diff --git a/source/client/src/tmq.c b/source/client/src/tmq.c
index b0542e350f43f01106aca2e6a6f966b9daea9836..0d9cd4bcff0d7336e43461487dd213342fa613ef 100644
--- a/source/client/src/tmq.c
+++ b/source/client/src/tmq.c
@@ -343,7 +343,7 @@ tmq_list_t* tmq_list_new() {
 
 int32_t tmq_list_append(tmq_list_t* list, const char* src) {
   SArray* container = &list->container;
-  char*   topic = strDupUnquo(src);
+  char*   topic = strdup(src);
   if (taosArrayPush(container, &topic) == NULL) return -1;
   return 0;
 }
diff --git a/source/dnode/mnode/impl/src/mndStream.c b/source/dnode/mnode/impl/src/mndStream.c
index c2125f75f8f81fc2627a4755fbd1cb44277fdfd8..5777df4fa6b96cdb1c4693ce76ca5c44d50cc80f 100644
--- a/source/dnode/mnode/impl/src/mndStream.c
+++ b/source/dnode/mnode/impl/src/mndStream.c
@@ -235,7 +235,8 @@ static int32_t mndStreamGetPlanString(const char *ast, int8_t triggerType, int64
 }
 
 static int32_t mndBuildStreamObjFromCreateReq(SMnode *pMnode, SStreamObj *pObj, SCMCreateStreamReq *pCreate) {
-  SNode *pAst = NULL;
+  SNode      *pAst = NULL;
+  SQueryPlan *pPlan = NULL;
 
   mDebug("stream:%s to create", pCreate->name);
   memcpy(pObj->name, pCreate->name, TSDB_STREAM_FNAME_LEN);
@@ -293,7 +294,6 @@ static int32_t mndBuildStreamObjFromCreateReq(SMnode *pMnode, SStreamObj *pObj,
     goto FAIL;
   }
 
-  SQueryPlan  *pPlan = NULL;
   SPlanContext cxt = {
       .pAstRoot = pAst,
       .topicQuery = false,
@@ -317,6 +317,7 @@ static int32_t mndBuildStreamObjFromCreateReq(SMnode *pMnode, SStreamObj *pObj,
 
 FAIL:
   if (pAst != NULL) nodesDestroyNode(pAst);
+  if (pPlan != NULL) qDestroyQueryPlan(pPlan);
   return 0;
 }
 
@@ -541,7 +542,7 @@ static int32_t mndProcessCreateStreamReq(SRpcMsg *pReq) {
   // build stream obj from request
   SStreamObj streamObj = {0};
   if (mndBuildStreamObjFromCreateReq(pMnode, &streamObj, &createStreamReq) < 0) {
-    ASSERT(0);
+    /*ASSERT(0);*/
     mError("stream:%s, failed to create since %s", createStreamReq.name, terrstr());
     goto _OVER;
   }
@@ -689,7 +690,14 @@ int32_t mndDropStreamByDb(SMnode *pMnode, STrans *pTrans, SDbObj *pDb) {
         terrno = TSDB_CODE_MND_STREAM_ALREADY_EXIST;
         return -1;
       } else {
-        // TODO drop all task on snode
+#if 0
+        if (mndDropStreamTasks(pMnode, pTrans, pStream) < 0) {
+          mError("stream:%s, failed to drop task since %s", pStream->name, terrstr());
+          sdbRelease(pMnode->pSdb, pStream);
+          sdbCancelFetch(pSdb, pIter);
+          return -1;
+        }
+#endif
         if (mndPersistDropStreamLog(pMnode, pTrans, pStream) < 0) {
           sdbRelease(pSdb, pStream);
           sdbCancelFetch(pSdb, pIter);
diff --git a/source/dnode/vnode/src/tq/tq.c b/source/dnode/vnode/src/tq/tq.c
index df80a4c218f2b98aad11de5c3c5cf0113714470a..3b6e9abc67169e770a42c73f8f24a9354778ab17 100644
--- a/source/dnode/vnode/src/tq/tq.c
+++ b/source/dnode/vnode/src/tq/tq.c
@@ -82,6 +82,13 @@ void tqClose(STQ* pTq) {
   if (pTq) {
     tqOffsetClose(pTq->pOffsetStore);
     taosHashCleanup(pTq->handles);
+    void* pIter = NULL;
+    while (1) {
+      pIter = taosHashIterate(pTq->pStreamTasks, pIter);
+      if (pIter == NULL) break;
+      SStreamTask* pTask = *(SStreamTask**)pIter;
+      tFreeSStreamTask(pTask);
+    }
     taosHashCleanup(pTq->pStreamTasks);
     taosHashCleanup(pTq->pushMgr);
     taosMemoryFree(pTq->path);
@@ -608,7 +615,8 @@ int32_t tqProcessTaskDeployReq(STQ* pTq, char* msg, int32_t msgLen) {
 
