diff --git a/examples/c/stream_demo.c b/examples/c/stream_demo.c
index 943fcbdb5329c4c53e9f4c663497419091f8b4d2..ab59fa5e474cb8e6dde123b18c8cc265570aeeaa 100644
--- a/examples/c/stream_demo.c
+++ b/examples/c/stream_demo.c
@@ -82,7 +82,8 @@ int32_t create_stream() {
   /*const char* sql = "select sum(k) from tu1 interval(10m)";*/
   /*pRes = tmq_create_stream(pConn, "stream1", "out1", sql);*/
   pRes = taos_query(
-      pConn, "create stream stream1 trigger at_once into outstb as select _wstartts, sum(k) from st1 interval(10m)");
+      pConn,
+      "create stream stream1 trigger max_delay 10s into outstb as select _wstartts, sum(k) from st1 interval(10m)");
   if (taos_errno(pRes) != 0) {
     printf("failed to create stream stream1, reason:%s\n", taos_errstr(pRes));
     return -1;
diff --git a/include/libs/executor/executor.h b/include/libs/executor/executor.h
index 288248422b8288b98d8f0fccaef040186294cb76..3f05c27453d89eaccd845c859064b579b5d8538f 100644
--- a/include/libs/executor/executor.h
+++ b/include/libs/executor/executor.h
@@ -38,8 +38,10 @@ typedef struct SReadHandle {
   SMsgCb* pMsgCb;
 } SReadHandle;
 
-#define STREAM_DATA_TYPE_SUBMIT_BLOCK 0x1
-#define STREAM_DATA_TYPE_SSDATA_BLOCK 0x2
+enum {
+  STREAM_DATA_TYPE_SUBMIT_BLOCK = 1,
+  STREAM_DATA_TYPE_SSDATA_BLOCK = 2,
+};
 
 typedef enum {
   OPTR_EXEC_MODEL_BATCH = 0x1,
@@ -102,7 +104,8 @@ int32_t qCreateExecTask(SReadHandle* readHandle, int32_t vgId, uint64_t taskId,
  * @param tversion
  * @return
  */
-int32_t qGetQueriedTableSchemaVersion(qTaskInfo_t tinfo, char* dbName, char* tableName, int32_t* sversion, int32_t* tversion);
+int32_t qGetQueriedTableSchemaVersion(qTaskInfo_t tinfo, char* dbName, char* tableName, int32_t* sversion,
+                                      int32_t* tversion);
 
 /**
  * The main task execution function, including query on both table and multiple tables,
diff --git a/include/libs/stream/tstream.h b/include/libs/stream/tstream.h
index 960794792ba408c565b5a7430c5a412b1b60cb4c..2c9d66a828e658cd286d2e5bf4edcc28d7ea37a9 100644
--- a/include/libs/stream/tstream.h
+++ b/include/libs/stream/tstream.h
@@ -58,6 +58,7 @@ enum {
 enum {
   STREAM_INPUT__DATA_SUBMIT = 1,
   STREAM_INPUT__DATA_BLOCK,
+  STREAM_INPUT__TRIGGER,
   STREAM_INPUT__CHECKPOINT,
 };
 
@@ -85,6 +86,11 @@ typedef struct {
   int8_t type;
 } SStreamCheckpoint;
 
+typedef struct {
+  int8_t       type;
+  SSDataBlock* pBlock;
+} SStreamTrigger;
+
 enum {
   STREAM_QUEUE__SUCESS = 1,
   STREAM_QUEUE__FAILED,
@@ -98,6 +104,9 @@ typedef struct {
   int8_t      status;
 } SStreamQueue;
 
+int32_t streamInit();
+void    streamCleanUp();
+
 SStreamQueue* streamQueueOpen();
 void          streamQueueClose(SStreamQueue* queue);
 
@@ -220,6 +229,11 @@ enum {
   TASK_INPUT_TYPE__DATA_BLOCK,
 };
 
+enum {
+  TASK_TRIGGER_STATUS__IN_ACTIVE = 1,
+  TASK_TRIGGER_STATUS__ACTIVE,
+};
+
 struct SStreamTask {
   int64_t streamId;
   int32_t taskId;
@@ -262,8 +276,16 @@ struct SStreamTask {
   SStreamQueue* inputQueue;
   SStreamQueue* outputQueue;
 
+  // trigger
+  int8_t  triggerStatus;
+  int64_t triggerParam;
+  void*   timer;
+
   // application storage
   // void* ahandle;
+
+  // msg handle
+  SMsgCb* pMsgCb;
 };
 
 SStreamTask* tNewSStreamTask(int64_t streamId);
@@ -292,6 +314,13 @@ static FORCE_INLINE int32_t streamTaskInput(SStreamTask* pTask, SStreamQueueItem
     taosWriteQitem(pTask->inputQueue->queue, pItem);
   } else if (pItem->type == STREAM_INPUT__CHECKPOINT) {
     taosWriteQitem(pTask->inputQueue->queue, pItem);
+  } else if (pItem->type == STREAM_INPUT__TRIGGER) {
+    taosWriteQitem(pTask->inputQueue->queue, pItem);
+  }
+
+  if (pItem->type != STREAM_INPUT__TRIGGER && pItem->type != STREAM_INPUT__CHECKPOINT && pTask->triggerParam != 0 &&
+      pTask->triggerStatus == TASK_TRIGGER_STATUS__IN_ACTIVE) {
+    atomic_store_8(&pTask->triggerStatus, TASK_TRIGGER_STATUS__ACTIVE);
   }
 
