diff --git a/include/common/tmsgcb.h b/include/common/tmsgcb.h
index c934cb6961..2847f4278a 100644
--- a/include/common/tmsgcb.h
+++ b/include/common/tmsgcb.h
@@ -38,6 +38,7 @@ typedef enum {
   STREAM_QUEUE,
   ARB_QUEUE,
   STREAM_CTRL_QUEUE,
+  STREAM_LONG_EXEC_QUEUE,
   QUEUE_MAX,
 } EQueueType;
 
diff --git a/include/libs/executor/executor.h b/include/libs/executor/executor.h
index 883c5f7b99..988a650d6c 100644
--- a/include/libs/executor/executor.h
+++ b/include/libs/executor/executor.h
@@ -180,7 +180,7 @@ void qCleanExecTaskBlockBuf(qTaskInfo_t tinfo);
  */
 int32_t qAsyncKillTask(qTaskInfo_t tinfo, int32_t rspCode);
 
-int32_t qKillTask(qTaskInfo_t tinfo, int32_t rspCode);
+int32_t qKillTask(qTaskInfo_t tinfo, int32_t rspCode, int64_t waitDuration);
 
 bool qTaskIsExecuting(qTaskInfo_t qinfo);
 
diff --git a/include/libs/stream/tstream.h b/include/libs/stream/tstream.h
index a4d89dcdcc..b7d560e060 100644
--- a/include/libs/stream/tstream.h
+++ b/include/libs/stream/tstream.h
@@ -58,6 +58,7 @@ extern "C" {
 #define STREAM_EXEC_T_STOP_ALL_TASKS    (-5)
 #define STREAM_EXEC_T_RESUME_TASK       (-6)
 #define STREAM_EXEC_T_ADD_FAILED_TASK   (-7)
+#define STREAM_EXEC_T_STOP_ONE_TASK     (-8)
 
 typedef struct SStreamTask           SStreamTask;
 typedef struct SStreamQueue          SStreamQueue;
@@ -752,15 +753,19 @@ void    streamMetaCleanup();
 int32_t streamMetaOpen(const char* path, void* ahandle, FTaskBuild expandFunc, FTaskExpand expandTaskFn, int32_t vgId,
                        int64_t stage, startComplete_fn_t fn, SStreamMeta** pMeta);
 void    streamMetaClose(SStreamMeta* streamMeta);
-int32_t streamMetaSaveTask(SStreamMeta* pMeta, SStreamTask* pTask);  // save to stream meta store
-int32_t streamMetaRemoveTask(SStreamMeta* pMeta, STaskId* pKey);
+
+int32_t streamMetaSaveTaskInMeta(SStreamMeta* pMeta, SStreamTask* pTask);  // save to stream meta store
+int32_t streamMetaRemoveTaskInMeta(SStreamMeta* pMeta, STaskId* pKey);
+
 int32_t streamMetaRegisterTask(SStreamMeta* pMeta, int64_t ver, SStreamTask* pTask, bool* pAdded);
 int32_t streamMetaUnregisterTask(SStreamMeta* pMeta, int64_t streamId, int32_t taskId);
 int32_t streamMetaGetNumOfTasks(SStreamMeta* pMeta);
+
 int32_t streamMetaAcquireTaskNoLock(SStreamMeta* pMeta, int64_t streamId, int32_t taskId, SStreamTask** pTask);
 int32_t streamMetaAcquireTaskUnsafe(SStreamMeta* pMeta, STaskId* pId, SStreamTask** pTask);
 int32_t streamMetaAcquireTask(SStreamMeta* pMeta, int64_t streamId, int32_t taskId, SStreamTask** pTask);
 void    streamMetaReleaseTask(SStreamMeta* pMeta, SStreamTask* pTask);
+
 void    streamMetaClear(SStreamMeta* pMeta);
 void    streamMetaInitBackend(SStreamMeta* pMeta);
 int32_t streamMetaCommit(SStreamMeta* pMeta);
@@ -794,6 +799,7 @@ void    streamMetaLoadAllTasks(SStreamMeta* pMeta);
 int32_t streamMetaStartAllTasks(SStreamMeta* pMeta);
 int32_t streamMetaStopAllTasks(SStreamMeta* pMeta);
 int32_t streamMetaStartOneTask(SStreamMeta* pMeta, int64_t streamId, int32_t taskId);
+int32_t streamMetaStopOneTask(SStreamMeta* pMeta, int64_t streamId, int32_t taskId);
 bool    streamMetaAllTasksReady(const SStreamMeta* pMeta);
 int32_t streamTaskSendNegotiateChkptIdMsg(SStreamTask* pTask);
 int32_t streamTaskCheckIfReqConsenChkptId(SStreamTask* pTask, int64_t ts);
diff --git a/include/util/tworker.h b/include/util/tworker.h
index a3ba7dba6d..bc0dde1a37 100644
--- a/include/util/tworker.h
+++ b/include/util/tworker.h
@@ -76,7 +76,7 @@ void        tQWorkerFreeQueue(SQWorkerPool *pool, STaosQueue *queue);
 
 int32_t     tAutoQWorkerInit(SAutoQWorkerPool *pool);
 void        tAutoQWorkerCleanup(SAutoQWorkerPool *pool);
-STaosQueue *tAutoQWorkerAllocQueue(SAutoQWorkerPool *pool, void *ahandle, FItem fp);
+STaosQueue *tAutoQWorkerAllocQueue(SAutoQWorkerPool *pool, void *ahandle, FItem fp, int32_t minNum);
 void        tAutoQWorkerFreeQueue(SAutoQWorkerPool *pool, STaosQueue *queue);
 
