Horton

releasing ParallelApplyTxnHash when pa_launch_parallel_worker returns NULL

Ted Yu <yuzhihong@gmail.com>

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From: Ted Yu <yuzhihong@gmail.com>
To: akapila@postgresql.org, Postgres hackers <pgsql-hackers@lists.postgresql.org>
Date: 2023-01-10T17:25:29Z
Lists: pgsql-hackers 
Hi,
I was reading src/backend/replication/logical/applyparallelworker.c .
In `pa_allocate_worker`, when pa_launch_parallel_worker returns NULL, I
think the `ParallelApplyTxnHash` should be released.

Please see the patch.

Thanks

Commits

  1. Avoid creating parallel apply state hash table unless required.