   streamSetupTrigger(pTask);
 
-  tqInfo("deploy stream task id %d child id %d on vgId:%d", pTask->taskId, pTask->selfChildId, TD_VID(pTq->pVnode));
+  tqInfo("deploy stream task on vg %d, task id %d, child id %d", TD_VID(pTq->pVnode), pTask->taskId,
+         pTask->selfChildId);
 
   taosHashPut(pTq->pStreamTasks, &pTask->taskId, sizeof(int32_t), &pTask, sizeof(void*));
 
@@ -634,9 +642,6 @@ int32_t tqProcessStreamTrigger(STQ* pTq, SSubmitReq* pReq) {
     pIter = taosHashIterate(pTq->pStreamTasks, pIter);
     if (pIter == NULL) break;
     SStreamTask* pTask = *(SStreamTask**)pIter;
-    if (atomic_load_8(&pTask->taskStatus) == TASK_STATUS__DROPPING) {
-      continue;
-    }
     if (!pTask->isDataScan) continue;
 
     if (!failed) {
@@ -665,11 +670,12 @@ int32_t tqProcessTaskRunReq(STQ* pTq, SRpcMsg* pMsg) {
   SStreamTaskRunReq* pReq = pMsg->pCont;
   int32_t            taskId = pReq->taskId;
   SStreamTask*       pTask = *(SStreamTask**)taosHashGet(pTq->pStreamTasks, &taskId, sizeof(int32_t));
-  if (atomic_load_8(&pTask->taskStatus) != TASK_STATUS__NORMAL) {
+  if (pTask) {
+    streamProcessRunReq(pTask);
     return 0;
+  } else {
+    return -1;
   }
-  streamProcessRunReq(pTask);
-  return 0;
 }
 
 int32_t tqProcessTaskDispatchReq(STQ* pTq, SRpcMsg* pMsg) {
@@ -682,55 +688,62 @@ int32_t tqProcessTaskDispatchReq(STQ* pTq, SRpcMsg* pMsg) {
   tDecodeStreamDispatchReq(&decoder, &req);
   int32_t      taskId = req.taskId;
   SStreamTask* pTask = *(SStreamTask**)taosHashGet(pTq->pStreamTasks, &taskId, sizeof(int32_t));
-  if (atomic_load_8(&pTask->taskStatus) != TASK_STATUS__NORMAL) {
+  if (pTask) {
+    SRpcMsg rsp = {
+        .info = pMsg->info,
+        .code = 0,
+    };
+    streamProcessDispatchReq(pTask, &req, &rsp);
     return 0;
+  } else {
+    return -1;
   }
-  SRpcMsg rsp = {
-      .info = pMsg->info,
-      .code = 0,
-  };
-  streamProcessDispatchReq(pTask, &req, &rsp);
-  return 0;
 }
 
