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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 9ba6077464a..5176e8d6ace 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 1.166 2008/01/01 19:45:48 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/commands/cluster.c,v 1.167 2008/01/02 23:34:42 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -30,6 +30,7 @@
#include "catalog/namespace.h"
#include "catalog/toasting.h"
#include "commands/cluster.h"
+#include "commands/trigger.h"
#include "commands/vacuum.h"
#include "miscadmin.h"
#include "storage/procarray.h"
@@ -457,6 +458,17 @@ check_index_is_clusterable(Relation OldHeap, Oid indexOid, bool recheck)
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("cannot cluster temporary tables of other sessions")));
+ /*
+ * Also check for pending AFTER trigger events on the relation. We can't
+ * just leave those be, since they will try to fetch tuples that the
+ * CLUSTER has moved to new TIDs.
+ */
+ if (AfterTriggerPendingOnRel(RelationGetRelid(OldHeap)))
+ ereport(ERROR,
+ (errcode(ERRCODE_OBJECT_IN_USE),
+ errmsg("cannot cluster table \"%s\" because it has pending trigger events",
+ RelationGetRelationName(OldHeap))));
+
/* Drop relcache refcnt on OldIndex, but keep lock */
index_close(OldIndex, NoLock);
}