Summary:
We found some files containing nothing but negative range tombstones,
and unsurprisingly their metadata specified a negative range, which made
things crash. Time to add a bit of user input validation.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6788
Reviewed By: zhichao-cao
Differential Revision: D21343719
Pulled By: ajkr
fbshipit-source-id: f1c16e4c3e9fa150958c8c866176632a3206fb74
Summary:
The patch extends `FindObsoleteFiles` and `PurgeObsoleteFiles` with
support for blob files. The behavior is analogous to SST files: obsolete
blob files are put on the "candidates for deletion" list, while live (and pending)
files are preserved.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6807
Test Plan: `make check`
Reviewed By: riversand963
Differential Revision: D21406249
Pulled By: ltamasi
fbshipit-source-id: 1948f71c31927564b61e8af394f50ca3964880d9
Summary:
https://github.com/facebook/rocksdb/pull/6807 extends the logic that
identifies and purges obsolete files to blob files handled by RocksDB
itself. In order to prevent that from interfering with the current BlobDB code,
we need to make sure that `BlobDBOptions::blob_dir` is different from
the storage directories used by the base DB. (Note: this is true by default.)
The patch adds a check that explicitly disallows this configuration and
returns `Status::NotSupported` from `BlobDB::Open` in such cases.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6810
Test Plan: Tested using the BlobDB mode of `db_bench`.
Reviewed By: riversand963
Differential Revision: D21412676
Pulled By: ltamasi
fbshipit-source-id: 6630cc7481e48c8bf55d59423b25f14d52ffe681
Summary:
Current DBCompactionTest.ConsistencyFailTest checks DB fails after L0 inconsitency is found. Add slightly more coverage by introducing DBCompactionTest.ConsistencyFailTest2 which checks non-L0 files too.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6800
Test Plan: Run the new test.
Reviewed By: riversand963
Differential Revision: D21384806
fbshipit-source-id: 36db7b657eed42115283fe2f6afa4c3a31a3b510
Summary:
Add methods and constructors for handling enums to the OptionTypeInfo. This change allows enums to be converted/compared without adding a special "type" to the OptionType.
This change addresses a couple of issues:
- It allows new enumerated types to be added to the options without editing the OptionType base class (and related methods)
- It standardizes the procedure for adding enumerated types to the options, reducing potential mistakes
- It moves the enum maps to the location where they are used, allowing them to be static file members rather than global values
- It reduces the number of types and cases that need to be handled in the various OptionType methods
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6423
Reviewed By: siying
Differential Revision: D21408713
Pulled By: zhichao-cao
fbshipit-source-id: fc492af285d011822578b95d186a0fce25d35626
Summary:
This very old test code bug was causing a new valgrind failure
in MultiGetDeadlineExceeded
Also fix hang in MultiGetDeadlineExceeded by unifying with some logic from another test.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6803
Test Plan: run that unit test under valgrind, make check
Reviewed By: siying
Differential Revision: D21388470
Pulled By: pdillinger
fbshipit-source-id: 0ce99d6d5eb8cd3195b17406892c8c5cff5fa5dd
Summary:
With consistency check enabled, VersionBuilder::SaveTo() may return error once
corruption is detected while building versions. We should handle these errors.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6801
Test Plan: make check
Reviewed By: siying
Differential Revision: D21385045
Pulled By: riversand963
fbshipit-source-id: 98f6424e2a4699b62befa21e9fe00e70a771118e
Summary:
Current impl. of db_stress will abort verification and report failure if
GetLiveFiles() causes a dropped column family to be flushed. This is not
desired.
To fix, this PR makes the following change:
In GetLiveFiles, if flush is triggered and returns
Status::IsColumnFamilyDropped(), then set status to Status::OK().
This is OK because dropped column families will be skipped during the rest of
this function, and valid column families will have their live files returned to
caller.
Test plan (dev server):
make check
./db_stress -ops_per_thread=1000 -get_live_files_one_in=100 -clear_column_family_one_in=100
./db_stress -disable_wal=1 -reopen=0 -ops_per_thread=1000 -get_live_files_one_in=100 -clear_column_family_one_in=100
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6805
Reviewed By: ltamasi
Differential Revision: D21390044
Pulled By: riversand963
fbshipit-source-id: de67846b95a4f1b88aa0a30c3d70c43cc68625b9
Summary:
The patch adds logic that returns the set of live blob files from
`Version::AddLiveFiles` and `VersionSet::AddLiveFiles` (in addition to
live table files), and also cleans up the code a bit, for example, by
exposing only the numbers of table files as opposed to the earlier
`FileDescriptor`s that no clients used. Moreover, the patch extends
the `GetLiveFiles` API so that it also exposes blob files in the current version.
Similarly to https://github.com/facebook/rocksdb/pull/6755,
this is a building block for identifying and purging obsolete blob files.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6785
Test Plan: `make check`
Reviewed By: riversand963
Differential Revision: D21336210
Pulled By: ltamasi
fbshipit-source-id: fc1aede8a49eacd03caafbc5f6f9ce43b6270821
Summary:
We are swallowing some file consistency checking failures. This is not expected. We are fixing two cases: DB reopen and manifest dump.
More places are not fixed and need follow-up.
Error from CheckConsistencyForDeletes() is also swallowed, which is not fixed in this PR.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6793
Test Plan: Add a unit test to cover the reopen case.
Reviewed By: riversand963
Differential Revision: D21366525
fbshipit-source-id: eb438a322237814e8d5125f916a3c6de97f39ded
Summary:
Fix issues for reproducing synthetic ZippyDB workloads in the FAST20' paper using db_bench. Details changes as follows.
1, add a separate random mode in MixGraph to produce all_random workload.
2, fix power inverse function for generating prefix_dist workload.
3, make sure key_offset in prefix mode is always unsigned.
note: Need to carefully choose key_dist_a/b to avoid aliasing. Power inverse function range should be close to overall key space.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6795
Reviewed By: akankshamahajan15
Differential Revision: D21371095
Pulled By: zhichao-cao
fbshipit-source-id: 80744381e242392c8c7cf8ac3d68fe67fe876048
Summary:
When expiration is set in a pessimistic transaction, `txn_state_` is already updated to `AWAITING_PREPARE` in the `if (expiration_time_ > 0)` block, there is no need to update the state in `if (can_prepare)` block again.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6778
Test Plan: make check
Reviewed By: lth
Differential Revision: D21335319
Pulled By: cheng-chang
fbshipit-source-id: 251d634cc7d1a0e86e673a59f0bda8584da5a35f
Summary:
The multiple CF hash map is not passed to the multi-thread worker. When using multi-thread replay for multiple CFs, it will cause segment fault. Pass the cf_map to the argument.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6787
Test Plan: pass trace replay test.
Reviewed By: yhchiang
Differential Revision: D21339941
Pulled By: zhichao-cao
fbshipit-source-id: 434482b492287e6722c7cd5a706f057c5ec170ce
Summary:
Add Github Action to perform some basic sanity check for PR, inclding the
following.
1) Buck TARGETS file.
On the one hand, The TARGETS file is used for internal buck, and we do not
manually update it. On the other hand, we need to run the buckifier scripts to
update TARGETS whenever new files are added, etc. With this Github Action, we
make sure that every PR does not forget this step. The GH Action uses
a Makefile target called check-buck-targets. Users can manually run `make
check-buck-targets` on local machine.
2) Code format
We use clang-format-diff.py to format our code. The GH Action in this PR makes
sure this step is not skipped. The checking script build_tools/format-diff.sh assumes that `clang-format-diff.py` is executable.
On host running GH Action, it is difficult to download `clang-format-diff.py` and make it
executable. Therefore, we modified build_tools/format-diff.sh to handle the case in which there is a non-executable clang-format-diff.py file in the top-level rocksdb repo directory.
Test Plan (Github and devserver):
Watch for Github Action result in the `Checks` tab.
On dev server
```
make check-format
make check-buck-targets
make check
```
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6761
Test Plan: Watch for Github Action result in the `Checks` tab.
Reviewed By: pdillinger
Differential Revision: D21260209
Pulled By: riversand963
fbshipit-source-id: c646e2f37c6faf9f0614b68aa0efc818cff96787
Summary:
The current way of implementing CompressionOptions.parallel_threads introduces a format change. We plan to change CompressionOptions's serailization format to a new JSON-like format, which would be another format change. We would like to consolidate the two format changes into one, rather than making some users to change twice. Hold CompressionOptions.parallel_threads from being supported by option string for now. Will add it back after the general CompressionOptions's format change.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6782
Test Plan: Run all existing tests.
Reviewed By: zhichao-cao
Differential Revision: D21338614
fbshipit-source-id: bca2dac3cb37d4e6e64b52cbbe8ea749cd848685
Summary:
In current commit protocol of pessimistic transaction, if the transaction is not prepared before commit, the commit protocol implicitly assumes that the user wants to commit without prepare.
This PR adds TransactionOptions::skip_prepare, the default value is `true` because if set to `false`, all existing users who commit without prepare need to update their code to set skip_prepare to true. Although this does not force the user to explicitly express their intention of skip_prepare, it at least lets the user be aware of the assumption of being able to commit without prepare.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6775
Test Plan: added a new unit test TransactionTest::CommitWithoutPrepare
Reviewed By: lth
Differential Revision: D21313270
Pulled By: cheng-chang
fbshipit-source-id: 3d95b7c9b2d6cdddc09bdd66c561bc4fae8c3251
Summary:
There is no systematic mechanism to prevent BlockBasedTableBuilder's status to be set from non-OK to OK. Adding a mechanism to force this will help us prevent failures in the future.
The solution is to only make it possible to set the status code if the status code to set is not OK.
Since the status code passed to CompressAndVerifyBlock() is changed, a mini refactoring is done too so that the output arguments are changed from reference to pointers, based on Google C++ Style.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6776
Test Plan: Run all existing test.
Reviewed By: pdillinger
Differential Revision: D21314382
fbshipit-source-id: 27000c10f1e4c121661e026548d6882066409375
Summary:
The feature of CompressionOptions::parallel_threads is still not yet mature. Mention it to be experimental in the comments for now.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6781
Reviewed By: pdillinger
Differential Revision: D21330678
fbshipit-source-id: d7dd7d099fb002a5c6a5d8da689ce5ee08a9eb13
Summary:
Calculate ```IOOptions::timeout``` using ```ReadOptions::deadline``` and pass it to ```FileSystem::Read/FileSystem::MultiRead```. This allows us to impose a tighter bound on the time taken by Get/MultiGet on FileSystem/Envs that support IO timeouts. Even on those that don't support, check in ```RandomAccessFileReader::Read``` and ```MultiRead``` and return ```Status::TimedOut()``` if the deadline is exceeded.
For now, TableReader creation, which might do file opens and reads, are not covered. It will be implemented in another PR.
Tests:
Update existing unit tests to verify the correct timeout value is being passed
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6751
Reviewed By: riversand963
Differential Revision: D21285631
Pulled By: anand1976
fbshipit-source-id: d89af843e5a91ece866e87aa29438b52a65a8567
Summary:
An assertion that a char == a CompressionType (unsigned char)
originally cast from a char can fail if the original value is negative,
due to numeric promotion. The assertion should pass even if the value
is invalid CompressionType, because the callee
UncompressBlockContentsForCompressionType checks for that and reports
status appropriately.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6780
Test Plan:
Temporarily change kZSTD = 0x88 and see tests fail. Make this
change (in addition), and tests pass.
Reviewed By: siying
Differential Revision: D21328498
Pulled By: pdillinger
fbshipit-source-id: 61caf8d815581ce49261ecb7ab0f396e9ac4bb92
Summary:
The patch adds logic to keep track of obsolete blob files. A blob file becomes
obsolete when the last `shared_ptr` that points to the corresponding
`SharedBlobFileMetaData` object goes away, which, in turn, happens when the
last `Version` that contains the blob file is destroyed. No longer needed blob
files are added to the obsolete list in `VersionSet` using a custom deleter to
avoid unnecessary coupling between `SharedBlobFileMetaData` and `VersionSet`.
Obsolete blob files are returned by `VersionSet::GetObsoleteFiles` and stored
in `JobContext`.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6755
Test Plan: `make check`
Reviewed By: riversand963
Differential Revision: D21233155
Pulled By: ltamasi
fbshipit-source-id: 47757e06fdc0127f27ed57f51abd27893d9a7b7a
Summary:
This commit adds an `compression_parallel_threads` option in
db_stress. It also fixes the naming of parallel compression
option in db_bench to keep it aligned with others.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6722
Reviewed By: pdillinger
Differential Revision: D21091385
fbshipit-source-id: c9ba8c4e5cc327ff9e6094a6dc6a15fcff70f100
Summary:
The issue is reported in https://github.com/facebook/rocksdb/issues/6753 . size_t is unsigned and if sorted_file.size() is 0, the end condition of i will be extremely large, cause segment fault in sorted_files[i] and sorted_files[i+1]. Added condition to fix it.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6762
Test Plan: make asan_check
Reviewed By: pdillinger
Differential Revision: D21323063
Pulled By: zhichao-cao
fbshipit-source-id: 56ce59201949ed319448228553202b8642c2cc3a
Summary:
Fix the following cases that can cause false alarms in db_stress when read fault injection is
enabled -
1. Turn off corruption/truncation when direct IO is enabled. Since the actual IO size is larger than block size due to alignment requirements, the corruption may not result in a detectable error.
2. Handle the case when the randomly generated string to overwrite the original block is identical to the original.
Tests:
Run db_stress w/ and wo/ direct IO and fault injection turned on
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6777
Reviewed By: zhichao-cao
Differential Revision: D21316734
Pulled By: anand1976
fbshipit-source-id: bf0e6468043063ca81ff877d4bf71d3f296c77aa
Summary:
Nasty bug in which more/different changes would be applied than
those shown to user
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6772
Test Plan: manual
Reviewed By: siying
Differential Revision: D21304604
Pulled By: pdillinger
fbshipit-source-id: 7e20740e513c9c300d1522511290a025b35abedc
Summary:
The dynamic_cast in the filter benchmark causes release mode to fail due to
no-rtti. Replace with static_cast_with_check.
Signed-off-by: Derrick Pallas <derrick@pallas.us>
Addition by peterd: Remove unnecessary 2nd template arg on all static_cast_with_check
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6732
Reviewed By: ltamasi
Differential Revision: D21304260
Pulled By: pdillinger
fbshipit-source-id: 6e8eb437c4ca5a16dbbfa4053d67c4ad55f1608c
Summary:
Added functions for parsing, serializing, and comparing elements to OptionTypeInfo. These functions allow all of the special cases that could not be handled directly in the map of OptionTypeInfo to be moved into the map. Using these functions, every type can be handled via the map rather than special cased.
By adding these functions, the code for handling options can become more standardized (fewer special cases) and (eventually) handled completely by common classes.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6422
Test Plan: pass make check
Reviewed By: siying
Differential Revision: D21269005
Pulled By: zhichao-cao
fbshipit-source-id: 9ba71c721a38ebf9ee88259d60bd81b3282b9077
Summary:
GetSupportedCompressions needs to be defined under LITE.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6758
Test Plan: build under LITE
Reviewed By: zhichao-cao
Differential Revision: D21247937
Pulled By: cheng-chang
fbshipit-source-id: 880e59d3e107cdd736d16427a68c5641d1318fb4
Summary:
If an error happens during BlobDBImpl::Open after the base DB has been
opened, we need to destroy the `ColumnFamilyHandle`s returned by `DB::Open`
to prevent an assertion in `ColumnFamilySet`'s destructor from being hit.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6763
Test Plan: Ran `make check` and tested using the BlobDB mode of `db_bench`.
Reviewed By: riversand963
Differential Revision: D21262643
Pulled By: ltamasi
fbshipit-source-id: 60ebc7ab19be66cf37fbe5f6d8957d58470f3d3b
Summary:
Fixed minor typo in comment for FullMergeV2().
Last operand up to snapshot should be +4 instead of +3.
Signed-off-by: Albert Hse-Lin Chen <hselin@kalista.io>
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6759
Reviewed By: cheng-chang
Differential Revision: D21260295
Pulled By: zhichao-cao
fbshipit-source-id: cc942306f246c8606538feb30bfdf6df9fb6c54e
Summary:
Since read threads do not coordinate on loading data into block
cache, two threads between Lookup and Insert can end up loading and
inserting the same data. This is particularly concerning with
cache_index_and_filter_blocks since those are hot and more likely to
be race targets if ejected from (or not pre-populated in) the cache.
Particularly with moves toward disaggregated / network storage, the cost
of redundant retrieval might be high, and we should at least have some
hard statistics from which we can estimate impact.
Example with full filter thrashing "cliff":
$ ./db_bench --benchmarks=fillrandom --num=15000000 --cache_index_and_filter_blocks -bloom_bits=10
...
$ ./db_bench --db=/tmp/rocksdbtest-172704/dbbench --use_existing_db --benchmarks=readrandom,stats --num=200000 --cache_index_and_filter_blocks --cache_size=$((130 * 1024 * 1024)) --bloom_bits=10 --threads=16 -statistics 2>&1 | egrep '^rocksdb.block.cache.(.*add|.*redundant)' | grep -v compress | sort
rocksdb.block.cache.add COUNT : 14181
rocksdb.block.cache.add.failures COUNT : 0
rocksdb.block.cache.add.redundant COUNT : 476
rocksdb.block.cache.data.add COUNT : 12749
rocksdb.block.cache.data.add.redundant COUNT : 18
rocksdb.block.cache.filter.add COUNT : 1003
rocksdb.block.cache.filter.add.redundant COUNT : 217
rocksdb.block.cache.index.add COUNT : 429
rocksdb.block.cache.index.add.redundant COUNT : 241
$ ./db_bench --db=/tmp/rocksdbtest-172704/dbbench --use_existing_db --benchmarks=readrandom,stats --num=200000 --cache_index_and_filter_blocks --cache_size=$((120 * 1024 * 1024)) --bloom_bits=10 --threads=16 -statistics 2>&1 | egrep '^rocksdb.block.cache.(.*add|.*redundant)' | grep -v compress | sort
rocksdb.block.cache.add COUNT : 1182223
rocksdb.block.cache.add.failures COUNT : 0
rocksdb.block.cache.add.redundant COUNT : 302728
rocksdb.block.cache.data.add COUNT : 31425
rocksdb.block.cache.data.add.redundant COUNT : 12
rocksdb.block.cache.filter.add COUNT : 795455
rocksdb.block.cache.filter.add.redundant COUNT : 130238
rocksdb.block.cache.index.add COUNT : 355343
rocksdb.block.cache.index.add.redundant COUNT : 172478
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6681
Test Plan: Some manual testing (above) and unit test covering key metrics is included
Reviewed By: ltamasi
Differential Revision: D21134113
Pulled By: pdillinger
fbshipit-source-id: c11497b5f00f4ffdfe919823904e52d0a1a91d87
Summary:
Summary : 1. Add two arguments --compression_level_from and --compression_level_to to check
the compression size with different compression level in the given range. Users must
specify one compression type else it will error out. Both from and to levels must
also be specified together.
2. Display the time taken to compress each file with different compressions by default.
Test Plan : make -j64 check
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6634
Test Plan: make -j64 check
Reviewed By: anand1976
Differential Revision: D20810282
Pulled By: akankshamahajan15
fbshipit-source-id: ac9098d3c079a1fad098f6678dbedb4d888a791b
Summary:
Some common build variables like USE_CLANG and
COMPILE_WITH_UBSAN did not work if specified as make variables, as in
`make USE_CLANG=1 check` etc. rather than (in theory less hygienic)
`USE_CLANG=1 make check`. This patches Makefile to export some commonly
used ones to build_detect_platform so that they work. (I'm skeptical of
a broad `export` in Makefile because it's hard to predict how random
make variables might affect various invoked tools.)
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6740
Test Plan: manual / CI
Reviewed By: siying
Differential Revision: D21229011
Pulled By: pdillinger
fbshipit-source-id: b00c69b23eb2a13105bc8d860ce2d1e61ac5a355
Summary:
Some recent PRs added new source files or modified TARGETS file manually.
During next internal release, executing the following command will revert the
manual changes.
Update buckifier so that the following command
```
python buckfier/buckify_rocksdb.py
```
does not change TARGETS file.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6726
Test Plan:
```
python buckifier/buckify_rocksdb.py
```
Reviewed By: siying
Differential Revision: D21098930
Pulled By: riversand963
fbshipit-source-id: e884f507fefef88163363c9097a460c98f1ed850
Summary:
In crash test, the db directory might be set to /dev/shm or /tmp, in certain environments such as internal testing infrastructure, neither of these directories support direct IO, so direct IO is never enabled in crash test.
This PR sets up SyncPoints in direct IO related code paths to disable O_DIRECT flag in calls to `open`, so the direct IO code paths will be executed, all direct IO related assertions will be checked, but no real direct IO request will be issued to the file system.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6727
Test Plan:
export CRASH_TEST_EXT_ARGS="--use_direct_reads=1 --mmap_read=0"
make -j24 crash_test
Reviewed By: zhichao-cao
Differential Revision: D21139250
Pulled By: cheng-chang
fbshipit-source-id: db9adfe78d91aa4759835b1af91c5db7b27b62ee
Summary:
In https://github.com/facebook/rocksdb/pull/6455, we modified the interface of `RandomAccessFileReader::Read` to be able to get rid of memcpy in direct IO mode.
This PR applies the new interface to `BlockFetcher` when reading blocks from SST files in direct IO mode.
Without this PR, in direct IO mode, when fetching and uncompressing compressed blocks, `BlockFetcher` will first copy the raw compressed block into `BlockFetcher::compressed_buf_` or `BlockFetcher::stack_buf_` inside `RandomAccessFileReader::Read` depending on the block size. then during uncompressing, it will copy the uncompressed block into `BlockFetcher::heap_buf_`.
In this PR, we get rid of the first memcpy and directly uncompress the block from `direct_io_buf_` to `heap_buf_`.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6689
Test Plan: A new unit test `block_fetcher_test` is added.
Reviewed By: anand1976
Differential Revision: D21006729
Pulled By: cheng-chang
fbshipit-source-id: 2370b92c24075692423b81277415feb2aed5d980
Summary:
In release mode, asserts are not compiled, so `r` is not used, causing compiler warnings.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6750
Test Plan: make check under release mode
Reviewed By: anand1976
Differential Revision: D21220365
Pulled By: cheng-chang
fbshipit-source-id: fd4afa9843d54af68c4da8660ec61549803e1167
Summary:
After a successful recovery, the CURRENT file should be updated to point to the valid MANIFEST.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6746
Test Plan: make check
Reviewed By: anand1976
Differential Revision: D21189876
Pulled By: riversand963
fbshipit-source-id: 7537b49988c5c425ebe9505a5cc260de351ad79b
Summary:
The patch makes a couple of small cleanups to `SharedBlobFileMetaData` and `BlobFileMetaData`:
* It makes the constructors private and introduces factory methods to ensure these objects are always owned by `shared_ptr`s. Note that `SharedBlobFileMetaData` has an additional factory that takes a deleter object; we can utilize this to e.g. notify `VersionSet` when a blob file becomes obsolete (which is exactly when `SharedBlobFileMetaData` is destroyed).
* It disables move operations explicitly instead of relying on them being suppressed because of a user-declared destructor.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6749
Test Plan: `make check`
Reviewed By: riversand963
Differential Revision: D21206947
Pulled By: ltamasi
fbshipit-source-id: 9094c14cc335b3e226f883e5a0df4f87a5cdeb95
Summary:
The methods in convenience.h are used to compare/convert objects to/from strings. There is a mishmash of parameters in use here with more needed in the future. This PR replaces those parameters with a single structure.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6389
Reviewed By: siying
Differential Revision: D21163707
Pulled By: zhichao-cao
fbshipit-source-id: f807b4cc7e2b0af3871536b69546b2604dfa81bd
Summary:
Initial implementation of ReadOptions.deadline for MultiGet. If the request takes longer than the deadline, the keys not yet found will be returned with Status::TimedOut(). This
implementation enforces the deadline in DBImpl, which is fairly high
level. Its best effort and may not check the deadline after every key
lookup, but may do so after a batch of keys.
In subsequent stages, we will extend this to passing a timeout down to the FileSystem.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6710
Test Plan: Add new unit tests
Reviewed By: riversand963
Differential Revision: D21149158
Pulled By: anand1976
fbshipit-source-id: 9f44eecffeb40873f5034ed59a66d21f9f88879e
Summary:
When index block is empty or an error happens while reading it,
`Invalidate()` is called rather than `Initialize()`. So `Seek()` must
not refer to member variables that are only initialized in
`Initialize()` until it is sure `Initialize()` has been called.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6736
Reviewed By: siying
Differential Revision: D21139641
Pulled By: ajkr
fbshipit-source-id: 71c58cc1adbd795dc3729dd5023bf7df1515ff32
Summary:
1. Add changes so that max_background_flushes can be set dynamically.
2. Add a testcase DBOptionsTest.SetBackgroundFlushThreads which set the
max_background_flushes dynamically using SetDBOptions.
TestPlan: 1. make -j64 check
2. Using new testcase DBOptionsTest.SetBackgroundFlushThreads
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6701
Reviewed By: ajkr
Differential Revision: D21028010
Pulled By: akankshamahajan15
fbshipit-source-id: 5f949e4a8fd3c32537b637947b7ee09a69cfc7c1
Summary:
Based on https://github.com/facebook/rocksdb/issues/6648 (CLA Signed), but heavily modified / extended:
* Implicit capture of this via [=] deprecated in C++20, and [=,this] not standard before C++20 -> now using explicit capture lists
* Implicit copy operator deprecated in gcc 9 -> add explicit '= default' definition
* std::random_shuffle deprecated in C++17 and removed in C++20 -> migrated to a replacement in RocksDB random.h API
* Add the ability to build with different std version though -DCMAKE_CXX_STANDARD=11/14/17/20 on the cmake command line
* Minimal rebuild flag of MSVC is deprecated and is forbidden with /std:c++latest (C++20)
* Added MSVC 2019 C++11 & MSVC 2019 C++20 in AppVeyor
* Added GCC 9 C++11 & GCC9 C++20 in Travis
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6697
Test Plan: make check and CI
Reviewed By: cheng-chang
Differential Revision: D21020318
Pulled By: pdillinger
fbshipit-source-id: 12311be5dbd8675a0e2c817f7ec50fa11c18ab91
Summary:
Recently index_type kBinarySearchWithFirstKey is improved so that the API guarantee is exactly the same as other types and it is ready for wide production. We should cover it in crash tst.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6721
Test Plan: Run crash_test
Reviewed By: anand1976
Differential Revision: D21099781
fbshipit-source-id: fda91eba831d9eacbb140c703e9768bb1701f935
Summary:
IsDirectory() is a common API to check whether a path is a regular file or
directory.
POSIX: call stat() and use S_ISDIR(st_mode)
Windows: PathIsDirectoryA() and PathIsDirectoryW()
HDFS: FileSystem.IsDirectory()
Java: File.IsDirectory()
...
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6711
Test Plan: make check
Reviewed By: anand1976
Differential Revision: D21053520
Pulled By: riversand963
fbshipit-source-id: 680aadfd8ce982b63689190cf31b3145d5a89e27
Summary:
RocksDB behavior is different while max_open_files is small or large. Add the coverage to small max_open_files.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6719
Test Plan: Run crash_test
Reviewed By: pdillinger
Differential Revision: D21081021
fbshipit-source-id: e3e211761a9bd25d93d19a61c1f7b62d48cf5e3c
Summary:
This PR exposes the `Iterator::Refresh` method to the Java API by adding it on the `RocksIteratorInterface` interface. There are three concrete implementations: `RocksIterator`, `SstFileReaderIterator`, and `WBWIRocksIterator`. For the first two cases, the JNI side simply delegates to the underlying `Iterator::Refresh` method; in the last case, as it doesn't share an ancestor, and per the discussion in https://github.com/facebook/rocksdb/issues/3465, a `Status::NotSupported` exception is thrown.
As the last PR had no activity in a while, I'm opening a new one - I'm completely fine with merging the previous PR if it gets completed before this is reviewed.