 int32_t tqProcessTaskRecoverReq(STQ* pTq, SRpcMsg* pMsg) {
   SStreamTaskRecoverReq* pReq = pMsg->pCont;
   int32_t                taskId = pReq->taskId;
   SStreamTask*           pTask = *(SStreamTask**)taosHashGet(pTq->pStreamTasks, &taskId, sizeof(int32_t));
-  if (atomic_load_8(&pTask->taskStatus) != TASK_STATUS__NORMAL) {
+  if (pTask) {
+    streamProcessRecoverReq(pTask, pReq, pMsg);
     return 0;
+  } else {
+    return -1;
   }
-  streamProcessRecoverReq(pTask, pReq, pMsg);
-  return 0;
 }
 
 int32_t tqProcessTaskDispatchRsp(STQ* pTq, SRpcMsg* pMsg) {
   SStreamDispatchRsp* pRsp = POINTER_SHIFT(pMsg->pCont, sizeof(SMsgHead));
   int32_t             taskId = pRsp->taskId;
   SStreamTask*        pTask = *(SStreamTask**)taosHashGet(pTq->pStreamTasks, &taskId, sizeof(int32_t));
-  if (atomic_load_8(&pTask->taskStatus) != TASK_STATUS__NORMAL) {
+  if (pTask) {
+    streamProcessDispatchRsp(pTask, pRsp);
     return 0;
+  } else {
+    return -1;
   }
-  streamProcessDispatchRsp(pTask, pRsp);
-  return 0;
 }
 
 int32_t tqProcessTaskRecoverRsp(STQ* pTq, SRpcMsg* pMsg) {
   SStreamTaskRecoverRsp* pRsp = pMsg->pCont;
   int32_t                taskId = pRsp->taskId;
   SStreamTask*           pTask = *(SStreamTask**)taosHashGet(pTq->pStreamTasks, &taskId, sizeof(int32_t));
-  if (atomic_load_8(&pTask->taskStatus) != TASK_STATUS__NORMAL) {
+  if (pTask) {
+    streamProcessRecoverRsp(pTask, pRsp);
     return 0;
+  } else {
+    return -1;
   }
-  streamProcessRecoverRsp(pTask, pRsp);
-  return 0;
 }
 
 int32_t tqProcessTaskDropReq(STQ* pTq, char* msg, int32_t msgLen) {
   SVDropStreamTaskReq* pReq = (SVDropStreamTaskReq*)msg;
 
   SStreamTask* pTask = *(SStreamTask**)taosHashGet(pTq->pStreamTasks, &pReq->taskId, sizeof(int32_t));
-  atomic_store_8(&pTask->taskStatus, TASK_STATUS__DROPPING);
+  if (pTask) {
+    taosHashRemove(pTq->pStreamTasks, &pReq->taskId, sizeof(int32_t));
+    atomic_store_8(&pTask->taskStatus, TASK_STATUS__DROPPING);
+  }
   // todo
   // clear queue
   // push drop req into queue
diff --git a/source/dnode/vnode/src/tq/tqRead.c b/source/dnode/vnode/src/tq/tqRead.c
index 8753ecc47c04f1d5d4e151c502436225cc49e806..dda306ccf8eb69507162dc40d6b33f1a5cafbb65 100644
--- a/source/dnode/vnode/src/tq/tqRead.c
+++ b/source/dnode/vnode/src/tq/tqRead.c
@@ -98,8 +98,21 @@ STqReader* tqOpenReader(SVnode* pVnode) {
 
 void tqCloseReader(STqReader* pReader) {
   // close wal reader
+  if (pReader->pWalReader) {
+    walCloseReader(pReader->pWalReader);
+  }
   // free cached schema
+  if (pReader->pSchema) {
+    taosMemoryFree(pReader->pSchema);
+  }
+  if (pReader->pSchemaWrapper) {
+    tDeleteSSchemaWrapper(pReader->pSchemaWrapper);
+  }
+  if (pReader->pColIdList) {
+    taosArrayDestroy(pReader->pColIdList);
+  }
   // free hash
+  taosHashCleanup(pReader->tbIdHash);
   taosMemoryFree(pReader);
 }
 