 int32_t     tWWorkerInit(SWWorkerPool *pool);
diff --git a/source/dnode/mgmt/mgmt_vnode/inc/vmInt.h b/source/dnode/mgmt/mgmt_vnode/inc/vmInt.h
index 84f5149624..9b4c11d6ae 100644
--- a/source/dnode/mgmt/mgmt_vnode/inc/vmInt.h
+++ b/source/dnode/mgmt/mgmt_vnode/inc/vmInt.h
@@ -32,6 +32,7 @@ typedef struct SVnodeMgmt {
   const char           *name;
   SQueryAutoQWorkerPool queryPool;
   SAutoQWorkerPool      streamPool;
+  SAutoQWorkerPool      streamLongExecPool;
   SWWorkerPool          streamCtrlPool;
   SWWorkerPool          fetchPool;
   SSingleWorker         mgmtWorker;
@@ -75,6 +76,7 @@ typedef struct {
   STaosQueue  *pQueryQ;
   STaosQueue  *pStreamQ;
   STaosQueue  *pStreamCtrlQ;
+  STaosQueue  *pStreamLongExecQ;
   STaosQueue  *pFetchQ;
   STaosQueue  *pMultiMgmQ;
 } SVnodeObj;
@@ -137,6 +139,8 @@ int32_t vmPutMsgToQueryQueue(SVnodeMgmt *pMgmt, SRpcMsg *pMsg);
 int32_t vmPutMsgToFetchQueue(SVnodeMgmt *pMgmt, SRpcMsg *pMsg);
 int32_t vmPutMsgToStreamQueue(SVnodeMgmt *pMgmt, SRpcMsg *pMsg);
 int32_t vmPutMsgToStreamCtrlQueue(SVnodeMgmt *pMgmt, SRpcMsg *pMsg);
+int32_t vmPutMsgToStreamLongExecQueue(SVnodeMgmt *pMgmt, SRpcMsg *pMsg);
+
 int32_t vmPutMsgToMergeQueue(SVnodeMgmt *pMgmt, SRpcMsg *pMsg);
 int32_t vmPutMsgToMgmtQueue(SVnodeMgmt *pMgmt, SRpcMsg *pMsg);
 int32_t vmPutMsgToMultiMgmtQueue(SVnodeMgmt *pMgmt, SRpcMsg *pMsg);
diff --git a/source/dnode/mgmt/mgmt_vnode/src/vmHandle.c b/source/dnode/mgmt/mgmt_vnode/src/vmHandle.c
index 234d4f41e1..1dea7d3cad 100644
--- a/source/dnode/mgmt/mgmt_vnode/src/vmHandle.c
+++ b/source/dnode/mgmt/mgmt_vnode/src/vmHandle.c
@@ -1008,27 +1008,29 @@ SArray *vmGetMsgHandles() {
   if (dmSetMgmtHandle(pArray, TDMT_STREAM_TASK_RUN, vmPutMsgToStreamQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_STREAM_TASK_DISPATCH, vmPutMsgToStreamCtrlQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_STREAM_TASK_DISPATCH_RSP, vmPutMsgToStreamCtrlQueue, 0) == NULL) goto _OVER;
-  if (dmSetMgmtHandle(pArray, TDMT_STREAM_RETRIEVE, vmPutMsgToStreamQueue, 0) == NULL) goto _OVER;
-  if (dmSetMgmtHandle(pArray, TDMT_STREAM_RETRIEVE_RSP, vmPutMsgToStreamQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_VND_STREAM_TASK_CHECK, vmPutMsgToStreamCtrlQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_VND_STREAM_TASK_CHECK_RSP, vmPutMsgToStreamCtrlQueue, 0) == NULL) goto _OVER;
-  if (dmSetMgmtHandle(pArray, TDMT_STREAM_TASK_PAUSE, vmPutMsgToWriteQueue, 0) == NULL) goto _OVER;
-  if (dmSetMgmtHandle(pArray, TDMT_STREAM_TASK_RESUME, vmPutMsgToWriteQueue, 0) == NULL) goto _OVER;
-  if (dmSetMgmtHandle(pArray, TDMT_STREAM_TASK_STOP, vmPutMsgToWriteQueue, 0) == NULL) goto _OVER;
-  if (dmSetMgmtHandle(pArray, TDMT_VND_STREAM_CHECK_POINT_SOURCE, vmPutMsgToWriteQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_STREAM_TASK_CHECKPOINT_READY, vmPutMsgToStreamCtrlQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_STREAM_TASK_CHECKPOINT_READY_RSP, vmPutMsgToStreamCtrlQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_STREAM_RETRIEVE_TRIGGER, vmPutMsgToStreamCtrlQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_STREAM_RETRIEVE_TRIGGER_RSP, vmPutMsgToStreamCtrlQueue, 0) == NULL) goto _OVER;
-  if (dmSetMgmtHandle(pArray, TDMT_VND_STREAM_TASK_UPDATE, vmPutMsgToWriteQueue, 0) == NULL) goto _OVER;
-  if (dmSetMgmtHandle(pArray, TDMT_VND_STREAM_TASK_RESET, vmPutMsgToWriteQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_MND_STREAM_HEARTBEAT_RSP, vmPutMsgToStreamCtrlQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_MND_STREAM_REQ_CHKPT_RSP, vmPutMsgToStreamCtrlQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_MND_STREAM_CHKPT_REPORT_RSP, vmPutMsgToStreamCtrlQueue, 0) == NULL) goto _OVER;
+  if (dmSetMgmtHandle(pArray, TDMT_VND_STREAM_SCAN_HISTORY, vmPutMsgToStreamLongExecQueue, 0) == NULL) goto _OVER;
+
   if (dmSetMgmtHandle(pArray, TDMT_VND_GET_STREAM_PROGRESS, vmPutMsgToStreamQueue, 0) == NULL) goto _OVER;
+  if (dmSetMgmtHandle(pArray, TDMT_STREAM_RETRIEVE, vmPutMsgToStreamQueue, 0) == NULL) goto _OVER;
+  if (dmSetMgmtHandle(pArray, TDMT_STREAM_RETRIEVE_RSP, vmPutMsgToStreamQueue, 0) == NULL) goto _OVER;
 
   if (dmSetMgmtHandle(pArray, TDMT_STREAM_TASK_UPDATE_CHKPT, vmPutMsgToWriteQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_STREAM_CONSEN_CHKPT, vmPutMsgToWriteQueue, 0) == NULL) goto _OVER;
+  if (dmSetMgmtHandle(pArray, TDMT_STREAM_TASK_PAUSE, vmPutMsgToWriteQueue, 0) == NULL) goto _OVER;
+  if (dmSetMgmtHandle(pArray, TDMT_STREAM_TASK_RESUME, vmPutMsgToWriteQueue, 0) == NULL) goto _OVER;
+  if (dmSetMgmtHandle(pArray, TDMT_STREAM_TASK_STOP, vmPutMsgToWriteQueue, 0) == NULL) goto _OVER;
+  if (dmSetMgmtHandle(pArray, TDMT_VND_STREAM_CHECK_POINT_SOURCE, vmPutMsgToWriteQueue, 0) == NULL) goto _OVER;
+  if (dmSetMgmtHandle(pArray, TDMT_VND_STREAM_TASK_UPDATE, vmPutMsgToWriteQueue, 0) == NULL) goto _OVER;
+  if (dmSetMgmtHandle(pArray, TDMT_VND_STREAM_TASK_RESET, vmPutMsgToWriteQueue, 0) == NULL) goto _OVER;
 
