kTypeValue;
        UpdateInternalKey(&original_key, orig_ikey.sequence, orig_ikey.type);
        keys_.clear();
-        merge_context_.Clear();
+        operands_.clear();
        keys_.emplace_front(std::move(original_key));
-        merge_context_.PushOperand(merge_result);
+        operands_.emplace_front(std::move(merge_result));
      }

      // move iter to the next entry
@@ -172,7 +163,6 @@ Status MergeHelper::MergeUntil(InternalIterator* iter,
    } else {
      // hit a merge
      //   => if there is a compaction filter, apply it.
-      //   => check for range tombstones covering the operand
      //   => merge the operand into the front of the operands_ list
      //      if not filtered
      //   => then continue because we haven't yet seen a Put/Delete.
@@ -185,10 +175,8 @@ Status MergeHelper::MergeUntil(InternalIterator* iter,
      // 1) it's included in one of the snapshots. in that case we *must* write
      // it out, no matter what compaction filter says
      // 2) it's not filtered by a compaction filter
-      if ((ikey.sequence <= latest_snapshot_ ||
-           !FilterMerge(orig_ikey.user_key, value_slice)) &&
-          (range_del_agg == nullptr ||
-           !range_del_agg->ShouldDelete(iter->key()))) {
+      if (ikey.sequence <= latest_snapshot_ ||
+          !FilterMerge(orig_ikey.user_key, value_slice)) {
        if (original_key_is_iter) {
          // this is just an optimization that saves us one memcpy
          keys_.push_front(std::move(original_key));
@@ -200,13 +188,12 @@ Status MergeHelper::MergeUntil(InternalIterator* iter,
          // original_key before
          ParseInternalKey(keys_.back(), &orig_ikey);
        }
-        merge_context_.PushOperand(value_slice,
-                                   iter->IsValuePinned() /* operand_pinned */);
+        operands_.push_front(value_slice.ToString());
      }
    }
  }

-  if (merge_context_.GetNumOperands() == 0) {
+  if (operands_.size() == 0) {
    // we filtered out all the merge operands
    return Status::OK();
  }
@@ -231,12 +218,11 @@ Status MergeHelper::MergeUntil(InternalIterator* iter,
    // do a final merge with nullptr as the existing value and say
    // bye to the merge type (it's now converted to a Put)
    assert(kTypeMerge == orig_ikey.type);
-    assert(merge_context_.GetNumOperands() >= 1);
-    assert(merge_context_.GetNumOperands() == keys_.size());
+    assert(operands_.size() >= 1);
+    assert(operands_.size() == keys_.size());
    std::string merge_result;
    s = TimedFullMerge(user_merge_operator_, orig_ikey.user_key, nullptr,
-                       merge_context_.GetOperands(), &merge_result, logger_,
-                       stats_, env_);
+                       operands_, &merge_result, logger_, stats_, env_);
    if (s.ok()) {
      // The original key encountered
      // We are certain that keys_ is not empty here (see assertions couple of
@@ -245,9 +231,9 @@ Status MergeHelper::MergeUntil(InternalIterator* iter,
      orig_ikey.type = kTypeValue;
      UpdateInternalKey(&original_key, orig_ikey.sequence, orig_ikey.type);
      keys_.clear();
-      merge_context_.Clear();
+      operands_.clear();
      keys_.emplace_front(std::move(original_key));
-      merge_context_.PushOperand(merge_result);
+      operands_.emplace_front(std::move(merge_result));
    }
  } else {
    // We haven't seen the beginning of the key nor a Put/Delete.
@@ -258,8 +244,8 @@ Status MergeHelper::MergeUntil(InternalIterator* iter,
    // partial merge returns Status::OK(). Should we change the status code
    // after a successful partial merge?
    s = Status::MergeInProgress();
-    if (merge_context_.GetNumOperands() >= 2 &&
-        merge_context_.GetNumOperands() >= min_partial_merge_operands_) {
+    if (operands_.size() >= 2 &&
+        operands_.size() >= min_partial_merge_operands_) {
      bool merge_success = false;
      std::string merge_result;
      {
@@ -267,8 +253,7 @@ Status MergeHelper::MergeUntil(InternalIterator* iter,
        PERF_TIMER_GUARD(merge_operator_time_nanos);
        merge_success = user_merge_operator_->PartialMergeMulti(
            orig_ikey.user_key,
-            std::deque<Slice>(merge_context_.GetOperands().begin(),
-                              merge_context_.GetOperands().end()),
+            std::deque<Slice>(operands_.begin(), operands_.end()),
            &merge_result, logger_);
        RecordTick(stats_, MERGE_OPERATION_TOTAL_TIME,
                   stats_ ? timer.ElapsedNanosSafe() : 0);
@@ -276,8 +261,8 @@ Status MergeHelper::MergeUntil(InternalIterator* iter,
      if (merge_success) {
        // Merging of operands (associative merge) was successful.
        // Replace operands with the merge result
-        merge_context_.Clear();
-        merge_context_.PushOperand(merge_result);
+        operands_.clear();
+        operands_.emplace_front(std::move(merge_result));
        keys_.erase(keys_.begin(), keys_.end() - 1);
      }
    }
@@ -8,11 +8,8 @@