   // TODO: back pressure
@@ -370,7 +399,8 @@ typedef struct {
 
 int32_t tDecodeStreamDispatchReq(SDecoder* pDecoder, SStreamDispatchReq* pReq);
 
-int32_t streamTriggerByWrite(SStreamTask* pTask, int32_t vgId, SMsgCb* pMsgCb);
+int32_t streamLaunchByWrite(SStreamTask* pTask, int32_t vgId, SMsgCb* pMsgCb);
+int32_t streamSetupTrigger(SStreamTask* pTask);
 
 int32_t streamTaskRun(SStreamTask* pTask);
 
diff --git a/source/client/src/tmq.c b/source/client/src/tmq.c
index 10c6c3623ad219625b688a9b1dce5097d337f6b9..dd900e6045294c8d6d6eedee733a682758a24cb9 100644
--- a/source/client/src/tmq.c
+++ b/source/client/src/tmq.c
@@ -992,6 +992,90 @@ CREATE_MSG_FAIL:
   return -1;
 }
 
+bool tmqUpdateEp2(tmq_t* tmq, int32_t epoch, SMqAskEpRsp* pRsp) {
+  bool set = false;
+
+  int32_t topicNumGet = taosArrayGetSize(pRsp->topics);
+  char    vgKey[TSDB_TOPIC_FNAME_LEN + 22];
+  tscDebug("consumer %ld update ep epoch %d to epoch %d, topic num: %d", tmq->consumerId, tmq->epoch, epoch,
+           topicNumGet);
+
+  SArray* newTopics = taosArrayInit(topicNumGet, sizeof(SMqClientTopic));
+  if (newTopics == NULL) {
+    return false;
+  }
+
+  SHashObj* pHash = taosHashInit(64, MurmurHash3_32, false, HASH_NO_LOCK);
+  if (pHash == NULL) {
+    taosArrayDestroy(newTopics);
+    return false;
+  }
+  int32_t topicNumCur = taosArrayGetSize(tmq->clientTopics);
+  for (int32_t i = 0; i < topicNumCur; i++) {
+    // find old topic
+    SMqClientTopic* pTopicCur = taosArrayGet(tmq->clientTopics, i);
+    if (pTopicCur->vgs) {
+      int32_t vgNumCur = taosArrayGetSize(pTopicCur->vgs);
+      tscDebug("consumer %ld new vg num: %d", tmq->consumerId, vgNumCur);
+      if (vgNumCur == 0) break;
+      for (int32_t j = 0; j < vgNumCur; j++) {
+        SMqClientVg* pVgCur = taosArrayGet(pTopicCur->vgs, j);
+        sprintf(vgKey, "%s:%d", pTopicCur->topicName, pVgCur->vgId);
+        tscDebug("consumer %ld epoch %d vg %d build %s", tmq->consumerId, epoch, pVgCur->vgId, vgKey);
+        taosHashPut(pHash, vgKey, strlen(vgKey), &pVgCur->currentOffset, sizeof(int64_t));
+      }
+      break;
+    }
+  }
+
+  for (int32_t i = 0; i < topicNumGet; i++) {
+    SMqClientTopic topic = {0};
+    SMqSubTopicEp* pTopicEp = taosArrayGet(pRsp->topics, i);
+    topic.schema = pTopicEp->schema;
+    taosHashClear(pHash);
+    topic.topicName = strdup(pTopicEp->topic);
+    tstrncpy(topic.db, pTopicEp->db, TSDB_DB_FNAME_LEN);
+
+    tscDebug("consumer %ld update topic: %s", tmq->consumerId, topic.topicName);
+
+    int32_t vgNumGet = taosArrayGetSize(pTopicEp->vgs);
+    topic.vgs = taosArrayInit(vgNumGet, sizeof(SMqClientVg));
+    for (int32_t j = 0; j < vgNumGet; j++) {
+      SMqSubVgEp* pVgEp = taosArrayGet(pTopicEp->vgs, j);
+      sprintf(vgKey, "%s:%d", topic.topicName, pVgEp->vgId);
+      int64_t* pOffset = taosHashGet(pHash, vgKey, strlen(vgKey));
+      int64_t  offset = tmq->resetOffsetCfg;
+      if (pOffset != NULL) {
+        offset = *pOffset;
+      }
+
+      tscDebug("consumer %ld(epoch %d) offset of vg %d updated to %ld", tmq->consumerId, epoch, pVgEp->vgId, offset);
+      SMqClientVg clientVg = {
+          .pollCnt = 0,
+          .currentOffset = offset,
+          .vgId = pVgEp->vgId,
+          .epSet = pVgEp->epSet,
+          .vgStatus = TMQ_VG_STATUS__IDLE,
+          .vgSkipCnt = 0,
+      };
+      taosArrayPush(topic.vgs, &clientVg);
+      set = true;
+    }
+    taosArrayPush(newTopics, &topic);
+  }
+  if (tmq->clientTopics) taosArrayDestroy(tmq->clientTopics);
+  taosHashCleanup(pHash);
+  tmq->clientTopics = newTopics;
+
+  if (taosArrayGetSize(tmq->clientTopics) == 0)
+    atomic_store_8(&tmq->status, TMQ_CONSUMER_STATUS__NO_TOPIC);
+  else
+    atomic_store_8(&tmq->status, TMQ_CONSUMER_STATUS__READY);
+
+  atomic_store_32(&tmq->epoch, epoch);
+  return set;
+}
+
 bool tmqUpdateEp(tmq_t* tmq, int32_t epoch, SMqAskEpRsp* pRsp) {
   /*printf("call update ep %d\n", epoch);*/
   bool    set = false;
diff --git a/source/dnode/mnode/impl/inc/mndDef.h b/source/dnode/mnode/impl/inc/mndDef.h
index 6dd5d1622c2e00c8b35b6e7bdb82d8c11b40aa1a..2e543149c075225bd1733918f5f76e76d1ffe32c 100644
--- a/source/dnode/mnode/impl/inc/mndDef.h
+++ b/source/dnode/mnode/impl/inc/mndDef.h
@@ -554,8 +554,8 @@ typedef struct {
   SVgObj         fixedSinkVg;
   int64_t        smaId;  // 0 for unused
   int8_t         trigger;
-  int32_t        triggerParam;
-  int64_t        waterMark;
+  int64_t        triggerParam;
+  int64_t        watermark;
   char*          sql;
   char*          physicalPlan;
   SArray*        tasks;  // SArray<SArray<SStreamTask>>
diff --git a/source/dnode/mnode/impl/inc/mndStream.h b/source/dnode/mnode/impl/inc/mndStream.h
index 15cd9fa0439a9b7b8a411adf028645caea27aecc..b5d22cb7a5ba931ccbf5c5986ec41d7cbf5e6e5e 100644
--- a/source/dnode/mnode/impl/inc/mndStream.h
+++ b/source/dnode/mnode/impl/inc/mndStream.h
@@ -31,7 +31,7 @@ void        mndReleaseStream(SMnode *pMnode, SStreamObj *pStream);
 SSdbRaw *mndStreamActionEncode(SStreamObj *pStream);
 SSdbRow *mndStreamActionDecode(SSdbRaw *pRaw);
 
