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Code Issues Releases Activity

Add a note regarding verifying checkpoint against replay position.

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This commit is contained in:
David Steele 2019-03-17 08:35:40 +04:00
parent 8ebc6d6c34
commit fc974626cd
1 changed files with 4 additions and 0 deletions
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lib/pgBackRest/Db.pm
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@ -999,6 +999,10 @@ sub replayWait
$self->executeSql('checkpoint', undef, false);
# On PostgreSQL >= 9.6 the checkpoint location can be verified
#
# ??? We have seen one instance where this check failed. Is there any chance that the replayed position could be ahead of the
# checkpoint recorded in pg_control? It seems possible, so in the C version of this add a loop to keep checking pg_control
# until the checkpoint has been recorded.
my $strCheckpointLSN = undef;
if ($self->{strDbVersion} >= PG_VERSION_96)