   if (dmSetMgmtHandle(pArray, TDMT_VND_ALTER_REPLICA, vmPutMsgToMgmtQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_VND_ALTER_CONFIG, vmPutMsgToWriteQueue, 0) == NULL) goto _OVER;
diff --git a/source/dnode/mgmt/mgmt_vnode/src/vmInt.c b/source/dnode/mgmt/mgmt_vnode/src/vmInt.c
index d71e0b02c4..6f30977e10 100644
--- a/source/dnode/mgmt/mgmt_vnode/src/vmInt.c
+++ b/source/dnode/mgmt/mgmt_vnode/src/vmInt.c
@@ -398,10 +398,14 @@ void vmCloseVnode(SVnodeMgmt *pMgmt, SVnodeObj *pVnode, bool commitAndRemoveWal,
 
   dInfo("vgId:%d, wait for vnode stream queue:%p is empty, %d remains", pVnode->vgId,
         pVnode->pStreamQ, taosQueueItemSize(pVnode->pStreamQ));
-  while (!taosQueueEmpty(pVnode->pStreamQ)) taosMsleep(10);
+  while (!taosQueueEmpty(pVnode->pStreamQ)) taosMsleep(50);
 
   dInfo("vgId:%d, wait for vnode stream ctrl queue:%p is empty", pVnode->vgId, pVnode->pStreamCtrlQ);
-  while (!taosQueueEmpty(pVnode->pStreamCtrlQ)) taosMsleep(10);
+  while (!taosQueueEmpty(pVnode->pStreamCtrlQ)) taosMsleep(50);
+
+  dInfo("vgId:%d, wait for vnode stream long-exec queue:%p is empty, %d remains", pVnode->vgId,
+        pVnode->pStreamLongExecQ, taosQueueItemSize(pVnode->pStreamLongExecQ));
+  while (!taosQueueEmpty(pVnode->pStreamLongExecQ)) taosMsleep(50);
 
   dInfo("vgId:%d, all vnode queues is empty", pVnode->vgId);
 
diff --git a/source/dnode/mgmt/mgmt_vnode/src/vmWorker.c b/source/dnode/mgmt/mgmt_vnode/src/vmWorker.c
index b398bdf242..5acd06bbda 100644
--- a/source/dnode/mgmt/mgmt_vnode/src/vmWorker.c
+++ b/source/dnode/mgmt/mgmt_vnode/src/vmWorker.c
@@ -150,7 +150,7 @@ static void vmProcessStreamCtrlQueue(SQueueInfo *pInfo, STaosQall* pQall, int32_
     SRpcMsg        *pMsg = pItem;
     const STraceId *trace = &pMsg->info.traceId;
 
-    dGTrace("vgId:%d, msg:%p get from vnode-ctrl-stream queue", pVnode->vgId, pMsg);
+    dGTrace("vgId:%d, msg:%p get from vnode-stream-ctrl queue", pVnode->vgId, pMsg);
     code = vnodeProcessStreamCtrlMsg(pVnode->pImpl, pMsg, pInfo);
     if (code != 0) {
       terrno = code;
@@ -165,6 +165,26 @@ static void vmProcessStreamCtrlQueue(SQueueInfo *pInfo, STaosQall* pQall, int32_
   }
 }
 
+static void vmProcessStreamLongExecQueue(SQueueInfo *pInfo, SRpcMsg *pMsg) {
+  SVnodeObj      *pVnode = pInfo->ahandle;
+  const STraceId *trace = &pMsg->info.traceId;
+  int32_t         code = 0;
+
+  dGTrace("vgId:%d, msg:%p get from vnode-stream long-exec queue", pVnode->vgId, pMsg);
+
+  code = vnodeProcessStreamLongExecMsg(pVnode->pImpl, pMsg, pInfo);
+  if (code != 0) {
+    terrno = code;
+    dGError("vgId:%d, msg:%p failed to process stream msg %s since %s", pVnode->vgId, pMsg, TMSG_INFO(pMsg->msgType),
+            tstrerror(code));
+    vmSendRsp(pMsg, code);
+  }
+
+  dGTrace("vgId:%d, msg:%p is freed, code:0x%x", pVnode->vgId, pMsg, code);
+  rpcFreeCont(pMsg->pCont);
+  taosFreeQitem(pMsg);
+}
+
 static void vmProcessFetchQueue(SQueueInfo *pInfo, STaosQall *qall, int32_t numOfMsgs) {
   SVnodeObj *pVnode = pInfo->ahandle;
   SRpcMsg   *pMsg = NULL;
@@ -274,9 +294,13 @@ static int32_t vmPutMsgToQueue(SVnodeMgmt *pMgmt, SRpcMsg *pMsg, EQueueType qtyp
       code = taosWriteQitem(pVnode->pStreamQ, pMsg);
       break;
     case STREAM_CTRL_QUEUE:
-      dGTrace("vgId:%d, msg:%p put into vnode-ctrl-stream queue", pVnode->vgId, pMsg);
+      dGTrace("vgId:%d, msg:%p put into vnode-stream-ctrl queue", pVnode->vgId, pMsg);
       code = taosWriteQitem(pVnode->pStreamCtrlQ, pMsg);
       break;
+    case STREAM_LONG_EXEC_QUEUE:
+      dGTrace("vgId:%d, msg:%p put into vnode-stream-long-exec queue", pVnode->vgId, pMsg);
+      code = taosWriteQitem(pVnode->pStreamLongExecQ, pMsg);
+      break;
     case FETCH_QUEUE:
       dGTrace("vgId:%d, msg:%p put into vnode-fetch queue", pVnode->vgId, pMsg);
       code = taosWriteQitem(pVnode->pFetchQ, pMsg);
@@ -335,6 +359,8 @@ int32_t vmPutMsgToStreamQueue(SVnodeMgmt *pMgmt, SRpcMsg *pMsg) { return vmPutMs
 
 int32_t vmPutMsgToStreamCtrlQueue(SVnodeMgmt *pMgmt, SRpcMsg *pMsg) { return vmPutMsgToQueue(pMgmt, pMsg, STREAM_CTRL_QUEUE); }
 