-int32_t mndAddStreamToTrans(SMnode *pMnode, SStreamObj *pStream, const char *ast, int8_t triggerType, int64_t watermark, STrans *pTrans);
+int32_t mndAddStreamToTrans(SMnode *pMnode, SStreamObj *pStream, const char *ast, STrans *pTrans);
 
 #ifdef __cplusplus
 }
diff --git a/source/dnode/mnode/impl/src/mndDef.c b/source/dnode/mnode/impl/src/mndDef.c
index 1e2c61ff89025d34a828a366f7d202267112e1f8..6eac91bb43691ac8698746c450d5c22b0f25f3df 100644
--- a/source/dnode/mnode/impl/src/mndDef.c
+++ b/source/dnode/mnode/impl/src/mndDef.c
@@ -33,8 +33,8 @@ int32_t tEncodeSStreamObj(SEncoder *pEncoder, const SStreamObj *pObj) {
   if (tEncodeI8(pEncoder, pObj->status) < 0) return -1;
   if (tEncodeI8(pEncoder, pObj->createdBy) < 0) return -1;
   if (tEncodeI8(pEncoder, pObj->trigger) < 0) return -1;
-  if (tEncodeI32(pEncoder, pObj->triggerParam) < 0) return -1;
-  if (tEncodeI64(pEncoder, pObj->waterMark) < 0) return -1;
+  if (tEncodeI64(pEncoder, pObj->triggerParam) < 0) return -1;
+  if (tEncodeI64(pEncoder, pObj->watermark) < 0) return -1;
   if (tEncodeI32(pEncoder, pObj->fixedSinkVgId) < 0) return -1;
   if (tEncodeI64(pEncoder, pObj->smaId) < 0) return -1;
   if (tEncodeCStr(pEncoder, pObj->sql) < 0) return -1;
@@ -85,8 +85,8 @@ int32_t tDecodeSStreamObj(SDecoder *pDecoder, SStreamObj *pObj) {
   if (tDecodeI8(pDecoder, &pObj->status) < 0) return -1;
   if (tDecodeI8(pDecoder, &pObj->createdBy) < 0) return -1;
   if (tDecodeI8(pDecoder, &pObj->trigger) < 0) return -1;
-  if (tDecodeI32(pDecoder, &pObj->triggerParam) < 0) return -1;
-  if (tDecodeI64(pDecoder, &pObj->waterMark) < 0) return -1;
+  if (tDecodeI64(pDecoder, &pObj->triggerParam) < 0) return -1;
+  if (tDecodeI64(pDecoder, &pObj->watermark) < 0) return -1;
   if (tDecodeI32(pDecoder, &pObj->fixedSinkVgId) < 0) return -1;
   if (tDecodeI64(pDecoder, &pObj->smaId) < 0) return -1;
   if (tDecodeCStrAlloc(pDecoder, &pObj->sql) < 0) return -1;
diff --git a/source/dnode/mnode/impl/src/mndScheduler.c b/source/dnode/mnode/impl/src/mndScheduler.c
index a3b7754a4edac3d6c1d9d122b2d4c794096cfddf..5b745f3ceaed71642d2cc8c0798fa44f6bb160a5 100644
--- a/source/dnode/mnode/impl/src/mndScheduler.c
+++ b/source/dnode/mnode/impl/src/mndScheduler.c
@@ -387,6 +387,9 @@ int32_t mndScheduleStream(SMnode* pMnode, STrans* pTrans, SStreamObj* pStream) {
       // input
       pFinalTask->inputType = TASK_INPUT_TYPE__DATA_BLOCK;
 
