Movatterモバイル変換

[0]ホーム
URL:

Skip to content

Navigation Menu

Sign in
Appearance settings

Search code, repositories, users, issues, pull requests...

Provide feedback

We read every piece of feedback, and take your input very seriously.

Saved searches

Use saved searches to filter your results more quickly

 Sign up
Appearance settings

Commitec01c1c

Browse files
committed
Fix autovacuum launcher shutdown sequence
It was previously possible to have the launcher re-execute its main loopbefore shutting down if some other signal was received or an erroroccurred after getting SIGTERM, as reported by Qingqing Zhou.While investigating, Tom Lane further noticed that if autovacuum hadbeen disabled in the config file, it would misbehave by trying to starta new worker instead of bailing out immediately -- it would consideritself as invoked in emergency mode.Fix both problems by checking the shutdown flag in a few more places.These problems have existed since autovacuum was introduced, sobackpatch all the way back.
1 parentf97a0a2 commitec01c1c

File tree

1 file changed

+13
-3
lines changed

1 file changed

+13
-3
lines changed

‎src/backend/postmaster/autovacuum.c

Lines changed: 13 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -533,6 +533,10 @@ AutoVacLauncherMain(int argc, char *argv[])
533533
/* Now we can allow interrupts again */
534534
RESUME_INTERRUPTS();
535535

536+
/* if in shutdown mode, no need for anything further; just go away */
537+
if (got_SIGTERM)
538+
gotoshutdown;
539+
536540
/*
537541
* Sleep at least 1 second after any error. We don't want to be
538542
* filling the error logs as fast as we can.
@@ -568,10 +572,14 @@ AutoVacLauncherMain(int argc, char *argv[])
568572
SetConfigOption("default_transaction_isolation","read committed",
569573
PGC_SUSET,PGC_S_OVERRIDE);
570574

571-
/* in emergency mode, just start a worker and go away */
575+
/*
576+
* In emergency mode, just start a worker (unless shutdown was requested)
577+
* and go away.
578+
*/
572579
if (!AutoVacuumingActive())
573580
{
574-
do_start_worker();
581+
if (!got_SIGTERM)
582+
do_start_worker();
575583
proc_exit(0);/* done */
576584
}
577585

@@ -586,7 +594,8 @@ AutoVacLauncherMain(int argc, char *argv[])
586594
*/
587595
rebuild_database_list(InvalidOid);
588596

589-
for (;;)
597+
/* loop until shutdown request */
598+
while (!got_SIGTERM)
590599
{
591600
structtimevalnap;
592601
TimestampTzcurrent_time=0;
@@ -786,6 +795,7 @@ AutoVacLauncherMain(int argc, char *argv[])
786795
}
787796

788797
/* Normal exit from the autovac launcher is here */
798+
shutdown:
789799
ereport(LOG,
790800
(errmsg("autovacuum launcher shutting down")));
791801
AutoVacuumShmem->av_launcherpid=0;

0 commit comments

Comments
 (0)
[8]ページ先頭
©2009-2025 Movatter.jp