Let me know if there's anything missing or anything else I can do 👍
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6573
Reviewed By: cheng-chang
Differential Revision: D20604666
Pulled By: pdillinger
fbshipit-source-id: 4de17df1180c3b87b76cfdd77b674b81fc0563f7
Summary:
Adding solid support for multiple architectures was initially triggered by RocksJava users. As such I would like to keep the CI for RocksJava on all architectures, to ensure we don't break backwards compatibility.
pdillinger okay let's see how long it takes to complete Travis-CI with this one...
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6583
Reviewed By: cheng-chang
Differential Revision: D21036718
Pulled By: pdillinger
fbshipit-source-id: 97afe0db2e4c575cc0284fdc1d4cc45d5deb2272
Summary:
Updates the version of bzip2 used for RocksJava static builds.
Please, can we also get this cherry-picked to:
1. 6.7.fb
2. 6.8.fb
3. 6.9.fb
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6714
Reviewed By: cheng-chang
Differential Revision: D21067233
Pulled By: pdillinger
fbshipit-source-id: 8164b7eb99c5ca7b2021ab8c371ba9ded4cb4f7e
Summary:
Invariant checking should use internal key comparator rather than
`sstableKeyCompare()`. The latter was intended for checking whether a
compaction input file's neighboring files need to be included in the
same compaction. Using it for invariant checking was leading to false
positives for files with overlapping endpoints.
Fixes https://github.com/facebook/rocksdb/issues/6647.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6663
Test Plan: regression test
Reviewed By: zhichao-cao
Differential Revision: D20910466
Pulled By: ajkr
fbshipit-source-id: f0b70dad7c4096fce635cab7a36f16e14f74ae3f
Summary:
Options.avoid_flush_during_recovery is uncovered in crash_test. Add the coverage with a chance of 1/8, as it is a less frequently used options.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6712
Test Plan: Run crash_test and see the option can be used or not used by chance.
Reviewed By: ltamasi
Differential Revision: D21056566
fbshipit-source-id: c3b1521517cfc204786e6ef8c6acd7fffda64793
Summary:
Add env_fault_injection argument to db_stress. When enabled,
FaultInjectionTestEnv will be used instead. Currently this
option does not support running with other env setting.
This will allow
us to later manually produce error when running db_crashtest.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6687
Test Plan:
make db_stress -j32
./db_stress --env_fault_injection
./db_stress --env_fault_injection --hdfs // expect error message
Reviewed By: ajkr
Differential Revision: D21014683
Pulled By: yhchiang
fbshipit-source-id: 0724aeac37efd57adb72a37defe6dbd3bfa8106a
Summary:
Compilation fails on systems that do not support O_CLOEXEC. Fix it.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6695
Test Plan: compile without O_CLOEXEC support
Reviewed By: anand1976
Differential Revision: D21011850
Pulled By: cheng-chang
fbshipit-source-id: f1bf1cce2aa65c7d10b5a9613e941db30e928347
Summary:
Context: Index type `kBinarySearchWithFirstKey` added the ability for sst file iterator to sometimes report a key from index without reading the corresponding data block. This is useful when sst blocks are cut at some meaningful boundaries (e.g. one block per key prefix), and many seeks land between blocks (e.g. for each prefix, the ranges of keys in different sst files are nearly disjoint, so a typical seek needs to read a data block from only one file even if all files have the prefix). But this added a new error condition, which rocksdb code was really not equipped to deal with: `InternalIterator::value()` may fail with an IO error or Status::Incomplete, but it's just a method returning a Slice, with no way to report error instead. Before this PR, this type of error wasn't handled at all (an empty slice was returned), and kBinarySearchWithFirstKey implementation was considered a prototype.
Now that we (LogDevice) have experimented with kBinarySearchWithFirstKey for a while and confirmed that it's really useful, this PR is adding the missing error handling.
It's a pretty inconvenient situation implementation-wise. The error needs to be reported from InternalIterator when trying to access value. But there are ~700 call sites of `InternalIterator::value()`, most of which either can't hit the error condition (because the iterator is reading from memtable or from index or something) or wouldn't benefit from the deferred loading of the value (e.g. compaction iterator that reads all values anyway). Adding error handling to all these call sites would needlessly bloat the code. So instead I made the deferred value loading optional: only the call sites that may use deferred loading have to call the new method `PrepareValue()` before calling `value()`. The feature is enabled with a new bool argument `allow_unprepared_value` to a bunch of methods that create iterators (it wouldn't make sense to put it in ReadOptions because it's completely internal to iterators, with virtually no user-visible effect). Lmk if you have better ideas.
Note that the deferred value loading only happens for *internal* iterators. The user-visible iterator (DBIter) always prepares the value before returning from Seek/Next/etc. We could go further and add an API to defer that value loading too, but that's most likely not useful for LogDevice, so it doesn't seem worth the complexity for now.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6621
Test Plan: make -j5 check . Will also deploy to some logdevice test clusters and look at stats.
Reviewed By: siying
Differential Revision: D20786930
Pulled By: al13n321
fbshipit-source-id: 6da77d918bad3780522e918f17f4d5513d3e99ee
Summary:
This was causing db_crashtest.py to wrongly assume an error by parsing the output. Hopefully this will stabilize the crash tests.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6705
Test Plan: make blackbox_crash_test
Reviewed By: ltamasi
Differential Revision: D21043335
Pulled By: anand1976
fbshipit-source-id: 5cddd112b124d4e2ebd11724a17d4ef0f50c1cf8
Summary:
Improve it in two ways:
1. tools/check_format_compatible.sh is not friendly to run outside FB environment. remove the hard-coded http proxy setting. Instead, move it to Legocastle configuration
2. Always disable warning as error, so that older build is more likely to pass.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6702
Test Plan: Run the test and make sure at least it doesn't break.
Reviewed By: riversand963
Differential Revision: D21033329
fbshipit-source-id: 88b4ec1ec49547b772790050a165466bdc4a62a0
Summary:
1. Fix a memory leak in FaultInjectionTestFS in the stack trace related
code
2. Check status of all MultiGet keys before deciding whether an error
was swallowed, instead of assuming an ok status for any key means an
undetected error
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6700
Test Plan: Run db_stress with asan and fault injection
Reviewed By: cheng-chang
Differential Revision: D21021498
Pulled By: anand1976
fbshipit-source-id: 489191efd1ab0fa834923a1e1d57253a7a315465
Summary:
The error message is causing problems in the crash tests due to the
error parsing logic in db_crashtest.py.
This is a follow up PR for https://github.com/facebook/rocksdb/pull/6694.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6696
Test Plan: make check
Reviewed By: zhichao-cao
Differential Revision: D21021875
Pulled By: cheng-chang
fbshipit-source-id: 11e3f536df16941a89949ebcd2147cd8dfa3fbe0
Summary:
Log it in the info log to help in troubleshooting. It is logged as follows -
```
2020/04/10-10:51:39.886662 7ffff7fef340 Options.table_properties_collectors: CompactOnDeletionCollector (Sliding window size = 100 Deletion trigger = 90);
```
Tests:
make check
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6686
Reviewed By: ltamasi
Differential Revision: D21002442
Pulled By: anand1976
fbshipit-source-id: 7adf0dbae7f1febcb00ce61fea5097118ede5c6a
Summary:
Add NewFileChecksumGenCrc32cFactory to file checksum public interface such that applications can use the build in crc32 checksum factory.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6688
Test Plan: pass make asan_check
Reviewed By: riversand963
Differential Revision: D21006859
Pulled By: zhichao-cao
fbshipit-source-id: ea8a45196a8b77c310728ab05f6cc0f49f3baef0
Summary:
BlockBasedTableBuilder::ParallelCompressionRep::first_block can be read in
Flush() and written in BGWorkWriteRawBlock() concurrently. This commit fixes
the issue by reading first_block out before pushing the block to compression
and write.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6640
Test Plan: Run all tests concurrently with TSAN.
Reviewed By: cheng-chang
Differential Revision: D20851370
fbshipit-source-id: 6f039222e8319d31e15f1b45e05c106527253f72
Summary:
The error message is causing problems in the crash tests due to the
error parsing logic in db_crashtest.py.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6694
Reviewed By: siying
Differential Revision: D20998531
Pulled By: anand1976
fbshipit-source-id: 89cb54a5f5bb664ae6d239c37559f10e14c5ea07
Summary:
In index blocks since `format_version=3`, user keys are written
rather than internal keys. When reading such blocks, the comparator is
obtained via `InternalKeyComparator::user_comparator()`. That function
must not return an unwrapped result as the wrapper class provides
accounting logic to populate `PerfContext::user_key_comparison_count`.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6650
Test Plan:
ran db_bench and verified
`PerfContext::user_key_comparison_count` became larger.
Reviewed By: cheng-chang
Differential Revision: D20866325
Pulled By: ajkr
fbshipit-source-id: ad755d46bda31157dacc5b66e532279f19ad538c
Summary:
This PR implements a fault injection mechanism for injecting errors in reads in db_stress. The FaultInjectionTestFS is used for this purpose. A thread local structure is used to track the errors, so that each db_stress thread can independently enable/disable error injection and verify observed errors against expected errors. This is initially enabled only for Get and MultiGet, but can be extended to iterator as well once its proven stable.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6538
Test Plan:
crash_test
make check
Reviewed By: riversand963
Differential Revision: D20714347
Pulled By: anand1976
fbshipit-source-id: d7598321d4a2d72bda0ced57411a337a91d87dc7
Summary:
Towards making compaction logic compatible with user timestamp.
When computing boundaries and overlapping ranges for inputs of compaction, We need to compare SSTs by user key without timestamp.
Test plan (devserver):
```
make check
```
Several individual tests:
```
./version_set_test --gtest_filter=VersionStorageInfoTimestampTest.GetOverlappingInputs
./db_with_timestamp_compaction_test
./db_with_timestamp_basic_test
```
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6645
Reviewed By: ltamasi
Differential Revision: D20960012
Pulled By: riversand963
fbshipit-source-id: ad377fa9eb481bf7a8a3e1824aaade48cdc653a4
Summary:
Summary : Set manual_compaction false in case of DeleteTriggeredCompaction object so that kFilesMarkedForComapaction can be reported.
Added a DeletionTriggeredUniversalCompactionMarking test case for Deletion Triggered compaction in case of Universal Compaction.
Test Plan : make check -j64
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6680
Test Plan: make check -j64
Reviewed By: anand1976
Differential Revision: D20945946
Pulled By: akankshamahajan15
fbshipit-source-id: af84e417bd7127652aaae9143c560d1ab3815d25
Summary:
(Based on Yanqin's idea) Add a new field in readoptions as lower timestamp bound for iterator. When the parameter is not supplied (nullptr), the iterator returns the latest visible version of a record. When it is supplied, the existing timestamp field is the upper bound. Together the two serves as a bounded time window. The iterator returns all versions of a record falling in the window.
SeekRandom perf test (10 minutes) on the same development machine ram drive with the same DB data shows no regression (within marge of error). The test is adapted from https://github.com/facebook/rocksdb/wiki/RocksDB-In-Memory-Workload-Performance-Benchmarks.
base line (commit e860f8840):
seekrandom : 7.836 micros/op 4082449 ops/sec; (0 of 73481999 found)
This PR:
seekrandom : 7.764 micros/op 4120935 ops/sec; (0 of 71303999 found)
db_bench --db=r:\rocksdb.github --num_levels=6 --key_size=20 --prefix_size=20 --keys_per_prefix=0 --value_size=100 --cache_size=2147483648 --cache_numshardbits=6 --compression_type=none --compression_ratio=1 --min_level_to_compress=-1 --disable_seek_compaction=1 --hard_rate_limit=2 --write_buffer_size=134217728 --max_write_buffer_number=2 --level0_file_num_compaction_trigger=8 --target_file_size_base=134217728 --max_bytes_for_level_base=1073741824 --disable_wal=0 --wal_dir=r:\rocksdb.github\WAL_LOG --sync=0 --verify_checksum=1 --statistics=0 --stats_per_interval=0 --stats_interval=1048576 --histogram=0 --use_plain_table=1 --open_files=-1 --memtablerep=prefix_hash --bloom_bits=10 --bloom_locality=1 --duration=600 --benchmarks=seekrandom --use_existing_db=1 --num=25000000 --threads=32 --allow_concurrent_memtable_write=0
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6544
Reviewed By: ltamasi
Differential Revision: D20844069
Pulled By: riversand963
fbshipit-source-id: d97f2bf38a323c8c6a68db213b2d3c694b1c1f74
Summary:
New memory technologies are being developed by various hardware vendors (Intel DCPMM is one such technology currently available). These new memory types require different libraries for allocation and management (such as PMDK and memkind). The high capacities available make it possible to provision large caches (up to several TBs in size), beyond what is achievable with DRAM.
The new allocator provided in this PR uses the memkind library to allocate memory on different media.
**Performance**
We tested the new allocator using db_bench.
- For each test, we vary the size of the block cache (relative to the size of the uncompressed data in the database).
- The database is filled sequentially. Throughput is then measured with a readrandom benchmark.
- We use a uniform distribution as a worst-case scenario.
The plot shows throughput (ops/s) relative to a configuration with no block cache and default allocator.
For all tests, p99 latency is below 500 us.
**Changes**
- Add MemkindKmemAllocator
- Add --use_cache_memkind_kmem_allocator db_bench option (to create an LRU block cache with the new allocator)
- Add detection of memkind library with KMEM DAX support
- Add test for MemkindKmemAllocator
**Minimum Requirements**
- kernel 5.3.12
- ndctl v67 - https://github.com/pmem/ndctl
- memkind v1.10.0 - https://github.com/memkind/memkind
**Memory Configuration**
The allocator uses the MEMKIND_DAX_KMEM memory kind. Follow the instructions on[ memkind’s GitHub page](https://github.com/memkind/memkind) to set up NVDIMM memory accordingly.
Note on memory allocation with NVDIMM memory exposed as system memory.
- The MemkindKmemAllocator will only allocate from NVDIMM memory (using memkind_malloc with MEMKIND_DAX_KMEM kind).
- The default allocator is not restricted to RAM by default. Based on NUMA node latency, the kernel should allocate from local RAM preferentially, but it’s a kernel decision. numactl --preferred/--membind can be used to allocate preferentially/exclusively from the local RAM node.
**Usage**
When creating an LRU cache, pass a MemkindKmemAllocator object as argument.
For example (replace capacity with the desired value in bytes):
```
#include "rocksdb/cache.h"
#include "memory/memkind_kmem_allocator.h"
NewLRUCache(
capacity /*size_t*/,
6 /*cache_numshardbits*/,
false /*strict_capacity_limit*/,
false /*cache_high_pri_pool_ratio*/,
std::make_shared<MemkindKmemAllocator>());
```
Refer to [RocksDB’s block cache documentation](https://github.com/facebook/rocksdb/wiki/Block-Cache) to assign the LRU cache as block cache for a database.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6214
Reviewed By: cheng-chang
Differential Revision: D19292435
fbshipit-source-id: 7202f47b769e7722b539c86c2ffd669f64d7b4e1
Summary:
https://github.com/facebook/rocksdb/pull/6668 added some new test code but it has a risk of memory corruption. Fix it
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6676
Test Plan: Run the test under ASAN and see it passes.
Reviewed By: ajkr
Differential Revision: D20937108
fbshipit-source-id: 22cc96bb02030df0a37a02e67a2cc37ca31ba22d
Summary:
Although these optimizations are not user facing, still feel it's valuable to call out in HISTORY.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6679
Test Plan: no need
Reviewed By: zhichao-cao
Differential Revision: D20945916
Pulled By: cheng-chang
fbshipit-source-id: f3e790c07f3bcc4a8a74246c4fa232800ddd4438
Summary:
On reading an ingested SST file, `DataBlockIter` will replace seqno encoded in a key with global seqno. However, if the original seqno was part of the prefix used for the next key, the global seqno is by mistake used as part of the prefix to construct the next key, causing wrong result being returned. Although at this point it is only software error while data in the file is not corrupted, the issue can further cause compaction output out of order and corrupted result when the ingested SST participated in compaction. Fixing the issue by save the actual seqno and restore it before the key being used as prefix to construct next key.
The unit test is by Little-Wallace from https://github.com/facebook/rocksdb/issues/6666. Fixing https://github.com/facebook/rocksdb/issues/6666.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6669
Test Plan:
New unit test
Signed-off-by: Yi Wu <yiwu@pingcap.com>
Reviewed By: cheng-chang
Differential Revision: D20931808
Pulled By: ajkr
fbshipit-source-id: f01959c35d6a493954dca981663766c7a5a9e8ab
Summary:
When aligned_buf is provided, the result slice's starting address should take offset advance into account.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6672
Test Plan: make check
Reviewed By: anand1976
Differential Revision: D20934198
Pulled By: cheng-chang
fbshipit-source-id: c3475c9c132b92c50d8c7c399fca2e9e76870803
Summary:
Source code path in info log is not truncated to the correct length. Fixing it.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5824
Test Plan:
Build and run db_bench. Before:
```
2019/09/18-21:32:34.631181 7fdd42df6700 [_impl/db_impl_write.cc:1654] [default] New memtable created with log file: https://github.com/facebook/rocksdb/issues/9. Immutable memtables: 0.
```
After:
```
2019/09/18-21:36:09.226532 7f141b5f6700 [/db_impl/db_impl_write.cc:1654] [default] New memtable created with log file: https://github.com/facebook/rocksdb/issues/9. Immutable memtables: 0.
```
Reviewed By: cheng-chang
Differential Revision: D17511851
fbshipit-source-id: b2f92c85ce78726c27b7e0e736657fe2f983513e
Summary:
… to CFOptions
https://github.com/facebook/rocksdb/pull/6615 made several compression related options dynamically changeable. They are moved to MutableCFOptions. However, they are not copied back to ColumnFamilyOptions, so the changed values are not written to option files and for some other uses. Fix it by copying them back.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6668
Test Plan: Add a unit test to make sure that when a MutableCFOptions is converted to CFOptions and back to MutableCFOptions, they stay the same. This test would fail without the fix.
Reviewed By: ajkr
Differential Revision: D20923999
fbshipit-source-id: c3bccd6923b00d677764e2269bed6a95ad7ed780
Summary:
This commit is fixing a bug that readrandom test returns many NotFound in db_bench from Version 6.2.
Pull Request resolved: https://github.com/facebook/rocksdb/issues/6664
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6665
Reviewed By: cheng-chang
Differential Revision: D20911298
Pulled By: ajkr
fbshipit-source-id: c2658d4dbb35798ccbf67dff6e64923fb731ef81
Summary:
Although there are tests related to locking in transaction_test, this new test directly tests against TransactionLockMgr.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6599
Test Plan: make transaction_lock_mgr_test && ./transaction_lock_mgr_test
Reviewed By: lth
Differential Revision: D20673749
Pulled By: cheng-chang
fbshipit-source-id: 1fa4a13218e68d785f5a99924556751a8c5c0f31
Summary:
This change is fixing a crash happening in getApproximateSizes JNI implementation. It also reenables Java test that was crashing most likelly because if this bug.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6652
Reviewed By: cheng-chang
Differential Revision: D20874865
Pulled By: pdillinger
fbshipit-source-id: da95516f15e5df2efe1a4e5690a2ce172cb53f87
Summary:
Adding a Java API for rocksdb::CancelAllBackgroundWork() so that the user can call this (when required) before closing the DB. This is to **prevent the crashes when manual compaction is running and the user decides to close the DB**.
Calling CancelAllBackgroundWork() seems to be the recommended way to make sure that it's safe to close the DB (according to RocksDB FAQ: https://github.com/facebook/rocksdb/wiki/RocksDB-FAQ#basic-readwrite).
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6657
Reviewed By: cheng-chang
Differential Revision: D20896395
Pulled By: pdillinger
fbshipit-source-id: 8a8208c10093db09bd35db9af362211897870d96
Summary:
It was incorrectly counting time even for blocks that didn't need decompression.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6658
Test Plan: make check
Reviewed By: ajkr
Differential Revision: D20883522
Pulled By: anand1976
fbshipit-source-id: 33c9c4683f54cad150ab260a69e3ef8aa9aff76a
Summary:
Adding a simple timer support to schedule work at a fixed time.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6543
Test Plan: TODO: clean up the unit tests, and make them better.
Reviewed By: siying
Differential Revision: D20465390
Pulled By: sagar0
fbshipit-source-id: cba143f70b6339863e1d0f8b8bf92e51c2b3d678
Summary:
The raw key bytes are currently dumped directly into the log messages,
which is not ideal if the keys aren't ASCII strings. Null bytes in
particular can cut off bits of the message early.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6616
Reviewed By: ajkr
Differential Revision: D20879218
Pulled By: anand1976
fbshipit-source-id: 825a20715fe6d8012c0163c6e7b8159f7926a1a7
Summary:
When Travis times out, it's hard to determine whether
the last executing thing took an excessively long time or the
sum of all the work just exceeded the time limit. This
change inserts some timestamps in the output that should
make this easier to determine.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6643
Test Plan: CI (Travis mostly)
Reviewed By: anand1976
Differential Revision: D20843901
Pulled By: pdillinger
fbshipit-source-id: e7aae5434b0c609931feddf238ce4355964488b7
Summary:
https://github.com/facebook/rocksdb/pull/6262 causes CLANG analyze to complain. Add assertion to suppress the warning.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6641
Test Plan: Run "clang analyze" and make sure it passes.
Reviewed By: anand1976
Differential Revision: D20841722
fbshipit-source-id: 5fa6e0c5cfe7a822214c9b898a408df59d4fd2cd
Summary:
This is a predecessor to the Configurable PR. This change moves the OptionTypeInfo maps closer to where they will be used.
When the Configurable changes are adopted, these values will become static and not associated with the OptionsHelper.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6198
Reviewed By: siying
Differential Revision: D20778108
Pulled By: zhichao-cao
fbshipit-source-id: a9f85fc73bc53503656e1958ecc1e764052fd1aa
Summary:
I suspect LRUCache could use some optimization, and to support
such an effort, a good benchmarking tool is needed. The existing
cache_bench was heavily skewed toward insertion and lookup misses, and
did not saturate memory with other work. This change should improve
those things to better resemble a real workload.
(All below using clang compiler, for some consistency, but not
necessarily same version and settings.)
The real workload is from production MySQL on RocksDB, filtering stacks
containing "LRU", "ShardedCache" or "CacheShard."
Lookup inclusive: 66%
Insert inclusive: 17%
Release inclusive: 15%
An alternate simulated workload is MySQL running a LinkBench read test:
Lookup inclusive: 54%
Insert inclusive: 24%
Release inclusive: 21%
cache_bench default settings, prior to this change:
Lookup inclusive: 35.8%
Insert inclusive: 63.6%
Release inclusive: 0%
cache_bench after this change (intended as somewhat "tighter" workload
than average production, more like LinkBench):
Lookup inclusive: 52%
Insert inclusive: 20%
Release inclusive: 26%
And top exclusive stacks (portion of stack samples as filtered above):
Production MySQL:
LRUHandleTable::FindPointer: 25.3%
rocksdb::operator==: 15.1% <-- Slice ==
LRUCacheShard::LRU_Remove: 13.8%
ShardedCache::Lookup: 8.9%
__pthread_mutex_lock: 7.1%
LRUCacheShard::LRU_Insert: 6.3%
MurmurHash64A: 4.8% <-- Since upgraded to XXH3p
...
Old cache_bench:
LRUHandleTable::FindPointer: 23.6%
__pthread_mutex_lock: 15.0%
__pthread_mutex_unlock_usercnt: 11.7%
__lll_lock_wait: 8.6%
__lll_unlock_wake: 6.8%
LRUCacheShard::LRU_Insert: 6.0%
ShardedCache::Lookup: 4.4%
LRUCacheShard::LRU_Remove: 2.8%
...
rocksdb::operator==: 0.2% <-- Slice ==
...
New cache_bench:
LRUHandleTable::FindPointer: 22.8%
__pthread_mutex_unlock_usercnt: 14.3%
rocksdb::operator==: 10.5% <-- Slice ==
LRUCacheShard::LRU_Insert: 9.0%
__pthread_mutex_lock: 5.9%
LRUCacheShard::LRU_Remove: 5.0%
...
ShardedCache::Lookup: 2.9%
...
So there's a bit more lock contention in the benchmark than in
production, but otherwise looks similar enough to me. At least it's a
big improvement over the existing code.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6629
Test Plan: No production code changes, ran cache_bench with ASAN
Reviewed By: ltamasi
Differential Revision: D20824318
Pulled By: pdillinger
fbshipit-source-id: 6f8dc5891ead0f87edbed3a615ecd5289d9abe12
Summary:
In CompactionManifestWriteRetryableError in error_handler_fs_test, the manifest write of flush should pass with no fs error. After flush, fs is set to error status and the manifest write of compaction should fail due to the IO Error. Currently, the manifest write of flush is not synced with the compaction in order, which might cause manifest write fails, which will cause test failure. Fixed by adding the LoadDependency of sync-point after flush and before compaction.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6637
Test Plan: pass error_hanlder_fs_tes. Pass make asan_check
Reviewed By: anand1976
Differential Revision: D20826969
Pulled By: zhichao-cao
fbshipit-source-id: fb2e702caa19bd63c82570320536b7acda870ff1
Summary:
With https://github.com/facebook/rocksdb/issues/6262, TSAN complains about data race of some variables. Those variables are used to estimate file size and are accessed in writer and background threads. Since file size estimation doesn't have to be 100% accurate, we make some variables atomic and use relaxed memory order.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6636
Test Plan: Run all tests with TSAN.
Reviewed By: anand1976
Differential Revision: D20820635
fbshipit-source-id: 1ea45ff38be15e33674ffe06b7d42fc9fe161ea5
Summary:
With https://github.com/facebook/rocksdb/issues/6262, UBSAN fails with "division by zero":
[ RUN ] Timestamp/DBBasicTestWithTimestampCompressionSettings.PutAndGetWithCompaction/3
internal_repo_rocksdb/repo/table/block_based/block_based_table_builder.cc:1066:39: runtime error: division by zero
#0 0x7ffb3117b071 in rocksdb::BlockBasedTableBuilder::WriteRawBlock(rocksdb::Slice const&, rocksdb::CompressionType, rocksdb::BlockHandle*, bool) internal_repo_rocksdb/repo/table/block_based/block_based_table_builder.cc:1066
https://github.com/facebook/rocksdb/issues/1 0x7ffb311775e1 in rocksdb::BlockBasedTableBuilder::WriteBlock(rocksdb::Slice const&, rocksdb::BlockHandle*, bool) internal_repo_rocksdb/repo/table/block_based/block_based_table_builder.cc:848
https://github.com/facebook/rocksdb/issues/2 0x7ffb311771a2 in rocksdb::BlockBasedTableBuilder::WriteBlock(rocksdb::BlockBuilder*, rocksdb::BlockHandle*, bool) internal_repo_rocksdb/repo/table/block_based/block_based_table_builder.cc:832
This is caused by not returning immediately after CompressAndVerifyBlock call
in WriteBlock when rep_->status == kBuffered.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6633
Test Plan: Run all existing test.
Reviewed By: anand1976
Differential Revision: D20808366
fbshipit-source-id: 09f24b7c0fbaf4c7a8fc48cac61fa6fcb9b85811
Summary:
Does what it says on the can. Similarly to table files, we need to re-persist
the metadata of live blob files whenever a new manifest file is opened.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6630
Test Plan: `make check`
Reviewed By: riversand963
Differential Revision: D20802126
Pulled By: ltamasi
fbshipit-source-id: 5738692d898790293bf09d66e9997369bbf89566
Summary:
Add `encrypt_data_time` and `decrypt_data_time` perf_context counters to time encryption/decryption time when `EnvEncryption` is enabled.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6596
Test Plan: CI
Reviewed By: anand1976
Differential Revision: D20678617
fbshipit-source-id: 7b57536143aa38509cde011f704de33382169e07
Summary:
This PR adds support for pipelined & parallel compression optimization for `BlockBasedTableBuilder`. This optimization makes block building, block compression and block appending a pipeline, and uses multiple threads to accelerate block compression. Users can set `CompressionOptions::parallel_threads` greater than 1 to enable compression parallelism.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6262
Reviewed By: ajkr
Differential Revision: D20651306
fbshipit-source-id: 62125590a9c15b6d9071def9dc72589c1696a4cb
Summary:
https://github.com/facebook/rocksdb/issues/6247 reports that when write buffer manager fails to insert the dummy entry to block cache, null pointer is still stored and used to release the handle and cause corruption. Fix the bug by not releasing it with null handle.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6619
Test Plan: Add a unit test that fails without the fix.
