diff --git a/src/backend/executor/nodeHash.c b/src/backend/executor/nodeHash.c
index 0a519fae31..04eb3650aa 100644
--- a/src/backend/executor/nodeHash.c
+++ b/src/backend/executor/nodeHash.c
@@ -288,8 +288,6 @@ MultiExecParallelHash(HashState *node)
 					ExecParallelHashTableInsert(hashtable, slot, hashvalue);
 				hashtable->partialTuples++;
 			}
-			BarrierDetach(&pstate->grow_buckets_barrier);
-			BarrierDetach(&pstate->grow_batches_barrier);
 
 			/*
 			 * Make sure that any tuples we wrote to disk are visible to
@@ -304,6 +302,9 @@ MultiExecParallelHash(HashState *node)
 			 */
 			ExecParallelHashMergeCounters(hashtable);
 
+			BarrierDetach(&pstate->grow_buckets_barrier);
+			BarrierDetach(&pstate->grow_batches_barrier);
+
 			/*
 			 * Wait for everyone to finish building and flushing files and
 			 * counters.