 #include <deque>
 #include <string>
-#include <vector>

 #include "db/dbformat.h"
-#include "db/merge_context.h"
-#include "db/range_del_aggregator.h"
 #include "rocksdb/compaction_filter.h"
 #include "rocksdb/env.h"
 #include "rocksdb/slice.h"
@@ -45,13 +42,14 @@ class MergeHelper {
        latest_snapshot_(latest_snapshot),
        level_(level),
        keys_(),
+        operands_(),
        filter_timer_(env_),
        total_filter_time_(0U),
        stats_(stats) {
    assert(user_comparator_ != nullptr);
  }

-  // Wrapper around MergeOperator::FullMergeV2() that records perf statistics.
+  // Wrapper around MergeOperator::FullMerge() that records perf statistics.
  // Result of merge will be written to result if status returned is OK.
  // If operands is empty, the value will simply be copied to result.
  // Returns one of the following statuses:
@@ -59,10 +57,9 @@ class MergeHelper {
  // - Corruption: Merge operator reported unsuccessful merge.
  static Status TimedFullMerge(const MergeOperator* merge_operator,
                               const Slice& key, const Slice* value,
-                               const std::vector<Slice>& operands,
+                               const std::deque<std::string>& operands,
                               std::string* result, Logger* logger,
-                               Statistics* statistics, Env* env,
-                               Slice* result_operand = nullptr);
+                               Statistics* statistics, Env* env);

  // Merge entries until we hit
  //     - a corrupted key
@@ -72,7 +69,6 @@ class MergeHelper {
  //  or - the end of iteration
  // iter: (IN)  points to the first merge type entry
  //       (OUT) points to the first entry not included in the merge process
-  // range_del_agg: (IN) filters merge operands covered by range tombstones.
  // stop_before: (IN) a sequence number that merge should not cross.
  //                   0 means no restriction
  // at_bottom:   (IN) true if the iterator covers the bottem level, which means
@@ -87,7 +83,6 @@ class MergeHelper {
  //
  // REQUIRED: The first key in the input is not corrupted.
  Status MergeUntil(InternalIterator* iter,
-                    RangeDelAggregator* range_del_agg = nullptr,
                    const SequenceNumber stop_before = 0,
                    const bool at_bottom = false);

@@ -121,9 +116,7 @@ class MergeHelper {
  //                So keys().back() was the first key seen by iterator.
  // TODO: Re-style this comment to be like the first one
  const std::deque<std::string>& keys() const { return keys_; }
-  const std::vector<Slice>& values() const {
-    return merge_context_.GetOperands();
-  }
+  const std::deque<std::string>& values() const { return operands_; }
  uint64_t TotalFilterTime() const { return total_filter_time_; }
  bool HasOperator() const { return user_merge_operator_ != nullptr; }

@@ -140,11 +133,8 @@ class MergeHelper {

  // the scratch area that holds the result of MergeUntil
  // valid up to the next MergeUntil call
-
-  // Keeps track of the sequence of keys seen
-  std::deque<std::string> keys_;
-  // Parallel with keys_; stores the operands
-  mutable MergeContext merge_context_;
+  std::deque<std::string> keys_;    // Keeps track of the sequence of keys seen
+  std::deque<std::string> operands_;  // Parallel with keys_; stores the values

  StopWatchNano filter_timer_;
  uint64_t total_filter_time_;
@@ -169,7 +159,7 @@ class MergeOutputIterator {
 private:
  const MergeHelper* merge_helper_;
  std::deque<std::string>::const_reverse_iterator it_keys_;
-  std::vector<Slice>::const_reverse_iterator it_values_;
+  std::deque<std::string>::const_reverse_iterator it_values_;
 };