Reviewed By: ajkr
Differential Revision: D20776769
fbshipit-source-id: 4127fbd9f295a0a3e45774746ffcd91f939f6287
Summary:
These three options should be made dynamically changeable. Simply add them to MutableCFOptions and made the change.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6615
Test Plan: Add a unit test to make sure that SetOptions() can change the options.
Reviewed By: riversand963
Differential Revision: D20755951
fbshipit-source-id: 8165f4fd7a7a665cc7fb049698935022a5d2e7ff
Summary:
For FIFO compaction, we use flush time instead of oldest key time as the
creation time. This is to prevent FIFO compaction dropping files whose oldest
key time is older than TTL but which has newer keys than TTL.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6612
Test Plan: make check
Reviewed By: siying
Differential Revision: D20748217
Pulled By: riversand963
fbshipit-source-id: 3f7b00a847020760537cdddd12f6fe039e5bc663
Summary:
The checksum generator should be released if file_writer fails to reset the pointer.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6611
Test Plan: pass make asan_check
Reviewed By: riversand963
Differential Revision: D20742964
Pulled By: zhichao-cao
fbshipit-source-id: cde41be2edb3d1e56083c2b93e1510fb32556146
Summary:
In the current implementation, sst file checksum is calculated by a shared checksum function object, which may make some checksum function hard to be applied here such as SHA1. In this implementation, each sst file will have its own checksum generator obejct, created by FileChecksumGenFactory. User needs to implement its own FilechecksumGenerator and Factory to plugin the in checksum calculation method.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6600
Test Plan: tested with make asan_check
Reviewed By: riversand963
Differential Revision: D20717670
Pulled By: zhichao-cao
fbshipit-source-id: 2a74c1c280ac11a07a1980185b43b671acaa71c6
Summary:
When creating a database backup, the background threads will not only consume IO resources by copying files, but also consuming CPU such as by computing checksums. During peak times, the CPU consumption by the background threads might affect online queries.
This PR makes it possible to decrease CPU priority of these threads when creating a new backup.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6602
Test Plan: make check
Reviewed By: siying, zhichao-cao
Differential Revision: D20683216
Pulled By: cheng-chang
fbshipit-source-id: 9978b9ed9488e8ce135e90ca083e5b4b7221fd84
Summary:
1. If expiration_time is non-positive, no need to call NowMicros, save a syscall.
2. expire_time should only be set when expired is false.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6586
Test Plan: make check
Reviewed By: lth
Differential Revision: D20673730
Pulled By: cheng-chang
fbshipit-source-id: a69e8d7b16dc6d0d00487bb1c19f0710d79482e2
Summary:
In the current code base, we use Status to get and store the returned status from the call. Specifically, for IO related functions, the current Status cannot reflect the IO Error details such as error scope, error retryable attribute, and others. With the implementation of https://github.com/facebook/rocksdb/issues/5761, we have the new Wrapper for IO, which returns IOStatus instead of Status. However, the IOStatus is purged at the lower level of write path and transferred to Status.
The first job of this PR is to pass the IOStatus to the write path (flush, WAL write, and Compaction). The second job is to identify the Retryable IO Error as HardError, and set the bg_error_ as HardError. In this case, the DB Instance becomes read only. User is informed of the Status and need to take actions to deal with it (e.g., call db->Resume()).
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6487
Test Plan: Added the testing case to error_handler_fs_test. Pass make asan_check
Reviewed By: anand1976
Differential Revision: D20685017
Pulled By: zhichao-cao
fbshipit-source-id: ff85f042896243abcd6ef37877834e26f36b6eb0
Summary:
The last key may hit index of out bound exception when id = 9.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6574
Reviewed By: riversand963
Differential Revision: D20699791
Pulled By: cheng-chang
fbshipit-source-id: 8e2c5be5ff0e53e9857cfd59cea97cff21446819
Summary:
This test was written like a stress test, using up to 3x26GB
RSS memory during parallel 'make check'. Now, while this code is mostly
dormant, I've made the "for Travis" versions of the expensive tests the
canonical versions and disabled the expensive versions. This has the
side benefit of removing some arbitrary conditional compilation.
For unknown reason, the super expensive tests were gated on
Snappy_Supported, which appears to be irrelevant, so I removed it.
The tests can be fixed / improved / migrated to stress test if/when they
are deemed important again.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6601
Test Plan:
make check + CI
./persistent_cache_test Before:
...
[==========] 10 tests from 2 test cases ran. (114541 ms total)
[ PASSED ] 10 tests.
YOU HAVE 1 DISABLED TEST
After:
...
[==========] 3 tests from 2 test cases ran. (1714 ms total)
[ PASSED ] 3 tests.
YOU HAVE 10 DISABLED TESTS
Reviewed By: siying
Differential Revision: D20680983
Pulled By: pdillinger
fbshipit-source-id: 2be0fde13eeb0a71110ac7f5477cfe63996a509e
Summary:
The patch adds a couple of classes to represent metadata about
blob files: `SharedBlobFileMetaData` contains the information elements
that are immutable (once the blob file is closed), e.g. blob file number,
total number and size of blob files, checksum method/value, while
`BlobFileMetaData` contains attributes that can vary across versions like
the amount of garbage in the file. There is a single `SharedBlobFileMetaData`
for each blob file, which is jointly owned by the `BlobFileMetaData` objects
that point to it; `BlobFileMetaData` objects, in turn, are owned by `Version`s
and can also be shared if the (immutable _and_ mutable) state of the blob file
is the same in two versions.
In addition, the patch adds the blob file metadata to `VersionStorageInfo`, and extends
`VersionBuilder` so that it can apply blob file related `VersionEdit`s (i.e. those
containing `BlobFileAddition`s and/or `BlobFileGarbage`), and save blob file metadata
to a new `VersionStorageInfo`. Consistency checks are also extended to ensure
that table files point to blob files that are part of the `Version`, and that all blob files
that are part of any given `Version` have at least some _non_-garbage data in them.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6597
Test Plan: `make check`
Reviewed By: riversand963
Differential Revision: D20656803
Pulled By: ltamasi
fbshipit-source-id: f1f74d135045b3b42d0146f03ee576ef0a4bfd80
Summary:
As the first step of reintroducing eviction statistics for the block
cache, the patch switches from using simple function pointers as deleters
to function objects implementing an interface. This will enable using
deleters that have state, like a smart pointer to the statistics object
that is to be updated when an entry is removed from the cache. For now,
the patch adds a deleter template class `SimpleDeleter`, which simply
casts the `value` pointer to its original type and calls `delete` or
`delete[]` on it as appropriate. Note: to prevent object lifecycle
issues, deleters must outlive the cache entries referring to them;
`SimpleDeleter` ensures this by using the ("leaky") Meyers singleton
pattern.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6545
Test Plan: `make asan_check`
Reviewed By: siying
Differential Revision: D20475823
Pulled By: ltamasi
fbshipit-source-id: fe354c33dd96d9bafc094605462352305449a22a
Summary:
Forward compatibility with new defaults only starts from 5.16
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6598
Test Plan: facebook automated test (so much easier than running myself)
Reviewed By: riversand963
Differential Revision: D20665553
Pulled By: pdillinger
fbshipit-source-id: b846bfaccf4d0946f92d323a3b4ee6e3e548df93
Summary:
And add releases that should have been added before (6.6 - 6.8)
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6594
Test Plan: facebook automated test (so much easier than running myself)
Reviewed By: riversand963
Differential Revision: D20649106
Pulled By: pdillinger
fbshipit-source-id: 78832449d9295580282cebf117e3968362fbdc69
Summary:
Version 4 has been around long enough, for compatibility and
extensive validation, that it should be default.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6582
Test Plan:
CI (w.r.t. changing the default; format_version=4 is well
tested and massively in production at Facebook)
Reviewed By: siying
Differential Revision: D20625233
Pulled By: pdillinger
fbshipit-source-id: 2f83ed874cffa4a39bc7a66cdf3833b978fbb948
Summary:
In automatic compaction, if a compaction is bottommost, it goes to bottom thread pool. We should do the same for manual compaction too.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6593
Test Plan: Add a unit test. See all existing tests pass.
Reviewed By: ajkr
Differential Revision: D20637408
fbshipit-source-id: cb03031e8f895085f7acf6d2d65e69e84c9ddef3
Summary:
Create a thread in DeleteScheduler only when delete rate limit is set
because when there is no rate limit on deletion, a thread per DeleteScheduler
consumes unnecessary resources.
Test Plan: make -j64 check
Reviewed By: riversand963
Differential Revision: D20538138
Pulled By: akankshamahajan15
fbshipit-source-id: 137499e810e817156345c30d627f8678b9adadf7
Summary:
Add timestamp support for MultiGet().
timestamp from readoptions is honored, and timestamps can be returned along with values.
MultiReadRandom perf test (10 minutes) on the same development machine ram drive with the same DB data shows no regression (within marge of error). The test is adapted from https://github.com/facebook/rocksdb/wiki/RocksDB-In-Memory-Workload-Performance-Benchmarks.
base line (commit 17bef7d3a):
multireadrandom : 104.173 micros/op 307167 ops/sec; (5462999 of 5462999 found)
This PR:
multireadrandom : 104.199 micros/op 307095 ops/sec; (5307999 of 5307999 found)
.\db_bench --db=r:\rocksdb.github --num_levels=6 --key_size=20 --prefix_size=20 --keys_per_prefix=0 --value_size=100 --cache_size=2147483648 --cache_numshardbits=6 --compression_type=none --compression_ratio=1 --min_level_to_compress=-1 --disable_seek_compaction=1 --hard_rate_limit=2 --write_buffer_size=134217728 --max_write_buffer_number=2 --level0_file_num_compaction_trigger=8 --target_file_size_base=134217728 --max_bytes_for_level_base=1073741824 --disable_wal=0 --wal_dir=r:\rocksdb.github\WAL_LOG --sync=0 --verify_checksum=1 --statistics=0 --stats_per_interval=0 --stats_interval=1048576 --histogram=0 --use_plain_table=1 --open_files=-1 --memtablerep=prefix_hash --bloom_bits=10 --bloom_locality=1 --duration=600 --benchmarks=multireadrandom --use_existing_db=1 --num=25000000 --threads=32 --allow_concurrent_memtable_write=0
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6483
Reviewed By: anand1976
Differential Revision: D20498373
Pulled By: riversand963
fbshipit-source-id: 8505f22bc40fd791bc7dd05e48d7e67c91edb627
Summary:
When applying a new version in non DB open case, optimize_filters_for_hits is used for max_threads, which is clearly a bug. It is not clear what the indented value in the first place, but it value 1 makes sense here, which would create no extra threads. This bug is not expected to cause user visible problems, assuming C++ implicitly cast bool to 0 or 1.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6576
Test Plan: Run all exsiting test.
Reviewed By: ajkr
Differential Revision: D20602467
fbshipit-source-id: 40b2cd8619aba09ae9242b36c415464db3c9b737
Summary:
The current Env/FileSystem API separation has a couple of issues -
1. It requires the user to specify 2 options - ```Options::env``` and ```Options::file_system``` - which means they have to make code changes to benefit from the new APIs. Furthermore, there is a risk of accessing the same APIs in two different ways, through Env in the old way and through FileSystem in the new way. The two may not always match, for example, if env is ```PosixEnv``` and FileSystem is a custom implementation. Any stray RocksDB calls to env will use the ```PosixEnv``` implementation rather than the file_system implementation.
2. There needs to be a simple way for the FileSystem developer to instantiate an Env for backward compatibility purposes.
This PR solves the above issues and simplifies the migration in the following ways -
1. Embed a shared_ptr to the ```FileSystem``` in the ```Env```, and remove ```Options::file_system``` as a configurable option. This way, no code changes will be required in application code to benefit from the new API. The default Env constructor uses a ```LegacyFileSystemWrapper``` as the embedded ```FileSystem```.
1a. - This also makes it more robust by ensuring that even if RocksDB
has some stray calls to Env APIs rather than FileSystem, they will go
through the same object and thus there is no risk of getting out of
sync.
2. Provide a ```NewCompositeEnv()``` API that can be used to construct a
PosixEnv with a custom FileSystem implementation. This eliminates an
indirection to call Env APIs, and relieves the FileSystem developer of
the burden of having to implement wrappers for the Env APIs.
3. Add a couple of missing FileSystem APIs - ```SanitizeEnvOptions()``` and
```NewLogger()```
Tests:
1. New unit tests
2. make check and make asan_check
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6552
Reviewed By: riversand963
Differential Revision: D20592038
Pulled By: anand1976
fbshipit-source-id: c3801ad4153f96d21d5a3ae26c92ba454d1bf1f7
Summary:
`scratch` is not initialized in `Align` because it will be set outside of it. But clang analyzer is strict on initializing it before return.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6577
Test Plan: make analyze
Reviewed By: siying
Differential Revision: D20607303
Pulled By: cheng-chang
fbshipit-source-id: 2843d759345a057a8e122178d30b90deff0f9b2a
Summary:
The MultiGet test in db_basic_test fails in CircleCI vs2019. The reason is that even Snappy compression is enabled, the first compression type is still kNoCompression. This PR checks the list and ensure that only when compression is enable and the compression type is valid, compression will be enabled. Such that, it will not fail the combined read test in MultiGet.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6578
Test Plan: make check, db_basic_test.
Reviewed By: anand1976
Differential Revision: D20607529
Pulled By: zhichao-cao
fbshipit-source-id: dcead264d5c2da105912c18caad34b8510bb04b0
Summary:
Fix LITE build by excluding some unit tests that use features not supported in LITE.
```
db/db_basic_test.cc:1778:8: error: ‘void rocksdb::{anonymous}::TableFileListener::OnTableFileCreated(const rocksdb::TableFileCreationInfo&)’ marked ‘override’, but does not override
void OnTableFileCreated(const TableFileCreationInfo& info) override {
^~~~~~~~~~~~~~~~~~
make: *** [db/db_basic_test.o] Error 1
```
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6575
Reviewed By: ltamasi
Differential Revision: D20598598
Pulled By: riversand963
fbshipit-source-id: 367f7cb2500360ad57030b138a94c0f731a04339
Summary:
There are situations when RocksDB tries to recover, but the db is in an inconsistent state due to SST files referenced in the MANIFEST being missing. In this case, previous RocksDB will just fail the recovery and return a non-ok status.
This PR enables another possibility. During recovery, RocksDB checks possible MANIFEST files, and try to recover to the most recent state without missing table file. `VersionSet::Recover()` applies version edits incrementally and "materializes" a version only when this version does not reference any missing table file. After processing the entire MANIFEST, the version created last will be the latest version.
`DBImpl::Recover()` calls `VersionSet::Recover()`. Afterwards, WAL replay will *not* be performed.
To use this capability, set `options.best_efforts_recovery = true` when opening the db. Best-efforts recovery is currently incompatible with atomic flush.
Test plan (on devserver):
```
$make check
$COMPILE_WITH_ASAN=1 make all && make check
```
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6334
Reviewed By: anand1976
Differential Revision: D19778960
Pulled By: riversand963
fbshipit-source-id: c27ea80f29bc952e7d3311ecf5ee9c54393b40a8
Summary:
By supporting direct IO in RandomAccessFileReader::MultiRead, the benefits of parallel IO (IO uring) and direct IO can be combined.
In direct IO mode, read requests are aligned and merged together before being issued to RandomAccessFile::MultiRead, so blocks in the original requests might share the same underlying buffer, the shared buffers are returned in `aligned_bufs`, which is a new parameter of the `MultiRead` API.
For example, suppose alignment requirement for direct IO is 4KB, one request is (offset: 1KB, len: 1KB), another request is (offset: 3KB, len: 1KB), then since they all belong to page (offset: 0, len: 4KB), `MultiRead` only reads the page with direct IO into a buffer on heap, and returns 2 Slices referencing regions in that same buffer. See `random_access_file_reader_test.cc` for more examples.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6446
Test Plan: Added a new test `random_access_file_reader_test.cc`.
Reviewed By: anand1976
Differential Revision: D20097518
Pulled By: cheng-chang
fbshipit-source-id: ca48a8faf9c3af146465c102ef6b266a363e78d1
Summary:
When `use_direct_reads` and `use_direct_writes` are `false`, `logical_sector_size_` inside various `*File` implementations are not actually used, so `GetLogicalBlockSize` does not necessarily need to be called for `logical_sector_size_`, just set a default page size.
This is a follow up PR for https://github.com/facebook/rocksdb/pull/6457.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6522
Test Plan: make check
Reviewed By: siying
Differential Revision: D20408885
Pulled By: cheng-chang
fbshipit-source-id: f2d3808f41265237e7fa2c0be9f084f8fa97fe3d
Summary:
When building RocksDB on VS2015, an error shows up with
hash_map.h(39): error C2719: 'value': formal parameter with requested alignment of 8 won't be aligned
Making the reference a reference can solve the problem, and there isn't a reason we can't do that, at least for the current use of the hash map.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6567
Test Plan: See CI tests pass.
Reviewed By: pdillinger
Differential Revision: D20548543
fbshipit-source-id: 255b55d74cf68a0b324e6f504c56608a97ea6276
Summary:
This commit fixes an incorrect version of this change that was previously landed.
On recently adding ARM64 and PPC64LE builds to Travis, we
seem to have hit some parallel build limits that dramatically increased
queue times.
This change majorly limits the configurations for ARM64 and PPC64LE to
build on each pull request, but keeps the large matrix for branch
builds.
In the process, I changed some previously excluded osx build configurations
to happen in branch builds.
NB: we might want to move master branch Travis build to daily trigger
rather than push trigger to further reduce contention.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6557
Test Plan: Travis only
Reviewed By: siying
Differential Revision: D20563425
Pulled By: pdillinger
fbshipit-source-id: d619eb9f196486ed000364aa40de4661f0b1029d
Summary: TestPilot uses two flags to determine whether coverage is already instrumented: `fbcode_macros` and `coverage`. Normally, these two tags are added automatically to cpp tests, but this is a fake cpp test, so we must manually add them. The first is easy - `fbcode_macros` is added by the `custom_unittest` library, which is in `fbcode_macros`, so it is appropriate. The second is harder - we need to verify that we should add the macro. We do this using the `coverage.bzl` functions.
Reviewed By: siying
Differential Revision: D20549040
fbshipit-source-id: d2732b3ec26f3dff065efdf398abe3241075bb2f
Summary:
On recently adding ARM64 and PPC64LE builds to Travis, we
seem to have hit some parallel build limits that dramatically increased
queue times.
This change majorly limits the configurations for ARM64 and PPC64LE to
build on each pull request, but keeps the large matrix for branch
builds.
In the process, I changed some previously excluded osx build configurations
to happen in branch builds.
NB: we might want to move master branch Travis build to daily trigger
rather than push trigger to further reduce contention.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6557
Test Plan: Travis only
Reviewed By: siying
Differential Revision: D20524575
Pulled By: pdillinger
fbshipit-source-id: babcb2c64e195679e472473a1cbdf42de47231ff
Summary:
Each time RocksDB switches to a new MANIFEST file from old one, it calls WriteCurrentStateToManifest() which writes a 'snapshot' of the current in-memory state of versions to the beginning of the new manifest as a bunch of version edits. We can distinguish these version edits from other version edits written during normal operations with a custom, safe-to-ignore tag.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6530
Test Plan: added test to version_edit_test, pass make asan_check
Reviewed By: riversand963
Differential Revision: D20524516
Pulled By: zhichao-cao
fbshipit-source-id: f1de102f5499bfa88dae3caa2f32c7f42cf904db
Summary:
The whole point of the pimpl idiom is to hide implementation details.
Internal helper methods like `CheckConsistency`, `CheckConsistencyForDeletes`,
and `MaybeAddFile` do not belong in the public interface of the class.
In addition, the patch switches to `unique_ptr` for the implementation
object instead of using a raw `delete`.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6556
Test Plan: `make check`
Reviewed By: riversand963
Differential Revision: D20523568
Pulled By: ltamasi
fbshipit-source-id: 5bbb0ccebd0c47a33b815398c7f9cfe13bd775ac
Summary:
Currently, `db_stress` tests a randomly picked one of `GetLiveFiles`,
`GetSortedWalFiles`, and `GetCurrentWalFile` with a 1/N chance when the
command line parameter `get_live_files_and_wal_files_one_in` is specified.
The problem is that `GetSortedWalFiles` and `GetCurrentWalFile` are unreliable
in the sense that they can return errors if another thread removes a WAL file
while they are executing (which is a perfectly plausible and legitimate scenario).
The patch splits this command line parameter into three (one for each API),
and changes the crash test script so that only `GetLiveFiles` is tested during
our continuous crash test runs.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6491
Test Plan:
```
make check
python tools/db_crashtest.py whitebox
```
Reviewed By: siying
Differential Revision: D20312200
Pulled By: ltamasi
fbshipit-source-id: e7c3481eddfe3bd3d5349476e34abc9eee5b7dc8
Summary:
ldb and sst_dump are most important tools and they don't dependend on gflags. In cmake, we don't have an way to only build these two tools and exclude other tools. This is inconvenient if the environment has a problem with gflags. Add such an option WITH_CORE_TOOLS.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6506
Test Plan: cmake and build with WITH_TOOLS and without.
Differential Revision: D20473029
fbshipit-source-id: 3d730fd14bbae6eeeae7f9cc9aec50a4e488ad72
Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/6553
Test Plan:
```
$ make valgrind_test -j24
$ ./folly_synchronization_distributed_mutex_test
DistributedMutex is not supported in ROCKSDB_LITE, on ARM, or in valgrind_test runs
```
Reviewed By: pdillinger
Differential Revision: D20501966
Pulled By: ltamasi
fbshipit-source-id: 386ec5f258f89d0781a36c5b390c665787093a74
Summary:
https://github.com/facebook/rocksdb/pull/6531 removed some code in partitioned index seek logic. By mistake the logic of storing previous index offset is removed, while the logic of using it is preserved, so that the code might use wrong value to determine reseeking condition.
This will trigger a bug, if following a Seek() not going to the last block, SeekToLast() is called, and then Seek() is called which should position the cursor to the block before SeekToLast().
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6551
Test Plan: Add a unit test that reproduces the bug. In the same unit test, also some reseek cases are covered to avoid regression.
Reviewed By: pdillinger
Differential Revision: D20493990
fbshipit-source-id: 3919aa4861c0481ec96844e053048da1a934b91d
Summary:
Reduce runtime by reducing test scale to avoid test time-outs.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6546
Test Plan:
time ./db_with_timestamp_basic_test
and watch internal tests.
Reviewed By: zhichao-cao
Differential Revision: D20479292
Pulled By: riversand963
fbshipit-source-id: c9e4a155be7699dd4de60fa531de86d442a3ba0a
Summary:
Define a private member variable only in debug mode. Without fix, build will fail
```
In file included from table/block_based/partitioned_index_iterator.cc:9:
./table/block_based/partitioned_index_iterator.h:125:32: error: private field 'icomp_' is not used [-Werror,-Wunused-private-field]
const InternalKeyComparator& icomp_;
```
Test plan (dev server)
1. make check
2. Make sure fixed in Travis
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6547
Reviewed By: siying
Differential Revision: D20480027
Pulled By: pdillinger
fbshipit-source-id: 288bc94280e240c3136335b6c73eb1ccb0db459d
Summary:
For s390x support, some updates in newer version of Align.h are
needed. Upgrading just that file as best we can, with one addition to
Portability.h and tweaking new code in Align.h to use C++11 only (no
non-trivial constexpr functions).
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6534
Test Plan: CI, further work in PR https://github.com/facebook/rocksdb/issues/6168
Differential Revision: D20445942
Pulled By: pdillinger
fbshipit-source-id: 0cef3c367463c71f3123d12cdf287c573af5e342
Summary:
There was an alignment bug in our copy of the streaming APIs
for XXH3 (which we dubbed "XXH3p" for "preview" release). Since those
APIs are unused and some values for XXH3 have changed since XXH3p, I'm
simply removing those APIs, expecting it's better to use finalized XXH3
function if/when we decide to use those APIs (e.g. for checksums).
Fixes https://github.com/facebook/rocksdb/issues/6508
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6540
Test Plan: make check
Differential Revision: D20479271
Pulled By: pdillinger
fbshipit-source-id: 246cf1690d614d3b31042b563d249de32dec1e0d
Summary:
When using custom Env, trying to call DestroyDB() with default Options will
fail.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6539
Test Plan: ./db_stress
Differential Revision: D20476204
Pulled By: riversand963
fbshipit-source-id: 612c6754660cc9b5bb3e9c2dbb2f6ecd7f648797
Summary:
I start to see following failures:
tools/db_bench_tool.cc: In constructor ‘rocksdb::NormalDistribution::NormalDistribution(unsigned int, unsigned int)’:
tools/db_bench_tool.cc:1528:58: error: declaration of ‘max’ shadows a member of 'this' [-Werror=shadow]
NormalDistribution(unsigned int min, unsigned int max) :
^
tools/db_bench_tool.cc:1528:58: error: declaration of ‘min’ shadows a member of 'this' [-Werror=shadow]
tools/db_bench_tool.cc: In constructor ‘rocksdb::UniformDistribution::UniformDistribution(unsigned int, unsigned int)’:
tools/db_bench_tool.cc:1546:59: error: declaration of ‘max’ shadows a member of 'this' [-Werror=shadow]
UniformDistribution(unsigned int min, unsigned int max) :
^
tools/db_bench_tool.cc:1546:59: error: declaration of ‘min’ shadows a member of 'this' [-Werror=shadow]
when I build from GCC 4.8. Rename those variables to fix the problem.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6537
Test Plan: make all with the compiler that used to show the failure.
Differential Revision: D20448741
fbshipit-source-id: 18bcf012dbe020f22f79038a9b08f447befa2574
Summary:
Right now block based table iterator is used as both of iterating data for block based table, and for the index iterator for partitioend index. This was initially convenient for introducing a new iterator and block type for new index format, while reducing code change. However, these two usage doesn't go with each other very well. For example, Prev() is never called for partitioned index iterator, and some other complexity is maintained in block based iterators, which is not needed for index iterator but maintainers will always need to reason about it. Furthermore, the template usage is not following Google C++ Style which we are following, and makes a large chunk of code tangled together. This commit separate the two iterators. Right now, here is what it is done:
1. Copy the block based iterator code into partitioned index iterator, and de-template them.
2. Remove some code not needed for partitioned index. The upper bound check and tricks are removed. We never tested performance for those tricks when partitioned index is enabled in the first place. It's unlikelyl to generate performance regression, as creating new partitioned index block is much rarer than data blocks.
3. Separate out the prefetch logic to a helper class and both classes call them.
This commit will enable future follow-ups. One direction is that we might separate index iterator interface for data blocks and index blocks, as they are quite different.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6531
Test Plan: build using make and cmake. And build release
Differential Revision: D20473108
fbshipit-source-id: e48011783b339a4257c204cc07507b171b834b0f
Summary:
If DB is not deleted, in concurrent test, the tests might fail because of the previously existing DB.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6532
Test Plan:
make clean && make -j24 LITE=1 db_logical_block_size_cache_test && ./db_logical_block_size_cache_test
make clean && make -j24 db_logical_block_size_cache_test && ./db_logical_block_size_cache_test
Differential Revision: D20454734
Pulled By: cheng-chang
fbshipit-source-id: 8abede2ec1d79c1a4fe1bc95fbda489f8f7ee052
Summary:
After we had a lot of failures with maven.org downloads, we
wanted an alternative location for downloading binary dependencies.
Hosting them through github would have been good in terms of
organizational and network dependencies, but that approach seems to be
awkward (fake releases, so would need a 'rocksdb-deps' repo) and
strangely complicated for Facebook policy on open source repositories.