+int32_t vmPutMsgToStreamLongExecQueue(SVnodeMgmt *pMgmt, SRpcMsg *pMsg) { return vmPutMsgToQueue(pMgmt, pMsg, STREAM_LONG_EXEC_QUEUE); }
+
 int32_t vmPutMsgToMultiMgmtQueue(SVnodeMgmt *pMgmt, SRpcMsg *pMsg) {
   const STraceId *trace = &pMsg->info.traceId;
   dGTrace("msg:%p, put into vnode-multi-mgmt queue", pMsg);
@@ -409,6 +435,10 @@ int32_t vmGetQueueSize(SVnodeMgmt *pMgmt, int32_t vgId, EQueueType qtype) {
         break;
       case STREAM_CTRL_QUEUE:
         size = taosQueueItemSize(pVnode->pStreamCtrlQ);
+        break;
+      case STREAM_LONG_EXEC_QUEUE:
+        size = taosQueueItemSize(pVnode->pStreamLongExecQ);
+        break;
       default:
         break;
     }
@@ -451,13 +481,16 @@ int32_t vmAllocQueue(SVnodeMgmt *pMgmt, SVnodeObj *pVnode) {
   }
 
   pVnode->pQueryQ = tQueryAutoQWorkerAllocQueue(&pMgmt->queryPool, pVnode, (FItem)vmProcessQueryQueue);
-  pVnode->pStreamQ = tAutoQWorkerAllocQueue(&pMgmt->streamPool, pVnode, (FItem)vmProcessStreamQueue);
   pVnode->pFetchQ = tWWorkerAllocQueue(&pMgmt->fetchPool, pVnode, (FItems)vmProcessFetchQueue);
+
+  // init stream msg processing queue family
+  pVnode->pStreamQ = tAutoQWorkerAllocQueue(&pMgmt->streamPool, pVnode, (FItem)vmProcessStreamQueue, 2);
   pVnode->pStreamCtrlQ = tWWorkerAllocQueue(&pMgmt->streamCtrlPool, pVnode, (FItems)vmProcessStreamCtrlQueue);
+  pVnode->pStreamLongExecQ = tAutoQWorkerAllocQueue(&pMgmt->streamLongExecPool, pVnode, (FItem)vmProcessStreamLongExecQueue, 1);
 
   if (pVnode->pWriteW.queue == NULL || pVnode->pSyncW.queue == NULL || pVnode->pSyncRdW.queue == NULL ||
       pVnode->pApplyW.queue == NULL || pVnode->pQueryQ == NULL || pVnode->pStreamQ == NULL || pVnode->pFetchQ == NULL
-      || pVnode->pStreamCtrlQ == NULL) {
+      || pVnode->pStreamCtrlQ == NULL || pVnode->pStreamLongExecQ == NULL) {
     return TSDB_CODE_OUT_OF_MEMORY;
   }
 
@@ -473,6 +506,7 @@ int32_t vmAllocQueue(SVnodeMgmt *pMgmt, SVnodeObj *pVnode) {
   dInfo("vgId:%d, fetch-queue:%p is alloced, thread:%08" PRId64, pVnode->vgId, pVnode->pFetchQ,
         taosQueueGetThreadId(pVnode->pFetchQ));
   dInfo("vgId:%d, stream-queue:%p is alloced", pVnode->vgId, pVnode->pStreamQ);
+  dInfo("vgId:%d, stream-long-exec-queue:%p is alloced", pVnode->vgId, pVnode->pStreamLongExecQ);
   dInfo("vgId:%d, stream-ctrl-queue:%p is alloced, thread:%08" PRId64, pVnode->vgId, pVnode->pStreamCtrlQ,
         taosQueueGetThreadId(pVnode->pStreamCtrlQ));
   return 0;
@@ -481,17 +515,22 @@ int32_t vmAllocQueue(SVnodeMgmt *pMgmt, SVnodeObj *pVnode) {
 void vmFreeQueue(SVnodeMgmt *pMgmt, SVnodeObj *pVnode) {
   tQueryAutoQWorkerFreeQueue(&pMgmt->queryPool, pVnode->pQueryQ);
   tAutoQWorkerFreeQueue(&pMgmt->streamPool, pVnode->pStreamQ);
+  tAutoQWorkerFreeQueue(&pMgmt->streamLongExecPool, pVnode->pStreamLongExecQ);
   tWWorkerFreeQueue(&pMgmt->streamCtrlPool, pVnode->pStreamCtrlQ);
   tWWorkerFreeQueue(&pMgmt->fetchPool, pVnode->pFetchQ);
   pVnode->pQueryQ = NULL;
+  pVnode->pFetchQ = NULL;
+
   pVnode->pStreamQ = NULL;
   pVnode->pStreamCtrlQ = NULL;
-  pVnode->pFetchQ = NULL;
+  pVnode->pStreamLongExecQ = NULL;
+
   dDebug("vgId:%d, queue is freed", pVnode->vgId);
 }
 
 int32_t vmStartWorker(SVnodeMgmt *pMgmt) {
-  int32_t                code = 0;
+  int32_t code = 0;
+
   SQueryAutoQWorkerPool *pQPool = &pMgmt->queryPool;
   pQPool->name = "vnode-query";
   pQPool->min = tsNumOfVnodeQueryThreads;
@@ -505,8 +544,13 @@ int32_t vmStartWorker(SVnodeMgmt *pMgmt) {
   pStreamPool->ratio = tsRatioOfVnodeStreamThreads;
   if ((code = tAutoQWorkerInit(pStreamPool)) != 0) return code;
 
+  SAutoQWorkerPool *pLongExecPool = &pMgmt->streamLongExecPool;
+  pLongExecPool->name = "vnode-stream-long-exec";
+  pLongExecPool->ratio = tsRatioOfVnodeStreamThreads/3;
+  if ((code = tAutoQWorkerInit(pLongExecPool)) != 0) return code;
+
   SWWorkerPool *pStreamCtrlPool = &pMgmt->streamCtrlPool;
-  pStreamCtrlPool->name = "vnode-ctrl-stream";
+  pStreamCtrlPool->name = "vnode-stream-ctrl";
   pStreamCtrlPool->max = 1;
   if ((code = tWWorkerInit(pStreamCtrlPool)) != 0) return code;
 