diff --git a/source/dnode/vnode/src/tq/tqSink.c b/source/dnode/vnode/src/tq/tqSink.c
index dbbb2b266101d2d21fc7bbbe1590b0f59af82e33..1980f826b0e3b0fe35e9f7e20741e4abce62e0f2 100644
--- a/source/dnode/vnode/src/tq/tqSink.c
+++ b/source/dnode/vnode/src/tq/tqSink.c
@@ -146,7 +146,7 @@ SSubmitReq* tdBlockToSubmit(const SArray* pBlocks, const STSchema* pTSchema, boo
         const STColumn*  pColumn = &pTSchema->columns[k];
         SColumnInfoData* pColData = taosArrayGet(pDataBlock->pDataBlock, k);
         if (colDataIsNull_s(pColData, j)) {
-          tdAppendColValToRow(&rb, pColumn->colId, pColumn->type, TD_VTYPE_NONE, NULL, false, pColumn->offset, k);
+          tdAppendColValToRow(&rb, pColumn->colId, pColumn->type, TD_VTYPE_NULL, NULL, false, pColumn->offset, k);
         } else {
           void* data = colDataGetData(pColData, j);
           tdAppendColValToRow(&rb, pColumn->colId, pColumn->type, TD_VTYPE_NORM, data, true, pColumn->offset, k);
diff --git a/source/libs/executor/inc/executorimpl.h b/source/libs/executor/inc/executorimpl.h
index 045b4379ca582e82e927bd4a67868ebcc3431b86..24a2ad055822f1a593fdb95daf19da3ae026c531 100644
--- a/source/libs/executor/inc/executorimpl.h
+++ b/source/libs/executor/inc/executorimpl.h
@@ -147,7 +147,6 @@ typedef struct {
   SSDataBlock*   pullOverBlk;   // for streaming
   SWalFilterCond cond;
   int64_t        lastScanUid;
-  SStreamQueue*  inputQueue;
 } SStreamTaskInfo;
 
 typedef struct SExecTaskInfo {
diff --git a/source/libs/executor/src/executorMain.c b/source/libs/executor/src/executorMain.c
index 6381d20255004a71541f0e6c227ea90fa6613769..d910b8be344be744d72ee176c2cf549eac2c4341 100644
--- a/source/libs/executor/src/executorMain.c
+++ b/source/libs/executor/src/executorMain.c
@@ -44,13 +44,6 @@ int32_t qCreateExecTask(SReadHandle* readHandle, int32_t vgId, uint64_t taskId,
     goto _error;
   }
 
-  if (model == OPTR_EXEC_MODEL_STREAM) {
-    (*pTask)->streamInfo.inputQueue = streamQueueOpen();
-    if ((*pTask)->streamInfo.inputQueue == NULL) {
-      goto _error;
-    }
-  }
-
   SDataSinkMgtCfg cfg = {.maxDataBlockNum = 1000, .maxDataBlockNumPerQuery = 100};
   code = dsDataSinkMgtInit(&cfg);
   if (code != TSDB_CODE_SUCCESS) {
@@ -259,12 +252,14 @@ int32_t qExtractStreamScanner(qTaskInfo_t tinfo, void** scanner) {
   }
 }
 
+#if 0
 int32_t qStreamInput(qTaskInfo_t tinfo, void* pItem) {
   SExecTaskInfo* pTaskInfo = (SExecTaskInfo*)tinfo;
   ASSERT(pTaskInfo->execModel == OPTR_EXEC_MODEL_STREAM);
   taosWriteQitem(pTaskInfo->streamInfo.inputQueue->queue, pItem);
   return 0;
 }
+#endif
 
 void* qExtractReaderFromStreamScanner(void* scanner) {
   SStreamScanInfo* pInfo = scanner;
diff --git a/source/libs/executor/src/scanoperator.c b/source/libs/executor/src/scanoperator.c
index b14648991e62dddabfac180495f6f790d96f038c..38ac6f942dc8411a6fdb653463e4713afdf18e14 100644
--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -884,22 +884,22 @@ static bool prepareRangeScan(SStreamScanInfo* pInfo, SSDataBlock* pBlock, int32_
   return true;
 }
 