This commit moves the downloads (that are not officially hosted by
others on github) from my personal rocksdb fork to an S3 bucket owned
by the Facebook RocksDB AWS account. Facebook employees can access
this through an internal tool, and we should be able to grant permission
to outside collaborators.
Assuming this works out, I will back-port to older branches to stabilize
their CI testing as well.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6526
Test Plan: CI
Differential Revision: D20430130
Pulled By: pdillinger
fbshipit-source-id: df52394a65e0a57942db3039bdaade8a4d520cb2
Summary:
In some of the test, db_basic_test may cause time out due to its long running time. Separate the timestamp related test from db_basic_test to avoid the potential issue.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6516
Test Plan: pass make asan_check
Differential Revision: D20423922
Pulled By: zhichao-cao
fbshipit-source-id: d6306f89a8de55b07bf57233e4554c09ef1fe23a
Summary:
block_based_table_reader.cc is a giant file, which makes it hard for users to navigate the code. Divide the files to multiple files.
Some class templates cannot be moved to .cc file. They are moved to .h files. It is still better than including them all in block_based_table_reader.cc.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6527
Test Plan: "make all check" and "make release". Also build using cmake.
Differential Revision: D20428455
fbshipit-source-id: ca713c698469f07f35bc0c271358c0874ed4eb28
Summary:
This patch based on https://github.com/facebook/rocksdb/issues/5932 offers a better solution to add arm64 to TravisCI matrix.
Really thank adamretter for initiating Arm CI setup.
Difference comparing to amd64:
1. For CMake, as no official arm64 release ready on Kitware page,
a third party (conda-forge) released one is used instead of
building from source. The main reason is to save CI time.
2. Explicit export JAVA_HOME on arm64
3. Disable mingw test
Signed-off-by: Yuqi Gu <yuqi.gu@arm.com>
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6436
Differential Revision: D20428505
Pulled By: pdillinger
fbshipit-source-id: 81ef02435e41480bb71710b783d85ebf452ce926
Summary:
tcc gtest runner need to know the location of the binary in order to collect coverage. We can give them the location in an environment variable.
Note that all these tests will break in tpx currently, though this is a bug in rocksdb's wrapper script, not tpx.
Reviewed By: siying
Differential Revision: D20430043
fbshipit-source-id: c77d5f70bbc28f6011c6f91906bce2ceecc2f167
Summary:
In DBLogicalBlockSizeCacheTest, do not test OpenForReadOnly in LITE mode.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6523
Test Plan: watch test for LITE mode
Differential Revision: D20420321
Pulled By: cheng-chang
fbshipit-source-id: e45bf6f2800206d6f8ce9af7308e76a08de80643
Summary:
In the `.travis.yml` file the `jdk: openjdk7` element is ignored when `language: cpp`. So whatever version of the JDK that was installed in the Travis container was used - typically JDK 11.
To ensure our RocksJava builds are working, we now instead install and use OpenJDK 8. Ideally we would use OpenJDK 7, as RocksJava supports Java 7, but many of the newer Travis containers don't support Java 7, so Java 8 is the next best thing.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6512
Differential Revision: D20388296
Pulled By: pdillinger
fbshipit-source-id: 8bbe6b59b70cfab7fe81ff63867d907fefdd2df1
Summary:
fix a few build warnings that are treated as failures with more strict MSVC warning settings
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6517
Differential Revision: D20401325
Pulled By: pdillinger
fbshipit-source-id: b44979dfaafdc7b3b8cb44a565400a99b331dd30
Summary:
Remove copy of pairs from the for range loop
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6514
Test Plan: make check
Differential Revision: D20389688
Pulled By: cheng-chang
fbshipit-source-id: 1c772091f955be33267514010f3596c61a6f46b5
Summary:
In Linux, when reopening DB with many SST files, profiling shows that 100% system cpu time spent for a couple of seconds for `GetLogicalBufferSize`. This slows down MyRocks' recovery time when site is down.
This PR introduces two new APIs:
1. `Env::RegisterDbPaths` and `Env::UnregisterDbPaths` lets `DB` tell the env when it starts or stops using its database directories . The `PosixFileSystem` takes this opportunity to set up a cache from database directories to the corresponding logical block sizes.
2. `LogicalBlockSizeCache` is defined only for OS_LINUX to cache the logical block sizes.
Other modifications:
1. rename `logical buffer size` to `logical block size` to be consistent with Linux terms.
2. declare `GetLogicalBlockSize` in `PosixHelper` to expose it to `PosixFileSystem`.
3. change the functions `IOError` and `IOStatus` in `env/io_posix.h` to have external linkage since they are used in other translation units too.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6457
Test Plan:
1. A new unit test is added for `LogicalBlockSizeCache` in `env/io_posix_test.cc`.
2. A new integration test is added for `DB` operations related to the cache in `db/db_logical_block_size_cache_test.cc`.
`make check`
Differential Revision: D20131243
Pulled By: cheng-chang
fbshipit-source-id: 3077c50f8065c0bffb544d8f49fb10bba9408d04
Summary:
When users fail to open a DB with file lock failure, it is sometimes hard for users to debug. We now include the time the lock is acquired and the thread ID that acquired the lock, to help users debug problems like this. Default Env's thread ID is used.
Since type of lockedFiles is changed, rename it to follow naming convention too.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6507
Test Plan: Add a unit test and improve an existing test to validate the case.
Differential Revision: D20378333
fbshipit-source-id: 312fe0e9733fd1d1e9969c321b90ce523cf4708a
Summary:
* **macOS version:** 10.15.2 (Catalina)
* **XCode/Clang version:** Apple clang version 11.0.0 (clang-1100.0.33.16)
Before this bugfix the error generated is:
```
In file included from ./util/compression.h:23:
./snappy-1.1.7/snappy.h:76:59: error: unknown type name 'string'; did you mean 'std::string'?
size_t Compress(const char* input, size_t input_length, string* output);
^~~~~~
std::string
/Library/Developer/CommandLineTools/usr/bin/../include/c++/v1/iosfwd:211:65: note: 'std::string' declared here
typedef basic_string<char, char_traits<char>, allocator<char> > string;
^
In file included from db/builder.cc:10:
In file included from ./db/builder.h:12:
In file included from ./db/range_tombstone_fragmenter.h:15:
In file included from ./db/pinned_iterators_manager.h:12:
In file included from ./table/internal_iterator.h:13:
In file included from ./table/format.h:25:
In file included from ./options/cf_options.h:14:
In file included from ./util/compression.h:23:
./snappy-1.1.7/snappy.h:85:19: error: unknown type name 'string'; did you mean 'std::string'?
string* uncompressed);
^~~~~~
std::string
/Library/Developer/CommandLineTools/usr/bin/../include/c++/v1/iosfwd:211:65: note: 'std::string' declared here
typedef basic_string<char, char_traits<char>, allocator<char> > string;
^
2 errors generated.
make: *** [jls/db/builder.o] Error 1
```
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6496
Differential Revision: D20389254
Pulled By: pdillinger
fbshipit-source-id: 2864245c8d0dba7b2ab81294241a62f2adf02e20
Summary:
This helps to diagnose errors in the CMake build where it tries to retrieve dependencies.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6511
Differential Revision: D20387392
Pulled By: pdillinger
fbshipit-source-id: 7028dfd62704bcc747f39ff864ea9c9bf51cd1be
Summary:
It's never too soon to refactor something. The patch splits the recently
introduced (`VersionEdit` related) `BlobFileState` into two classes
`BlobFileAddition` and `BlobFileGarbage`. The idea is that once blob files
are closed, they are immutable, and the only thing that changes is the
amount of garbage in them. In the new design, `BlobFileAddition` contains
the immutable attributes (currently, the count and total size of all blobs, checksum
method, and checksum value), while `BlobFileGarbage` contains the mutable
GC-related information elements (count and total size of garbage blobs). This is a
better fit for the GC logic and is more consistent with how SST files are handled.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6502
Test Plan: `make check`
Differential Revision: D20348352
Pulled By: ltamasi
fbshipit-source-id: ff93f0121e80ab15e0e0a6525ba0d6af16a0e008
Summary:
Add sequence_number_ptr to the checkpoint interface to expose the sequence number during taking the checkpoint. The number will be consistent with the seq # in rocksdb log.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5528
Test Plan: make check -j64
Reviewed By: Winger1994
Differential Revision: D16080209
fbshipit-source-id: 6dc3c7680287ee97d673c5e61f89aae1f43e33df
Summary:
Allow user to specify options.max_open_files != -1 with FIFO compaction.
If max_open_files != -1, not all table files are kept open.
In the past, FIFO style compaction requires all table files to be open in order
to read file creation time from table properties. Later, we added file creation
time to MANIFEST, making it possible to read file creation time without opening
file.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6503
Test Plan: make check
Differential Revision: D20353758
Pulled By: riversand963
fbshipit-source-id: ba5c61a648419e47e9ef6d74e0e280e3ee24f296
Summary:
Preliminary support for iterator with user timestamp. Current implementation does not consider merge operator and reverse iterator. Auto compaction is also disabled in unit tests.
Create an iterator with timestamp.
```
...
read_opts.timestamp = &ts;
auto* iter = db->NewIterator(read_opts);
// target is key without timestamp.
for (iter->Seek(target); iter->Valid(); iter->Next()) {}
for (iter->SeekToFirst(); iter->Valid(); iter->Next()) {}
delete iter;
read_opts.timestamp = &ts1;
// lower_bound and upper_bound are without timestamp.
read_opts.iterate_lower_bound = &lower_bound;
read_opts.iterate_upper_bound = &upper_bound;
auto* iter1 = db->NewIterator(read_opts);
// Do Seek or SeekToFirst()
delete iter1;
```
Test plan (dev server)
```
$make check
```
Simple benchmarking (dev server)
1. The overhead introduced by this PR even when timestamp is disabled.
key size: 16 bytes
value size: 100 bytes
Entries: 1000000
Data reside in main memory, and try to stress iterator.
Repeated three times on master and this PR.
- Seek without next
```
./db_bench -db=/dev/shm/rocksdbtest-1000 -benchmarks=fillseq,seekrandom -enable_pipelined_write=false -disable_wal=true -format_version=3
```
master: 159047.0 ops/sec
this PR: 158922.3 ops/sec (2% drop in throughput)
- Seek and next 10 times
```
./db_bench -db=/dev/shm/rocksdbtest-1000 -benchmarks=fillseq,seekrandom -enable_pipelined_write=false -disable_wal=true -format_version=3 -seek_nexts=10
```
master: 109539.3 ops/sec
this PR: 107519.7 ops/sec (2% drop in throughput)
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6255
Differential Revision: D19438227
Pulled By: riversand963
fbshipit-source-id: b66b4979486f8474619f4aa6bdd88598870b0746
Summary:
In direct IO mode, RandomAccessFileReader::Read allocates an internal aligned buffer, and then copies the result into the scratch buffer. If the result is only temporarily used inside a function, there is no need to do the memcpy and just let the result Slice refer to the internally allocated buffer.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6455
Test Plan: make check
Differential Revision: D20106753
Pulled By: cheng-chang
fbshipit-source-id: 44f505843837bba47a56e3fa2c4dd3bd76486b58
Summary:
In most places in the code the variable names are spelled correctly as
COMMITTED but in a couple places not. This fixes them and ensures the
variable is always called COMMITTED everywhere.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6481
Differential Revision: D20306776
Pulled By: pdillinger
fbshipit-source-id: b6c1bfe41db559b4bc6955c530934460c07f7022
Summary:
`TruncateLastLogAfterRecoverWithoutFlush` case depends on fallocate support
of underlying file system.
On a file system which lacks of this feature, like zfs, it will fail to allocate predefined file size as this test case intends to do;
So a check block is added to detect fallocate support and skip test if not.
The related work is done by JunHe77. Thanks!
Signed-off-by: Yuqi Gu <yuqi.gu@arm.com>
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6437
Differential Revision: D20145032
Pulled By: pdillinger
fbshipit-source-id: c8b691dc508e95acfa2a004ddbc07e2faa76680d
Summary:
In CompactRange, if there is no key in memtable falling in the specified range, then flush is skipped.
This PR extends this skipping logic to SST file levels: it starts compaction from the highest level (starting from L0) that has files with key falling in the specified range, instead of always starts from L0.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6482
Test Plan:
A new test ManualCompactionTest::SkipLevel is added.
Also updated a test related to statistics of index block cache hit in db_test2, the index cache hit is increased by 1 in this PR because when checking overlap for the key range in L0, OverlapWithLevelIterator will do a seek in the table cache iterator, which will read from the cached index.
Also updated db_compaction_test and db_test to use correct range for full compaction.
Differential Revision: D20251149
Pulled By: cheng-chang
fbshipit-source-id: f822157cf4796972bd5035d9d7178d8dfb7af08b
Summary:
In the current code base, we can use FaultInjectionTestEnv to simulate the env issue such as file write/read errors, which are used in most of the test. The PR https://github.com/facebook/rocksdb/issues/5761 introduce the File System as a new Env API. This PR implement the FaultInjectionTestFS, which can be used to simulate when File System has issues such as IO error. user can specify any IOStatus error as input, such that FS corresponding actions will return certain error to the caller.
A set of ErrorHandlerFSTests are introduced for testing
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6414
Test Plan: pass make asan_check, pass error_handler_fs_test.
Differential Revision: D20252421
Pulled By: zhichao-cao
fbshipit-source-id: e922038f8ce7e6d1da329fd0bba7283c4b779a21
Summary:
Check for sys/auxv.h and getauxval before using them as they are not
always available (for example on uclibc)
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6359
Differential Revision: D20239797
fbshipit-source-id: 175a098094d81545628c2372e7c388e70a32fd48
Summary:
this silences following warning from clang-11
```
rocksdb/db/db_impl/db_impl_compaction_flush.cc:1040:21: warning: loop variable 'newf' of type 'const std::pair<int, rocksdb::FileMetaData>' creates a copy from type 'const
std::pair<int\
, rocksdb::FileMetaData>' [-Wrange-loop-analysis]
for (const auto newf : c->edit()->GetNewFiles()) {
^
rocksdb/db/db_impl/db_impl_compaction_flush.cc:1040:10: note: use reference type 'const std::pair<int, rocksdb::FileMetaData> &' to prevent copying
for (const auto newf : c->edit()->GetNewFiles()) {
^~~~~~~~~~~~~~~~~
&
```
Signed-off-by: Kefu Chai <tchaikov@gmail.com>
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6477
Differential Revision: D20211850
Pulled By: ltamasi
fbshipit-source-id: 3e89e13a12bba79f1b934d46b7c4c0576cdafb01
Summary:
When DBImpl::GetCreationTimeOfOldestFile() calls Version::GetCreationTimeOfOldestFile(), the version is not directly or indirectly referenced, so an event like compaction can race with the operation and cause DBImpl::GetCreationTimeOfOldestFile() to access delocated data. This was caught by an ASAN run:
==268==ERROR: AddressSanitizer: heap-use-after-free on address 0x612000b7d198 at pc 0x000018332913 bp 0x7f391510d310 sp 0x7f391510d308
READ of size 8 at 0x612000b7d198 thread T845 (store_load-33)
SCARINESS: 51 (8-byte-read-heap-use-after-free)
#0 0x18332912 in rocksdb::Version::GetCreationTimeOfOldestFile(unsigned long*) rocksdb/src/db/version_set.cc:1488
https://github.com/facebook/rocksdb/issues/1 0x1803ddaa in rocksdb::DBImpl::GetCreationTimeOfOldestFile(unsigned long*) rocksdb/src/db/db_impl/db_impl.cc:4499
https://github.com/facebook/rocksdb/issues/2 0xe24ca09 in rocksdb::StackableDB::GetCreationTimeOfOldestFile(unsigned long*) rocksdb/utilities/stackable_db.h:392
......
0x612000b7d198 is located 216 bytes inside of 296-byte region [0x612000b7d0c0,0x612000b7d1e8)
freed by thread T28 here:
......
https://github.com/facebook/rocksdb/issues/5 0x1832c73f in std::vector<rocksdb::FileMetaData*, std::allocator<rocksdb::FileMetaData*> >::~vector() third-party-buck/platform007/build/libgcc/include/c++/trunk/bits/stl_vector.h:435
https://github.com/facebook/rocksdb/issues/6 0x1832c73f in rocksdb::VersionStorageInfo::~VersionStorageInfo() rocksdb/src/db/version_set.cc:734
https://github.com/facebook/rocksdb/issues/7 0x1832cf42 in rocksdb::Version::~Version() rocksdb/src/db/version_set.cc:758
https://github.com/facebook/rocksdb/issues/8 0x9d1bb5 in rocksdb::Version::Unref() rocksdb/src/db/version_set.cc:2869
https://github.com/facebook/rocksdb/issues/9 0x183e7631 in rocksdb::Compaction::~Compaction() rocksdb/src/db/compaction/compaction.cc:275
https://github.com/facebook/rocksdb/issues/10 0x9e6de6 in std::default_delete<rocksdb::Compaction>::operator()(rocksdb::Compaction*) const third-party-buck/platform007/build/libgcc/include/c++/trunk/bits/unique_ptr.h:78
https://github.com/facebook/rocksdb/issues/11 0x9e6de6 in std::unique_ptr<rocksdb::Compaction, std::default_delete<rocksdb::Compaction> >::reset(rocksdb::Compaction*) third-party-buck/platform007/build/libgcc/include/c++/trunk/bits/unique_ptr.h:376
https://github.com/facebook/rocksdb/issues/12 0x9e6de6 in rocksdb::DBImpl::BackgroundCompaction(bool*, rocksdb::JobContext*, rocksdb::LogBuffer*, rocksdb::DBImpl::PrepickedCompaction*, rocksdb::Env::Priority) rocksdb/src/db/db_impl/db_impl_compaction_flush.cc:2826
https://github.com/facebook/rocksdb/issues/13 0x9ac3b8 in rocksdb::DBImpl::BackgroundCallCompaction(rocksdb::DBImpl::PrepickedCompaction*, rocksdb::Env::Priority) rocksdb/src/db/db_impl/db_impl_compaction_flush.cc:2320
https://github.com/facebook/rocksdb/issues/14 0x9abff7 in rocksdb::DBImpl::BGWorkCompaction(void*) rocksdb/src/db/db_impl/db_impl_compaction_flush.cc:2096
......
Fix the issue by reference the super version and use the referenced version from it.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6473
Test Plan: Run ASAN for all existing tests.
Differential Revision: D20196416
fbshipit-source-id: 5f4a7918110fc7b8dd7841932d376bc9d1e59d6f
Summary:
In the current code base, we can use Directory from Env to manage directory (e.g, Fsync()). The PR https://github.com/facebook/rocksdb/issues/5761 introduce the File System as a new Env API. So we further replace the Directory class in DB with FSDirectory such that we can have more IO information from IOStatus returned by FSDirectory.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6468
Test Plan: pass make asan_check
Differential Revision: D20195261
Pulled By: zhichao-cao
fbshipit-source-id: 93962cb9436852bfcfb76e086d9e7babd461cbe1
Summary:
Added new Get() methods that return timestamp. Dummy implementation is given so that classes derived from DB don't need to be touched to provide their implementation. MultiGet is not included.
ReadRandom perf test (10 minutes) on the same development machine ram drive with the same DB data shows no regression (within marge of error). The test is adapted from https://github.com/facebook/rocksdb/wiki/RocksDB-In-Memory-Workload-Performance-Benchmarks.
base line (commit 72ee067b9):
101.712 micros/op 314602 ops/sec; 36.0 MB/s (5658999 of 5658999 found)
This PR:
100.288 micros/op 319071 ops/sec; 36.5 MB/s (5674999 of 5674999 found)
./db_bench --db=r:\rocksdb.github --num_levels=6 --key_size=20 --prefix_size=20 --keys_per_prefix=0 --value_size=100 --cache_size=2147483648 --cache_numshardbits=6 --compression_type=none --compression_ratio=1 --min_level_to_compress=-1 --disable_seek_compaction=1 --hard_rate_limit=2 --write_buffer_size=134217728 --max_write_buffer_number=2 --level0_file_num_compaction_trigger=8 --target_file_size_base=134217728 --max_bytes_for_level_base=1073741824 --disable_wal=0 --wal_dir=r:\rocksdb.github\WAL_LOG --sync=0 --verify_checksum=1 --delete_obsolete_files_period_micros=314572800 --max_background_compactions=4 --max_background_flushes=0 --level0_slowdown_writes_trigger=16 --level0_stop_writes_trigger=24 --statistics=0 --stats_per_interval=0 --stats_interval=1048576 --histogram=0 --use_plain_table=1 --open_files=-1 --mmap_read=1 --mmap_write=0 --memtablerep=prefix_hash --bloom_bits=10 --bloom_locality=1 --duration=600 --benchmarks=readrandom --use_existing_db=1 --num=25000000 --threads=32
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6409
Differential Revision: D20200086
Pulled By: riversand963
fbshipit-source-id: 490edd74d924f62bd8ae9c29c2a6bbbb8410ca50
Summary:
Both clangd and cquery-language-server requires a compile_commands.json file to
index the project. This file can be ignored by git.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6472
Differential Revision: D20194899
Pulled By: riversand963
fbshipit-source-id: ea1587f2e5d10b7591147073b61efe262a1cf747
Summary:
Some combinatino of --index_with_first_key and --index_shortening_mode can signifcantly improve performance for large values. Expose them in db_bench.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5859
Test Plan: Run them with the new options and observe the behavior.
Differential Revision: D20104434
fbshipit-source-id: 21d48a732a9caf20b82312c7d7557d747ea3c304
Summary:
MultiRead tests in env_test cannot simulate the io_uring case when queries need to be submitted in multiple rounds. Add a new unit test to cover up more requests per MultiRead
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6452
Test Plan: Run it and see it pass when liburing is enabled or not enabled.
Differential Revision: D20078924
fbshipit-source-id: 6cff7fe345a4c5aa47135186e6181bf00df02b68
Summary:
Today `WriteUnpreparedTxn::RollbackInternal` will write the rollback batch assuming that there is only a single subbatch. However, because untracked_keys_ are currently not deduplicated, it's possible for duplicate keys to exist, and thus split the batch. Also, tracked_keys_ also does not support compators outside of the bytewise comparators, so it's possible for duplicates to occur there as well.
To solve this, just pass in the correct subbatch count.
Also, removed `WriteUnpreparedRollbackPreReleaseCallback` to unify the Commit/Rollback codepaths some more.
Also, fixed a bug in `CommitInternal` where if 1. two_write_queue is true and 2. include_data is true, then `WriteUnpreparedCommitEntryPreReleaseCallback` ends up calling `AddCommitted` on the commit time write batch a second time on the second write. To fix, `WriteUnpreparedCommitEntryPreReleaseCallback` is re-initialized.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6463
Differential Revision: D20150153
Pulled By: lth
fbshipit-source-id: df0b42d39406c75af73df995aa1138f0db539cd1
Summary:
If file is not mmaped, CuckooTableReader should not try to read table properties from the file.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6453
Test Plan: Added a new unit test
Differential Revision: D20103334
Pulled By: cheng-chang
fbshipit-source-id: 48539f14d93f6c1ebe12c3df5a14719e9d7b8726
Summary:
Original author: jeffrey-xiao
If we are writing a global seqno for an ingested file, the range
tombstone metablock gets accessed and put into the cache during
ingestion preparation. At the time, the global seqno of the ingested
file has not yet been determined, so the cached block will not have a
global seqno. When the file is ingested and we read its range tombstone
metablock, it will be returned from the cache with no global seqno. In
that case, we use the actual seqnos stored in the range tombstones,
which are all zero, so the tombstones cover nothing.
This commit removes global_seqno_ variable from Block. When iterating
over a block, the global seqno for the block is determined by the
iterator instead of storing this mutable attribute in Block.
Additionally, this commit adds a regression test to check that keys are
deleted when ingesting a file with a global seqno and range deletion
tombstones.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6429
Differential Revision: D19961563
Pulled By: ajkr
fbshipit-source-id: 5cf777397fa3e452401f0bf0364b0750492487b7
Summary:
BlobDB currently does not keep track of blob files: no records are written to
the manifest when a blob file is added or removed, and upon opening a database,
the list of blob files is populated simply based on the contents of the blob directory.
This means that lost blob files cannot be detected at the moment. We plan to solve
this issue by making blob files a part of `Version`; as a first step, this patch makes
it possible to store information about blob files in `VersionEdit`. Currently, this information
includes blob file number, total number and size of all blobs, and total number and size
of garbage blobs. However, the format is extensible: new fields can be added in
both a forward compatible and a forward incompatible manner if needed (similarly
to `kNewFile4`).
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6416
Test Plan: `make check`
Differential Revision: D19894234
Pulled By: ltamasi
fbshipit-source-id: f9753e1f2aedf6dadb70c09b345207cb9c58c329
Summary:
The known bug of liburing has been fixed. Now we can re-enable liburing under Linux
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6451
Test Plan: Watch internal CI
Differential Revision: D20079009
fbshipit-source-id: 04a6f53a900ff721f9a62a188cf906771b5d68d2
Summary:
Make kPageSize extern const size_t (used in draft https://github.com/facebook/rocksdb/issues/6427)
Make kLitteEndian constexpr bool
Clarify a couple of comments
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6443
Test Plan: make check, CI
Differential Revision: D20044558
Pulled By: pdillinger
fbshipit-source-id: e0c5cc13229c82726280dc0ddcba4078346b8418
Summary:
The logic that handles io_uring partial results was wrong. Fix the logic by putting it into a queue and continue reading.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6441
Test Plan: Make sure this patch fixes the application test case where the bug was discovered; in env_test, add a unit test that simulates partial results and make sure the results are still correct.
Differential Revision: D20018616
fbshipit-source-id: 5398a7e34d74c26d52aa69dfd604e93e95d99c62
Summary:
Cleanup some code without any real change in functionality.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6440
Differential Revision: D20015891
Pulled By: riversand963
fbshipit-source-id: 33e18754b0f002006a6d4805e9aaf84c0c8ad25a
Summary:
Adding a C API function to set `row_cache` on `rocksdb_options_t` as this functionality is missing.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6442
Differential Revision: D20036813
Pulled By: riversand963
fbshipit-source-id: c1fa95ea343345fbc1e57961d0d048e0e79be373
Summary:
Currently, a new MANIFEST file is assigned a new file number when 1) no
MANIFEST is open, or 2) current MANIFEST file size exceeds a threshold. This is
not sufficient. There are cases when the caller explicitly specifies that a new
MANIFEST be created. For example, if user sets options.write_dbid_to_manifest = true,
and there are WAL files, then RocksDB will run into an issue during recovery.
`DBImpl::Recover()` will call `LogAndApply()` to write dbid. At this point, the db being
recovered creates a new MANIFEST, say, MANIFEST-000003. Since there are WALs,
`DBImpl::RecoverLogFiles` will be called. Towards the end of this function, we call
`LogAndApply(new_descriptor_log=true)`, which explicitly creates a new MANIFEST.
However, the manifest_file_number is wrong before this fix. Consequently, RocksDB
opens an existing, non-empty file for append, effectively truncating the file to zero.
If a crash occurs, then there will be data loss.
Test Plan (devserver):
make check
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6426
Test Plan: make check
Differential Revision: D19951866
Pulled By: riversand963
fbshipit-source-id: 4b1b9fc28d4fe2ac12764b388ef9e61f05e766da
Summary:
When dynamically linking two binaries together, different builds of RocksDB from two sources might cause errors. To provide a tool for user to solve the problem, the RocksDB namespace is changed to a flag which can be overridden in build time.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6433
Test Plan: Build release, all and jtest. Try to build with ROCKSDB_NAMESPACE with another flag.
Differential Revision: D19977691
fbshipit-source-id: aa7f2d0972e1c31d75339ac48478f34f6cfcfb3e
Summary:
We were removing the file from `log_recycle_files_` before renaming it
with `ReuseWritableFile()`. Since `ReuseWritableFile()` occurs outside
the DB mutex, it was possible for a concurrent full purge to sneak in
and delete the file before it could be renamed. Consequently, `SwitchMemtable()`
would fail and the DB would enter read-only mode.
