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Clean up properly error_context_stack in autovacuum worker on exception

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Any callback set would have no meaning in the context of an exception.
As an autovacuum worker exits quickly in this context, this could be
only an issue within EmitErrorReport(), where the elog hook is for
example called.  That's unlikely to going to be a problem, but let's be
clean and consistent with other code paths handling exceptions.  This is
present since 2909419, which introduced autovacuum.

Author: Ashwin Agrawal
Reviewed-by: Tom Lane, Michael Paquier
Discussion: https://postgr.es/m/CALfoeisM+_+dgmAdAOHAu0k-ZpEHHqSSG=GRf3pKJGm8OqWX0w@mail.gmail.com
Backpatch-through: 9.4
This commit is contained in:
Michael Paquier 2019-10-23 10:25:06 +09:00
parent ad4b7aeb84
commit e3db3f829f
1 changed files with 3 additions and 0 deletions
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3
src/backend/postmaster/autovacuum.c
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@ -1558,6 +1558,9 @@ AutoVacWorkerMain(int argc, char *argv[])
*/
if (sigsetjmp(local_sigjmp_buf, 1) != 0)
{
/* since not using PG_TRY, must reset error stack by hand */
error_context_stack = NULL;
/* Prevents interrupts while cleaning up */
HOLD_INTERRUPTS();