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Fix error with CREATE PUBLICATION, wal_level=minimal, and new tables.

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CREATE PUBLICATION has failed spuriously when applied to a permanent
relation created or rewritten in the current transaction.  Make the same
change to another site having the same semantic intent; the second
instance has no user-visible consequences.  Back-patch to v13, where
commit c6b92041d3 broke this.

Kyotaro Horiguchi

Discussion: https://postgr.es/m/20210113.160705.2225256954956139776.horikyota.ntt@gmail.com
This commit is contained in:
Noah Misch 2021-01-30 00:11:38 -08:00
parent 86a5b309c9
commit e8e3e67490
3 changed files with 22 additions and 3 deletions
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2
src/backend/catalog/pg_publication.c
View File

@ -67,7 +67,7 @@ check_publication_add_relation(Relation targetrel)
errdetail("System tables cannot be added to publications.")));
/* UNLOGGED and TEMP relations cannot be part of publication. */
if (!RelationNeedsWAL(targetrel))
if (targetrel->rd_rel->relpersistence != RELPERSISTENCE_PERMANENT)
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("table \"%s\" cannot be replicated",

3
src/backend/optimizer/util/plancat.c
View File

@ -126,7 +126,8 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
relation = table_open(relationObjectId, NoLock);
/* Temporary and unlogged relations are inaccessible during recovery. */
if (!RelationNeedsWAL(relation) && RecoveryInProgress())
if (relation->rd_rel->relpersistence != RELPERSISTENCE_PERMANENT &&
RecoveryInProgress())
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("cannot access temporary or unlogged relations during recovery")));

20
src/test/subscription/t/001_rep_changes.pl
View File

@ -3,7 +3,7 @@ use strict;
use warnings;
use PostgresNode;
use TestLib;
use Test::More tests => 23;
use Test::More tests => 24;
# Initialize publisher node
my $node_publisher = get_new_node('publisher');
@ -358,3 +358,21 @@ is($result, qq(0), 'check replication origin was dropped on subscriber');
$node_subscriber->stop('fast');
$node_publisher->stop('fast');
# CREATE PUBLICATION while wal_level=minimal should succeed, with a WARNING
$node_publisher->append_conf(
'postgresql.conf', qq(
wal_level=minimal
max_wal_senders=0
));
$node_publisher->start;
($result, my $retout, my $reterr) = $node_publisher->psql(
'postgres', qq{
BEGIN;
CREATE TABLE skip_wal();
CREATE PUBLICATION tap_pub2 FOR TABLE skip_wal;
ROLLBACK;
});
ok( $reterr =~
m/WARNING: wal_level is insufficient to publish logical changes/,
'CREATE PUBLICATION while wal_level=minimal');