The fix is to hold the old file number in `log_recycle_files_` until
after the file has been renamed. Full purge uses that list to decide
which files to keep, so it can no longer delete a file pending recycling.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5900
Test Plan: new unit test
Differential Revision: D19771719
Pulled By: ajkr
fbshipit-source-id: 094346349ca3fb499712e62de03905acc30b5ce8
Summary:
For write unprepared, some applications may bypass the transaction api, and write keys directly into the write batch. However, since they are not tracked, rollbacks (both for savepoint and transaction) are not aware that these keys have to be rolled back.
The fix is to track them in `WriteUnpreparedTxn::untracked_keys_`. This is populated whenever we flush unprepared batches into the DB.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6404
Differential Revision: D19842023
Pulled By: lth
fbshipit-source-id: a9edfc643d5c905fc89da9a9a9094d30c9b70108
Summary:
`index` can be replaced by `iter`, saving the computation of `index++`.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6406
Test Plan: make check
Differential Revision: D19905056
Pulled By: cheng-chang
fbshipit-source-id: add4638959c0d2e4e77a11f3fa04ffabaf0de790
Summary:
Previously, when recovering version set, LoadTableHandlers failures are ignored.
If paranoid_checks is true, this failure should not be ignored, otherwise, the opened db might be in an inconsistent state.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6368
Test Plan: make check
Differential Revision: D19713459
Pulled By: cheng-chang
fbshipit-source-id: 68cb94f4f2cc43f8b024b14755193cd45cfcad55
Summary:
I create a new branch from the branch new upsteram/master and "git merge --squash".
Maybe it will fix everything.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6420
Differential Revision: D19897152
Pulled By: zhichao-cao
fbshipit-source-id: 6575d9e3b23e360f42ee1480b43028b5fcc20136
Summary:
During recovery, multiple (un)prepared batches could exist in the same WAL record due to group commit. This breaks an assertion in `MemTableInserter::MarkBeginPrepare`.
To fix, reset unprepared_batch_ to false after `MarkEndPrepare`.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6419
Differential Revision: D19896148
Pulled By: lth
fbshipit-source-id: b1a32ef88f775a0881264a18bd1a4a5b8c85eee3
Summary:
Unfortunately, it seems like mysqld reuses xids across machine restarts. When that happens, we could have something like the following happening:
```
BEGIN_PREPARE(unprepared) Put(a) END_PREPARE(xid = 1)
-- crash and recover with Put(a) rolled back as it was not prepared
BEGIN_PREPARE(prepared) Put(b) END_PREPARE(xid = 1)
COMMIT(xid = 1)
-- crash and recover with both a, b
```
To solve this, we will have to log the rollback batch into the WAL during recovery.
WritePrepared already logs the rollback batch into the WAL, if a rollback happens after prepare, so there is no problem there.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6418
Differential Revision: D19896151
Pulled By: lth
fbshipit-source-id: 2ff65ddc5fe75efd57736fed4b7cd7a109d26609
Summary:
A recent fix related to 2pc https://github.com/facebook/rocksdb/pull/6313/ writes something to WAL, but does not flush or sync. This causes assertion failure "impl->TEST_WALBufferIsEmpty()" if manual_wal_flush = true. We should fsync the entry to make sure a second power reset can recover.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6417
Test Plan: Add manual_wal_flush=true case in TransactionTest.DoubleCrashInRecovery and fix a bug in the test so that the bug can be reproduced. It passes with the fix.
Differential Revision: D19894537
fbshipit-source-id: f1e84e49e2269f583c6019743118292cd8b6598e
Summary:
The DecreaseNumBgThreads test keeps failing on Windows in AppVeyor.
It fails because it depends on a timed wait for the tasks to be dequeued from the threadpool's internal queue, but within the specified time, the task might have not been scheduled onto the newly created threads.
https://github.com/facebook/rocksdb/pull/6232 tries to fix this by waiting for longer time to let the threads scheduled.
This PR tries to fix this by replacing the timed wait with a synchronization on the task's internal conditional variable.
When the number of threads increases, instead of guessing the time needed for the task to be scheduled, it directly blocks on the conditional variable until the task starts running.
But when thread number is reduced, it still does a timed wait, but this does not lead to the flakiness now, will try to remove these timed waits in a future PR.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6393
Test Plan: Wait to see whether AppVeyor tests pass.
Differential Revision: D19890928
Pulled By: cheng-chang
fbshipit-source-id: 4e56e4addf625c98c0876e62d9d57a6f0a156f76
Summary:
Since IO Uring feature is not stable. Remove it from buck configuration.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6415
Test Plan: See internal build pass
Differential Revision: D19892988
fbshipit-source-id: 7fc01efc2af5ed707fb8e4e4674223aeb83cd5ea
Summary:
It's observed on Windows DestroyDB failed to remove the log file because the logger is still alive in sst file manager and holding a handle to the log file. This fix makes sure the logger is released before attempt to clear the database directory.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6308
Differential Revision: D19818829
Pulled By: riversand963
fbshipit-source-id: 54c3e6859aadaaba4a49b3e851b73dc35ec7dc6a
Summary:
Seems like this caused the following test failure on AppVeyor:
DBTest2.CrashInRecoveryMultipleCF
c:\projects\rocksdb\db\db_test_util.cc(107): error: DestroyDB(dbname_, options)
IO error: Failed to delete: C:\projects\rocksdb\db_tests\\testrocksdb-3112//db_test2_10791409581227174103/000013.sst: Access is denied.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6410
Test Plan: Wait to see whether the AppVeyor test passes.
Differential Revision: D19879872
Pulled By: cheng-chang
fbshipit-source-id: 59a9c55ca88566e9210c0b715ecc45a4fd9afe26
Summary:
We realized bugs related to IO Uring. Turn it off by default.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6405
Test Plan: Manually run build_tools/build_detect_platform and observe outputs.
Differential Revision: D19862792
fbshipit-source-id: 5d5e8e2762997b72a145ae59389ef3d7e4ccd060
Summary:
Unrevert the previous fix to propagate error status, and an additional fix to not treat a memtable lookup MergeInProgress status as an error.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6403
Test Plan:
Unit tests
Tried running stress tests but couldn't repro the stress failure
Differential Revision: D19846721
Pulled By: anand1976
fbshipit-source-id: 7db10cccbdc863d9b559497f0a46b608d2488ca4
Summary:
It is very useful to support direct ByteBuffers in Java. It allows to have zero memory copy and some serializers are using that directly so one do not need to create byte[] array for it.
This change also contains some fixes for Windows JNI build.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/2283
Differential Revision: D19834971
Pulled By: pdillinger
fbshipit-source-id: 44173aa02afc9836c5498c592fd1ea95b6086e8e
Summary:
Before this fix, the info_log_level passed from CreateLoggerFromOptions() will
be ignored by AutoRollLogger::logger_. This PR fixes it by setting the info log
level of logger_ during ResetLogger().
Test plan (dev server):
```
COMPILE_WITH_TSAN=1 make all && make check
make all && make check
```
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6388
Differential Revision: D19828045
Pulled By: riversand963
fbshipit-source-id: e1ac7de3a2090bee53b6c667f71a11f1774163e6
Summary:
This reverts commit d70011bccc. The commit is causing some stress test failure due to unexpected Status::MergeInProgress() return for some keys.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6401
Differential Revision: D19826623
Pulled By: anand1976
fbshipit-source-id: edd634cede9cb7bdd2cb8f46e662ea709b16d2f1
Summary:
1. remove AssertEmpty because calling methods on moved objects is discouraged.
2. add a test to assert that the internal buffer is moved instead of being copied.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6399
Test Plan:
make slice_test && ./slice_test
USE_CLANG=1 make analyze
Differential Revision: D19825372
Pulled By: cheng-chang
fbshipit-source-id: 2e26f8ce5ec3edbfce067db045e80bd433e704f4
Summary:
Add a utility class `Defer` to defer the execution of a function until the Defer object goes out of scope.
Used in VersionSet:: ProcessManifestWrites as an example.
The inline comments for class `Defer` have more details.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6382
Test Plan: `make defer_test version_set_test && ./defer_test && ./version_set_test`
Differential Revision: D19797538
Pulled By: cheng-chang
fbshipit-source-id: b1a9b7306e4fd4f48ec2ab55783caa561a315f0f
Summary:
https://github.com/facebook/rocksdb/pull/6383 surfaced an issue with
`VersionSet`/`ReactiveVersionSet` and `AtomicGroupReadBuffer::AddEdit`
(which was added in https://github.com/facebook/rocksdb/pull/5411):
`AddEdit` moves the `VersionEdit` passed to it into `replay_buffer_`,
however, the client `VersionSet` classes keep using it afterwards. This
*seemed to* work before the refactoring but it really did not: since
`VersionEdit` used to have a user-declared destructor, no move
constructor/move assignment operator was generated, and the `move` in
`AddEdit` was really a copy. The patch makes the copy explicit. Note: it
should be possible to rework this logic so that we can get away
with the move but for now, this should fix the issue.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6400
Test Plan:
`make check`
`make analyze`
Differential Revision: D19824466
Pulled By: ltamasi
fbshipit-source-id: f38033967daf2a39c78dcd6e12978bafe37632b4
Summary:
In the current code base, RocksDB generate the checksum for each block and verify the checksum at usage. Current PR enable SST file checksum. After a SST file is generated by Flush or Compaction, RocksDB generate the SST file checksum and store the checksum value and checksum method name in the vs_info and MANIFEST as part for the FileMetadata.
Added the enable_sst_file_checksum to Options to enable or disable file checksum. Added sst_file_checksum to Options such that user can plugin their own SST file checksum calculate method via overriding the SstFileChecksum class. The checksum information inlcuding uint32_t checksum value and a checksum name (string). A new tool is added to LDB such that user can dump out a list of file checksum information from MANIFEST. If user enables the file checksum but does not provide the sst_file_checksum instance, RocksDB will use the default crc32checksum implemented in table/sst_file_checksum_crc32c.h
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6216
Test Plan: Added the testing case in table_test and ldb_cmd_test to verify checksum is correct in different level. Pass make asan_check.
Differential Revision: D19171461
Pulled By: zhichao-cao
fbshipit-source-id: b2e53479eefc5bb0437189eaa1941670e5ba8b87
Summary:
clang analysis shows following warning:
options/options_test.cc:1554:24: warning: The left operand of '-' is a garbage value
(file_size - 1) / readahead_size + 1);
~~~~~~~~~ ^
Explicitly initialize file_size and add an assertion to make clang analysis happy.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6398
Test Plan: Run "make analysis" and see the warning goes away.
Differential Revision: D19819662
fbshipit-source-id: 1589ea91c0c8f78242538f01448e4ad0e5fbc219
Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/6384
Test Plan: Wait and see the analysis result.
Differential Revision: D19781072
fbshipit-source-id: 75e7cb6ee619ebd289841eaabea03dd075c09d3b
Summary:
When `no_slowdown` is enabled, it returns `Status::Incomplete("Write stall")` if a stall would occur. This patch adds descriptive text for when `no_slowdown` and `low_pri` are enabled.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6396
Differential Revision: D19808978
Pulled By: cheng-chang
fbshipit-source-id: a53b0d25ed414c821a086531e0222027f925e627
Summary:
External CMAKE projects cannot add own gtest target due to CMP0002 policy. We should not add gtest target unless we build with tests.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6377
Differential Revision: D19801708
fbshipit-source-id: 662484683e8737e10397ddb0d17705da5243c4f9
Summary:
Currently, any IO errors and checksum mismatches while reading data
blocks, are being ignored by the batched MultiGet. Its only looking at
the GetContext state. Fix that.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6387
Test Plan: Add unit tests
Differential Revision: D19799819
Pulled By: anand1976
fbshipit-source-id: 46133dccbb04e64067b9fe6cda73e282203db969
Summary:
Fixed an error when compiled with -Og:
db/write_thread.cc:183:14: error: 'state' may be used uninitialized in this function [-Werror=maybe-uninitialized]
Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6275
Differential Revision: D19381755
fbshipit-source-id: a90bf3cd4a7248d9d71219e918fc6253deb97e3c
Summary:
Right, when reading from option files, no readahead is used and 8KB buffer is used. It might introduce high latency if the file system provide high latency and doesn't do readahead. Instead, introduce a readahead to the file. When calling inside DB, infer the value from options.log_readahead. Otherwise, a default 512KB readahead size is used.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6372
Test Plan: Add --log_readahead_size in db_bench. Run it with several options and observe read size from option files using strace.
Differential Revision: D19727739
fbshipit-source-id: e6d8053b0a64259abc087f1f388b9cd66fa8a583
Summary:
It's logically correct for PinnableSlice to support move semantics to transfer ownership of the pinned memory region. This PR adds both move constructor and move assignment to PinnableSlice.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6374
Test Plan:
A set of unit tests for the move semantics are added in slice_test.
So `make slice_test && ./slice_test`.
Differential Revision: D19739254
Pulled By: cheng-chang
fbshipit-source-id: f898bd811bb05b2d87384ec58b645e9915e8e0b1
Summary:
This is a bunch of small improvements to `VersionEdit`. Namely, the patch
* Makes the names and order of variables, methods, and code chunks related
to the various information elements more consistent, and adds missing
getters for the sake of completeness.
* Initializes previously uninitialized stack variables.
* Marks all getters const to improve const correctness.
* Adds in-class initializers and removes the default ctor that would
create an object with uninitialized built-in fields and call `Clear`
afterwards.
* Adds a new type alias for new files and changes the existing `typedef`
for deleted files into a type alias as well.
* Makes the helper method `DecodeNewFile4From` private.
* Switches from long-winded iterator syntax to range based loops in a
couple of places.
* Fixes a couple of assignments where an integer 0 was assigned to
boolean members.
* Fixes a getter which used to return a `const std::string` instead of
the intended `const std::string&`.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6383
Test Plan: make check
Differential Revision: D19780537
Pulled By: ltamasi
fbshipit-source-id: b0b4f09fee0ec0e7c7b7a6d76bfe5346e91824d0
Summary:
Since the logic for handling IDENTITY file is now inside `NewDB`, the comment above `NewDB` is no longer relevant.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6379
Test Plan: not needed
Differential Revision: D19795440
Pulled By: cheng-chang
fbshipit-source-id: 0b1cca87ac6d92474701c46aa4c8d4d708bfa19b
Summary:
BlobDB keeps track of the mapping between SSTs and blob files using
the `OnFlushCompleted` and `OnCompactionCompleted` callbacks of
the `EventListener` interface: upon receiving a flush notification, a link
is added between the newly flushed SST and the corresponding blob file;
for compactions, links are removed for the inputs and added for the outputs.
The earlier code performed this link deletion and addition even for
trivially moved files; the new code walks through the two lists together
(in a fashion that's similar to merge sort) and skips such files.
This should mitigate https://github.com/facebook/rocksdb/issues/6338,
wherein an assertion is triggered with the earlier code when a compaction
notification for a trivial move precedes the flush notification for the
moved SST.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6381
Test Plan: make check
Differential Revision: D19773729
Pulled By: ltamasi
fbshipit-source-id: ae0f273ded061110dd9334e8fb99b0d7786650b0
Summary:
The comments are for iterators, not Cleanable.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6371
Test Plan: no need
Differential Revision: D19727527
Pulled By: cheng-chang
fbshipit-source-id: c74aeffa27ea0ce15a36ff6f9694826712cd1c70
Summary:
Several statuses were not checked during DB::Open.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6380
Test Plan: make check
Differential Revision: D19780237
Pulled By: cheng-chang
fbshipit-source-id: c8d189d20344bd1607890dd1449345bda2ef96b9
Summary:
Before this fix, atomic flush codepath may hit an assertion failure on a specific failure case.
If all flush jobs within an atomic flush succeed (they do not write to MANIFEST), but batch writing version edits to MANIFEST fails, then `cfd->imm()->RollbackMemTableFlush()` will be called twice, and the second invocation hits assertion failure `assert(m->flush_in_progress_)` since the first invocation resets the variable `flush_in_progress_` to false already.
Test plan (dev server):
```
./db_flush_test --gtest_filter=DBAtomicFlushTest/DBAtomicFlushTest.RollbackAfterFailToInstallResults
make check
```
Both must succeed.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6385
Differential Revision: D19782943
Pulled By: riversand963
fbshipit-source-id: 84e1592625e729d1b70fdc8479959387a74cb121
Summary:
In `DBSSTTest.SSTsWithLdbSuffixHandling`, some sst files are renamed to ldb files, the original intention of the test is to test that the ldb files can be loaded along with the sst files.
The original test checks this by `ASSERT_NE("NOT_FOUND", Get(Key(k)))`, but the problem is `Get(Key(k))` returns IO error due to path not found instead of NOT_FOUND, so the success of ASSERT_NE does not mean the key can be retrieved.
This PR updates the test to make sure Get(Key(k)) returns the original value.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6370
Test Plan: make db_sst_test && ./db_sst_test
Differential Revision: D19726278
Pulled By: cheng-chang
fbshipit-source-id: 993127f56457b315e669af4eeb92d6f956b7a4b7
Summary:
We see some odd errors complaining math. However, it doesn't seem that it is needed to be included. Remove the include of math.h. Just removing it from db_bench doesn't seem to break anything. Replacing sqrt from std::sqrt seems to work for histogram.cc
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6373
Test Plan: Watch Travis and appveyor to run.
Differential Revision: D19730068
fbshipit-source-id: d3ad41defcdd9f51c2da1a3673fb258f5dfacf47
Summary:
Before this PR it calls GetFileSize() once for each sst file in the DB. This can take a long time if there are be tens of thousands of sst files (e.g. in thousands of column families), and even longer if Env is talking to some remote service rather than local filesystem. This PR makes DB::Open() use sst file sizes that are already known from manifest (typically almost all files in the DB) and only call GetFileSize() for non-sst or obsolete files. Note that GetFileSize() is also called and checked against manifest in CheckConsistency(), so the calls in SstFileManagerImpl were completely redundant.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6363
Test Plan: deployed to a test cluster, looked at a dump of Env calls (from a custom instrumented Env) - no more thousands of GetFileSize()s.
Differential Revision: D19702509
Pulled By: al13n321
fbshipit-source-id: 99f8110620cb2e9d0c092dfcdbb11f3af4ff8b73
Summary:
It's a minor refactoring. We have two ReadFileToString() but they are very similar. Make the one with Env argument calls the one with FS argument instead.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6366
Test Plan: Run all existing tests
Differential Revision: D19712332
fbshipit-source-id: 5ae6fabf6355938690d95cda52afd1f39e0a7823
Summary:
Right now RocksDB gets manifest file size before recovering from it. The information is available in LogReader. Use it instead to prevent one file system call.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6369
Test Plan: Run all existing tests
Differential Revision: D19714872
fbshipit-source-id: 0144be324d403c99e3da875ea2feccc8f64e883d
Summary:
When paranoid_checks is on, DBImpl::CheckConsistency() iterates over all sst files and calls Env::GetFileSize() for each of them. As far as I could understand, this is pretty arbitrary and doesn't affect correctness - if filesystem doesn't corrupt fsynced files, the file sizes will always match; if it does, it may as well corrupt contents as well as sizes, and rocksdb doesn't check contents on open.
If there are thousands of sst files, getting all their sizes takes a while. If, on top of that, Env is overridden to use some remote storage instead of local filesystem, it can be *really* slow and overload the remote storage service. This PR adds an option to not do GetFileSize(); instead it does GetChildren() for parent directory to check that all the expected sst files are at least present, but doesn't check their sizes.
We can't just disable paranoid_checks instead because paranoid_checks do a few other important things: make the DB read-only on write errors, print error messages on read errors, etc.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6353
Test Plan: ran the added sanity check unit test. Will try it out in a LogDevice test cluster where the GetFileSize() calls are causing a lot of trouble.
Differential Revision: D19656425
Pulled By: al13n321
fbshipit-source-id: c2c421b367633033760d1f56747bad206d1fbf82
Summary:
Fix an intermittent failure in
DBErrorHandlingTest.CompactionManifestWriteError due to a race between
background error recovery and the main test thread calling
TEST_WaitForCompact().
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6367
Test Plan: Run the test using gtest_parallel
Differential Revision: D19713802
Pulled By: anand1976
fbshipit-source-id: 29e35dc26e0984fe8334c083e059f4fa1f335d68
Summary:
Right now when reading IDENTITY file, we use a very similar logic as ReadFileToString() while it does an extra file size check, which may be expensive in some file systems. There is no reason to duplicate the logic. Use ReadFileToString() instead.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6365
Test Plan: RUn all existing tests.
Differential Revision: D19709399
fbshipit-source-id: 3bac31f3b2471f98a0d2694278b41e9cd34040fe
Summary:
A relatively recent regression causes for every CF, create and open directory is called for the DB directory, unless CF has a private directory. This doesn't scale well with large number of column families.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6358
Test Plan: Run all existing tests and see it pass. strace with db_bench --num_column_families and observe it doesn't open directory for number of column families.
Differential Revision: D19675141
fbshipit-source-id: da01d9216f1dae3f03d4064fbd88ce71245bd9be
Summary:
MultiDBCompactionError fails when it verifies the number of files on level 0 and level 1 without waiting for compaction to finish.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6266
Differential Revision: D19701639
Pulled By: riversand963
fbshipit-source-id: e96d511bcde705075f073e0b550cebcd2ecfccdc
Summary:
This is a redesign of the API for RocksJava comparators with the aim of improving performance. It also simplifies the class hierarchy.
**NOTE**: This breaks backwards compatibility for existing 3rd party Comparators implemented in Java... so we need to consider carefully which release branches this goes into.
Previously when implementing a comparator in Java the developer had a choice of subclassing either `DirectComparator` or `Comparator` which would use direct and non-direct byte-buffers resepectively (via `DirectSlice` and `Slice`).
In this redesign there we have eliminated the overhead of using the Java Slice classes, and just use `ByteBuffer`s. The `ComparatorOptions` supplied when constructing a Comparator allow you to choose between direct and non-direct byte buffers by setting `useDirect`.
In addition, the `ComparatorOptions` now allow you to choose whether a ByteBuffer is reused over multiple comparator calls, by setting `maxReusedBufferSize > 0`. When buffers are reused, ComparatorOptions provides a choice of mutex type by setting `useAdaptiveMutex`.
---
[JMH benchmarks previously indicated](https://github.com/facebook/rocksdb/pull/6241#issue-356398306) that the difference between C++ and Java for implementing a comparator was ~7x slowdown in Java.
With these changes, when reusing buffers and guarding access to them via mutexes the slowdown is approximately the same. However, these changes offer a new facility to not reuse mutextes, which reduces the slowdown to ~5.5x in Java. We also offer a `thread_local` mechanism for reusing buffers, which reduces slowdown to ~5.2x in Java (closes https://github.com/facebook/rocksdb/pull/4425).
These changes also form a good base for further optimisation work such as further JNI lookup caching, and JNI critical.
---
These numbers were captured without jemalloc. With jemalloc, the performance improves for all tests, and the Java slowdown reduces to between 4.8x and 5.x.
```
ComparatorBenchmarks.put native_bytewise thrpt 25 124483.795 ± 2032.443 ops/s
ComparatorBenchmarks.put native_reverse_bytewise thrpt 25 114414.536 ± 3486.156 ops/s
ComparatorBenchmarks.put java_bytewise_non-direct_reused-64_adaptive-mutex thrpt 25 17228.250 ± 1288.546 ops/s
ComparatorBenchmarks.put java_bytewise_non-direct_reused-64_non-adaptive-mutex thrpt 25 16035.865 ± 1248.099 ops/s
ComparatorBenchmarks.put java_bytewise_non-direct_reused-64_thread-local thrpt 25 21571.500 ± 871.521 ops/s
ComparatorBenchmarks.put java_bytewise_direct_reused-64_adaptive-mutex thrpt 25 23613.773 ± 8465.660 ops/s
ComparatorBenchmarks.put java_bytewise_direct_reused-64_non-adaptive-mutex thrpt 25 16768.172 ± 5618.489 ops/s
ComparatorBenchmarks.put java_bytewise_direct_reused-64_thread-local thrpt 25 23921.164 ± 8734.742 ops/s
ComparatorBenchmarks.put java_bytewise_non-direct_no-reuse thrpt 25 17899.684 ± 839.679 ops/s
ComparatorBenchmarks.put java_bytewise_direct_no-reuse thrpt 25 22148.316 ± 1215.527 ops/s
ComparatorBenchmarks.put java_reverse_bytewise_non-direct_reused-64_adaptive-mutex thrpt 25 11311.126 ± 820.602 ops/s
ComparatorBenchmarks.put java_reverse_bytewise_non-direct_reused-64_non-adaptive-mutex thrpt 25 11421.311 ± 807.210 ops/s
ComparatorBenchmarks.put java_reverse_bytewise_non-direct_reused-64_thread-local thrpt 25 11554.005 ± 960.556 ops/s
ComparatorBenchmarks.put java_reverse_bytewise_direct_reused-64_adaptive-mutex thrpt 25 22960.523 ± 1673.421 ops/s
ComparatorBenchmarks.put java_reverse_bytewise_direct_reused-64_non-adaptive-mutex thrpt 25 18293.317 ± 1434.601 ops/s
ComparatorBenchmarks.put java_reverse_bytewise_direct_reused-64_thread-local thrpt 25 24479.361 ± 2157.306 ops/s
ComparatorBenchmarks.put java_reverse_bytewise_non-direct_no-reuse thrpt 25 7942.286 ± 626.170 ops/s
ComparatorBenchmarks.put java_reverse_bytewise_direct_no-reuse thrpt 25 11781.955 ± 1019.843 ops/s
```
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6252
Differential Revision: D19331064
Pulled By: pdillinger
fbshipit-source-id: 1f3b794e6a14162b2c3ffb943e8c0e64a0c03738
Summary:
DBTest2.ChangePrefixExtractor fails in LITE build because LITE build doesn't support adaptive build. Fix it by removing the stats check but only check correctness.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6356
Test Plan: Run the test with both of LITE and non-LITE build.
Differential Revision: D19669537
fbshipit-source-id: 6d7dd6c8a79f18e80ca1636864b9c71922030d8e
Summary:
Add a unit test for prefix extractor change, including a check that fails due to a bug.
Also comment out the partitioned filter case which will fail the test too.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6323
Test Plan: Run the test and it passes (and fails if the SeekForPrev() part is uncommented)
Differential Revision: D19509744
fbshipit-source-id: 678202ca97b5503e9de73b54b90de9e5ba822b72
Summary:
Background jobs in WritePrepared DB might access the db via a snapshot checker callback. The stress tests therefore should cancel background jobs before deleting the db in ::Reopen.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6355
Differential Revision: D19664132
Pulled By: maysamyabandeh
fbshipit-source-id: 6060a830e8aad0015c10448286ad37c8a346ac01
Summary:
Non-zero recycle_log_file_num is incompatible with kPointInTimeRecovery and kAbsoluteConsistency recovery modes. Currently SanitizeOptions changes the recovery mode to kTolerateCorruptedTailRecords, while to resolve this option conflict it makes more sense to compromise recycle_log_file_num, which is a performance feature, instead of wal_recovery_mode, which is a safety feature.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6351
Differential Revision: D19648931
Pulled By: maysamyabandeh
fbshipit-source-id: dd0bf78349edc007518a00c4d63931fd69294ad7
Summary:
Unit test names, together with other components, are used to create log files
during some internal testing. Overly long names cause infra failure due to file
names being too long.
Look for internal tests.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6352
Differential Revision: D19649307
Pulled By: riversand963
fbshipit-source-id: 6f29de096e33c0eaa87d9c8702f810eda50059e7
Summary:
I set up a mirror of our Java deps on github so we can download
them through github URLs rather than maven.org, which is proving
terribly unreliable from Travis builds.
Also sanitized calls to curl, so they are easier to read and
appropriately fail on download failure.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6348
Test Plan: CI
Differential Revision: D19633621
Pulled By: pdillinger
fbshipit-source-id: 7eb3f730953db2ead758dc94039c040f406790f3
Summary:
Fix for issue https://github.com/facebook/rocksdb/issues/6316
When an append/sync of the manifest file fails due to an IO error such
as NoSpace, we don't always put the DB in read-only mode. This is true
for flush and compactions, as well as foreground operatons such as column family
add/drop, CompactFiles etc. Subsequent changes to the DB will be
recorded in the same manifest file, which would have a corrupted record
in the middle due to the previous failure. On next DB::Open(), it will
fail to process the full manifest and data will be lost.
