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Fix pause_at_recovery_target + recovery_target_inclusive combination. 

If pause_at_recovery_target is set, recovery pauses *before* applying the
target record, even if recovery_target_inclusive is set. If you then
continue with pg_xlog_replay_resume(), it will apply the target record
before ending recovery. In other words, if you log in while it's paused
and verify that the database looks OK, ending recovery changes its state
again, possibly destroying data that you were tring to salvage with PITR.

Backpatch to 9.1, this has been broken since pause_at_recovery_target was
added.
This commit is contained in:
Heikki Linnakangas 2014-01-08 23:06:03 +02:00
parent 815d71deed
commit 3739e5ab93
1 changed files with 6 additions and 5 deletions
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11
src/backend/access/transam/xlog.c
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@ -6794,11 +6794,6 @@ StartupXLOG(void)
*/
if (recoveryStopsHere(record, &recoveryApply, &recoveryDelay))
{
if (recoveryPauseAtTarget)
{
SetRecoveryPause(true);
recoveryPausesHere();
}
reachedStopPoint = true; /* see below */
recoveryContinue = false;
@ -6948,6 +6943,12 @@ StartupXLOG(void)
* end of main redo apply loop
*/
if (recoveryPauseAtTarget && reachedStopPoint)
{
SetRecoveryPause(true);
recoveryPausesHere();
}
ereport(LOG,
(errmsg("redo done at %X/%X",
(uint32) (ReadRecPtr >> 32), (uint32) ReadRecPtr)));