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Fix possible failure to send final transaction counts to stats collector.

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Normally, we suppress sending a tabstats message to the collector unless
there were some actual table stats to send.  However, during backend exit
we should force out the message if there are any transaction commit/abort
counts to send, else the session's last few commit/abort counts will never
get reported at all.  We had logic for this, but the short-circuit test
at the top of pgstat_report_stat() ignored the "force" flag, with the
consequence that session-ending transactions that touched no database-local
tables would not get counted.  Seems to be an oversight in my commit
641912b4d1, which added the "force" flag.
That was back in 8.3, so back-patch to all supported versions.
This commit is contained in:
Tom Lane 2013-02-07 14:44:24 -05:00
parent 2228ce6a11
commit 19c115cb9a
1 changed files with 2 additions and 2 deletions
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4
src/backend/postmaster/pgstat.c
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@ -675,8 +675,8 @@ pgstat_report_stat(bool force)
int i;
/* Don't expend a clock check if nothing to do */
if ((pgStatTabList == NULL || pgStatTabList->tsa_used == 0)
&& !have_function_stats)
if ((pgStatTabList == NULL || pgStatTabList->tsa_used == 0) &&
!have_function_stats && !force)
return;
/*