To fix this, we reset VersionSet::descriptor_log_ on append/sync
failure, which will force a new manifest file to be written on the next
append.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6331
Test Plan: Add new unit tests in error_handler_test.cc
Differential Revision: D19632951
Pulled By: anand1976
fbshipit-source-id: 68d527cb6e59a94cbbbf9f5a17a7f464381d51e3
Summary:
The patch adds statistics support to the new BlobDB garbage collection implementation;
namely, it adds support for the following (pre-existing) tickers:
`BLOB_DB_GC_NUM_FILES`: the number of blob files obsoleted by the GC logic.
`BLOB_DB_GC_NUM_NEW_FILES`: the number of new blob files generated by the GC logic.
`BLOB_DB_GC_FAILURES`: the number of failed GC passes (where a GC pass is
equivalent to a (sub)compaction).
`BLOB_DB_GC_NUM_KEYS_RELOCATED`: the number of blobs relocated to new blob
files by the GC logic.
`BLOB_DB_GC_BYTES_RELOCATED`: the total size of blobs relocated to new blob files.
The tickers `BLOB_DB_GC_NUM_KEYS_OVERWRITTEN`, `BLOB_DB_GC_NUM_KEYS_EXPIRED`,
`BLOB_DB_GC_BYTES_OVERWRITTEN`, `BLOB_DB_GC_BYTES_EXPIRED`, and
`BLOB_DB_GC_MICROS` are not relevant for the new GC logic, and are thus marked
deprecated.
The patch also adds a couple of log messages that log the number and total size of
blobs encountered and relocated during a GC pass, as well as the number of blob
files created and obsoleted.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6296
Test Plan: Extended unit tests and used the BlobDB mode of `db_bench`.
Differential Revision: D19402513
Pulled By: ltamasi
fbshipit-source-id: d53d2bfbf4928a1db1e9346c67ebb9007b8932ec
Summary:
DBTest2.AutoPrefixMode1 doesn't pass because auto prefix mode is not supported there.
Fix it by disabling the test.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6346
Test Plan: Run DBTest2.AutoPrefixMode1 in lite mode
Differential Revision: D19627486
fbshipit-source-id: fbde75260aeecb7e6fc406e09c19a71a95aa5f08
Summary:
Difficult to root cause crash test failures without archiving
db dir. Now all crash test configurations should save the db dir.
Also exit with error code on bad command.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6344
Test Plan:
Hmm, how about this:
for TARGET in stress_crash asan_crash ubsan_crash tsan_crash; do EMAIL=email ONCALL=oncall TRIGGER=all SUBSCRIBER=sub build_tools/rocksdb-lego-determinator $TARGET > tmp && node -c tmp && grep -q Upload tmp || echo Bad; done
Differential Revision: D19625605
Pulled By: pdillinger
fbshipit-source-id: cb84aa93ee80b4534f4c61b90f0e0f99a41155d5
Summary:
db_bloom_filter_test break with clang LITE build with following message:
db/db_bloom_filter_test.cc:23:29: error: unused variable 'kPlainTable' [-Werror,-Wunused-const-variable]
static constexpr PseudoMode kPlainTable = -1;
^
Fix it by moving the declaration out of LITE build
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6340
Test Plan:
USE_CLANG=1 LITE=1 make db_bloom_filter_test
and without LITE=1
Differential Revision: D19609834
fbshipit-source-id: 0e88f5c6759238a94f9880d84c785ac18e7cdd7e
Summary:
In WritePrepared there could be gap in sequence numbers. This breaks the trick we use in kPointInTimeRecovery which assume the first seq in the log right after the corrupted log is one larger than the last seq we read from the logs. To let this trick keep working, we add a dummy entry with the expected sequence to the first log right after recovery.
Also in WriteCommitted, if the log right after the corrupted log is empty, since it has no sequence number to let the sequential trick work, it is assumed as unexpected behavior. This is however expected to happen if we close the db after recovering from a corruption and before writing anything new to it. To remedy that, we apply the same technique by writing a dummy entry to the log that is created after the corrupted log.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6313
Differential Revision: D19458291
Pulled By: maysamyabandeh
fbshipit-source-id: 09bc49e574690085df45b034ca863ff315937e2d
Summary:
Both changes are related to RocksJava:
1. Allow dependencies that are already present on the host system due to Maven to be reused in Docker builds.
2. Extend the `make clean-not-downloaded` target to RocksJava, so that libraries needed as dependencies for the test suite are not deleted and re-downloaded unnecessarily.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6318
Differential Revision: D19608742
Pulled By: pdillinger
fbshipit-source-id: 25e25649e3e3212b537ac4512b40e2e53dc02ae7
Summary:
Add a new option ReadOptions.auto_prefix_mode. When set to true, iterator should return the same result as total order seek, but may choose to do prefix seek internally, based on iterator upper bounds. Also fix two previous bugs when handling prefix extrator changes: (1) reverse iterator should not rely on upper bound to determine prefix. Fix it with skipping prefix check. (2) block-based filter is not handled properly.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6314
Test Plan: (1) add a unit test; (2) add the check to stress test and run see whether it can pass at least one run.
Differential Revision: D19458717
fbshipit-source-id: 51c1bcc5cdd826c2469af201979a39600e779bce
Summary:
./db_compaction_test DBCompactionTest.LevelTtlCascadingCompactions passed 96 / 100 times.
```
With the fix: all runs (tried 100, 1000, 10000) succeed.
```
$ TEST_TMPDIR=/dev/shm ~/gtest-parallel/gtest-parallel ./db_compaction_test --gtest_filter=DBCompactionTest.LevelTtlCascadingCompactions --repeat=1000
[1000/1000] DBCompactionTest.LevelTtlCascadingCompactions (1895 ms)
```
Test Plan:
Build:
```
COMPILE_WITH_TSAN=1 make db_compaction_test -j100
```
Without the fix: a few runs out of 100 fail:
```
$ TEST_TMPDIR=/dev/shm KEEP_DB=1 ~/gtest-parallel/gtest-parallel ./db_compaction_test --gtest_filter=DBCompactionTest.LevelTtlCascadingCompactions --repeat=100
...
...
Note: Google Test filter = DBCompactionTest.LevelTtlCascadingCompactions
[==========] Running 1 test from 1 test case.
[----------] Global test environment set-up.
[----------] 1 test from DBCompactionTest
[ RUN ] DBCompactionTest.LevelTtlCascadingCompactions
db/db_compaction_test.cc:3687: Failure
Expected equality of these values:
oldest_time
Which is: 1580155869
level_to_files[6][0].oldest_ancester_time
Which is: 1580155870
DB is still at /dev/shm//db_compaction_test_6337001442947696266
[ FAILED ] DBCompactionTest.LevelTtlCascadingCompactions (1432 ms)
[----------] 1 test from DBCompactionTest (1432 ms total)
[----------] Global test environment tear-down
[==========] 1 test from 1 test case ran. (1433 ms total)
[ PASSED ] 0 tests.
[ FAILED ] 1 test, listed below:
[ FAILED ] DBCompactionTest.LevelTtlCascadingCompactions
1 FAILED TEST
[80/100] DBCompactionTest.LevelTtlCascadingCompactions returned/aborted with exit code 1 (1489 ms)
[100/100] DBCompactionTest.LevelTtlCascadingCompactions (1522 ms)
FAILED TESTS (4/100):
1419 ms: ./db_compaction_test DBCompactionTest.LevelTtlCascadingCompactions (try https://github.com/facebook/rocksdb/issues/90)
1434 ms: ./db_compaction_test DBCompactionTest.LevelTtlCascadingCompactions (try https://github.com/facebook/rocksdb/issues/84)
1457 ms: ./db_compaction_test DBCompactionTest.LevelTtlCascadingCompactions (try https://github.com/facebook/rocksdb/issues/82)
1489 ms: ./db_compaction_test DBCompactionTest.LevelTtlCascadingCompactions (try https://github.com/facebook/rocksdb/issues/74)
Differential Revision: D19587040
Pulled By: sagar0
fbshipit-source-id: 11191ae9940837643bff47ebe18b299b4be3d950
Summary:
Commits related to hash index fix have been reverted in 6.7.fb branch. Update HISTORY.md to keep it in sync.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6337
Differential Revision: D19593717
fbshipit-source-id: 466178dc6205c9e41ccced41bf281a0952bdc2ca
Summary:
It chooses the oldest memtable, not the largest one. This is an
important difference for users whose CFs receive non-uniform write
rates.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6335
Differential Revision: D19588865
Pulled By: maysamyabandeh
fbshipit-source-id: 62ad4325b0182f5f27858584cd73fd5978fb2cec
Summary:
https://github.com/facebook/rocksdb/pull/6028 introduces a bug for hash index in SST files. If a table reader is created when total order seek is used, prefix_extractor might be passed into table reader as null. While later when prefix seek is used, the same table reader used, hash index is checked but prefix extractor is null and the program would crash.
Fix the issue by fixing http://github.com/facebook/rocksdb/pull/6028 in the way that prefix_extractor is preserved but ReadOptions.total_order_seek is checked
Also, a null pointer check is added so that a bug like this won't cause segfault in the future.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6328
Test Plan: Add a unit test that would fail without the fix. Stress test that reproduces the crash would pass.
Differential Revision: D19586751
fbshipit-source-id: 8de77690167ddf5a77a01e167cf89430b1bfba42
Summary:
Remove the redundant PartitionedFilterBlockBuilder::num_added_ and ::NumAdded since the parent class, FullFilterBlockBuilder, already provides them.
Also rename filters_in_partition_ and filters_per_partition_ to keys_added_to_partition_ and keys_per_partition_ to improve readability.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6299
Test Plan: make check
Differential Revision: D19413278
Pulled By: pdillinger
fbshipit-source-id: 04926ee7874477d659cb2b6ae03f2d995fb747e5
Summary:
Adjusted history for 6.6.1 and 6.6.2, switched master version to 6.7.0.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6320
Differential Revision: D19499272
Pulled By: gfosco
fbshipit-source-id: 2bafb2456951f231e411e9c03aaa4c044f497684
Summary:
The function was left unimplemented. Although we currently don't have a use for that it was declared with an assert(0) to prevent mistakenly using the remove_prefix of the parent class. The function body with only assert(0) however causes issues with some compiler's warning levels. The patch implements the function to avoid the warning.
It also piggybacks some minor code warning for unnecessary semicolons after the function definition.s
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6330
Differential Revision: D19559062
Pulled By: maysamyabandeh
fbshipit-source-id: 3a022484f688c9abd4556e5412bcc2628ab96a00
Summary:
The earlier code used two conflicting definitions for the number of
input records going into a compaction, one based on the
`rocksdb.num.entries` table property and one based on
`CompactionIterationStats`. The first one is correct and in line
with how output records are counted, while the second one incorrectly
ignores input records in various cases when the `CompactionIterator`
advances or reseeks the input iterator (this can happen, amongst other
cases, when dealing with `SingleDelete`s, regular `Delete`s, `Merge`s,
and compaction filters). This can result in the code undercounting the
input records and computing an incorrect value for "records dropped"
during the compaction. The patch fixes this by switching over to the
correct (table property based) input record count for "records dropped".
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6325
Test Plan: Tested using `make check` and `db_bench`.
Differential Revision: D19525491
Pulled By: ltamasi
fbshipit-source-id: 4340b0b2f41546db8e356db70ca02199e48fa636
Summary:
When there is a write stall, the active write group leader calls ```BeginWriteStall()``` to walk the queue of writers and remove any with the ```no_slowdown``` option set. There was a bug in the code which updated the back pointer but not the forward pointer (```link_newer```), corrupting the list and causing some threads to wait forever. This PR fixes it.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6322
Test Plan: Add a unit test in db_write_test
Differential Revision: D19538313
Pulled By: anand1976
fbshipit-source-id: 6fbed819e594913f435886606f5d36f74f235c3a
Summary:
This reverts commit 8e309b35bb.
The stress tests are failing . Revert it until we figure the root cause.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6327
Differential Revision: D19537657
Pulled By: maysamyabandeh
fbshipit-source-id: bf34a5dd720825957729e136e9a5a729a240e61a
Summary:
kHashSearch is incompatible with larger than 1 values for index_block_restart_interval. Setting it to 1 in stress tests would avoid confusion about the test parameters.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6324
Differential Revision: D19525669
Pulled By: maysamyabandeh
fbshipit-source-id: fbf3a797e0ebcebb4d32eba3728cf3583906fc8a
Summary:
This is a simple edit to have two #include file paths be consistent within range_del_aggregator.{h,cc} with everywhere else.
The impact of this inconsistency is that it actual breaks a Bazel based build on the Windows platform. The same pragma once failure occurs with both Windows Visual C++ 2019 and clang for Windows 9.0. Bazel's "sandboxing" of the builds causes both compilers to not properly recognize "rocksdb/types.h" and "include/rocksdb/types.h" to be the same file (also comparator.h). My guess is that the backslash versus forward slash mixing within path names is the underlying issue.
But, everything builds fine once the include paths in these two source files are consistent with the rest of the repository.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6321
Differential Revision: D19506585
Pulled By: ltamasi
fbshipit-source-id: 294c346607edc433ab99eaabc9c880ee7426817a
Summary:
Currently, this test case tries to infer whether
`VersionStorageInfo::UpdateAccumulatedStats` was called during open by
checking the number of files opened against an arbitrary threshold (10).
This makes the test brittle and results in sporadic failures. The patch
changes the test case to use sync points to directly test whether
`UpdateAccumulatedStats` was called.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6306
Test Plan: `make check`
Differential Revision: D19439544
Pulled By: ltamasi
fbshipit-source-id: ceb7adf578222636a0f51740872d0278cd1a914f
Summary:
Block-based table has index has been disabled in crash test due to bugs. We fixed a bug and re-enable it.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6310
Test Plan: Finish one round of "crash_test_with_atomic_flush" test successfully while exclusively running has index. Another run also ran for several hours without failure.
Differential Revision: D19455856
fbshipit-source-id: 1192752d2c1e81ed7e5c5c7a9481c841582d5274
Summary:
With many millions of keys, the old Bloom filter implementation
for the block-based table (format_version <= 4) would have excessive FP
rate due to the limitations of feeding the Bloom filter with a 32-bit hash.
This change computes an estimated inflated FP rate due to this effect
and warns in the log whenever an SST filter is constructed (almost
certainly a "full" not "partitioned" filter) that exceeds 1.5x FP rate
due to this effect. The detailed condition is only checked if 3 million
keys or more have been added to a filter, as this should be a lower
bound for common bits/key settings (< 20).
Recommended remedies include smaller SST file size, using
format_version >= 5 (for new Bloom filter), or using partitioned
filters.
This does not change behavior other than generating warnings for some
constructed filters using the old implementation.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6317
Test Plan:
Example with warning, 15M keys @ 15 bits / key: (working_mem_size_mb is just to stop after building one filter if it's large)
$ ./filter_bench -quick -impl=0 -working_mem_size_mb=1 -bits_per_key=15 -average_keys_per_filter=15000000 2>&1 | grep 'FP rate'
[WARN] [/block_based/filter_policy.cc:292] Using legacy SST/BBT Bloom filter with excessive key count (15.0M @ 15bpk), causing estimated 1.8x higher filter FP rate. Consider using new Bloom with format_version>=5, smaller SST file size, or partitioned filters.
Predicted FP rate %: 0.766702
Average FP rate %: 0.66846
Example without warning (150K keys):
$ ./filter_bench -quick -impl=0 -working_mem_size_mb=1 -bits_per_key=15 -average_keys_per_filter=150000 2>&1 | grep 'FP rate'
Predicted FP rate %: 0.422857
Average FP rate %: 0.379301
$
With more samples at 15 bits/key:
150K keys -> no warning; actual: 0.379% FP rate (baseline)
1M keys -> no warning; actual: 0.396% FP rate, 1.045x
9M keys -> no warning; actual: 0.563% FP rate, 1.485x
10M keys -> warning (1.5x); actual: 0.564% FP rate, 1.488x
15M keys -> warning (1.8x); actual: 0.668% FP rate, 1.76x
25M keys -> warning (2.4x); actual: 0.880% FP rate, 2.32x
At 10 bits/key:
150K keys -> no warning; actual: 1.17% FP rate (baseline)
1M keys -> no warning; actual: 1.16% FP rate
10M keys -> no warning; actual: 1.32% FP rate, 1.13x
25M keys -> no warning; actual: 1.63% FP rate, 1.39x
35M keys -> warning (1.6x); actual: 1.81% FP rate, 1.55x
At 5 bits/key:
150K keys -> no warning; actual: 9.32% FP rate (baseline)
25M keys -> no warning; actual: 9.62% FP rate, 1.03x
200M keys -> no warning; actual: 12.2% FP rate, 1.31x
250M keys -> warning (1.5x); actual: 12.8% FP rate, 1.37x
300M keys -> warning (1.6x); actual: 13.4% FP rate, 1.43x
The reason for the modest inaccuracy at low bits/key is that the assumption of independence between a collision between 32-hash values feeding the filter and an FP in the filter is not quite true for implementations using "simple" logic to compute indices from the stock hash result. There's math on this in my dissertation, but I don't think it's worth the effort just for these extreme cases (> 100 million keys and low-ish bits/key).
Differential Revision: D19471715
Pulled By: pdillinger
fbshipit-source-id: f80c96893a09bf1152630ff0b964e5cdd7e35c68
Summary:
Help users that would benefit most from new Bloom filter
implementation by logging a warning that recommends the using
format_version >= 5.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6312
Test Plan:
$ (for BPK in 10 13 14 19 20 50; do ./filter_bench -quick -impl=0 -bits_per_key=$BPK -m_queries=1 2>&1; done) | grep 'its/key'
Bits/key actual: 10.0647
Bits/key actual: 13.0593
[WARN] [/block_based/filter_policy.cc:546] Using legacy Bloom filter with high (14) bits/key. Significant filter space and/or accuracy improvement is available with format_verion>=5.
Bits/key actual: 14.0581
[WARN] [/block_based/filter_policy.cc:546] Using legacy Bloom filter with high (19) bits/key. Significant filter space and/or accuracy improvement is available with format_verion>=5.
Bits/key actual: 19.0542
[WARN] [/block_based/filter_policy.cc:546] Using legacy Bloom filter with high (20) bits/key. Dramatic filter space and/or accuracy improvement is available with format_verion>=5.
Bits/key actual: 20.0584
[WARN] [/block_based/filter_policy.cc:546] Using legacy Bloom filter with high (50) bits/key. Dramatic filter space and/or accuracy improvement is available with format_verion>=5.
Bits/key actual: 50.0577
Differential Revision: D19457191
Pulled By: pdillinger
fbshipit-source-id: 073d94cde5c70e03a160f953e1100c15ea83eda4
Summary:
When we do concurrently writes, and different write operations will have WAL enable or disable.
But the data from write operation with WAL disabled will still be logged into log files, which will lead to extra disk write/sync since we do not want any guarantee for these part of data.
Detail can be found in https://github.com/facebook/rocksdb/issues/6280. This PR avoid mixing the two types in a write group. The advantage is simpler reasoning about the write group content
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6290
Differential Revision: D19448598
Pulled By: maysamyabandeh
fbshipit-source-id: 3d990a0f79a78ea1bfc90773f6ebafc1884c20de
Summary:
This PR adds a `rocksdb_options_set_atomic_flush` function to the C API.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6307
Differential Revision: D19451313
Pulled By: ltamasi
fbshipit-source-id: 750495642ef55b1ea7e13477f85c38cd6574849c
Summary:
A previous change meant to make db_stress to run on sync=1 mode for 1/20 of the time in crash_test, but a bug caused to to always run on sync=1 mode. Fix it.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6304
Test Plan: Start and kill "python -u tools/db_crashtest.py --simple whitebox" multiple times and observe that most times sync=0 is used while some times sync=1 is used.
Differential Revision: D19433000
fbshipit-source-id: 7a0adba39b17a1b3acbbd791bb0cdb743b91fa95
Summary:
Recent bug fix related to hash index introduced a new bug: hash index can return NotFound but it is not handled by BlockBasedTable::Get(). The end result is that Get() stops being executed too early. Fix it by ignoring NotFound code in Get().
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6305
Test Plan: A problematic DB used to return NotFound incorrectly, and now able to return correct result. Will try to construct a unit test too.0
Differential Revision: D19438925
fbshipit-source-id: e751afa8c13728d56511cfeb1bc811ecb99f3217
Summary:
https://github.com/facebook/rocksdb/pull/2205 introduced a new
configuration option called `max_background_jobs`, superseding the
earlier options `max_background_flushes` and
`max_background_compactions`. However, unlike
`max_background_compactions`, setting `max_background_jobs` dynamically
through the `SetDBOptions` interface does not adjust the size of the
thread pools (see https://github.com/facebook/rocksdb/issues/6298). The
patch fixes this.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6300
Test Plan: Extended unit test.
Differential Revision: D19430899
Pulled By: ltamasi
fbshipit-source-id: 704006605b3c13c3d1b997ccc0831ee369721074
Summary:
Add asserts to show the intentions of result explicitly.
Add examples to show the effect of optimistic transaction more clearly.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6074
Test Plan: `cd examples && make optimistic_transaction_example && ./optimistic_transaction_example`
Differential Revision: D18964309
Pulled By: cheng-chang
fbshipit-source-id: a524616ed9981edf2fd37ae61c5ed18c5cf25f55
Summary:
Recent fix to Prefix Hash https://github.com/facebook/rocksdb/pull/6292 caused a bug that the newly created NotFound status in hash index is never reset. This causes reseek or implict reseek to return wrong results sometimes.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6302
Test Plan:
Add a unit test that would fail. Not fix.
crash test with hash test would fail in several seconds. With the fix, it will run about several minutes before failing with another failure.
Differential Revision: D19424572
fbshipit-source-id: c5276f36a95fd0e2837e30190476d2fe21ed8566
Summary:
As of 1/15/2020, Maven Central does not support plain HTTP. Because of
this, our Travis and AppVeyor builds have started failing during the
assertj download step. This patch will hopefully fix these issues.
See https://blog.sonatype.com/central-repository-moving-to-https
for more info.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6301
Test Plan:
Will monitor the builds. ("I don't always test my changes but when I do,
I do it in production.")
Differential Revision: D19422923
Pulled By: ltamasi
fbshipit-source-id: 76f9a8564a5b66ddc721d705f9cbfc736bf7a97d
Summary:
When prefix is enabled the expected behavior when the prefix of the target does not exist is for Seek is to seek to any key larger than target and SeekToPrev to any key less than the target.
Currently. the prefix index (kHashSearch) returns OK status but sets Invalid() to indicate two cases: a prefix of the searched key does not exist, ii) the key is beyond the range of the keys in SST file. The SeekForPrev implementation in BlockBasedTable thus does not have enough information to know when it should set the index key to first (to return a key smaller than target). The patch fixes that by returning NotFound status for cases that the prefix does not exist. SeekForPrev in BlockBasedTable accordingly SeekToFirst instead of SeekToLast on the index iterator.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6297
Test Plan: SeekForPrev of non-exsiting prefix is added to block_test.cc, and a test case is added in db_test2, which fails without the fix.
Differential Revision: D19404695
fbshipit-source-id: cafbbf95f8f60ff9ede9ccc99d25bfa1cf6fcdc3
Summary:
In addition to removing the earlier partially implemented garbage collection
logic from the BlobDB codebase, the patch also removes the test cases (as well as
the related sync points, as appropriate) that were only relevant for the old
implementation, and reworks the remaining ones so they use the new GC logic.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6278
Test Plan: `make check`
Differential Revision: D19335226
Pulled By: ltamasi
fbshipit-source-id: 0cc1794bc9892feda1426ed5522a318f3cb1b692
Summary:
A recent commit adds a unit test that uses a function not available in LITE build. Fix it by avoiding the call
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6295
Test Plan: Run the test in LITE build and see it passes.
Differential Revision: D19395678
fbshipit-source-id: 37b42835bae02511630d80f7cafb1179401bc033
Summary:
kHashSearch index type is incompatible with index_block_restart_interval larger than 1. The patch asserts that and also resets index_block_restart_interval value if it is incompatible with kHashSearch.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6294
Differential Revision: D19394229
Pulled By: maysamyabandeh
fbshipit-source-id: 8a12712ab25e81094a7f71ecd43f773dd4fb6acd
Summary:
The fractional cascading index is not correctly generated when two files at the same level contains the same smallest or largest user key.
The result would be that it would hit an assertion in debug mode and lower level files might be skipped.
This might cause wrong results when the same user keys are of merge operands and Get() is called using the exact user key. In that case, the lower files would need to further checked.
The fix is to fix the fractional cascading index.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6285
Test Plan: Add a unit test which would cause the assertion which would be fixed.
Differential Revision: D19358426
fbshipit-source-id: 39b2b1558075fd95e99491d462a67f9f2298c48e
Summary:
This makes it easier to call the functions from Rust as otherwise they require mutable types.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6283
Differential Revision: D19349991
Pulled By: wqfish
fbshipit-source-id: e8da7a75efe8cd97757baef8ca844a054f2519b4
Summary:
Look at all compaction input files to compute the oldest ancestor time.
In https://github.com/facebook/rocksdb/issues/5992 we changed how creation_time (aka oldest-ancestor-time) table property of compaction output files is computed from max(creation-time-of-all-compaction-inputs) to min(creation-time-of-all-inputs). This exposed a bug where, during compaction, the creation_time:s of only the L0 compaction inputs were being looked at, and all other input levels were being ignored. This PR fixes the issue.
Some TTL compactions when using Level-Style compactions might not have run due to this bug.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6279
Test Plan: Enhanced the unit tests to validate that the correct time is propagated to the compaction outputs.
Differential Revision: D19337812
Pulled By: sagar0
fbshipit-source-id: edf8a72f11e405e93032ff5f45590816debe0bb4
Summary:
unordered_write is incompatible with non-zero max_successive_merges. Although we check this at runtime, we currently don't prevent the user from setting this combination in options. This has led to stress tests to fail with this combination is tried in ::SetOptions.
The patch fixes that and also reverts the changes performed by https://github.com/facebook/rocksdb/pull/6254, in which max_successive_merges was mistakenly declared incompatible with unordered_write.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6284
Differential Revision: D19356115
Pulled By: maysamyabandeh
fbshipit-source-id: f06dadec777622bd75f267361c022735cf8cecb6
Summary:
Fix compilation under LITE by putting `#ifndef ROCKSDB_LITE` around a code block.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6277
Differential Revision: D19334157
Pulled By: riversand963
fbshipit-source-id: 947111ed68aa550f5ea424b216c1442a8af9e32b
Summary:
Some shadow warning shows up when using gcc 4.8. An example:
./utilities/blob_db/blob_compaction_filter.h: In constructor ‘rocksdb::blob_db::BlobIndexCompactionFilterFactoryBase::BlobIndexCompactionFilterFactoryBase(rocksdb::blob_db::lobDBImpl*, rocksdb::Env*, rocksdb::Statistics*)’:
./utilities/blob_db/blob_compaction_filter.h:121:7: error: declaration of ‘blob_db_impl’ shadows a member of 'this' [-Werror=shadow]
: blob_db_impl_(blob_db_impl), env_(_env), statistics_(_statistics) {}
^
Fix them.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6242
Test Plan: Build and see the warnings go away.
Differential Revision: D19217789
fbshipit-source-id: 8ef631941f23dab47a388e060adec24b72efd65e
Summary:
Right now, when validating prefix iterator, if control iterator is invalidate but prefix iterator shows value, we determine it as a test failure. However, this fails to consider the case where a file or memtable containing a tombstone is filtered out by a prefix bloom filter. The fix is to relax the check in this case. If we are out of prefix range, then ignore the check.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6269
Test Plan: Run crash_test for a short while and it still passes.