+      // trigger
+      pFinalTask->triggerParam = pStream->triggerParam;
+
       // dispatch
       if (mndAddDispatcherToInnerTask(pMnode, pTrans, pStream, pFinalTask) < 0) {
         qDestroyQueryPlan(pPlan);
diff --git a/source/dnode/mnode/impl/src/mndSma.c b/source/dnode/mnode/impl/src/mndSma.c
index a14eb78ffefafb44fb3a498bb2bb947a11073e5c..003afb4fa0998dd474af07db52013df0f8b60c81 100644
--- a/source/dnode/mnode/impl/src/mndSma.c
+++ b/source/dnode/mnode/impl/src/mndSma.c
@@ -561,6 +561,8 @@ static int32_t mndCreateSma(SMnode *pMnode, SRpcMsg *pReq, SMCreateSmaReq *pCrea
   streamObj.sql = pCreate->sql;
   streamObj.createdBy = STREAM_CREATED_BY__SMA;
   streamObj.smaId = smaObj.uid;
+  streamObj.watermark = 0;
+  streamObj.trigger = STREAM_TRIGGER_AT_ONCE;
 
   if (mndAllocSmaVgroup(pMnode, pDb, &streamObj.fixedSinkVg) != 0) {
     mError("sma:%s, failed to create since %s", smaObj.name, terrstr());
@@ -583,7 +585,7 @@ static int32_t mndCreateSma(SMnode *pMnode, SRpcMsg *pReq, SMCreateSmaReq *pCrea
   if (mndSetUpdateSmaStbCommitLogs(pMnode, pTrans, pStb) != 0) goto _OVER;
   if (mndSetCreateSmaRedoActions(pMnode, pTrans, pDb, &smaObj) != 0) goto _OVER;
   if (mndSetCreateSmaVgroupRedoActions(pMnode, pTrans, pDb, &streamObj.fixedSinkVg, &smaObj) != 0) goto _OVER;
-  if (mndAddStreamToTrans(pMnode, &streamObj, pCreate->ast, STREAM_TRIGGER_AT_ONCE, 0, pTrans) != 0) goto _OVER;
+  if (mndAddStreamToTrans(pMnode, &streamObj, pCreate->ast, pTrans) != 0) goto _OVER;
   if (mndTransPrepare(pMnode, pTrans) != 0) goto _OVER;
 
   code = 0;
@@ -1012,7 +1014,6 @@ int32_t mndGetTableSma(SMnode *pMnode, char *tbFName, STableIndexRsp *rsp, bool
   rsp->suid = pStb->uid;
   rsp->version = pStb->smaVer;
   mndReleaseStb(pMnode, pStb);
-  
 
   while (1) {
     pIter = sdbFetch(pSdb, SDB_SMA, pIter, (void **)&pSma);
diff --git a/source/dnode/mnode/impl/src/mndStream.c b/source/dnode/mnode/impl/src/mndStream.c
index 96d199fcb6e6a79b61f58ce1e96f7c2e2aea2ea8..4a7da8f2d142aa5eb664b4b7b024e0e64bd92628 100644
--- a/source/dnode/mnode/impl/src/mndStream.c
+++ b/source/dnode/mnode/impl/src/mndStream.c
@@ -235,16 +235,15 @@ static int32_t mndStreamGetPlanString(const char *ast, int8_t triggerType, int64
   }
 
   if (TSDB_CODE_SUCCESS == code) {
-    code = nodesNodeToString((SNode*)pPlan, false, pStr, NULL);
+    code = nodesNodeToString((SNode *)pPlan, false, pStr, NULL);
   }
   nodesDestroyNode(pAst);
-  nodesDestroyNode((SNode*)pPlan);
+  nodesDestroyNode((SNode *)pPlan);
   terrno = code;
   return code;
 }
 
-int32_t mndAddStreamToTrans(SMnode *pMnode, SStreamObj *pStream, const char *ast, int8_t triggerType, int64_t watermark,
-                            STrans *pTrans) {
+int32_t mndAddStreamToTrans(SMnode *pMnode, SStreamObj *pStream, const char *ast, STrans *pTrans) {
   SNode *pAst = NULL;
 
   if (nodesStringToNode(ast, &pAst) < 0) {
@@ -258,7 +257,6 @@ int32_t mndAddStreamToTrans(SMnode *pMnode, SStreamObj *pStream, const char *ast
   // free
   nodesDestroyNode(pAst);
 
-
 #if 0
   printf("|");
   for (int i = 0; i < pStream->outputSchema.nCols; i++) {
@@ -268,7 +266,7 @@ int32_t mndAddStreamToTrans(SMnode *pMnode, SStreamObj *pStream, const char *ast
 
 #endif
 
-  if (TSDB_CODE_SUCCESS != mndStreamGetPlanString(ast, triggerType, watermark, &pStream->physicalPlan)) {
+  if (TSDB_CODE_SUCCESS != mndStreamGetPlanString(ast, pStream->trigger, pStream->watermark, &pStream->physicalPlan)) {
     mError("topic:%s, failed to get plan since %s", pStream->name, terrstr());
     return -1;
   }
@@ -391,7 +389,8 @@ static int32_t mndCreateStream(SMnode *pMnode, SRpcMsg *pReq, SCMCreateStreamReq
   streamObj.smaId = 0;
   /*streamObj.physicalPlan = "";*/
   streamObj.trigger = pCreate->triggerType;
-  streamObj.waterMark = pCreate->watermark;
+  streamObj.watermark = pCreate->watermark;
+  streamObj.triggerParam = pCreate->maxDelay;
 
   if (streamObj.targetSTbName[0]) {
     pDb = mndAcquireDbByStb(pMnode, streamObj.targetSTbName);
@@ -409,7 +408,7 @@ static int32_t mndCreateStream(SMnode *pMnode, SRpcMsg *pReq, SCMCreateStreamReq
   }
   mDebug("trans:%d, used to create stream:%s", pTrans->id, pCreate->name);
 