 } // namespace rocksdb
Author	SHA1	Message	Date
sdong	d903241757	Disable error as warning	2019-11-05 11:04:45 -08:00
sdong	01475b49ee	Add one more #include<functional>	2019-11-05 11:04:44 -08:00
sdong	de3fdee3ce	Add some include<functional>	2019-10-31 14:24:56 -07:00
sdong	6afcb0d933	[FB Internal] Point to the latest tool chain.	2019-10-31 14:24:29 -07:00
sdong	d6f3ff3629	[fb only] revert unintended change of USE_SSE The previuos change that use gcc-5 set USE_SSE to wrong flag by mistake. Fix it.	2017-07-17 22:22:40 -07:00
sdong	4e0ea33c3c	[FB Only] use gcc-5	2017-07-17 21:55:40 -07:00
sdong	58d8de115f	Upgrade to version 4.10.2	2016-09-07 11:03:54 -07:00
sdong	95ef90988b	Ignore stale logs while restarting DBs Summary: Stale log files can be deleted out of order. This can happen for various reasons. One of the reason is that no data is ever inserted to a column family and we have an optimization to update its log number, but not all the old log files are cleaned up (the case shown in the unit tests added). It can also happen when we simply delete multiple log files out of order. This causes data corruption because we simply increase seqID after processing the next row and we may end up with writing data with smaller seqID than what is already flushed to memtables. In DB recovery, for the oldest files we are replaying, if there it contains no data for any column family, we ignore the sequence IDs in the file. Test Plan: Add two unit tests that fail without the fix. Reviewers: IslamAbdelRahman, igor, yiwu Reviewed By: yiwu Subscribers: hermanlee4, yoshinorim, leveldb, andrewkr, dhruba Differential Revision: https://reviews.facebook.net/D60891	2016-09-07 10:57:32 -07:00
krad	1b3810391e	Update version to 4.10.1	2016-08-26 14:53:34 -07:00
krad	4f1f992b67	Revert "Update version to 4.10.1" This reverts commit `89b20d3cce`.	2016-08-26 14:51:39 -07:00
krad	89b20d3cce	Update version to 4.10.1	2016-08-26 14:46:47 -07:00
sdong	a31b8cb7a7	Mitigate regression bug of options.max_successive_merges hit during DB Recovery Summary: After `1b8a2e8fdd`, DB Pointer is passed to WriteBatchInternal::InsertInto() while DB recovery. This can cause deadlock if options.max_successive_merges hits. In that case DB::Get() will be called. Get() will try to acquire the DB mutex, which is already held by the DB::Open(), causing a deadlock condition. This commit mitigates the problem by not passing the DB pointer unless 2PC is allowed. Test Plan: Add a new test and run it. Reviewers: IslamAbdelRahman, andrewkr, kradhakrishnan, horuff Reviewed By: kradhakrishnan Subscribers: leveldb, andrewkr, dhruba Differential Revision: https://reviews.facebook.net/D62625	2016-08-25 17:35:38 -07:00
John Alexander	2701f5c267	Remove %z Format Specifier and Fix Windows Build of sim_cache.cc (#1224 ) * Replace %zu format specifier with Windows-compatible macro 'ROCKSDB_PRIszt' * Added "port/port.h" include to sim_cache.cc for call to snprintf(). * Applied cleaner fix to windows build, reverting part of `7bedd94`	2016-07-28 16:07:21 -07:00
John Alexander	fdc0675f5c	New Statistics to track Compression/Decompression (#1197 ) * Added new statistics and refactored to allow ioptions to be passed around as required to access environment and statistics pointers (and, as a convenient side effect, info_log pointer). * Prevent incrementing compression counter when compression is turned off in options. * Prevent incrementing compression counter when compression is turned off in options. * Added two more supported compression types to test code in db_test.cc * Prevent incrementing compression counter when compression is turned off in options. * Added new StatsLevel that excludes compression timing. * Fixed casting error in coding.h * Fixed CompressionStatsTest for new StatsLevel. * Removed unused variable that was breaking the Linux build	2016-07-28 16:06:47 -07:00
Islam AbdelRahman	605cd9bfcb	Fix Statistics TickersNameMap miss match with Tickers enum Summary: TickersNameMap is not consistent with Tickers enum. this cause us to report wrong statistics and sometimes to access TickersNameMap outside it's boundary causing crashes (in Fb303 statistics) Test Plan: added new unit test Reviewers: sdong, kradhakrishnan Reviewed By: kradhakrishnan Subscribers: andrewkr, dhruba Differential Revision: https://reviews.facebook.net/D61083	2016-07-26 13:42:44 -07:00
Yi Wu	c7eb50b132	Fix unit test which breaks lite build Summary: Comment out assertion of number of table files from lite build. Test Plan: OPT=-DROCKSDB_LITE make check Reviewers: lightmark Reviewed By: lightmark Subscribers: andrewkr, dhruba, leveldb Differential Revision: https://reviews.facebook.net/D60999	2016-07-21 14:32:49 -07:00
Yi Wu	2462cebfe8	Fix flush not being commit while writing manifest Summary: Fix flush not being commit while writing manifest, which is a recent bug introduced by D60075. The issue: # Options.max_background_flushes > 1 # Background thread A pick up a flush job, flush, then commit to manifest. (Note that mutex is released before writing manifest.) # Background thread B pick up another flush job, flush. When it gets to `MemTableList::InstallMemtableFlushResults`, it notices another thread is commiting, so it quit. # After the first commit, thread A doesn't double check if there are more flush result need to commit, leaving the second flush uncommitted. Test Plan: run the test. Also verify the new test hit deadlock without the fix. Reviewers: sdong, igor, lightmark Reviewed By: lightmark Subscribers: andrewkr, omegaga, dhruba, leveldb Differential Revision: https://reviews.facebook.net/D60969	2016-07-21 13:56:22 -07:00
krad	becc230aa9	Fix version number	2016-07-21 10:59:26 -07:00