Horton

Re: generic plans and "initial" pruning

Amit Langote <amitlangote09@gmail.com>

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From: Amit Langote <amitlangote09@gmail.com>
To: Zhihong Yu <zyu@yugabyte.com>
Cc: David Rowley <dgrowleyml@gmail.com>, Robert Haas <robertmhaas@gmail.com>, Tom Lane <tgl@sss.pgh.pa.us>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2022-05-27T08:09:46Z
Lists: pgsql-hackers

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On Mon, Apr 11, 2022 at 12:53 PM Zhihong Yu <zyu@yugabyte.com> wrote:
> On Sun, Apr 10, 2022 at 8:05 PM Amit Langote <amitlangote09@gmail.com> wrote:
>> Sending v15 that fixes that to keep the cfbot green for now.
>
> Hi,
>
> +               /* RT index of the partitione table. */
>
> partitione -> partitioned

Thanks, fixed.

Also, I broke this into patches:

0001 contains the mechanical changes of moving PartitionPruneInfo out
of Append/MergeAppend into a list in PlannedStmt.

0002 is the main patch to "Optimize AcquireExecutorLocks() by locking
only unpruned partitions".

-- 
Thanks, Amit Langote
EDB: http://www.enterprisedb.com

Commits

  1. Stamp 19beta1.

  2. Revert "Don't lock partitions pruned by initial pruning"

  3. Ensure first ModifyTable rel initialized if all are pruned

  4. Fix bug in cbc127917 to handle nested Append correctly

  5. Remove unstable test suite added by 525392d57

  6. Don't lock partitions pruned by initial pruning

  7. Fix an oversight in cbc127917 to handle MERGE correctly

  8. Track unpruned relids to avoid processing pruned relations

  9. Perform runtime initial pruning outside ExecInitNode()

  10. Move PartitionPruneInfo out of plan nodes into PlannedStmt

  11. Fix setrefs.c's failure to do expression processing on prune steps.

  12. Remove obsolete executor cleanup code

  13. Revert "Move PartitionPruneInfo out of plan nodes into PlannedStmt"

  14. Move PartitioPruneInfo out of plan nodes into PlannedStmt

  15. Refactor and cleanup runtime partition prune code a little

  16. Remove some unnecessary fields from Plan trees.

  17. Remove more redundant relation locking during executor startup.

  18. Shut down Gather's children before shutting down Gather itself.