Differential Revision: D19317594
fbshipit-source-id: b964a1cdc1df5efe439d4b32f8023e1fbc8598c1
Summary:
The crash test is failing with non-ok status after TransactionDB::Open. This patch adds more debugging information.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6272
Differential Revision: D19314527
Pulled By: maysamyabandeh
fbshipit-source-id: d45ecb0f2144e052fb4b5fdd483150440991a3b4
Summary:
This is the start of some JMH microbenchmarks for RocksJava.
Such benchmarks can help us decide on performance improvements of the Java API.
At the moment, I have only added benchmarks for various Comparator options, as that is one of the first areas where I want to improve performance. I plan to expand this to many more tests.
Details of how to compile and run the benchmarks are in the `README.md`.
A run of these on a XEON 3.5 GHz 4vCPU (QEMU Virtual CPU version 2.5+) / 8GB RAM KVM with Ubuntu 18.04, OpenJDK 1.8.0_232, and gcc 8.3.0 produced the following:
```
# Run complete. Total time: 01:43:17
REMEMBER: The numbers below are just data. To gain reusable insights, you need to follow up on
why the numbers are the way they are. Use profilers (see -prof, -lprof), design factorial
experiments, perform baseline and negative tests that provide experimental control, make sure
the benchmarking environment is safe on JVM/OS/HW level, ask for reviews from the domain experts.
Do not assume the numbers tell you what you want them to tell.
Benchmark (comparatorName) Mode Cnt Score Error Units
ComparatorBenchmarks.put native_bytewise thrpt 25 122373.920 ± 2200.538 ops/s
ComparatorBenchmarks.put java_bytewise_adaptive_mutex thrpt 25 17388.201 ± 1444.006 ops/s
ComparatorBenchmarks.put java_bytewise_non-adaptive_mutex thrpt 25 16887.150 ± 1632.204 ops/s
ComparatorBenchmarks.put java_direct_bytewise_adaptive_mutex thrpt 25 15644.572 ± 1791.189 ops/s
ComparatorBenchmarks.put java_direct_bytewise_non-adaptive_mutex thrpt 25 14869.601 ± 2252.135 ops/s
ComparatorBenchmarks.put native_reverse_bytewise thrpt 25 116528.735 ± 4168.797 ops/s
ComparatorBenchmarks.put java_reverse_bytewise_adaptive_mutex thrpt 25 10651.975 ± 545.998 ops/s
ComparatorBenchmarks.put java_reverse_bytewise_non-adaptive_mutex thrpt 25 10514.224 ± 930.069 ops/s
```
Indicating a ~7x difference between comparators implemented natively (C++) and those implemented in Java. Let's see if we can't improve on that in the near future...
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6241
Differential Revision: D19290410
Pulled By: pdillinger
fbshipit-source-id: 25d44bf3a31de265502ed0c5d8a28cf4c7cb9c0b
Summary:
WritePreparedTxnDB calls CancelAllBackgroundWork in its destructor to avoid dangling references to it from background job's SnapshotChecker callback. However, if the DBImpl is already closed, the info log might be closed with it, which causes memory leak when CancelAllBackgroundWork tries to print to the info log. The patch fixes that by calling CancelAllBackgroundWork only if the db is not closed already.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6268
Differential Revision: D19303439
Pulled By: maysamyabandeh
fbshipit-source-id: 4228a6be7e78d43c90630347baa89b008200bd15
Summary:
This is a continuation of https://github.com/facebook/rocksdb/pull/5320/files
I open a new mr for these purposes, half a year has past since the old mr is posted so it's almost impossible to fulfill some points below on the old mr, especially 5)
1) add validation modes for optimistic txns
2) modify unittests to test both modes
3) make format
4) refine hash functor
5) push to master
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6240
Differential Revision: D19301296
fbshipit-source-id: 5b5b3cbd39558f43947f7d2dec6cd31a06386edb
Summary:
A new interface method Env::GetFreeSpace was added in https://github.com/facebook/rocksdb/issues/4164. It needs to be implemented for Windows port. Some error_handler_test cases fail on Windows because recovery cannot succeed without free space being reported.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6265
Differential Revision: D19303065
fbshipit-source-id: 1f1a83e53f334284781cf61feabc996e87b945ca
Summary:
Currently, the recently-added test DBTest2.SwitchMemtableRaceWithNewManifest
fails in LITE mode since SetOptions() returns "Not supported". I do not want to
put `#ifndef ROCKSDB_LITE` because it reduces test coverage. Instead, just
trigger compaction on a different column family. The bg compaction thread
calling LogAndApply() may race with thread calling SwitchMemtable().
Test Plan (dev server):
make check
OPT=-DROCKSDB_LITE make check
or run DBTest2.SwitchMemtableRaceWithNewManifest 100 times.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6267
Differential Revision: D19301309
Pulled By: riversand963
fbshipit-source-id: 88cedcca2f985968ed3bb234d324ffa2aa04ca50
Summary:
Fix an error message when CURRENT is not found.
Test plan (dev server)
```
make check
```
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6264
Differential Revision: D19300699
Pulled By: riversand963
fbshipit-source-id: 303fa206386a125960ecca1dbdeff07422690caf
Summary:
Add oldest snapshot sequence property, so we can use `db.GetProperty("rocksdb.oldest-snapshot-sequence")` to get the sequence number of the oldest snapshot.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6228
Differential Revision: D19264145
Pulled By: maysamyabandeh
fbshipit-source-id: 67fbe5304d89cbc475bd404e30d1299f7b11c010
Summary:
Reword the error message when keys are not added in strict ascending order.
Specifically, original error message is not clear when application tries to
call SstFileWriter::Merge() with duplicate keys.
Test plan (dev server)
```
make check
```
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6261
Differential Revision: D19290398
Pulled By: riversand963
fbshipit-source-id: 4dc30a701414e6894db2eb024e3734470c22b371
Summary:
It seems that the C-API doesn't expose the range delete functionality at the moment, so add the API.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6259
Differential Revision: D19290320
Pulled By: pdillinger
fbshipit-source-id: 3f403a4c3446d2042d55f1ece7cdc9c040f40c27
Summary:
When measure_io_stats_ is enabled, the volume of logging is beyond the default limit of 512 size. The patch allows the EventLoggerStream to change the limit, and also sets it to 1024 for FlushJob.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6258
Differential Revision: D19279269
Pulled By: maysamyabandeh
fbshipit-source-id: 3fb5d468dad488f289ac99d713378177eb7504d6
Summary:
When called on transactions, MultiGet could return a legit MergeInProgress status. The patch excludes this case from errors.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6257
Differential Revision: D19275787
Pulled By: maysamyabandeh
fbshipit-source-id: f7158229422af015947e592ae066b4273c9fb9a4
Summary:
Stress tests count number of errors and report them at the end. Not all the cases are accompanied with a log line which makes debugging difficult. The patch adds a log line to the remaining cases.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6256
Differential Revision: D19268785
Pulled By: maysamyabandeh
fbshipit-source-id: bdabcaa5c5c7edcb4ce4f25e38fd8a3fd9c7700b
Summary:
allow_concurrent_memtable_write is incompatible with non-zero max_successive_merges. Although we check this at runtime, we currently don't prevent the user from setting this combination in options. This has led to stress tests to fail with this combination is tried in ::SetOptions. The patch fixes that.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6254
Differential Revision: D19265819
Pulled By: maysamyabandeh
fbshipit-source-id: 47f2e2dc26fe0972c7152f4da15dadb9703f1179
Summary:
Clang analyzer was falsely reporting on use of txn=nullptr.
Added a new const variable so that it can properly prune impossible
control flows.
Also, 'make analyze' previously required setting USE_CLANG=1 as an
environment variable, not a make variable, or else compilation errors
like
g++: error: unrecognized command line option ‘-Wshorten-64-to-32’
Now USE_CLANG is not required for 'make analyze' (it's implied) and you
can do an incremental analysis (recompile what has changed) with
'USE_CLANG=1 make analyze_incremental'
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6244
Test Plan: 'make -j24 analyze', 'make crash_test'
Differential Revision: D19225950
Pulled By: pdillinger
fbshipit-source-id: 14f4039aa552228826a2de62b2671450e0fed3cb
Summary:
This commit is suspected in some crash test failures such as
Verification failed for column family 0 key 78438077: Value not found: NotFound:
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6243
Test Plan: 'make check' and start 'make crash_test'
Differential Revision: D19220495
Pulled By: pdillinger
fbshipit-source-id: 6c4709cee80ab4344e06ce360f51e947d79fb3fa
Summary:
Call Transaction::MultiGet from TestMultiGet() in db_stress. We add some Puts/Merges/Deletes into the transaction in order to exercise MultiGetFromBatchAndDB. There is no data verification on read, just check status. There is currently no read data verification in db_stress as it requires synchronization with writes. It needs to be tackled separately.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6227
Test Plan: make crash_test_with_txn
Differential Revision: D19204611
Pulled By: anand1976
fbshipit-source-id: 770d0e30d002e88626c264c58103f1d709bb060c
Summary:
Recently db_stress starts to use a special Env that keeps all manifest files. This should not apply to checkpoint directory and causes test failure like this:
Verification failed: Checkpoint gave inconsistent state. Status is IO error: While mkdir: /dev/shm/rocksdb/rocksdb_crashtest_whitebox/.checkpoint27.tmp: File exists
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6233
Test Plan: Run crash_test with high chance of checkpoint and make sure it doesn't reproduce.
Differential Revision: D19207250
fbshipit-source-id: 12a931379e2e0572bb84aa658b6d03770c8551d4
Summary:
Listners are one source of bugs because we frequently release some mutex to invoke them, which introduce race conditions. Implement all callback functions in db_stress's listener class, and randomly sleep.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6197
Test Plan: Run crash_test for a while and see no obvious problem.
Differential Revision: D19134015
fbshipit-source-id: b9ea8be9366e4501759119520cd4f204943538f6
Summary:
db_stress to execute DB::GetApproximateSizes() with randomized keys and options. Return value is not validated but error will be reported.
Two ways to generate the range keys: (1) two random keys; (2) a small range.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6213
Test Plan: (1) run "make crash_test" for a while; (2) hack the code to ingest some errors to see it is reported.
Differential Revision: D19204665
fbshipit-source-id: 652db36f13bcb5a3bd8fe4a10c0aa22a77a0bce2
Summary:
Currently, db_stress generates fixed length keys of 8 bytes. This patch adds the ability to generate variable length keys. Most of the db_stress code continues to work with a numeric key randomly generated, and the numeric key also acts as an index into the values_ array. The numeric key is mapped to a variable length string key in a deterministic way. Furthermore, the ordering is preserved.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6165
Test Plan: run make crash_test
Differential Revision: D19204646
Pulled By: anand1976
fbshipit-source-id: d2d46a96615b4832a8be2a981f5913905f0e1ca7
Summary:
Several improvements to crash_test/stress_test:
(1) Stress_test to support an parameter of bottommost compression
(2) Rename those FLAGS_* variables that are not gflags to avoid confusion
(3) Crash_test to randomly generate compression type for bottommost compression with half the chance.
(4) Stress_test to sanitize unsupported compression type to snappy, so that crash_test to cover all possible compression types and people don't need to worry about they don't support all comrpession types in their environment.
(5) In crash_test, when generating db_stress command, sort arguments in alphabeta order, so that it is easier to find value for a specific argument.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6215
Test Plan: Run "make crash_test" for a while and see the botommost option shown in LOG files.
Differential Revision: D19171255
fbshipit-source-id: d7001e246c4ff9ee5760776eea0be97738650735
Summary:
1. Cover SeekToFirst() and SeekToLast().
2. Try to record the history of iterator operations.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6166
Test Plan: Do some manual changes in the code to cover the failure cases and see the error printing is correct and SeekToFirst() and SeekToLast() sometimes show up.
Differential Revision: D19047079
fbshipit-source-id: 1ed616f919fe4d32c0a021fc37932a7bd3063bcd
Summary:
There are no API changes ;-)
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6218
Differential Revision: D19200373
Pulled By: pdillinger
fbshipit-source-id: 58d34b01ea53b75a1eccbd72f8b14d6256a7380f
Summary:
Add the verification in operateDB to verify GetLiveFiles, GetSortedWalFiles and GetCurrentWalFile. The test will be called every 1 out of N, N is decided by get_live_files_and_wal_files_one_i, whose default is 1000000.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6224
Test Plan: pass db_stress default run.
Differential Revision: D19183358
Pulled By: zhichao-cao
fbshipit-source-id: 20073cf72ede77a3e0d3cf5f28304f1f605d2b1a
Summary:
As title. We can run non-cf-consistency stress tests with verify_db_one_in>0,
thus remove the check added previously.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6231
Test Plan:
```
make crash_test
```
Differential Revision: D19198295
Pulled By: riversand963
fbshipit-source-id: e874c701bb03ab76eaab00f059dd4032bb2f537f
Summary:
The patch adds support for BlobDB to `db_stress`. Note that BlobDB currently does
not support (amongst other features) Column Families or the `SingleDelete` API,
so for now, those should be disabled on the command line when running `db_stress` in
BlobDB mode (using `-column_families=1` and `-nooverwritepercent=0`,
respectively). Also, some BlobDB features that do not go well with the verification logic
in `db_stress` like TTL and FIFO eviction are not supported currently.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6230
Test Plan:
```
./db_stress -max_key=100000 -use_blob_db -column_families=1 -nooverwritepercent=0 -reopen=1 -blob_db_file_size=1000000 -target_file_size_base=1000000 -blob_db_enable_gc -blob_db_gc_cutoff=0.1 -blob_db_min_blob_size=10 -blob_db_bytes_per_sync=16384
```
Differential Revision: D19191476
Pulled By: ltamasi
fbshipit-source-id: 35840452af8c5e6095249c7fd9a53a119a0985fc
Summary:
Currently, db_stress performs verification by calling `VerifyDb()` at the end of test and optionally before tests start. In case of corruption or incorrect result, it will be too late. This PR adds more verification in two ways.
1. For cf consistency test, each test thread takes a snapshot and verifies every N ops. N is configurable via `-verify_db_one_in`. This option is not supported in other stress tests.
2. For cf consistency test, we use another background thread in which a secondary instance periodically tails the primary (interval is configurable). We verify the secondary. Once an error is detected, we terminate the test and report. This does not affect other stress tests.
Test plan (devserver)
```
$./db_stress -test_cf_consistency -verify_db_one_in=0 -ops_per_thread=100000 -continuous_verification_interval=100
$./db_stress -test_cf_consistency -verify_db_one_in=1000 -ops_per_thread=10000 -continuous_verification_interval=0
$make crash_test
```
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6173
Differential Revision: D19047367
Pulled By: riversand963
fbshipit-source-id: aeed584ad71f9310c111445f34975e5ab47a0615
Summary:
BlobDB currently only supports using the default column family. The earlier
code enforces this by comparing the `ColumnFamilyHandle` passed to the
`Get`/`Put`/etc. call with the handle returned by `DefaultColumnFamily`
(which, at the end of the day, comes from `DBImpl::default_cf_handle_`).
Since other `ColumnFamilyHandle`s can also point to the default column
family, this can reject legitimate requests as well. (As an example,
with the earlier code, the handle returned by `BlobDB::Open` cannot
actually be used in API calls.) The patch fixes this by comparing only
the IDs of the column family handles instead of the pointers themselves.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6226
Test Plan: `make check`
Differential Revision: D19187461
Pulled By: ltamasi
fbshipit-source-id: 54ce2e12ebb1f07e6d1e70e3b1e0213dfa94bda2
Summary:
The new Python syntax check could fail if external entities
were cloned or symlinked to a subdir in a rocksdb git clone. (E.g.
Facebook internal LITE build.) Only look for Python files in specific
subdirs
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6225
Test Plan: python tools/check_all_python.py (still 34 files checked)
Reviewed By: gfosco
Differential Revision: D19186110
Pulled By: pdillinger
fbshipit-source-id: 1fefa54e36b32cd5d96d3d1a43e8a2a694c22ea5
Summary:
Right now BlockBasedTable::ApproximateSize() uses default setting about whether to use total order seek. There is no reason for that. There is no reason to do any filtering for approximate size boundary key, and it may introduce bugs. Disable it.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6222
Test Plan: Run existing tests
Differential Revision: D19184787
fbshipit-source-id: 64180660bd2800914fff75104172b61c06f0b1c9
Summary:
Complete some refactoring called for in https://github.com/facebook/rocksdb/issues/6148. Somehow I got some 'make format' in here for files I didn't change, but that should be OK. (I'm not sure why "hide whitespace changes" doesn't seem to help in review.)
Not addressed in this PR: some operations simply print to stdout rather than failing on discovering a bad status or inconsistency.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6195
Differential Revision: D19131067
Pulled By: pdillinger
fbshipit-source-id: 4f416e6b792023989ef119f385fe122426cb825d
Summary:
This reverts commit 54f9092b0c.
It making our daily stress tests fail. Revert it until the issues are fixed.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6220
Differential Revision: D19179881
Pulled By: maysamyabandeh
fbshipit-source-id: 99de0eaf776567fa81110b9ad2608234a16083ce
Summary:
We're seeing assertion violations like this in crash test:
db_stress: table/block_based/block_based_table_reader.cc:4129: virtual uint64_t rocksdb::BlockBasedTable::ApproximateSize(const rocksdb::Slice&, const rocksdb::Slice&, rocksdb::TableReaderCaller): Assertion `end_offset >= start_offset' failed.***
And ApproximateSize appears only to be called with the level_compaction_dynamic_level_bytes option.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6217
Test Plan:
temporarily put an assert(false) in ApproximateSize and
briefly run 'make crash_test'
Differential Revision: D19179174
Pulled By: pdillinger
fbshipit-source-id: 506e6549aea0da19b363a1a6da04373c364d92e4
Summary:
Adds a python script to syntax check all python files in the
repository and report any errors.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6209
Test Plan:
'make check' with and without seeded syntax errors. Also look
for "No syntax errors in 34 .py files" on success, and in java_test CI output
Differential Revision: D19166756
Pulled By: pdillinger
fbshipit-source-id: 537df464b767260d66810b4cf4c9808a026c58a4
Summary:
Beside extending index_type to kHashSearch, it clarifies in the code base that this feature is incompatible with index_block_restart_interval > 1.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6210
Test Plan:
```
make -j32 crash_test
Differential Revision: D19166567
Pulled By: maysamyabandeh
fbshipit-source-id: 3aaf75a70a8b462d372d43aac69dbd10df303ec7
Summary:
The patch makes it possible to set the BlobDB configuration option
`garbage_collection_cutoff` on the command line. In addition, it changes
the `db_bench` code so that the default values of BlobDB related
parameters are taken from the defaults of the actual BlobDB
configuration options (note: this changes the the default of
`blob_db_bytes_per_sync`).
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6211
Test Plan: Ran `db_bench` with various values of the new parameter.
Differential Revision: D19166895
Pulled By: ltamasi
fbshipit-source-id: 305ccdf0123b9db032b744715810babdc3e3b7d5
Summary:
level passed into ColumnFamilyData::CalculateSSTWriteHint() can be smaller than base_level in current version, which would cause overflow.
We see ubsan complains:
db/compaction/compaction_job.cc:1511:39: runtime error: load of value 4294967295, which is not a valid value for type 'Env::WriteLifeTimeHint'
and I hope this commit fixes it.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6212
Test Plan: Run existing tests and see them to pass.
Differential Revision: D19168442
fbshipit-source-id: bf8fd86f85478ecfa7556db46dc3242de8c83dc9
Summary:
Should fix Travis build error that randomly showed up upon
using Java 13 version of javadoc.
AdvancedColumnFamilyOptionsInterface.java:257: error:
unexpected heading used: <H2>, compared to implicit preceding heading: <H3>
According to this reference https://bugs.openjdk.java.net/browse/JDK-8220379
it should work to start at h4, but that didn't work, so avoiding
headings should be fine.
Also fix Java EnvironmentTest for JDK13.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6208
Test Plan: Travis run on PR (don't have Java 13 handy)
Differential Revision: D19163105
Pulled By: pdillinger
fbshipit-source-id: 4a9419cbe7ef780fba771b8a1508e1ea80d17b3e
Summary:
Right now, sometimes file prefetching is still on when mmap is enabled. This causes bug of reading wrong data. In this commit, we remove all those possible paths.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6206
Test Plan: make crash_test with compaction_readahead_size, which used to fail. RUn all existing tests.
Differential Revision: D19149429
fbshipit-source-id: 9e18ea8c566e416aac9647bdd05afe596634791b
Summary:
buf_offset does not need to get the value from req.len for othe final block. It can cause test fail for clan_analyze. Remove it.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6204
Test Plan: pass make asan_check
Differential Revision: D19145335
Pulled By: zhichao-cao
fbshipit-source-id: 8f6e74565746381b5c5ef598b97d746517b36e5b
Summary:
Add an option to db_stress, verify_checksum_one_in, to call DB::VerifyChecksum() once every N ops.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6203
Differential Revision: D19145753
Pulled By: anand1976
fbshipit-source-id: d09edf21f309ad53aa40dd25b7a563d50665fd8b
Summary:
The bad code was:
```
mutex.Lock(); // `mutex` protects `container`
for (auto& x : container) {
mutex.Unlock();
// do stuff to x
mutex.Lock();
}
```
It's incorrect because both `x` and the iterator may become invalid if another thread modifies the container while this thread is not holding the mutex.
Broken by https://github.com/facebook/rocksdb/pull/5796 - it replaced a `while (!container.empty())` loop with a `for (auto x : container)`.
(RocksDB code does a lot of such unlocking+re-locking of mutexes, and this type of bugs comes up a lot :/ )
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6193
Test Plan: Ran some logdevice integration tests that were crashing without this fix.
Differential Revision: D19116874
Pulled By: al13n321
fbshipit-source-id: 9672bc4227c1b68f46f7436db2b96811adb8c703
Summary:
Fix two crash test issues:
1. sync mode should not run with disable_wal=true
2. disable "compaction_readahead_size" for now. With it on, some block checksum verification failure will happen in compaction paths. Not sure why, but disable it for now to keep the test clean.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6200
Test Plan: Run "make crash_test" and "make crash_test_with_atomic_flush" and see it runs way longer than before the fix without failing.
Differential Revision: D19143493
fbshipit-source-id: 438fad52fbda60aafd142e1b65578addbe7d72b1
Summary:
Cuts about 30-60 seconds to from each Travis Linux build, and about 15 minutes from each macOS build
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6181
Differential Revision: D19098357
Pulled By: pdillinger
fbshipit-source-id: 863dd1ab09076ad9b03c2b7914908359628315ae
Summary:
I found that CleanupSuperVersion() may block Get() for 30ms+ （per MemTable is 256MB）.
Then I found "delete sv" in ~SuperVersion() takes the time.
The backtrace looks like this
DBImpl::GetImpl() -> DBImpl::ReturnAndCleanupSuperVersion() ->
DBImpl::CleanupSuperVersion() : delete sv; -> ~SuperVersion()
I think it's better to delete in a background thread, please review it。
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6146
Differential Revision: D18972066
fbshipit-source-id: 0f7b0b70b9bb1e27ad6fc1c8a408fbbf237ae08c
Summary:
With https://github.com/facebook/rocksdb/pull/6121, errors returned by `PrepareBlobValue`
result in `CompactionIterator::status_` being set to `Corruption` or `IOError`
as appropriate, however, `valid_` is not set to `false`. The error is eventually propagated in
`CompactionJob::ProcessKeyValueCompaction` but only after the main loop completes.
Setting `valid_` to `false` upon errors enables us to terminate the loop early and fail the
compaction sooner.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6170
Test Plan:
Ran `make check` and used `db_bench` in BlobDB mode.
fbshipit-source-id: a2ca88a3ca71115e2605bd34a4c795d8a28bef27
Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/6192
Test Plan:
Add a unit test that fails without the fix and passes now
make check
Differential Revision: D19124781
Pulled By: anand1976
fbshipit-source-id: 8c8cb6fa16c3fc23ec011e168561a13f76bbd783
Summary:
As title. Previous assumption was that the underlying lib can always return
a shared_ptr<Env>. This is too strong. Therefore, we use Env::LoadEnv to relax
it.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6196
Test Plan: make check
Differential Revision: D19133199
Pulled By: riversand963
fbshipit-source-id: c83a0c02a42610d077054f2de1acfc45126b3a75
Summary:
In https://github.com/facebook/rocksdb/issues/6174 we fixed the stress test to respect the CancelAllBackgroundWork + Close order for WritePrepared transactions. The fix missed to take into account that some invocation of CancelAllBackgroundWork are with wait=false parameter which essentially breaks the order.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6191
Differential Revision: D19102709
Pulled By: maysamyabandeh
fbshipit-source-id: f4e7b5fdae47ff1c1ac284ba1cf67d5d3f3d03eb
Summary:
In the current MultiGet, if the KV-pairs do not belong to the data blocks in the block cache, multiple blocks are read from a SST. It will trigger one block read for each block request and read them in parallel. In some cases, if some data blocks are adjacent in the SST, the reads for these blocks can be combined to a single large read, which can reduce the system calls and reduce the read latency if possible.
Considering to fill the block cache, if multiple data blocks are in the same memory buffer, we need to copy them to the heap separately. Therefore, only in the case that 1) data block compression is enabled, and 2) compressed block cache is null, we can do combined read. Otherwise, extra memory copy is needed, which may cause extra overhead. In the current case, data blocks will be uncompressed to a new memory space.
Also, in the case that 1) data block compression is enabled, and 2) compressed block cache is null, it is possible the data block is actually not compressed. In the current logic, these data blocks will not be added to the uncompressed_cache. So if memory buffer is shared and the data block is not compressed, the data block are copied to the head and fill the cache.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6089
Test Plan: Added test case to ParallelIO.MultiGet. Pass make asan_check
Differential Revision: D18734668
Pulled By: zhichao-cao
fbshipit-source-id: 67c5615ed373e51e42635fd74b36f8f3a66d5da4
Summary:
Several options are trivially added to crash test and random values are picked.
Made simple test run non-dynamic level and normal test run dynamic level.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6176
Test Plan: Run crash_test and watch the printing
Differential Revision: D19053955
fbshipit-source-id: 958cb43c968541ebd87ed4d91e778bd1d40e7502
Summary:
compaction history is stored in manifest files. Preserve all of them in db_stress would help debugging.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6142
Test Plan: Run db_stress and observe that manifest files are preserved. Run whole crash_test and see how DB directory looks like.
Differential Revision: D19047026
fbshipit-source-id: f83c3e0bb5332b1b4768be5dcee56a24f9b760a9
Summary:
In the current db_stress, all the keys are generated randomly and follows the uniform distribution. In order to test some corner cases that some key are always updated or read, we need to generate the key based on other distributions. In this PR, the key is generated based on Zipfian distribution and the skewness can be controlled by setting hot_key_alpha (0.8 to 1.5 is suggested). The larger hot_key_alpha is, the more skewed will be. Not that, usually, if hot_key_alpha is larger than 2, there might be only 1 or 2 keys that are generated. If hot_key_alpha is 0, it generate the key follows uniform distribution (random key)
Testing plan: pass the db_stress and printed the keys to make sure it follows the distribution.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6163
Differential Revision: D18978480
Pulled By: zhichao-cao
fbshipit-source-id: e123b4865477f7478e83fb581f9576bada334680
Summary:
https://github.com/facebook/rocksdb/pull/6177 introduced a data race
involving `MemTableList::InstallNewVersion` and `MemTableList::NumFlushed`.
The patch fixes this by caching whether the current version has any
memtable history (i.e. flushed memtables that are kept around for
transaction conflict checking) in an `std::atomic<bool>` member called
`current_has_history_`, similarly to how `current_memory_usage_excluding_last_`
is handled.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6187
Test Plan:
```
make clean
COMPILE_WITH_TSAN=1 make db_test -j24
./db_test
```
Differential Revision: D19084059
Pulled By: ltamasi
fbshipit-source-id: 327a5af9700fb7102baea2cc8903c085f69543b9
Summary:
The filter bits builder collects all the hashes to add in memory before adding them (because the number of keys is not known until we've walked over all the keys). Existing code uses a std::vector for this, which can mean up to 2x than necessary space allocated (and not freed) and up to ~2x write amplification in memory. Using std::deque uses close to minimal space (for large filters, the only time it matters), no write amplification, frees memory while building, and no need for large contiguous memory area. The only cost is more calls to allocator, which does not appear to matter, at least in benchmark test.
