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-rw-r--r--src/backend/commands/cluster.c14
1 files changed, 13 insertions, 1 deletions
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 7e1c2e3b08d..5cc6aca59d3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -11,7 +11,7 @@
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/commands/cluster.c,v 1.131.4.1 2005/02/06 20:19:24 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/commands/cluster.c,v 1.131.4.2 2007/09/12 15:16:23 alvherre Exp $
*
*-------------------------------------------------------------------------
*/
@@ -291,6 +291,18 @@ cluster_rel(RelToCluster *rvtc, bool recheck)
*/
OldHeap = heap_open(rvtc->tableOid, AccessExclusiveLock);
+ /*
+ * Don't allow cluster on temp tables of other backends ... their
+ * local buffer manager is not going to cope. In the recheck case,
+ * silently skip it. Otherwise continue -- there is a hard error
+ * in check_index_is_clusterable.
+ */
+ if (recheck && isOtherTempNamespace(RelationGetNamespace(OldHeap)))
+ {
+ heap_close(OldHeap, AccessExclusiveLock);
+ return;
+ }
+
/* Check index is valid to cluster on */
check_index_is_clusterable(OldHeap, rvtc->indexOid);