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Fix memory leak due to LogicalRepRelMapEntry.attrmap. 

When rebuilding the relation mapping on subscribers, we were not releasing
the attribute mapping's memory which was no longer required.

The attribute mapping used in logical tuple conversion was refactored in
PG13 (by commit e1551f96e6) but we forgot to update the related code that
frees the attribute map.

Author: Hou Zhijie
Reviewed-by: Amit Langote, Amit Kapila, Shi yu
Backpatch-through: 10, where it was introduced
Discussion: https://postgr.es/m/OSZPR01MB6310F46CD425A967E4AEF736FDA49@OSZPR01MB6310.jpnprd01.prod.outlook.com
This commit is contained in:
Amit Kapila 2022-06-23 08:47:15 +05:30
parent 5ad46aec87
commit 9e0d9a24ef
1 changed files with 7 additions and 0 deletions
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7
src/backend/replication/logical/relation.c
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@ -259,6 +259,13 @@ logicalrep_rel_open(LogicalRepRelId remoteid, LOCKMODE lockmode)
MemoryContext oldctx;
int i;
/* Release the no-longer-useful attrmap, if any. */
if (entry->attrmap)
{
pfree(entry->attrmap);
entry->attrmap = NULL;
}
/* Try to find and lock the relation by name. */
relid = RangeVarGetRelid(makeRangeVar(remoterel->nspname,
remoterel->relname, -1),