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Improve stability of subscription/029_on_error.pl

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This test was failing when using wal_debug=on and -DWAL_DEBUG because of
additional log entries that made the test grab an LSN not mapping with
the error expected in the test.

Previously the test would look for the first matching line to get the
LSN to skip up to.  This is improved by having the test scan the logs
with a regexp that checks for the expected ERROR string, ensuring that
the wanted LSN comes from the correct context.

Backpatch down to 15 where this test has been introduced.

Author: Ian Ilyasov
Discussion: https://postgr.es/m/GV1P251MB100415F17E6B2FDD7188777ECDE32@GV1P251MB1004.EURP251.PROD.OUTLOOK.COM
Backpatch-through: 15
This commit is contained in:
Michael Paquier 2024-05-24 11:21:31 +09:00
parent e892e72b3c
commit 8e16f81f3d
1 changed files with 3 additions and 2 deletions
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5
src/test/subscription/t/029_on_error.pl
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@ -26,10 +26,11 @@ sub test_skip_lsn
"SELECT subenabled = FALSE FROM pg_subscription WHERE subname = 'sub'"
);
# Get the finish LSN of the error transaction.
# Get the finish LSN of the error transaction, mapping the expected
# ERROR with its CONTEXT when retrieving this information.
my $contents = slurp_file($node_subscriber->logfile, $offset);
$contents =~
qr/processing remote data for replication origin \"pg_\d+\" during message type "INSERT" for replication target relation "public.tbl" in transaction \d+, finished at ([[:xdigit:]]+\/[[:xdigit:]]+)/
qr/duplicate key value violates unique constraint "tbl_pkey".*\n.*DETAIL:.*\n.*CONTEXT:.* for replication target relation "public.tbl" in transaction \d+, finished at ([[:xdigit:]]+\/[[:xdigit:]]+)/m
or die "could not get error-LSN";
my $lsn = $1;