For now, this change only applies to the new (format_version=5) Bloom filter implementation, to ease before-and-after comparison downstream.
Temporary memory use during build is about the only way the new Bloom filter could regress vs. the old (because of upgrade to 64-bit hash) and that should only matter for full filters. This change should largely mitigate that potential regression.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6175
Test Plan:
Using filter_bench with -new_builder option and 6M keys per filter is like large full filter (improvement). 10k keys and no -new_builder is like partitioned filters (about the same). (Corresponding configurations run simultaneously on devserver.)
std::vector impl (before)
$ /usr/bin/time -v ./filter_bench -impl=2 -quick -new_builder -working_mem_size_mb=1000 -
average_keys_per_filter=6000000
Build avg ns/key: 52.2027
Maximum resident set size (kbytes): 1105016
$ /usr/bin/time -v ./filter_bench -impl=2 -quick -working_mem_size_mb=1000 -
average_keys_per_filter=10000
Build avg ns/key: 30.5694
Maximum resident set size (kbytes): 1208152
std::deque impl (after)
$ /usr/bin/time -v ./filter_bench -impl=2 -quick -new_builder -working_mem_size_mb=1000 -
average_keys_per_filter=6000000
Build avg ns/key: 39.0697
Maximum resident set size (kbytes): 1087196
$ /usr/bin/time -v ./filter_bench -impl=2 -quick -working_mem_size_mb=1000 -
average_keys_per_filter=10000
Build avg ns/key: 30.9348
Maximum resident set size (kbytes): 1207980
Differential Revision: D19053431
Pulled By: pdillinger
fbshipit-source-id: 2888e748723a19d9ea40403934f13cbb8483430c
Summary:
Current implementation holds on to 10% of snapshots for 10x longer, and 1% of snapshots 100x longer.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6171
Test Plan:
```
make -j32 crash_test
Differential Revision: D19038399
Pulled By: maysamyabandeh
fbshipit-source-id: 75da2dbb5c47a0b3f37d299b8719e392b73b42c0
Summary:
We have observed an increase in CPU load caused by frequent calls to
`ColumnFamilyData::InstallSuperVersion` from `DBImpl::TrimMemtableHistory`
when using `max_write_buffer_size_to_maintain` to limit the amount of
memtable history maintained for transaction conflict checking. Part of the issue
is that trimming can potentially be scheduled even if there is no memtable
history. The patch adds a check that fixes this.
See also https://github.com/facebook/rocksdb/pull/6169.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6177
Test Plan:
Compared `perf` output for
```
./db_bench -benchmarks=randomtransaction -optimistic_transaction_db=1 -statistics -stats_interval_seconds=1 -duration=90 -num=500000 --max_write_buffer_size_to_maintain=16000000 --transaction_set_snapshot=1 --threads=32
```
before and after the change. There is a significant reduction for the call chain
`rocksdb::DBImpl::TrimMemtableHistory` -> `rocksdb::ColumnFamilyData::InstallSuperVersion` ->
`rocksdb::ThreadLocalPtr::StaticMeta::Scrape` even without https://github.com/facebook/rocksdb/pull/6169.
Differential Revision: D19057445
Pulled By: ltamasi
fbshipit-source-id: dff81882d7b280e17eda7d9b072a2d4882c50f79
Summary:
Close asserts that there is no unreleased snapshots. For WritePrepared transaction, this means that the background work that holds on a snapshot must be canceled first. Update the stress tests to respect the sequence.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6174
Test Plan:
```
make -j32 crash_test
Differential Revision: D19057322
Pulled By: maysamyabandeh
fbshipit-source-id: c9e9e24f779bbfb0ab72c2717e34576c01bc6362
Summary:
Periodic compactions ensure that even SSTs that do not get picked up
otherwise eventually go through compaction; used in conjunction with
BlobDB's garbage collection, they enable BlobDB to reclaim space when
old blob files are used by such straggling SSTs.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6172
Test Plan: Ran `make check` and used the BlobDB mode of `db_bench`.
Differential Revision: D19045045
Pulled By: ltamasi
fbshipit-source-id: 04636ecc4b6cfe8d495bf656faa65d54a5eb1a93
Summary:
The current Env API encompasses both storage/file operations, as well as OS related operations. Most of the APIs return a Status, which does not have enough metadata about an error, such as whether its retry-able or not, scope (i.e fault domain) of the error etc., that may be required in order to properly handle a storage error. The file APIs also do not provide enough control over the IO SLA, such as timeout, prioritization, hinting about placement and redundancy etc.
This PR separates out the file/storage APIs from Env into a new FileSystem class. The APIs are updated to return an IOStatus with metadata about the error, as well as to take an IOOptions structure as input in order to allow more control over the IO.
The user can set both ```options.env``` and ```options.file_system``` to specify that RocksDB should use the former for OS related operations and the latter for storage operations. Internally, a ```CompositeEnvWrapper``` has been introduced that inherits from ```Env``` and redirects individual methods to either an ```Env``` implementation or the ```FileSystem``` as appropriate. When options are sanitized during ```DB::Open```, ```options.env``` is replaced with a newly allocated ```CompositeEnvWrapper``` instance if both env and file_system have been specified. This way, the rest of the RocksDB code can continue to function as before.
This PR also ports PosixEnv to the new API by splitting it into two - PosixEnv and PosixFileSystem. PosixEnv is defined as a sub-class of CompositeEnvWrapper, and threading/time functions are overridden with Posix specific implementations in order to avoid an extra level of indirection.
The ```CompositeEnvWrapper``` translates ```IOStatus``` return code to ```Status```, and sets the severity to ```kSoftError``` if the io_status is retryable. The error handling code in RocksDB can then recover the DB automatically.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5761
Differential Revision: D18868376
Pulled By: anand1976
fbshipit-source-id: 39efe18a162ea746fabac6360ff529baba48486f
Summary:
And clean up related code, especially in stress test.
(More clean up of db_stress_test_base.cc coming after this.)
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6154
Test Plan: make check, make blackbox_crash_test for a bit
Differential Revision: D18938180
Pulled By: pdillinger
fbshipit-source-id: 524d27621b8dbb25f6dff40f1081e7c00630357e
Summary:
We have observed an increase in CPU load caused by frequent calls to
`ColumnFamilyData::InstallSuperVersion` from `DBImpl::TrimMemtableHistory`
when using `max_write_buffer_size_to_maintain` to limit the amount of
memtable history maintained for transaction conflict checking. As it turns out,
this is caused by the code creating and installing a new `SuperVersion` even if
no memtables were actually trimmed. The patch adds a check to avoid this.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6169
Test Plan:
Compared `perf` output for
```
./db_bench -benchmarks=randomtransaction -optimistic_transaction_db=1 -statistics -stats_interval_seconds=1 -duration=90 -num=500000 --max_write_buffer_size_to_maintain=16000000 --transaction_set_snapshot=1 --threads=32
```
before and after the change. With the fix, the call chain `rocksdb::DBImpl::TrimMemtableHistory` ->
`rocksdb::ColumnFamilyData::InstallSuperVersion` -> `rocksdb::ThreadLocalPtr::StaticMeta::Scrape`
no longer registers in the `perf` report.
Differential Revision: D19031509
Pulled By: ltamasi
fbshipit-source-id: 02686fce594e5b50eba0710e4b28a9b808c8aa20
Summary:
With WritePrepared transactions configured with two_write_queues, unordered_write will offer the same guarantees as vanilla rocksdb and thus can be enabled in stress tests.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6164
Test Plan:
```
make -j32 crash_test_with_txn
Differential Revision: D18991899
Pulled By: maysamyabandeh
fbshipit-source-id: eece5e96b4169b67d7931e5c0afca88540a113e1
Summary:
The patch adds logic that relocates live blobs from the oldest N non-TTL
blob files as they are encountered during compaction (assuming the BlobDB
configuration option `enable_garbage_collection` is `true`), where N is defined
as the number of immutable non-TTL blob files multiplied by the value of
a new BlobDB configuration option called `garbage_collection_cutoff`.
(The default value of this parameter is 0.25, that is, by default the valid blobs
residing in the oldest 25% of immutable non-TTL blob files are relocated.)
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6121
Test Plan: Added unit test and tested using the BlobDB mode of `db_bench`.
Differential Revision: D18785357
Pulled By: ltamasi
fbshipit-source-id: 8c21c512a18fba777ec28765c88682bb1a5e694e
Summary:
It's easy to cause coredump when closing ColumnFamilyHandle with unreleased iterators, especially iterators release is controlled by java GC when using JNI.
This patch fixed concurrent CF iteration and drop, we let iterators(actually SuperVersion) hold a ColumnFamilyData reference to prevent the CF from being released too early.
fixed https://github.com/facebook/rocksdb/issues/5982
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6147
Differential Revision: D18926378
fbshipit-source-id: 1dff6d068c603d012b81446812368bfee95a5e15
Summary:
Read keys from a snapshot that a range deletion were added after the snapshot was created and this range deletion was inside an immutable memtable, we will get wrong key set.
More detail rest in codes.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6062
Differential Revision: D18966785
Pulled By: pdillinger
fbshipit-source-id: 38a60bb1e2d0a1dbfc8ec641617200b6a02b86c3
Summary:
**Summary:**
This PR fixes two unordered_write related issues:
- ingestion job may skip the necessary memtable flush https://github.com/facebook/rocksdb/issues/6026
- compact range may cause memtable is flushed before pending unordered write finished
1. `CompactRange` triggers memtable flush but doesn't wait for pending-writes
2. there are some pending writes but memtable is already flushed
3. the memtable related WAL is removed( note that the pending-writes were recorded in that WAL).
4. pending-writes write to newer created memtable
5. there is a restart
6. missing the previous pending-writes because WAL is removed but they aren't included in SST.
**How to solve:**
- Wait pending memtable writes before ingestion job check memtable key range
- Wait pending memtable writes before flush memtable.
**Note that: `CompactRange` calls `RangesOverlapWithMemtables` too without waiting for pending waits, but I'm not sure whether it affects the correctness.**
**Test Plan:**
make check
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6113
Differential Revision: D18895674
Pulled By: maysamyabandeh
fbshipit-source-id: da22b4476fc7e06c176020e7cc171eb78189ecaf
Summary:
While the instruction of installing "make format" dependencies works on some platforms, it is hard to use for some others. Improve it a little bit.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6162
Test Plan: Run "make format" on an envrionment missing the dependencies and see the instructions printed out
Differential Revision: D18970773
fbshipit-source-id: fd21b31053407cc171a6675f781a556a1c3e8945
Summary:
This change fixes a source issue that caused compile time error which breaks build for many fbcode services in that setup. The size() member function of channel is a const member, so member variables accessed within it are implicitly const as well. This caused error when clang fails to resolve to a constructor that takes std::mutex because the suitable constructor got rejected due to loss of constness for its argument. The fix is to add mutable modifier to the lock_ member of channel.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6161
Differential Revision: D18967685
Pulled By: maysamyabandeh
fbshipit-source-id: 698b6a5153c3c92eeacb842c467aa28cc350d432
Summary:
Currently the default txn write policy in crash tests is WRITE_PREPARED. The patch randomly picks the write policy at the start of the crash test.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6158
Test Plan:
```
make -j32 crash_test_with_txn
```
Differential Revision: D18946307
Pulled By: maysamyabandeh
fbshipit-source-id: f77d7a94f99a08791ef9626da153d284bf521950
2019-12-12 10:43:49 -08:00
1116 changed files with 56493 additions and 21548 deletions
* Fix consistency checking error swallowing in some cases when options.force_consistency_checks = true.
### Public API Change
* Flush(..., column_family) may return Status::ColumnFamilyDropped() instead of Status::InvalidArgument() if column_family is dropped while processing the flush request.
* BlobDB now explicitly disallows using the default column family's storage directories as blob directory.
* DeleteRange now returns `Status::InvalidArgument` if the range's end key comes before its start key according to the user comparator. Previously the behavior was undefined.
## 6.10 (5/2/2020)
### Bug Fixes
* Fix wrong result being read from ingested file. May happen when a key in the file happen to be prefix of another key also in the file. The issue can further cause more data corruption. The issue exists with rocksdb >= 5.0.0 since DB::IngestExternalFile() was introduced.
* Finish implementation of BlockBasedTableOptions::IndexType::kBinarySearchWithFirstKey. It's now ready for use. Significantly reduces read amplification in some setups, especially for iterator seeks.
* Fix a bug by updating CURRENT file so that it points to the correct MANIFEST file after best-efforts recovery.
* Fixed a bug where ColumnFamilyHandle objects were not cleaned up in case an error happened during BlobDB's open after the base DB had been opened.
* Fix a potential undefined behavior caused by trying to dereference nullable pointer (timestamp argument) in DB::MultiGet.
* Fix a bug caused by not including user timestamp in MultiGet LookupKey construction. This can lead to wrong query result since the trailing bytes of a user key, if not shorter than timestamp, will be mistaken for user timestamp.
* Fix a bug caused by using wrong compare function when sorting the input keys of MultiGet with timestamps.
* Upgraded version of bzip library (1.0.6 -> 1.0.8) used with RocksJava to address potential vulnerabilities if an attacker can manipulate compressed data saved and loaded by RocksDB (not normal). See issue #6703.
### Public API Change
* Add a ConfigOptions argument to the APIs dealing with converting options to and from strings and files. The ConfigOptions is meant to replace some of the options (such as input_strings_escaped and ignore_unknown_options) and allow for more parameters to be passed in the future without changing the function signature.
* Add NewFileChecksumGenCrc32cFactory to the file checksum public API, such that the builtin Crc32c based file checksum generator factory can be used by applications.
* Add IsDirectory to Env and FS to indicate if a path is a directory.
### New Features
* Added support for pipelined & parallel compression optimization for `BlockBasedTableBuilder`. This optimization makes block building, block compression and block appending a pipeline, and uses multiple threads to accelerate block compression. Users can set `CompressionOptions::parallel_threads` greater than 1 to enable compression parallelism. This feature is experimental for now.
* Provide an allocator for memkind to be used with block cache. This is to work with memory technologies (Intel DCPMM is one such technology currently available) that require different libraries for allocation and management (such as PMDK and memkind). The high capacities available make it possible to provision large caches (up to several TBs in size) beyond what is achievable with DRAM.
* Option `max_background_flushes` can be set dynamically using DB::SetDBOptions().
* Added functionality in sst_dump tool to check the compressed file size for different compression levels and print the time spent on compressing files with each compression type. Added arguments `--compression_level_from` and `--compression_level_to` to report size of all compression levels and one compression_type must be specified with it so that it will report compressed sizes of one compression type with different levels.
* Added statistics for redundant insertions into block cache: rocksdb.block.cache.*add.redundant. (There is currently no coordination to ensure that only one thread loads a table block when many threads are trying to access that same table block.)
### Bug Fixes
* Fix a bug when making options.bottommost_compression, options.compression_opts and options.bottommost_compression_opts dynamically changeable: the modified values are not written to option files or returned back to users when being queried.
* Fix a bug where index key comparisons were unaccounted in `PerfContext::user_key_comparison_count` for lookups in files written with `format_version >= 3`.
* Fix many bloom.filter statistics not being updated in batch MultiGet.
### Performance Improvements
* Improve performance of batch MultiGet with partitioned filters, by sharing block cache lookups to applicable filter blocks.
* Reduced memory copies when fetching and uncompressing compressed blocks from sst files.
## 6.9.0 (03/29/2020)
### Behavior changes
* Since RocksDB 6.8, ttl-based FIFO compaction can drop a file whose oldest key becomes older than options.ttl while others have not. This fix reverts this and makes ttl-based FIFO compaction use the file's flush time as the criterion. This fix also requires that max_open_files = -1 and compaction_options_fifo.allow_compaction = false to function properly.
### Public API Change
* Fix spelling so that API now has correctly spelled transaction state name `COMMITTED`, while the old misspelled `COMMITED` is still available as an alias.
* Updated default format_version in BlockBasedTableOptions from 2 to 4. SST files generated with the new default can be read by RocksDB versions 5.16 and newer, and use more efficient encoding of keys in index blocks.
* A new parameter `CreateBackupOptions` is added to both `BackupEngine::CreateNewBackup` and `BackupEngine::CreateNewBackupWithMetadata`, you can decrease CPU priority of `BackupEngine`'s background threads by setting `decrease_background_thread_cpu_priority` and `background_thread_cpu_priority` in `CreateBackupOptions`.
* Updated the public API of SST file checksum. Introduce the FileChecksumGenFactory to create the FileChecksumGenerator for each SST file, such that the FileChecksumGenerator is not shared and it can be more general for checksum implementations. Changed the FileChecksumGenerator interface from Value, Extend, and GetChecksum to Update, Finalize, and GetChecksum. Finalize should be only called once after all data is processed to generate the final checksum. Temproal data should be maintained by the FileChecksumGenerator object itself and finally it can return the checksum string.
### Bug Fixes
* Fix a bug where range tombstone blocks in ingested files were cached incorrectly during ingestion. If range tombstones were read from those incorrectly cached blocks, the keys they covered would be exposed.
* Fix a data race that might cause crash when calling DB::GetCreationTimeOfOldestFile() by a small chance. The bug was introduced in 6.6 Release.
* Fix a bug where a boolean value optimize_filters_for_hits was for max threads when calling load table handles after a flush or compaction. The value is correct to 1. The bug should not cause user visible problems.
* Fix a bug which might crash the service when write buffer manager fails to insert the dummy handle to the block cache.
### Performance Improvements
* In CompactRange, for levels starting from 0, if the level does not have any file with any key falling in the specified range, the level is skipped. So instead of always compacting from level 0, the compaction starts from the first level with keys in the specified range until the last such level.
* Reduced memory copy when reading sst footer and blobdb in direct IO mode.
* When restarting a database with large numbers of sst files, large amount of CPU time is spent on getting logical block size of the sst files, which slows down the starting progress, this inefficiency is optimized away with an internal cache for the logical block sizes.
### New Features
* Basic support for user timestamp in iterator. Seek/SeekToFirst/Next and lower/upper bounds are supported. Reverse iteration is not supported. Merge is not considered.
* When file lock failure when the lock is held by the current process, return acquiring time and thread ID in the error message.
* Added a new option, best_efforts_recovery (default: false), to allow database to open in a db dir with missing table files. During best efforts recovery, missing table files are ignored, and database recovers to the most recent state without missing table file. Cross-column-family consistency is not guaranteed even if WAL is enabled.
* options.bottommost_compression, options.compression_opts and options.bottommost_compression_opts are now dynamically changeable.
## 6.8.0 (02/24/2020)
### Java API Changes
* Major breaking changes to Java comparators, toward standardizing on ByteBuffer for performant, locale-neutral operations on keys (#6252).
* Added overloads of common API methods using direct ByteBuffers for keys and values (#2283).
### Bug Fixes
* Fix incorrect results while block-based table uses kHashSearch, together with Prev()/SeekForPrev().
* Fix a bug that prevents opening a DB after two consecutive crash with TransactionDB, where the first crash recovers from a corrupted WAL with kPointInTimeRecovery but the second cannot.
* Fixed issue #6316 that can cause a corruption of the MANIFEST file in the middle when writing to it fails due to no disk space.
* Add DBOptions::skip_checking_sst_file_sizes_on_db_open. It disables potentially expensive checking of all sst file sizes in DB::Open().
* BlobDB now ignores trivially moved files when updating the mapping between blob files and SSTs. This should mitigate issue #6338 where out of order flush/compaction notifications could trigger an assertion with the earlier code.
* Batched MultiGet() ignores IO errors while reading data blocks, causing it to potentially continue looking for a key and returning stale results.
*`WriteBatchWithIndex::DeleteRange` returns `Status::NotSupported`. Previously it returned success even though reads on the batch did not account for range tombstones. The corresponding language bindings now cannot be used. In C, that includes `rocksdb_writebatch_wi_delete_range`, `rocksdb_writebatch_wi_delete_range_cf`, `rocksdb_writebatch_wi_delete_rangev`, and `rocksdb_writebatch_wi_delete_rangev_cf`. In Java, that includes `WriteBatchWithIndex::deleteRange`.
* Assign new MANIFEST file number when caller tries to create a new MANIFEST by calling LogAndApply(..., new_descriptor_log=true). This bug can cause MANIFEST being overwritten during recovery if options.write_dbid_to_manifest = true and there are WAL file(s).
### Performance Improvements
* Perfom readahead when reading from option files. Inside DB, options.log_readahead_size will be used as the readahead size. In other cases, a default 512KB is used.
### Public API Change
* The BlobDB garbage collector now emits the statistics `BLOB_DB_GC_NUM_FILES` (number of blob files obsoleted during GC), `BLOB_DB_GC_NUM_NEW_FILES` (number of new blob files generated during GC), `BLOB_DB_GC_FAILURES` (number of failed GC passes), `BLOB_DB_GC_NUM_KEYS_RELOCATED` (number of blobs relocated during GC), and `BLOB_DB_GC_BYTES_RELOCATED` (total size of blobs relocated during GC). On the other hand, the following statistics, which are not relevant for the new GC implementation, are now deprecated: `BLOB_DB_GC_NUM_KEYS_OVERWRITTEN`, `BLOB_DB_GC_NUM_KEYS_EXPIRED`, `BLOB_DB_GC_BYTES_OVERWRITTEN`, `BLOB_DB_GC_BYTES_EXPIRED`, and `BLOB_DB_GC_MICROS`.
* Disable recycle_log_file_num when an inconsistent recovery modes are requested: kPointInTimeRecovery and kAbsoluteConsistency
### New Features
* Added the checksum for each SST file generated by Flush or Compaction. Added sst_file_checksum_func to Options such that user can plugin their own SST file checksum function via override the FileChecksumFunc class. If user does not set the sst_file_checksum_func, SST file checksum calculation will not be enabled. The checksum information inlcuding uint32_t checksum value and a checksum function name (string). The checksum information is stored in FileMetadata in version store and also logged to MANIFEST. A new tool is added to LDB such that user can dump out a list of file checksum information from MANIFEST (stored in an unordered_map).
*`db_bench` now supports `value_size_distribution_type`, `value_size_min`, `value_size_max` options for generating random variable sized value. Added `blob_db_compression_type` option for BlobDB to enable blob compression.
* Replace RocksDB namespace "rocksdb" with flag "ROCKSDB_NAMESPACE" which if is not defined, defined as "rocksdb" in header file rocksdb_namespace.h.
## 6.7.0 (01/21/2020)
### Public API Change
* Added a rocksdb::FileSystem class in include/rocksdb/file_system.h to encapsulate file creation/read/write operations, and an option DBOptions::file_system to allow a user to pass in an instance of rocksdb::FileSystem. If its a non-null value, this will take precendence over DBOptions::env for file operations. A new API rocksdb::FileSystem::Default() returns a platform default object. The DBOptions::env option and Env::Default() API will continue to be used for threading and other OS related functions, and where DBOptions::file_system is not specified, for file operations. For storage developers who are accustomed to rocksdb::Env, the interface in rocksdb::FileSystem is new and will probably undergo some changes as more storage systems are ported to it from rocksdb::Env. As of now, no env other than Posix has been ported to the new interface.
* A new rocksdb::NewSstFileManager() API that allows the caller to pass in separate Env and FileSystem objects.
* Changed Java API for RocksDB.keyMayExist functions to use Holder<byte[]> instead of StringBuilder, so that retrieved values need not decode to Strings.
* A new `OptimisticTransactionDBOptions` Option that allows users to configure occ validation policy. The default policy changes from kValidateSerial to kValidateParallel to reduce mutex contention.
### Bug Fixes
* Fix a bug that can cause unnecessary bg thread to be scheduled(#6104).
* Fix crash caused by concurrent CF iterations and drops(#6147).
* Fix a race condition for cfd->log_number_ between manifest switch and memtable switch (PR 6249) when number of column families is greater than 1.
* Fix a bug on fractional cascading index when multiple files at the same level contain the same smallest user key, and those user keys are for merge operands. In this case, Get() the exact key may miss some merge operands.
* Delcare kHashSearch index type feature-incompatible with index_block_restart_interval larger than 1.
* Fixed an issue where the thread pools were not resized upon setting `max_background_jobs` dynamically through the `SetDBOptions` interface.
* Fix a bug that can cause write threads to hang when a slowdown/stall happens and there is a mix of writers with WriteOptions::no_slowdown set/unset.
* Fixed an issue where an incorrect "number of input records" value was used to compute the "records dropped" statistics for compactions.
* Fix a regression bug that causes segfault when hash is used, max_open_files != -1 and total order seek is used and switched back.
### New Features
* It is now possible to enable periodic compactions for the base DB when using BlobDB.
* BlobDB now garbage collects non-TTL blobs when `enable_garbage_collection` is set to `true` in `BlobDBOptions`. Garbage collection is performed during compaction: any valid blobs located in the oldest N files (where N is the number of non-TTL blob files multiplied by the value of `BlobDBOptions::garbage_collection_cutoff`) encountered during compaction get relocated to new blob files, and old blob files are dropped once they are no longer needed. Note: we recommend enabling periodic compactions for the base DB when using this feature to deal with the case when some old blob files are kept alive by SSTs that otherwise do not get picked for compaction.
*`db_bench` now supports the `garbage_collection_cutoff` option for BlobDB.
* Introduce ReadOptions.auto_prefix_mode. When set to true, iterator will return the same result as total order seek, but may choose to use prefix seek internally based on seek key and iterator upper bound.
* MultiGet() can use IO Uring to parallelize read from the same SST file. This featuer is by default disabled. It can be enabled with environment variable ROCKSDB_USE_IO_URING.
## 6.6.2 (01/13/2020)
### Bug Fixes
* Fixed a bug where non-L0 compaction input files were not considered to compute the `creation_time` of new compaction outputs.
## 6.6.1 (01/02/2020)
### Bug Fixes
* Fix a bug in WriteBatchWithIndex::MultiGetFromBatchAndDB, which is called by Transaction::MultiGet, that causes due to stale pointer access when the number of keys is > 32
* Fixed two performance issues related to memtable history trimming. First, a new SuperVersion is now created only if some memtables were actually trimmed. Second, trimming is only scheduled if there is at least one flushed memtable that is kept in memory for the purposes of transaction conflict checking.
* BlobDB no longer updates the SST to blob file mapping upon failed compactions.
* Fix a bug in which a snapshot read through an iterator could be affected by a DeleteRange after the snapshot (#6062).
* Fixed a bug where BlobDB was comparing the `ColumnFamilyHandle` pointers themselves instead of only the column family IDs when checking whether an API call uses the default column family or not.
* Delete superversions in BackgroundCallPurge.
* Fix use-after-free and double-deleting files in BackgroundCallPurge().
## 6.6.0 (11/25/2019)
### Bug Fixes
* Fix data corruption caused by output of intra-L0 compaction on ingested file not being placed in correct order in L0.
@@ -102,3 +102,10 @@ LzLabs is using RocksDB as a storage engine in their multi-database distributed
## Crux
[Crux](https://github.com/juxt/crux) is a document database that uses RocksDB for local [EAV](https://en.wikipedia.org/wiki/Entity%E2%80%93attribute%E2%80%93value_model) index storage to enable point-in-time bitemporal Datalog queries. The "unbundled" architecture uses Kafka to provide horizontal scalability.
## Nebula Graph
[Nebula Graph](https://github.com/vesoft-inc/nebula) is a distributed, scalable, lightning-fast, open source graph database capable of hosting super large scale graphs with dozens of billions of vertices (nodes) and trillions of edges, with milliseconds of latency.
## YugabyteDB
[YugabyteDB](https://www.yugabyte.com/) is an open source, high performance, distributed SQL database that uses RocksDB as its storage layer. For more information, please see https://github.com/yugabyte/yugabyte-db/.
@@ -1827,4 +1866,4 @@ Status DB::Merge(const WriteOptions& opt, ColumnFamilyHandle* column_family,
}
returnWrite(opt,&batch);
}
}// namespace rocksdb
}// namespace ROCKSDB_NAMESPACE
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