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Vinod Sridharan
2108af32e6
### Does this PR have any customer impact? Yes ### Type (Feature, Refactoring, Bugfix, DevOps, Testing, Perf, etc) Feature ### Does it involve schema level changes? (Table, Column, Index, UDF, etc level changes) Yes ### Are you introducing any new config? If yes, do you have tests with and without them being set? No ### ChangeLog (Refer [Template](../oss/CHANGELOG.md)) ### Description Add support for hidden indexes with distributed tables. - Add function that supports per node distribution with shards: Select all shards for the table and pick one shard per node. - Add a planner worker function that executes on every shard - On the shard skip execution if it's not the selected shard - Run the local function on the worker function. - Plumb in hooks to execute the index functions remotely. ---- #### AI description (iteration 1) #### PR Classification This pull request implements a new feature to support hidden indexes in a distributed environment. #### PR Summary The changes integrate hidden index support into distributed index update operations by introducing new per-node functions, updating API hooks, and modifying planner and UDF logic for proper shard routing and logging. - **`node_distribution_operations.c`**: New file that adds functions (e.g., `UpdateDistributedPostgresIndex` and its worker) to execute index update commands per node in a distributed setting. - **`diagnostic_commands_common.c`**: Introduces `command_node_worker` to ensure that update commands target the appropriate shard based on table identity. - **`coll_mod.c` and `coll_mod.h`**: Updated to use `UpdatePostgresIndexWithOverride` and correctly incorporate hidden index modifications with distributed operations. - **API hooks and metadata files** (e.g., `api_hooks.c`, `api_hooks_def.h`, `api_hooks.h`, and `metadata_cache.c`): Enhanced to support new function pointers and caching mechanisms for hidden index updates via the new command worker. - **SQL UDF scripts**: New UDF definitions for `command_node_worker` and `update_postgres_index_worker` enable proper registration and execution of hidden index operations in the distributed framework. <!-- GitOpsUserAgent=GitOps.Apps.Server.pullrequestcopilot --> Signed-off-by: Shuai Tian <shuaitian@microsoft.com>