-static STimeWindow getSlidingWindow(TSKEY* tsCol, SInterval* pInterval, SDataBlockInfo* pDataBlockInfo, int32_t* pRowIndex) {
-  SResultRowInfo   dumyInfo;
+static STimeWindow getSlidingWindow(TSKEY* tsCol, SInterval* pInterval, SDataBlockInfo* pDataBlockInfo,
+                                    int32_t* pRowIndex) {
+  SResultRowInfo dumyInfo;
   dumyInfo.cur.pageId = -1;
-  STimeWindow win = getActiveTimeWindow(NULL, &dumyInfo, tsCol[*pRowIndex], pInterval,
-      TSDB_ORDER_ASC);
+  STimeWindow win = getActiveTimeWindow(NULL, &dumyInfo, tsCol[*pRowIndex], pInterval, TSDB_ORDER_ASC);
   STimeWindow endWin = win;
   STimeWindow preWin = win;
   while (1) {
-    (*pRowIndex) += getNumOfRowsInTimeWindow(pDataBlockInfo, tsCol, *pRowIndex, endWin.ekey,
-        binarySearchForKey, NULL, TSDB_ORDER_ASC);
+    (*pRowIndex) += getNumOfRowsInTimeWindow(pDataBlockInfo, tsCol, *pRowIndex, endWin.ekey, binarySearchForKey, NULL,
+                                             TSDB_ORDER_ASC);
     do {
       preWin = endWin;
       getNextTimeWindow(pInterval, &endWin, TSDB_ORDER_ASC);
     } while (tsCol[(*pRowIndex) - 1] >= endWin.skey);
     endWin = preWin;
-    if (win.ekey == endWin.ekey || (*pRowIndex) == pDataBlockInfo->rows ) {
+    if (win.ekey == endWin.ekey || (*pRowIndex) == pDataBlockInfo->rows) {
       win.ekey = endWin.ekey;
       return win;
     }
@@ -933,7 +933,8 @@ static bool prepareDataScan(SStreamScanInfo* pInfo, SSDataBlock* pSDB, int32_t t
       pInfo->updateWin.ekey = tsCols[*pRowIndex - 1];
       // win = getActiveTimeWindow(NULL, &dumyInfo, tsCols[*pRowIndex], &pInfo->interval, TSDB_ORDER_ASC);
       // (*pRowIndex) +=
-      //     getNumOfRowsInTimeWindow(&pSDB->info, tsCols, *pRowIndex, win.ekey, binarySearchForKey, NULL, TSDB_ORDER_ASC);
+      //     getNumOfRowsInTimeWindow(&pSDB->info, tsCols, *pRowIndex, win.ekey, binarySearchForKey, NULL,
+      //     TSDB_ORDER_ASC);
     }
     needRead = true;
   } else if (isStateWindow(pInfo)) {
@@ -1447,6 +1448,28 @@ SOperatorInfo* createRawScanOperatorInfo(SReadHandle* pHandle, STableScanPhysiNo
   return NULL;
 }
 
