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Set pg_setting.pending_restart when pertinent config lines are removed

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This changes the behavior of examining the pg_file_settings view after
changing a config option that requires restart.  The user needs to know
that any change of such options does not take effect until a restart,
and this worked correctly if the line is edited without removing it.
However, for the case where the line is removed altogether, the flag
doesn't get set, because a flag was only set in set_config_option, but
that's not called for lines removed.  Repair.

(Ref.: commits 62d16c7fc561 and a486e35706ea)

Author: Álvaro Herrera <alvherre@alvh.no-ip.org>
Reviewed-by: Daniel Gustafsson <daniel@yesql.se>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/202107262302.xsfdfc5sb7sh@alvherre.pgsql
This commit is contained in:
Alvaro Herrera 2021-07-27 15:44:12 -04:00
parent 92913fc290
commit b8f91d7f92
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GPG Key ID: 1C20ACB9D5C564AE
1 changed files with 2 additions and 0 deletions
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2
src/backend/utils/misc/guc-file.l
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@ -347,6 +347,8 @@ ProcessConfigFileInternal(GucContext context, bool applySettings, int elevel)
continue;
if (gconf->context < PGC_SIGHUP)
{
/* The removal can't be effective without a restart */
gconf->status |= GUC_PENDING_RESTART;
ereport(elevel,
(errcode(ERRCODE_CANT_CHANGE_RUNTIME_PARAM),
errmsg("parameter \"%s\" cannot be changed without restarting the server",