From 48b13e39e371fb4e98fb1da86268509bbf3ab5ba Mon Sep 17 00:00:00 2001 From: Amit Kapila Date: Mon, 11 Jan 2021 16:49:47 +0530 Subject: [PATCH v1] Fix relation descriptor leak. We missed closing the relation descriptor while sending changes via the root of partitioned relations during logical replication. Author: Amit Langote Reviewed-by: Amit Kapila Backpatch-through: 13, where it was introduced Discussion: https://postgr.es/m/tencent_41FEA657C206F19AB4F406BE9252A0F69C06@qq.com --- src/backend/replication/pgoutput/pgoutput.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/src/backend/replication/pgoutput/pgoutput.c b/src/backend/replication/pgoutput/pgoutput.c index 15379e3..c5fbebf 100644 --- a/src/backend/replication/pgoutput/pgoutput.c +++ b/src/backend/replication/pgoutput/pgoutput.c @@ -363,6 +363,7 @@ pgoutput_change(LogicalDecodingContext *ctx, ReorderBufferTXN *txn, PGOutputData *data = (PGOutputData *) ctx->output_plugin_private; MemoryContext old; RelationSyncEntry *relentry; + Relation ancestor = NULL; if (!is_publishable_relation(relation)) return; @@ -404,7 +405,8 @@ pgoutput_change(LogicalDecodingContext *ctx, ReorderBufferTXN *txn, if (relentry->publish_as_relid != RelationGetRelid(relation)) { Assert(relation->rd_rel->relispartition); - relation = RelationIdGetRelation(relentry->publish_as_relid); + ancestor = RelationIdGetRelation(relentry->publish_as_relid); + relation = ancestor; /* Convert tuple if needed. */ if (relentry->map) tuple = execute_attr_map_tuple(tuple, relentry->map); @@ -425,7 +427,8 @@ pgoutput_change(LogicalDecodingContext *ctx, ReorderBufferTXN *txn, if (relentry->publish_as_relid != RelationGetRelid(relation)) { Assert(relation->rd_rel->relispartition); - relation = RelationIdGetRelation(relentry->publish_as_relid); + ancestor = RelationIdGetRelation(relentry->publish_as_relid); + relation = ancestor; /* Convert tuples if needed. */ if (relentry->map) { @@ -448,7 +451,8 @@ pgoutput_change(LogicalDecodingContext *ctx, ReorderBufferTXN *txn, if (relentry->publish_as_relid != RelationGetRelid(relation)) { Assert(relation->rd_rel->relispartition); - relation = RelationIdGetRelation(relentry->publish_as_relid); + ancestor = RelationIdGetRelation(relentry->publish_as_relid); + relation = ancestor; /* Convert tuple if needed. */ if (relentry->map) oldtuple = execute_attr_map_tuple(oldtuple, relentry->map); @@ -465,6 +469,12 @@ pgoutput_change(LogicalDecodingContext *ctx, ReorderBufferTXN *txn, Assert(false); } + if (RelationIsValid(ancestor)) + { + RelationClose(ancestor); + ancestor = NULL; + } + /* Cleanup */ MemoryContextSwitchTo(old); MemoryContextReset(data->context); -- 1.8.3.1