-  if (mndAddStreamToTrans(pMnode, &streamObj, pCreate->ast, pCreate->triggerType, pCreate->watermark, pTrans) != 0) {
+  if (mndAddStreamToTrans(pMnode, &streamObj, pCreate->ast, pTrans) != 0) {
     mError("trans:%d, failed to add stream since %s", pTrans->id, terrstr());
     mndTransDrop(pTrans);
     return -1;
@@ -566,7 +565,7 @@ static int32_t mndRetrieveStream(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *pB
     colDataAppend(pColInfo, numOfRows, (const char *)&pStream->targetSTbName, true);
 
     pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
-    colDataAppend(pColInfo, numOfRows, (const char *)&pStream->waterMark, false);
+    colDataAppend(pColInfo, numOfRows, (const char *)&pStream->watermark, false);
 
     pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
     colDataAppend(pColInfo, numOfRows, (const char *)&pStream->trigger, false);
diff --git a/source/dnode/vnode/src/tq/tq.c b/source/dnode/vnode/src/tq/tq.c
index 9f34ae39c06fe284d4c2402fea04b703f70adf4c..7d2dfeeba54a6438d3994cd5a9957a1345f53d20 100644
--- a/source/dnode/vnode/src/tq/tq.c
+++ b/source/dnode/vnode/src/tq/tq.c
@@ -375,6 +375,8 @@ int32_t tqProcessTaskDeploy(STQ* pTq, char* msg, int32_t msgLen) {
 
   if (pTask->inputQueue == NULL || pTask->outputQueue == NULL) goto FAIL;
 
+  pTask->pMsgCb = &pTq->pVnode->msgCb;
+
   // exec
   if (pTask->execType != TASK_EXEC__NONE) {
     // expand runners
@@ -406,9 +408,12 @@ int32_t tqProcessTaskDeploy(STQ* pTq, char* msg, int32_t msgLen) {
         tdGetSTSChemaFromSSChema(&pTask->tbSink.pSchemaWrapper->pSchema, pTask->tbSink.pSchemaWrapper->nCols);
     ASSERT(pTask->tbSink.pTSchema);
   }
+
+  streamSetupTrigger(pTask);
+
   tqInfo("deploy stream task id %d child id %d on vg %d", pTask->taskId, pTask->childId, pTq->pVnode->config.vgId);
 
-  taosHashPut(pTq->pStreamTasks, &pTask->taskId, sizeof(int32_t), pTask, sizeof(SStreamTask));
+  taosHashPut(pTq->pStreamTasks, &pTask->taskId, sizeof(int32_t), &pTask, sizeof(void*));
 
   return 0;
 FAIL:
@@ -431,7 +436,7 @@ int32_t tqProcessStreamTrigger(STQ* pTq, SSubmitReq* pReq) {
   while (1) {
     pIter = taosHashIterate(pTq->pStreamTasks, pIter);
     if (pIter == NULL) break;
-    SStreamTask* pTask = (SStreamTask*)pIter;
+    SStreamTask* pTask = *(SStreamTask**)pIter;
     if (pTask->inputType != STREAM_INPUT__DATA_SUBMIT) continue;
 
     if (!failed) {
@@ -439,7 +444,7 @@ int32_t tqProcessStreamTrigger(STQ* pTq, SSubmitReq* pReq) {
         continue;
       }
 