+static void destroyStreamScanOperatorInfo(void* param, int32_t numOfOutput) {
+  SStreamScanInfo* pStreamScan = (SStreamScanInfo*)param;
+#if 0
+  if (pStreamScan->pTableScanOp && pStreamScan->pTableScanOp->info) {
+    STableScanInfo* pTableScanInfo = pStreamScan->pTableScanOp->info;
+    destroyTableScanOperatorInfo(pTableScanInfo, 1);
+  }
+#endif
+  if (pStreamScan->tqReader) {
+    tqCloseReader(pStreamScan->tqReader);
+  }
+  if (pStreamScan->pColMatchInfo) {
+    taosArrayDestroy(pStreamScan->pColMatchInfo);
+  }
+  blockDataDestroy(pStreamScan->pRes);
+  blockDataDestroy(pStreamScan->pUpdateRes);
+  blockDataDestroy(pStreamScan->pPullDataRes);
+  blockDataDestroy(pStreamScan->pDeleteDataRes);
+  taosArrayDestroy(pStreamScan->pBlockLists);
+  taosMemoryFree(pStreamScan);
+}
+
 SOperatorInfo* createStreamScanOperatorInfo(SReadHandle* pHandle, STableScanPhysiNode* pTableScanNode,
                                             SExecTaskInfo* pTaskInfo, STimeWindowAggSupp* pTwSup, uint64_t queryId,
                                             uint64_t taskId) {
@@ -1561,8 +1584,8 @@ SOperatorInfo* createStreamScanOperatorInfo(SReadHandle* pHandle, STableScanPhys
   pOperator->exprSupp.numOfExprs = taosArrayGetSize(pInfo->pRes->pDataBlock);
   pOperator->pTaskInfo = pTaskInfo;
 
-  pOperator->fpSet =
-      createOperatorFpSet(operatorDummyOpenFn, doStreamScan, NULL, NULL, operatorDummyCloseFn, NULL, NULL, NULL);
+  pOperator->fpSet = createOperatorFpSet(operatorDummyOpenFn, doStreamScan, NULL, NULL, destroyStreamScanOperatorInfo,
+                                         NULL, NULL, NULL);
 
   return pOperator;
 
diff --git a/source/libs/stream/src/streamExec.c b/source/libs/stream/src/streamExec.c
index d0d81e3343af3e6933986e376bbd1a66cdc0fb73..635ae820fee964dc6f318548714a14714730514b 100644
--- a/source/libs/stream/src/streamExec.c
+++ b/source/libs/stream/src/streamExec.c
@@ -74,63 +74,62 @@ static int32_t streamTaskExecImpl(SStreamTask* pTask, void* data, SArray* pRes)
 }
 
 static SArray* streamExecForQall(SStreamTask* pTask, SArray* pRes) {
+  int32_t cnt = 0;
+  void*   data = NULL;
   while (1) {
-    int32_t cnt = 0;
-    void*   data = NULL;
-    while (1) {
-      SStreamQueueItem* qItem = streamQueueNextItem(pTask->inputQueue);
-      if (qItem == NULL) {
-        qDebug("stream exec over, queue empty");
+    SStreamQueueItem* qItem = streamQueueNextItem(pTask->inputQueue);
+    if (qItem == NULL) {
+      qDebug("stream exec over, queue empty");
+      break;
+    }
+    if (data == NULL) {
+      data = qItem;
+      streamQueueProcessSuccess(pTask->inputQueue);
+      continue;
+    } else {
+      if (streamAppendQueueItem(data, qItem) < 0) {
+        streamQueueProcessFail(pTask->inputQueue);
         break;
-      }
-      if (data == NULL) {
-        data = qItem;
-        streamQueueProcessSuccess(pTask->inputQueue);
-        continue;
       } else {
-        if (streamAppendQueueItem(data, qItem) < 0) {
-          streamQueueProcessFail(pTask->inputQueue);
-          break;
-        } else {
-          cnt++;
-          streamQueueProcessSuccess(pTask->inputQueue);
-          taosArrayDestroy(((SStreamDataBlock*)qItem)->blocks);
-          taosFreeQitem(qItem);
-        }
+        cnt++;
+        streamQueueProcessSuccess(pTask->inputQueue);
+        taosArrayDestroy(((SStreamDataBlock*)qItem)->blocks);
+        taosFreeQitem(qItem);
       }
     }
-    if (data == NULL) break;
+  }
+  if (pTask->taskStatus == TASK_STATUS__DROPPING) {
+    if (data) streamFreeQitem(data);
+    taosArrayDestroyEx(pRes, (FDelete)tDeleteSSDataBlock);
+    return NULL;
+  }
 