@@ -541,6 +585,7 @@ int32_t vmStartWorker(SVnodeMgmt *pMgmt) {
 void vmStopWorker(SVnodeMgmt *pMgmt) {
   tQueryAutoQWorkerCleanup(&pMgmt->queryPool);
   tAutoQWorkerCleanup(&pMgmt->streamPool);
+  tAutoQWorkerCleanup(&pMgmt->streamLongExecPool);
   tWWorkerCleanup(&pMgmt->streamCtrlPool);
   tWWorkerCleanup(&pMgmt->fetchPool);
   dDebug("vnode workers are closed");
diff --git a/source/dnode/vnode/inc/vnode.h b/source/dnode/vnode/inc/vnode.h
index 50d75c4838..871a8c06e1 100644
--- a/source/dnode/vnode/inc/vnode.h
+++ b/source/dnode/vnode/inc/vnode.h
@@ -113,6 +113,7 @@ int32_t vnodeProcessQueryMsg(SVnode *pVnode, SRpcMsg *pMsg, SQueueInfo *pInfo);
 int32_t vnodeProcessFetchMsg(SVnode *pVnode, SRpcMsg *pMsg, SQueueInfo *pInfo);
 int32_t vnodeProcessStreamMsg(SVnode *pVnode, SRpcMsg *pMsg, SQueueInfo *pInfo);
 int32_t vnodeProcessStreamCtrlMsg(SVnode *pVnode, SRpcMsg *pMsg, SQueueInfo *pInfo);
+int32_t vnodeProcessStreamLongExecMsg(SVnode *pVnode, SRpcMsg *pMsg, SQueueInfo *pInfo);
 void    vnodeProposeWriteMsg(SQueueInfo *pInfo, STaosQall *qall, int32_t numOfMsgs);
 void    vnodeApplyWriteMsg(SQueueInfo *pInfo, STaosQall *qall, int32_t numOfMsgs);
 void    vnodeProposeCommitOnNeed(SVnode *pVnode, bool atExit);
diff --git a/source/dnode/vnode/src/sma/smaRollup.c b/source/dnode/vnode/src/sma/smaRollup.c
index 7d83dbcf84..1f755f816e 100644
--- a/source/dnode/vnode/src/sma/smaRollup.c
+++ b/source/dnode/vnode/src/sma/smaRollup.c
@@ -1302,7 +1302,7 @@ _checkpoint:
           }
 
           streamMetaWLock(pMeta);
-          if ((code = streamMetaSaveTask(pMeta, pTask)) != 0) {
+          if ((code = streamMetaSaveTaskInMeta(pMeta, pTask)) != 0) {
             streamMetaWUnLock(pMeta);
             taosHashCancelIterate(pInfoHash, infoHash);
             TSDB_CHECK_CODE(code, lino, _exit);
diff --git a/source/dnode/vnode/src/tqCommon/tqCommon.c b/source/dnode/vnode/src/tqCommon/tqCommon.c
index 77632d328e..76f0fd6bc6 100644
--- a/source/dnode/vnode/src/tqCommon/tqCommon.c
+++ b/source/dnode/vnode/src/tqCommon/tqCommon.c
@@ -260,13 +260,13 @@ int32_t tqStreamTaskProcessUpdateReq(SStreamMeta* pMeta, SMsgCb* cb, SRpcMsg* pM
   // stream do update the nodeEp info, write it into stream meta.
   if (updated) {
     tqDebug("s-task:%s vgId:%d save task after update epset, and stop task", idstr, vgId);
-    code = streamMetaSaveTask(pMeta, pTask);
+    code = streamMetaSaveTaskInMeta(pMeta, pTask);
     if (code) {
       tqError("s-task:%s vgId:%d failed to save task, code:%s", idstr, vgId, tstrerror(code));
     }
 
     if (pHTask != NULL) {
-      code = streamMetaSaveTask(pMeta, pHTask);
+      code = streamMetaSaveTaskInMeta(pMeta, pHTask);
       if (code) {
         tqError("s-task:%s vgId:%d failed to save related history task, code:%s", idstr, vgId, tstrerror(code));
       }
@@ -743,6 +743,8 @@ int32_t tqStreamTaskProcessDropReq(SStreamMeta* pMeta, char* msg, int32_t msgLen
   }
 
   streamMetaWUnLock(pMeta);
+  tqDebug("vgId:%d process drop task:0x%x completed", vgId, pReq->taskId);
+
   return 0;  // always return success
 }
 
@@ -857,6 +859,9 @@ int32_t tqStreamTaskProcessRunReq(SStreamMeta* pMeta, SRpcMsg* pMsg, bool isLead
   } else if (type == STREAM_EXEC_T_ADD_FAILED_TASK) {
     code = streamMetaAddFailedTask(pMeta, req.streamId, req.taskId);
     return code;
+  } else if (type == STREAM_EXEC_T_STOP_ONE_TASK) {
+    code = streamMetaStopOneTask(pMeta, req.streamId, req.taskId);
+    return code;
   } else if (type == STREAM_EXEC_T_RESUME_TASK) {  // task resume to run after idle for a while
     SStreamTask* pTask = NULL;
     code = streamMetaAcquireTask(pMeta, req.streamId, req.taskId, &pTask);
diff --git a/source/dnode/vnode/src/vnd/vnodeSvr.c b/source/dnode/vnode/src/vnd/vnodeSvr.c
index 6190f4b0a7..6562504988 100644
--- a/source/dnode/vnode/src/vnd/vnodeSvr.c
+++ b/source/dnode/vnode/src/vnd/vnodeSvr.c
@@ -945,8 +945,6 @@ int32_t vnodeProcessStreamMsg(SVnode *pVnode, SRpcMsg *pMsg, SQueueInfo *pInfo)
       return tqProcessTaskRetrieveReq(pVnode->pTq, pMsg);
     case TDMT_STREAM_RETRIEVE_RSP:
       return tqProcessTaskRetrieveRsp(pVnode->pTq, pMsg);
-    case TDMT_VND_STREAM_SCAN_HISTORY:
-      return tqProcessTaskScanHistory(pVnode->pTq, pMsg);
     case TDMT_VND_GET_STREAM_PROGRESS:
       return tqStreamProgressRetrieveReq(pVnode->pTq, pMsg);
     default:
@@ -993,6 +991,22 @@ int32_t vnodeProcessStreamCtrlMsg(SVnode *pVnode, SRpcMsg *pMsg, SQueueInfo *pIn
   }
 }
 
