Stabilize timeline switch regression test.

MasaoFujii · MasaoFujii · commit 424d7a9b277c · 2021-01-14T23:55:33.000+09:00
Commit fef5b47 added the regression test to check whether a standby is able to follow a primary on a newer timeline when WAL archiving is enabled. But the buildfarm member florican reported that this test failed because the requested WAL segment was removed and replication failed. This is a timing issue. Since neither replication slot is used nor wal_keep_size is set in the test, checkpoint could remove the WAL segment that's still necessary for replication. This commit stabilizes the test by setting wal_keep_size. Back-patch to v13 where the regression test that this commit stabilizes was added. Author: Fujii Masao Discussion: https://postgr.es/m/X//PsenxcC50jDzX@paquier.xyz
diff --git a/src/test/recovery/t/004_timeline_switch.pl b/src/test/recovery/t/004_timeline_switch.pl
@@ -75,6 +75,10 @@
 # Initialize primary node
 my $node_primary_2 = get_new_node('primary_2');
 $node_primary_2->init(allows_streaming => 1, has_archiving => 1);
+$node_primary_2->append_conf(
+	'postgresql.conf', qq(
+wal_keep_size = 512MB
+));
 $node_primary_2->start;
 
 # Take backup
