diff --git a/source/dnode/mnode/impl/src/mndScheduler.c b/source/dnode/mnode/impl/src/mndScheduler.c
index dfde6a92582dc3f196b4e425a7a8cfc72cbd646b..6b818525454d2bea0ed25615ef6a2c262b6b9caa 100644
--- a/source/dnode/mnode/impl/src/mndScheduler.c
+++ b/source/dnode/mnode/impl/src/mndScheduler.c
@@ -85,7 +85,7 @@ int32_t mndSchedInitSubEp(SMnode* pMnode, const SMqTopicObj* pTopic, SMqSubscrib
     taosArrayPush(pSub->unassignedVg, &consumerEp);
   }
 
-  qDestroyQueryDag(pDag);
+  /*qDestroyQueryDag(pDag);*/
 
   return 0;
 }