+int32_t vnodeProcessStreamLongExecMsg(SVnode *pVnode, SRpcMsg *pMsg, SQueueInfo *pInfo) {
+  vTrace("vgId:%d, msg:%p in stream long exec queue is processing", pVnode->config.vgId, pMsg);
+  if (!syncIsReadyForRead(pVnode->sync)) {
+    vnodeRedirectRpcMsg(pVnode, pMsg, terrno);
+    return 0;
+  }
+
+  switch (pMsg->msgType) {
+    case TDMT_VND_STREAM_SCAN_HISTORY:
+      return tqProcessTaskScanHistory(pVnode->pTq, pMsg);
+    default:
+      vError("unknown msg type:%d in stream long exec queue", pMsg->msgType);
+      return TSDB_CODE_APP_ERROR;
+  }
+}
+
 void smaHandleRes(void *pVnode, int64_t smaId, const SArray *data) {
   int32_t code = tdProcessTSmaInsert(((SVnode *)pVnode)->pSma, smaId, (const char *)data);
   if (code) {
diff --git a/source/libs/executor/src/executor.c b/source/libs/executor/src/executor.c
index 364ab02c80..b6044eaacf 100644
--- a/source/libs/executor/src/executor.c
+++ b/source/libs/executor/src/executor.c
@@ -972,26 +972,43 @@ int32_t qAsyncKillTask(qTaskInfo_t qinfo, int32_t rspCode) {
   return TSDB_CODE_SUCCESS;
 }
 
-int32_t qKillTask(qTaskInfo_t tinfo, int32_t rspCode) {
+int32_t qKillTask(qTaskInfo_t tinfo, int32_t rspCode, int64_t waitDuration) {
+  int64_t        st = taosGetTimestampMs();
   SExecTaskInfo* pTaskInfo = (SExecTaskInfo*)tinfo;
   if (pTaskInfo == NULL) {
     return TSDB_CODE_QRY_INVALID_QHANDLE;
   }
 
-  qDebug("%s sync killed execTask", GET_TASKID(pTaskInfo));
+  if (waitDuration > 0) {
+    qDebug("%s sync killed execTask, and waiting for %.2fs", GET_TASKID(pTaskInfo), waitDuration/1000.0);
+  } else {
+    qDebug("%s async killed execTask", GET_TASKID(pTaskInfo));
+  }
+
   setTaskKilled(pTaskInfo, TSDB_CODE_TSC_QUERY_KILLED);
 
-  while (1) {
-    taosWLockLatch(&pTaskInfo->lock);
-    if (qTaskIsExecuting(pTaskInfo)) {  // let's wait for 100 ms and try again
-      taosWUnLockLatch(&pTaskInfo->lock);
-      taosMsleep(100);
-    } else {  // not running now
-      pTaskInfo->code = rspCode;
-      taosWUnLockLatch(&pTaskInfo->lock);
-      return TSDB_CODE_SUCCESS;
+  if (waitDuration > 0) {
+    while (1) {
+      taosWLockLatch(&pTaskInfo->lock);
+      if (qTaskIsExecuting(pTaskInfo)) {  // let's wait for 100 ms and try again
+        taosWUnLockLatch(&pTaskInfo->lock);
+
+        taosMsleep(200);
+
+        int64_t d = taosGetTimestampMs() - st;
+        if (d >= waitDuration && waitDuration >= 0) {
+          qWarn("%s waiting more than %.2fs, not wait anymore", GET_TASKID(pTaskInfo), waitDuration / 1000.0);
+          return TSDB_CODE_SUCCESS;
+        }
+      } else {  // not running now
+        pTaskInfo->code = rspCode;
+        taosWUnLockLatch(&pTaskInfo->lock);
+        return TSDB_CODE_SUCCESS;
+      }
     }
   }
+
+  return TSDB_CODE_SUCCESS;
 }
 
 bool qTaskIsExecuting(qTaskInfo_t qinfo) {
diff --git a/source/libs/executor/src/projectoperator.c b/source/libs/executor/src/projectoperator.c
index eb448a13f5..b0f78c1aad 100644
--- a/source/libs/executor/src/projectoperator.c
+++ b/source/libs/executor/src/projectoperator.c
@@ -42,9 +42,7 @@ typedef struct SIndefOperatorInfo {
 } SIndefOperatorInfo;
 
 static int32_t      doGenerateSourceData(SOperatorInfo* pOperator);
-static SSDataBlock* doProjectOperation1(SOperatorInfo* pOperator);
 static int32_t      doProjectOperation(SOperatorInfo* pOperator, SSDataBlock** pResBlock);
-static SSDataBlock* doApplyIndefinitFunction1(SOperatorInfo* pOperator);
 static int32_t      doApplyIndefinitFunction(SOperatorInfo* pOperator, SSDataBlock** pResBlock);
 static int32_t      setRowTsColumnOutputInfo(SqlFunctionCtx* pCtx, int32_t numOfCols, SArray** pResList);
 static int32_t      setFunctionResultOutput(SOperatorInfo* pOperator, SOptrBasicInfo* pInfo, SAggSupporter* pSup,
@@ -557,12 +555,6 @@ static void doHandleDataBlock(SOperatorInfo* pOperator, SSDataBlock* pBlock, SOp
   }
 }
 
-SSDataBlock* doApplyIndefinitFunction1(SOperatorInfo* pOperator) {
-  SSDataBlock* pResBlock = NULL;
-  pOperator->pTaskInfo->code = doApplyIndefinitFunction(pOperator, &pResBlock);
-  return pResBlock;
-}
-
 int32_t doApplyIndefinitFunction(SOperatorInfo* pOperator, SSDataBlock** pResBlock) {
   QRY_PARAM_CHECK(pResBlock);
   SIndefOperatorInfo* pIndefInfo = pOperator->info;
diff --git a/source/libs/stream/src/streamCheckpoint.c b/source/libs/stream/src/streamCheckpoint.c
index c53e1a19a3..2d53c99f34 100644
--- a/source/libs/stream/src/streamCheckpoint.c
+++ b/source/libs/stream/src/streamCheckpoint.c
@@ -734,7 +734,7 @@ int32_t streamTaskUpdateTaskCheckpointInfo(SStreamTask* pTask, bool restored, SV
 
   pTask->status.taskStatus = TASK_STATUS__READY;
 