-      if (streamTriggerByWrite(pTask, pTq->pVnode->config.vgId, &pTq->pVnode->msgCb) < 0) {
+      if (streamLaunchByWrite(pTask, pTq->pVnode->config.vgId, &pTq->pVnode->msgCb) < 0) {
         continue;
       }
     } else {
@@ -459,7 +464,7 @@ int32_t tqProcessTaskRunReq(STQ* pTq, SRpcMsg* pMsg) {
   //
   SStreamTaskRunReq* pReq = pMsg->pCont;
   int32_t            taskId = pReq->taskId;
-  SStreamTask*       pTask = taosHashGet(pTq->pStreamTasks, &taskId, sizeof(int32_t));
+  SStreamTask*       pTask = *(SStreamTask**)taosHashGet(pTq->pStreamTasks, &taskId, sizeof(int32_t));
   streamTaskProcessRunReq(pTask, &pTq->pVnode->msgCb);
   return 0;
 }
@@ -473,7 +478,7 @@ int32_t tqProcessTaskDispatchReq(STQ* pTq, SRpcMsg* pMsg) {
   tDecoderInit(&decoder, msgBody, msgLen);
   tDecodeStreamDispatchReq(&decoder, &req);
   int32_t      taskId = req.taskId;
-  SStreamTask* pTask = taosHashGet(pTq->pStreamTasks, &taskId, sizeof(int32_t));
+  SStreamTask* pTask = *(SStreamTask**)taosHashGet(pTq->pStreamTasks, &taskId, sizeof(int32_t));
   SRpcMsg      rsp = {
            .info = pMsg->info,
            .code = 0,
@@ -485,7 +490,7 @@ int32_t tqProcessTaskDispatchReq(STQ* pTq, SRpcMsg* pMsg) {
 int32_t tqProcessTaskRecoverReq(STQ* pTq, SRpcMsg* pMsg) {
   SStreamTaskRecoverReq* pReq = pMsg->pCont;
   int32_t                taskId = pReq->taskId;
-  SStreamTask*           pTask = taosHashGet(pTq->pStreamTasks, &taskId, sizeof(int32_t));
+  SStreamTask*           pTask = *(SStreamTask**)taosHashGet(pTq->pStreamTasks, &taskId, sizeof(int32_t));
   streamProcessRecoverReq(pTask, &pTq->pVnode->msgCb, pReq, pMsg);
   return 0;
 }
@@ -493,7 +498,7 @@ int32_t tqProcessTaskRecoverReq(STQ* pTq, SRpcMsg* pMsg) {
 int32_t tqProcessTaskDispatchRsp(STQ* pTq, SRpcMsg* pMsg) {
   SStreamDispatchRsp* pRsp = POINTER_SHIFT(pMsg->pCont, sizeof(SMsgHead));
   int32_t             taskId = pRsp->taskId;
-  SStreamTask*        pTask = taosHashGet(pTq->pStreamTasks, &taskId, sizeof(int32_t));
+  SStreamTask*        pTask = *(SStreamTask**)taosHashGet(pTq->pStreamTasks, &taskId, sizeof(int32_t));
   streamProcessDispatchRsp(pTask, &pTq->pVnode->msgCb, pRsp);
   return 0;
 }
@@ -501,7 +506,7 @@ int32_t tqProcessTaskDispatchRsp(STQ* pTq, SRpcMsg* pMsg) {
 int32_t tqProcessTaskRecoverRsp(STQ* pTq, SRpcMsg* pMsg) {
   SStreamTaskRecoverRsp* pRsp = pMsg->pCont;
   int32_t                taskId = pRsp->taskId;
-  SStreamTask*           pTask = taosHashGet(pTq->pStreamTasks, &taskId, sizeof(int32_t));
+  SStreamTask*           pTask = *(SStreamTask**)taosHashGet(pTq->pStreamTasks, &taskId, sizeof(int32_t));
   streamProcessRecoverRsp(pTask, pRsp);
   return 0;
 }
diff --git a/source/libs/executor/src/executor.c b/source/libs/executor/src/executor.c
index fd62849e56805c22472a5ea438140ec655e20df0..bebfc75f176b147c5bf9af517015a13d10740466 100644
--- a/source/libs/executor/src/executor.c
+++ b/source/libs/executor/src/executor.c
@@ -19,7 +19,8 @@
 #include "tdatablock.h"
 #include "vnode.h"
 
-static int32_t doSetStreamBlock(SOperatorInfo* pOperator, void* input, size_t numOfBlocks, int32_t type, bool assignUid, char* id) {
+static int32_t doSetStreamBlock(SOperatorInfo* pOperator, void* input, size_t numOfBlocks, int32_t type, bool assignUid,
+                                char* id) {
   ASSERT(pOperator != NULL);
   if (pOperator->operatorType != QUERY_NODE_PHYSICAL_PLAN_STREAM_SCAN) {
     if (pOperator->numOfDownstream == 0) {
@@ -43,6 +44,7 @@ static int32_t doSetStreamBlock(SOperatorInfo* pOperator, void* input, size_t nu
     if (pInfo->blockType == 0) {
       pInfo->blockType = type;
     } else if (pInfo->blockType != type) {
+      ASSERT(0);
       return TSDB_CODE_QRY_APP_ERROR;
     }
 
@@ -51,7 +53,7 @@ static int32_t doSetStreamBlock(SOperatorInfo* pOperator, void* input, size_t nu
         qError("submit msg messed up when initing stream block, %s" PRIx64, id);
         return TSDB_CODE_QRY_APP_ERROR;
       }
-    } else {
+    } else if (type == STREAM_DATA_TYPE_SSDATA_BLOCK) {
       for (int32_t i = 0; i < numOfBlocks; ++i) {
         SSDataBlock* pDataBlock = &((SSDataBlock*)input)[i];
 
@@ -62,6 +64,8 @@ static int32_t doSetStreamBlock(SOperatorInfo* pOperator, void* input, size_t nu
         taosArrayAddAll(p->pDataBlock, pDataBlock->pDataBlock);
         taosArrayPush(pInfo->pBlockLists, &p);
       }
+    } else {
+      ASSERT(0);
     }
 
     return TSDB_CODE_SUCCESS;
@@ -83,7 +87,8 @@ int32_t qSetMultiStreamInput(qTaskInfo_t tinfo, const void* pBlocks, size_t numO
 
   SExecTaskInfo* pTaskInfo = (SExecTaskInfo*)tinfo;
 
-  int32_t code = doSetStreamBlock(pTaskInfo->pRoot, (void**)pBlocks, numOfBlocks, type, assignUid, GET_TASKID(pTaskInfo));
+  int32_t code =
+      doSetStreamBlock(pTaskInfo->pRoot, (void**)pBlocks, numOfBlocks, type, assignUid, GET_TASKID(pTaskInfo));
   if (code != TSDB_CODE_SUCCESS) {
     qError("%s failed to set the stream block data", GET_TASKID(pTaskInfo));
   } else {
@@ -162,7 +167,7 @@ int32_t qUpdateQualifiedTableId(qTaskInfo_t tinfo, const SArray* tableIdList, bo
     pInfo = pInfo->pDownstream[0];
   }
 
