Bugfix: don't create ignorance table in parallel worker.

danolivo · Andrey Lepikhov · commit da59897d0115 · 2021-06-13T14:01:56.000+05:00
diff --git a/ignorance.c b/ignorance.c
@@ -2,6 +2,7 @@
 #include "ignorance.h"
 
 #include "access/heapam.h"
+#include "access/parallel.h"
 #include "executor/spi.h"
 #include "utils/lsyscache.h"
 #include "miscadmin.h"
@@ -16,9 +17,10 @@ set_ignorance(bool newval, void *extra)
 	 * It is not problem. We will check existence at each update and create this
 	 * table in dynamic mode, if needed.
 	 */
-	if (IsUnderPostmaster && newval && (aqo_log_ignorance != newval))
+	if (IsUnderPostmaster && !IsParallelWorker() && newval &&
+		(aqo_log_ignorance != newval))
 		/* Create storage and no error, if it exists already. */
-		(bool) create_ignorance_table(true);
+		create_ignorance_table(true);
 
 	aqo_log_ignorance = newval;
 }
@@ -101,7 +103,7 @@ update_ignorance(int qhash, int fhash, int fss_hash, Plan *plan)
 	if (!OidIsValid(reloid))
 	{
 		/* This table doesn't created on instance startup. Create now. */
-		(bool) create_ignorance_table(false);
+		create_ignorance_table(false);
 		reloid = RangeVarGetRelid(rv, NoLock, true);
 			if (!OidIsValid(reloid))
 				elog(PANIC, "Ignorance table does not exists!");