-  code = streamMetaSaveTask(pMeta, pTask);
+  code = streamMetaSaveTaskInMeta(pMeta, pTask);
   streamMutexUnlock(&pTask->lock);
 
   if (code != TSDB_CODE_SUCCESS) {
diff --git a/source/libs/stream/src/streamExec.c b/source/libs/stream/src/streamExec.c
index 267dc88807..0528e336bc 100644
--- a/source/libs/stream/src/streamExec.c
+++ b/source/libs/stream/src/streamExec.c
@@ -878,7 +878,7 @@ static int32_t doStreamExecTask(SStreamTask* pTask) {
       }
 
       double el = (taosGetTimestampMs() - st) / 1000.0;
-      if (el > 5.0) {  // elapsed more than 5 sec, not occupy the CPU anymore
+      if (el > 2.0) {  // elapsed more than 5 sec, not occupy the CPU anymore
         stDebug("s-task:%s occupy more than 5.0s, release the exec threads and idle for 500ms", id);
         streamTaskSetIdleInfo(pTask, 500);
         return code;
diff --git a/source/libs/stream/src/streamMeta.c b/source/libs/stream/src/streamMeta.c
index ddd0201460..5d605c29a5 100644
--- a/source/libs/stream/src/streamMeta.c
+++ b/source/libs/stream/src/streamMeta.c
@@ -632,7 +632,7 @@ void streamMetaCloseImpl(void* arg) {
 }
 
 // todo let's check the status for each task
-int32_t streamMetaSaveTask(SStreamMeta* pMeta, SStreamTask* pTask) {
+int32_t streamMetaSaveTaskInMeta(SStreamMeta* pMeta, SStreamTask* pTask) {
   int32_t vgId = pTask->pMeta->vgId;
   void*   buf = NULL;
   int32_t len;
@@ -682,7 +682,7 @@ int32_t streamMetaSaveTask(SStreamMeta* pMeta, SStreamTask* pTask) {
   return code;
 }
 
-int32_t streamMetaRemoveTask(SStreamMeta* pMeta, STaskId* pTaskId) {
+int32_t streamMetaRemoveTaskInMeta(SStreamMeta* pMeta, STaskId* pTaskId) {
   int64_t key[2] = {pTaskId->streamId, pTaskId->taskId};
   int32_t code = tdbTbDelete(pMeta->pTaskDb, key, STREAM_TASK_KEY_LEN, pMeta->txn);
   if (code != 0) {
@@ -705,7 +705,7 @@ int32_t streamMetaRegisterTask(SStreamMeta* pMeta, int64_t ver, SStreamTask* pTa
   void*   p = taosHashGet(pMeta->pTasksMap, &id, sizeof(id));
 
   if (p != NULL) {
-    stDebug("s-task:%" PRIx64 " already exist in meta, no need to register", id.taskId);
+    stDebug("s-task:0x%" PRIx64 " already exist in meta, no need to register", id.taskId);
     tFreeStreamTask(pTask);
     return code;
   }
@@ -735,7 +735,7 @@ int32_t streamMetaRegisterTask(SStreamMeta* pMeta, int64_t ver, SStreamTask* pTa
     return code;
   }
 
-  if ((code = streamMetaSaveTask(pMeta, pTask)) != 0) {
+  if ((code = streamMetaSaveTaskInMeta(pMeta, pTask)) != 0) {
     int32_t unused = taosHashRemove(pMeta->pTasksMap, &id, sizeof(id));
     void*   pUnused = taosArrayPop(pMeta->pTaskList);
 
@@ -885,6 +885,7 @@ static void doRemoveIdFromList(SArray* pTaskList, int32_t num, SStreamTaskId* id
 
 static int32_t streamTaskSendTransSuccessMsg(SStreamTask* pTask, void* param) {
   int32_t code = 0;
+
   if (pTask->info.taskLevel == TASK_LEVEL__SOURCE) {
     code = streamTaskSendCheckpointSourceRsp(pTask);
     if (code) {
@@ -895,7 +896,7 @@ static int32_t streamTaskSendTransSuccessMsg(SStreamTask* pTask, void* param) {
 
   // let's kill the query procedure within stream, to end it ASAP.
   if (pTask->info.taskLevel != TASK_LEVEL__SINK && pTask->exec.pExecutor != NULL) {
-    code = qKillTask(pTask->exec.pExecutor, TSDB_CODE_SUCCESS);
+    code = qKillTask(pTask->exec.pExecutor, TSDB_CODE_SUCCESS, -1);
     if (code != TSDB_CODE_SUCCESS) {
       stError("s-task:%s failed to kill task related query handle, code:%s", pTask->id.idStr, tstrerror(code));
     }
@@ -932,7 +933,7 @@ int32_t streamMetaUnregisterTask(SStreamMeta* pMeta, int64_t streamId, int32_t t
 
     code = taosHashRemove(pMeta->pTasksMap, &id, sizeof(id));
     doRemoveIdFromList(pMeta->pTaskList, (int32_t)taosArrayGetSize(pMeta->pTaskList), &pTask->id);
-    code = streamMetaRemoveTask(pMeta, &id);
+    code = streamMetaRemoveTaskInMeta(pMeta, &id);
     if (code) {
       stError("vgId:%d failed to remove task:0x%" PRIx64 ", code:%s", pMeta->vgId, id.taskId, tstrerror(code));
     }
@@ -963,6 +964,32 @@ int32_t streamMetaUnregisterTask(SStreamMeta* pMeta, int64_t streamId, int32_t t
   return 0;
 }
 
+int32_t streamMetaStopOneTask(SStreamMeta* pMeta, int64_t streamId, int32_t taskId) {
+  SStreamTask* pTask = NULL;
+  int32_t      code = 0;
+  int32_t      vgId = pMeta->vgId;
+  int32_t      numOfTasks = 0;
+
+  streamMetaWLock(pMeta);
+
+//  code = streamMetaUnregisterTask(pMeta, streamId, taskId);
+//  numOfTasks = streamMetaGetNumOfTasks(pMeta);
+//  if (code) {
+//    stError("vgId:%d failed to drop task:0x%x, code:%s", vgId, taskId, tstrerror(code));
+//  }
+//
+//  code = streamMetaCommit(pMeta);
+//  if (code) {
+//    stError("vgId:%d failed to commit after drop task:0x%x, code:%s", vgId, taskId, tstrerror(code));
+//  } else {
+//    stDebug("s-task:0x%"PRIx64"-0x%x vgId:%d dropped, remain tasks:%d", streamId, taskId, pMeta->vgId, numOfTasks);
+//  }
+
+  streamMetaWUnLock(pMeta);
+
+  return code;
+}
+
 int32_t streamMetaBegin(SStreamMeta* pMeta) {
   streamMetaWLock(pMeta);
   int32_t code = tdbBegin(pMeta->db, &pMeta->txn, tdbDefaultMalloc, tdbDefaultFree, NULL,
@@ -1185,7 +1212,7 @@ void streamMetaLoadAllTasks(SStreamMeta* pMeta) {
   if (taosArrayGetSize(pRecycleList) > 0) {
     for (int32_t i = 0; i < taosArrayGetSize(pRecycleList); ++i) {
       STaskId* pId = taosArrayGet(pRecycleList, i);
-      code = streamMetaRemoveTask(pMeta, pId);
+      code = streamMetaRemoveTaskInMeta(pMeta, pId);
       if (code) {
         stError("s-task:0x%" PRIx64 " failed to remove task, code:%s", pId->taskId, tstrerror(code));
       }
diff --git a/source/libs/stream/src/streamStartHistory.c b/source/libs/stream/src/streamStartHistory.c
index 54a8929123..f8b1b5ecbc 100644
--- a/source/libs/stream/src/streamStartHistory.c
+++ b/source/libs/stream/src/streamStartHistory.c
@@ -76,7 +76,7 @@ int32_t streamStartScanHistoryAsync(SStreamTask* pTask, int8_t igUntreated) {
   memcpy(serializedReq, &req, len);
 
