database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-11-24 00:23:06 +03:00
Code Activity

Add a test to verify that subscription to the standby works.

Browse Source 
Author: Bertrand Drouvot
Reviewed-by: Vignesh C, Alvaro Herrera, Amit Kapila
Discussion: https://postgr.es/m/2fefa454-5a70-2174-ddbf-4a0e41537139@gmail.com
This commit is contained in:
Amit Kapila
2023-04-27 14:22:53 +05:30
parent bedc1f0564
commit 376dc82053
2 changed files with 107 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
src/test/perl/PostgreSQL/Test/Cluster.pm
View File

@@ -2611,8 +2611,14 @@ When doing physical replication, the standby is usually identified by
passing its PostgreSQL::Test::Cluster instance. When doing logical
replication, standby_name identifies a subscription.
The default value of target_lsn is $node->lsn('write'), which ensures
that the standby has caught up to what has been committed on the primary.
When not in recovery, the default value of target_lsn is $node->lsn('write'),
which ensures that the standby has caught up to what has been committed on
the primary.
When in recovery, the default value of target_lsn is $node->lsn('replay')
instead which ensures that the cascaded standby has caught up to what has been
replayed on the standby.
If you pass an explicit value of target_lsn, it should almost always be
the primary's write LSN; so this parameter is seldom needed except when
querying some intermediate replication node rather than the primary.
@@ -2644,7 +2650,16 @@ sub wait_for_catchup
}
if (!defined($target_lsn))
{
$target_lsn = $self->lsn('write');
my $isrecovery = $self->safe_psql('postgres', "SELECT pg_is_in_recovery()");
chomp($isrecovery);
if ($isrecovery eq 't')
{
$target_lsn = $self->lsn('replay');
}
else
{
$target_lsn = $self->lsn('write');
}
}
print "Waiting for replication conn "
. $standby_name . "'s "