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Commit4a69624

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Cause the archiver process to adopt new postgresql.conf settings (particularly
archive_command) as soon as possible, namely just before issuing a new callof archive_command, even when there is a backlog of files to be archived.The original coding would only absorb new settings after clearing the backlogand returning to the outer loop. Per discussion.Back-patch to 8.3. The logic in prior versions is a bit different and itdoesn't seem worth taking any risks of breaking it.
1 parent8b8009a commit4a69624

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‎src/backend/postmaster/pgarch.c‎

Lines changed: 20 additions & 9 deletions
Original file line numberDiff line numberDiff line change
@@ -19,7 +19,7 @@
1919
*
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*
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* IDENTIFICATION
22-
* $PostgreSQL: pgsql/src/backend/postmaster/pgarch.c,v 1.41 2010/01/02 16:57:50 momjian Exp $
22+
* $PostgreSQL: pgsql/src/backend/postmaster/pgarch.c,v 1.42 2010/05/11 16:42:28 tgl Exp $
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*
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*-------------------------------------------------------------------------
2525
*/
@@ -410,14 +410,6 @@ pgarch_ArchiverCopyLoop(void)
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{
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charxlog[MAX_XFN_CHARS+1];
412412

413-
if (!XLogArchiveCommandSet())
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{
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ereport(WARNING,
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(errmsg("archive_mode enabled, yet archive_command is not set")));
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/* can't do anything if no command ... */
418-
return;
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}
420-
421413
/*
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* loop through all xlogs with archive_status of .ready and archive
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* them...mostly we expect this to be a single file, though it is possible
@@ -440,6 +432,25 @@ pgarch_ArchiverCopyLoop(void)
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if (got_SIGTERM|| !PostmasterIsAlive(true))
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return;
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435+
/*
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* Check for config update. This is so that we'll adopt a new
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* setting for archive_command as soon as possible, even if there
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* is a backlog of files to be archived.
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*/
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if (got_SIGHUP)
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{
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got_SIGHUP= false;
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ProcessConfigFile(PGC_SIGHUP);
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}
445+
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/* can't do anything if no command ... */
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if (!XLogArchiveCommandSet())
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{
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ereport(WARNING,
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(errmsg("archive_mode enabled, yet archive_command is not set")));
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return;
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}
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443454
if (pgarch_archiveXlog(xlog))
444455
{
445456
/* successful */

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