   SRpcMsg rpcMsg = {.contLen = len, .pCont = serializedReq, .msgType = TDMT_VND_STREAM_SCAN_HISTORY};
-  return tmsgPutToQueue(pTask->pMsgCb, STREAM_QUEUE, &rpcMsg);
+  return tmsgPutToQueue(pTask->pMsgCb, STREAM_LONG_EXEC_QUEUE, &rpcMsg);
 }
 
 void streamExecScanHistoryInFuture(SStreamTask* pTask, int32_t idleDuration) {
diff --git a/source/libs/stream/src/streamStartTask.c b/source/libs/stream/src/streamStartTask.c
index c40d5ef928..60c1694dda 100644
--- a/source/libs/stream/src/streamStartTask.c
+++ b/source/libs/stream/src/streamStartTask.c
@@ -451,7 +451,6 @@ int32_t streamMetaStopAllTasks(SStreamMeta* pMeta) {
       continue;
     }
 
-    int64_t refId = pTask->id.refId;
     int32_t ret = streamTaskStop(pTask);
     if (ret) {
       stError("s-task:0x%x failed to stop task, code:%s", pTaskId->taskId, tstrerror(ret));
diff --git a/source/libs/stream/src/streamTask.c b/source/libs/stream/src/streamTask.c
index d27ed520c6..e4e8a37b37 100644
--- a/source/libs/stream/src/streamTask.c
+++ b/source/libs/stream/src/streamTask.c
@@ -703,7 +703,7 @@ int32_t streamTaskStop(SStreamTask* pTask) {
   }
 
   if (pTask->info.taskLevel != TASK_LEVEL__SINK && pTask->exec.pExecutor != NULL) {
-    code = qKillTask(pTask->exec.pExecutor, TSDB_CODE_SUCCESS);
+    code = qKillTask(pTask->exec.pExecutor, TSDB_CODE_SUCCESS, 5000);
     if (code != TSDB_CODE_SUCCESS) {
       stError("s-task:%s failed to kill task related query handle, code:%s", id, tstrerror(code));
     }
@@ -862,7 +862,7 @@ int32_t streamTaskClearHTaskAttr(SStreamTask* pTask, int32_t resetRelHalt) {
       pStreamTask->status.taskStatus = TASK_STATUS__READY;
     }
 
-    code = streamMetaSaveTask(pMeta, pStreamTask);
+    code = streamMetaSaveTaskInMeta(pMeta, pStreamTask);
     streamMutexUnlock(&(pStreamTask->lock));
 
     streamMetaReleaseTask(pMeta, pStreamTask);
@@ -1025,7 +1025,7 @@ static int32_t taskPauseCallback(SStreamTask* pTask, void* param) {
   // in case of fill-history task, stop the tsdb file scan operation.
   if (pTask->info.fillHistory == 1) {
     void* pExecutor = pTask->exec.pExecutor;
-    code = qKillTask(pExecutor, TSDB_CODE_SUCCESS);
+    code = qKillTask(pExecutor, TSDB_CODE_SUCCESS, 10000);
   }
 
   stDebug("vgId:%d s-task:%s set pause flag and pause task", pMeta->vgId, pTask->id.idStr);
@@ -1287,6 +1287,8 @@ const char* streamTaskGetExecType(int32_t type) {
       return "resume-task-from-idle";
     case STREAM_EXEC_T_ADD_FAILED_TASK:
       return "record-start-failed-task";
+    case STREAM_EXEC_T_STOP_ONE_TASK:
+      return "stop-one-task";
     case 0:
       return "exec-all-tasks";
     default:
diff --git a/source/util/src/tworker.c b/source/util/src/tworker.c
index dbd8cb159e..469f98fcf0 100644
--- a/source/util/src/tworker.c
+++ b/source/util/src/tworker.c
@@ -256,7 +256,7 @@ static void *tAutoQWorkerThreadFp(SQueueWorker *worker) {
   return NULL;
 }
 
-STaosQueue *tAutoQWorkerAllocQueue(SAutoQWorkerPool *pool, void *ahandle, FItem fp) {
+STaosQueue *tAutoQWorkerAllocQueue(SAutoQWorkerPool *pool, void *ahandle, FItem fp, int32_t minNum) {
   int32_t     code;
   STaosQueue *queue;
 
@@ -280,7 +280,10 @@ STaosQueue *tAutoQWorkerAllocQueue(SAutoQWorkerPool *pool, void *ahandle, FItem
   int32_t queueNum = taosGetQueueNumber(pool->qset);
   int32_t curWorkerNum = taosArrayGetSize(pool->workers);
   int32_t dstWorkerNum = ceilf(queueNum * pool->ratio);
-  if (dstWorkerNum < 2) dstWorkerNum = 2;
+
+  if (dstWorkerNum < minNum) {
+    dstWorkerNum = minNum;
+  }
 
   // spawn a thread to process queue
   while (curWorkerNum < dstWorkerNum) {
diff --git a/tests/ci/func.txt b/tests/ci/func.txt
index 45d4fb1c11..c724568537 100644
--- a/tests/ci/func.txt
+++ b/tests/ci/func.txt
@@ -79,7 +79,7 @@
 (void)streamMetaAddFailedTask
 (void)streamMetaAddTaskLaunchResult
 (void)streamMetaCommit
-(void)streamMetaRemoveTask
+(void)streamMetaRemoveTaskInMeta
 (void)streamMetaSendHbHelper
 (void)streamMetaStartAllTasks
 (void)streamMetaStartOneTask