-  int32_t code = 0;
+  int32_t               code = 0;
   SStreamBlockScanInfo* pScanInfo = pInfo->info;
   if (isAdd) {  // add new table id
     SArray* qa = filterQualifiedChildTables(pScanInfo, tableIdList);
@@ -178,9 +183,10 @@ int32_t qUpdateQualifiedTableId(qTaskInfo_t tinfo, const SArray* tableIdList, bo
   return code;
 }
 
-int32_t qGetQueriedTableSchemaVersion(qTaskInfo_t tinfo, char* dbName, char* tableName, int32_t* sversion, int32_t* tversion) {
+int32_t qGetQueriedTableSchemaVersion(qTaskInfo_t tinfo, char* dbName, char* tableName, int32_t* sversion,
+                                      int32_t* tversion) {
   ASSERT(tinfo != NULL && dbName != NULL && tableName != NULL);
-  SExecTaskInfo* pTaskInfo = (SExecTaskInfo*) tinfo;
+  SExecTaskInfo* pTaskInfo = (SExecTaskInfo*)tinfo;
 
   *sversion = pTaskInfo->schemaVer.sversion;
   *tversion = pTaskInfo->schemaVer.tversion;
@@ -196,4 +202,4 @@ int32_t qGetQueriedTableSchemaVersion(qTaskInfo_t tinfo, char* dbName, char* tab
   }
 
   return 0;
-}
\ No newline at end of file
+}
diff --git a/source/libs/function/src/builtins.c b/source/libs/function/src/builtins.c
index 833f6db0c30ccadf4bc0342a5873cdd22a21a9b3..62a0c663b67972d4beed03fb52753cdf0cce068f 100644
--- a/source/libs/function/src/builtins.c
+++ b/source/libs/function/src/builtins.c
@@ -1682,7 +1682,7 @@ const SBuiltinFuncDefinition funcMgtBuiltins[] = {
   {
     .name = "top",
     .type = FUNCTION_TYPE_TOP,
-    .classification = FUNC_MGT_AGG_FUNC | FUNC_MGT_SELECT_FUNC | FUNC_MGT_INDEFINITE_ROWS_FUNC,
+    .classification = FUNC_MGT_AGG_FUNC | FUNC_MGT_SELECT_FUNC | FUNC_MGT_INDEFINITE_ROWS_FUNC | FUNC_MGT_FORBID_STREAM_FUNC,
     .translateFunc = translateTopBot,
     .getEnvFunc   = getTopBotFuncEnv,
     .initFunc     = topBotFunctionSetup,
@@ -1717,7 +1717,7 @@ const SBuiltinFuncDefinition funcMgtBuiltins[] = {
   {
     .name = "bottom",
     .type = FUNCTION_TYPE_BOTTOM,
-    .classification = FUNC_MGT_AGG_FUNC | FUNC_MGT_SELECT_FUNC | FUNC_MGT_INDEFINITE_ROWS_FUNC,
+    .classification = FUNC_MGT_AGG_FUNC | FUNC_MGT_SELECT_FUNC | FUNC_MGT_INDEFINITE_ROWS_FUNC | FUNC_MGT_FORBID_STREAM_FUNC,
     .translateFunc = translateTopBot,
     .getEnvFunc   = getTopBotFuncEnv,
     .initFunc     = topBotFunctionSetup,
diff --git a/source/libs/stream/inc/streamInc.h b/source/libs/stream/inc/streamInc.h
index 27746fff783182999b4a5780387fa48b04a564d9..8aaf4953def5d8fcb1fe354124c28f595649d8e1 100644
--- a/source/libs/stream/inc/streamInc.h
+++ b/source/libs/stream/inc/streamInc.h
@@ -23,6 +23,13 @@
 extern "C" {
 #endif
 
+typedef struct {
+  int8_t inited;
+  void*  timer;
+} SStreamGlobalEnv;
+
+static SStreamGlobalEnv streamEnv;
+
 int32_t streamExec(SStreamTask* pTask, SMsgCb* pMsgCb);
 int32_t streamDispatch(SStreamTask* pTask, SMsgCb* pMsgCb);
 int32_t streamDispatchReqToData(const SStreamDispatchReq* pReq, SStreamDataBlock* pData);
diff --git a/source/libs/stream/src/stream.c b/source/libs/stream/src/stream.c
index d3828d9ee446f31676e4b0fb4f5ec7c125682d66..6dcbfad957519fc50242da5d4b8d8d6f9add5ddc 100644
--- a/source/libs/stream/src/stream.c
+++ b/source/libs/stream/src/stream.c
@@ -14,8 +14,74 @@
  */
 
 #include "streamInc.h"
+#include "ttimer.h"
 
