diff --git a/source/dnode/mnode/impl/inc/mndStream.h b/source/dnode/mnode/impl/inc/mndStream.h
index 47898caf27..19fd2a3fd4 100644
--- a/source/dnode/mnode/impl/inc/mndStream.h
+++ b/source/dnode/mnode/impl/inc/mndStream.h
@@ -33,7 +33,6 @@ SSdbRow *mndStreamActionDecode(SSdbRaw *pRaw);
 
 int32_t mndDropStreamByDb(SMnode *pMnode, STrans *pTrans, SDbObj *pDb);
 int32_t mndPersistStream(SMnode *pMnode, STrans *pTrans, SStreamObj *pStream);
-int32_t mndStopInvolvedStreamTasks(SMnode *pMnode, int32_t vgId, STrans *pTrans);
 
 // for sma
 // TODO refactor
diff --git a/source/dnode/mnode/impl/src/mndStream.c b/source/dnode/mnode/impl/src/mndStream.c
index 8253e6caeb..772db6c6b0 100644
--- a/source/dnode/mnode/impl/src/mndStream.c
+++ b/source/dnode/mnode/impl/src/mndStream.c
@@ -2090,76 +2090,6 @@ static int32_t mndProcessNodeCheckReq(SRpcMsg *pMsg) {
   return 0;
 }
 
-
-
-int32_t mndBuildUpdateTaskStatusTrans(SStreamObj* pStream, STrans* pTrans) {
-  pStream->status = STREAM_STATUS__STOP;
-
-  int32_t size = taosArrayGetSize(pStream->tasks);
-  for (int32_t i = 0; i < size; i++) {
-    SArray *pLevel = taosArrayGetP(pStream->tasks, i);
-
-    int32_t numOfTasks = taosArrayGetSize(pLevel);
-    for (int32_t j = 0; j < numOfTasks; j++) {
-      SStreamTask *pTask = taosArrayGetP(pLevel, j);
-
-      SVPauseStreamTaskReq *pReq = taosMemoryCalloc(1, sizeof(SVPauseStreamTaskReq));
-      if (pReq == NULL) {
-        mError("failed to malloc in pause stream, size:%" PRIzu ", code:%s", sizeof(SVPauseStreamTaskReq),
-               tstrerror(TSDB_CODE_OUT_OF_MEMORY));
-        terrno = TSDB_CODE_OUT_OF_MEMORY;
-        return -1;
-      }
-
-      pReq->head.vgId = htonl(pTask->info.nodeId);
-      pReq->taskId = pTask->id.taskId;
-      pReq->streamId = pTask->id.streamId;
-
-      STransAction action = {0};
-      initTransAction(&action, pReq, sizeof(SVPauseStreamTaskReq), TDMT_STREAM_TASK_STOP, &pTask->info.epSet);
-      if (mndTransAppendRedoAction(pTrans, &action) != 0) {
-        taosMemoryFree(pReq);
-        return -1;
-      }
-
-      if (atomic_load_8(&pTask->status.taskStatus) != TASK_STATUS__STOP) {
-        atomic_store_8(&pTask->status.keepTaskStatus, pTask->status.taskStatus);
-        atomic_store_8(&pTask->status.taskStatus, TASK_STATUS__STOP);
-      }
-    }
-  }
-  return 0;
-}
-
-int32_t mndStopInvolvedStreamTasks(SMnode *pMnode, int32_t vgId, STrans *pTrans) {
-  SSdb   *pSdb = pMnode->pSdb;
-  SVgObj *pVgroup = mndAcquireVgroup(pMnode, vgId);
-
-  const char *p = strdup(pVgroup->dbName);
-  mndReleaseVgroup(pMnode, pVgroup);
-
-  SStreamObj *pStream = NULL;
-  void       *pIter = NULL;
-  while (1) {
-    pIter = sdbFetch(pSdb, SDB_STREAM, pIter, (void **)&pStream);
-    if (pIter == NULL) {
-      break;
-    }
-
-    if (strcmp(pStream->targetDb, p) == 0 || strcmp(pStream->sourceDb, p) == 0) {
-      int32_t code = mndBuildUpdateTaskStatusTrans(pStream, pTrans);
-      //    mDebug("stream:0x%"PRIx64" involved node changed, create update trans", pStream->uid);
-      if (code != TSDB_CODE_SUCCESS) {
-        // todo
-      }
-    }
-
-    mndReleaseStream(pMnode, pStream);
-  }
-
-  return 0;
-}
-
 // todo: this process should be executed by the write queue worker of the mnode
 //int32_t mndProcessStreamHb(SRpcMsg *pReq) {
 //  SMnode      *pMnode = pReq->info.node;
diff --git a/source/dnode/mnode/impl/src/mndVgroup.c b/source/dnode/mnode/impl/src/mndVgroup.c
index 05325dcce5..f3dded9c76 100644
--- a/source/dnode/mnode/impl/src/mndVgroup.c
+++ b/source/dnode/mnode/impl/src/mndVgroup.c
@@ -1680,8 +1680,6 @@ static int32_t mndRedistributeVgroup(SMnode *pMnode, SRpcMsg *pReq, SDbObj *pDb,
       pNew1->memUsed += vgMem;
     }
 
-//    mndStopInvolvedStreamTasks(pMnode, pVgroup->vgId, pTrans);
-
     if (mndAddIncVgroupReplicaToTrans(pMnode, pTrans, pDb, &newVg, pNew1->id) != 0) goto _OVER;
     if (mndAddDecVgroupReplicaFromTrans(pMnode, pTrans, pDb, &newVg, pOld1->id) != 0) goto _OVER;
   }