-    qDebug("stream task %d exec begin, batch msg: %d", pTask->taskId, cnt);
-    streamTaskExecImpl(pTask, data, pRes);
-    qDebug("stream task %d exec end", pTask->taskId);
+  if (data == NULL) return pRes;
 
-    if (pTask->taskStatus == TASK_STATUS__DROPPING) {
-      taosArrayDestroyEx(pRes, (FDelete)tDeleteSSDataBlock);
+  qDebug("stream task %d exec begin, msg batch: %d", pTask->taskId, cnt);
+  streamTaskExecImpl(pTask, data, pRes);
+  qDebug("stream task %d exec end", pTask->taskId);
+
+  if (taosArrayGetSize(pRes) != 0) {
+    SStreamDataBlock* qRes = taosAllocateQitem(sizeof(SStreamDataBlock), DEF_QITEM);
+    if (qRes == NULL) {
+      streamQueueProcessFail(pTask->inputQueue);
+      taosArrayDestroy(pRes);
       return NULL;
     }
-
-    if (taosArrayGetSize(pRes) != 0) {
-      SStreamDataBlock* qRes = taosAllocateQitem(sizeof(SStreamDataBlock), DEF_QITEM);
-      if (qRes == NULL) {
-        streamQueueProcessFail(pTask->inputQueue);
-        taosArrayDestroy(pRes);
-        return NULL;
-      }
-      qRes->type = STREAM_INPUT__DATA_BLOCK;
-      qRes->blocks = pRes;
-      if (streamTaskOutput(pTask, qRes) < 0) {
-        /*streamQueueProcessFail(pTask->inputQueue);*/
-        taosArrayDestroyEx(pRes, (FDelete)tDeleteSSDataBlock);
-        taosFreeQitem(qRes);
-        return NULL;
-      }
-      /*streamQueueProcessSuccess(pTask->inputQueue);*/
-      pRes = taosArrayInit(0, sizeof(SSDataBlock));
+    qRes->type = STREAM_INPUT__DATA_BLOCK;
+    qRes->blocks = pRes;
+    if (streamTaskOutput(pTask, qRes) < 0) {
+      /*streamQueueProcessFail(pTask->inputQueue);*/
+      taosArrayDestroyEx(pRes, (FDelete)tDeleteSSDataBlock);
+      taosFreeQitem(qRes);
+      return NULL;
     }
-
-    streamFreeQitem(data);
+    /*streamQueueProcessSuccess(pTask->inputQueue);*/
+    pRes = taosArrayInit(0, sizeof(SSDataBlock));
   }
+
+  streamFreeQitem(data);
   return pRes;
 }
 
@@ -171,6 +170,11 @@ int32_t streamExec(SStreamTask* pTask, SMsgCb* pMsgCb) {
   }
 FAIL:
   if (pRes) taosArrayDestroy(pRes);
-  atomic_store_8(&pTask->execStatus, TASK_EXEC_STATUS__IDLE);
-  return -1;
+  if (pTask->taskStatus == TASK_STATUS__DROPPING) {
+    tFreeSStreamTask(pTask);
+    return 0;
+  } else {
+    atomic_store_8(&pTask->execStatus, TASK_EXEC_STATUS__IDLE);
+    return -1;
+  }
 }
diff --git a/source/libs/stream/src/streamTask.c b/source/libs/stream/src/streamTask.c
index 97aa182dc96eeb402316bb9d54df576312d461e3..7488c009bdc9436621c136c007da12f3ee533cac 100644
--- a/source/libs/stream/src/streamTask.c
+++ b/source/libs/stream/src/streamTask.c
@@ -163,6 +163,6 @@ void tFreeSStreamTask(SStreamTask* pTask) {
   streamQueueClose(pTask->inputQueue);
   streamQueueClose(pTask->outputQueue);
   if (pTask->exec.qmsg) taosMemoryFree(pTask->exec.qmsg);
-  qDestroyTask(pTask->exec.executor);
+  if (pTask->exec.executor) qDestroyTask(pTask->exec.executor);
   taosMemoryFree(pTask);
 }