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Disable synchronize_seqscans in 027_stream_regress.pl.

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This script runs the core regression tests with quite a small value of
shared_buffers, making it prone to breakage due to synchronize_seqscans
kicking in where the tests don't expect that.  Disable that feature to
stabilize the tests.

Discussion: https://postgr.es/m/1258185.1648876239@sss.pgh.pa.us
This commit is contained in:
Tom Lane
2022-04-04 12:38:51 -04:00
parent 4eb9798879
commit cbf4177f2c
1 changed files with 6 additions and 0 deletions
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6
src/test/recovery/t/027_stream_regress.pl
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@@ -16,8 +16,14 @@ if (PostgreSQL::Test::Utils::has_wal_read_bug)
# Initialize primary node
my $node_primary = PostgreSQL::Test::Cluster->new('primary');
$node_primary->init(allows_streaming => 1);
# Increase some settings that Cluster->new makes too low by default.
$node_primary->adjust_conf('postgresql.conf', 'max_connections', '25');
$node_primary->append_conf('postgresql.conf', 'max_prepared_transactions = 10');
# We'll stick with Cluster->new's small default shared_buffers, but since that
# makes synchronized seqscans more probable, it risks changing the results of
# some test queries. Disable synchronized seqscans to prevent that.
$node_primary->append_conf('postgresql.conf', 'synchronize_seqscans = off');
# WAL consistency checking is resource intensive so require opt-in with the
# PG_TEST_EXTRA environment variable.