-int32_t streamTriggerByWrite(SStreamTask* pTask, int32_t vgId, SMsgCb* pMsgCb) {
+int32_t streamInit() {
+  int8_t old;
+  while (1) {
+    old = atomic_val_compare_exchange_8(&streamEnv.inited, 0, 2);
+    if (old != 2) break;
+  }
+
+  if (old == 0) {
+    streamEnv.timer = taosTmrInit(10000, 100, 10000, "STREAM");
+    if (streamEnv.timer == NULL) {
+      atomic_store_8(&streamEnv.inited, 0);
+      return -1;
+    }
+    atomic_store_8(&streamEnv.inited, 1);
+  }
+  return 0;
+}
+
+void streamCleanUp() {
+  int8_t old;
+  while (1) {
+    old = atomic_val_compare_exchange_8(&streamEnv.inited, 1, 2);
+    if (old != 2) break;
+  }
+
+  if (old == 1) {
+    taosTmrCleanUp(streamEnv.timer);
+    atomic_store_8(&streamEnv.inited, 0);
+  }
+}
+
+void streamTriggerByTimer(void* param, void* tmrId) {
+  SStreamTask* pTask = (void*)param;
+
+  if (atomic_load_8(&pTask->triggerStatus) == TASK_TRIGGER_STATUS__ACTIVE) {
+    SStreamTrigger* trigger = taosAllocateQitem(sizeof(SStreamTrigger), DEF_QITEM);
+    if (trigger == NULL) return;
+    trigger->type = STREAM_INPUT__TRIGGER;
+    trigger->pBlock = taosMemoryCalloc(1, sizeof(SSDataBlock));
+    if (trigger->pBlock == NULL) {
+      taosFreeQitem(trigger);
+      return;
+    }
+    trigger->pBlock->info.type = STREAM_GET_ALL;
+
+    atomic_store_8(&pTask->triggerStatus, TASK_TRIGGER_STATUS__IN_ACTIVE);
+
+    streamTaskInput(pTask, (SStreamQueueItem*)trigger);
+    streamLaunchByWrite(pTask, pTask->nodeId, pTask->pMsgCb);
+  }
+
+  taosTmrReset(streamTriggerByTimer, (int32_t)pTask->triggerParam, pTask, streamEnv.timer, &pTask->timer);
+}
+
+int32_t streamSetupTrigger(SStreamTask* pTask) {
+  if (pTask->triggerParam != 0) {
+    if (streamInit() < 0) {
+      return -1;
+    }
+    pTask->timer = taosTmrStart(streamTriggerByTimer, (int32_t)pTask->triggerParam, pTask, streamEnv.timer);
+    pTask->triggerStatus = TASK_TRIGGER_STATUS__IN_ACTIVE;
+  }
+  return 0;
+}
+
+int32_t streamLaunchByWrite(SStreamTask* pTask, int32_t vgId, SMsgCb* pMsgCb) {
   int8_t execStatus = atomic_load_8(&pTask->status);
   if (execStatus == TASK_STATUS__IDLE || execStatus == TASK_STATUS__CLOSING) {
     SStreamTaskRunReq* pRunReq = rpcMallocCont(sizeof(SStreamTaskRunReq));
diff --git a/source/libs/stream/src/streamExec.c b/source/libs/stream/src/streamExec.c
index fe1a85774316068d7691a41d7c2a4ff2ae59e20e..04428136ae614c109f173436d1f7203365bb080d 100644
--- a/source/libs/stream/src/streamExec.c
+++ b/source/libs/stream/src/streamExec.c
@@ -20,15 +20,17 @@ static int32_t streamTaskExecImpl(SStreamTask* pTask, void* data, SArray* pRes)
   void* exec = pTask->exec.executor;
 
   // set input
-  if (pTask->inputType == STREAM_INPUT__DATA_SUBMIT) {
+  SStreamQueueItem* pItem = (SStreamQueueItem*)data;
+  if (pItem->type == STREAM_INPUT__TRIGGER) {
+    SStreamTrigger* pTrigger = (SStreamTrigger*)data;
+    qSetMultiStreamInput(exec, pTrigger->pBlock, 1, STREAM_DATA_TYPE_SSDATA_BLOCK, false);
+  } else if (pItem->type == STREAM_INPUT__DATA_SUBMIT) {
     SStreamDataSubmit* pSubmit = (SStreamDataSubmit*)data;
-    ASSERT(pSubmit->type == STREAM_INPUT__DATA_SUBMIT);
-
+    ASSERT(pTask->inputType == STREAM_INPUT__DATA_SUBMIT);
     qSetStreamInput(exec, pSubmit->data, STREAM_DATA_TYPE_SUBMIT_BLOCK, false);
-  } else if (pTask->inputType == STREAM_INPUT__DATA_BLOCK) {
+  } else if (pItem->type == STREAM_INPUT__DATA_BLOCK) {
     SStreamDataBlock* pBlock = (SStreamDataBlock*)data;
-    ASSERT(pBlock->type == STREAM_INPUT__DATA_BLOCK);
-
+    ASSERT(pTask->inputType == STREAM_INPUT__DATA_BLOCK);
     SArray* blocks = pBlock->blocks;
     qSetMultiStreamInput(exec, blocks->pData, blocks->size, STREAM_DATA_TYPE_SSDATA_BLOCK, false);
   }
diff --git a/source/libs/stream/src/streamTask.c b/source/libs/stream/src/streamTask.c
index 5d8546bcb9c0b4815b8333f320479a04134e3082..7a7d9d15ad85c7026381283b265bb72b81f32c75 100644
--- a/source/libs/stream/src/streamTask.c
+++ b/source/libs/stream/src/streamTask.c
@@ -72,6 +72,7 @@ int32_t tEncodeSStreamTask(SEncoder* pEncoder, const SStreamTask* pTask) {
     if (tSerializeSUseDbRspImp(pEncoder, &pTask->shuffleDispatcher.dbInfo) < 0) return -1;
     /*if (tEncodeI8(pEncoder, pTask->shuffleDispatcher.hashMethod) < 0) return -1;*/
   }
+  if (tEncodeI64(pEncoder, pTask->triggerParam) < 0) return -1;
 
   /*tEndEncode(pEncoder);*/
   return pEncoder->pos;
@@ -121,6 +122,7 @@ int32_t tDecodeSStreamTask(SDecoder* pDecoder, SStreamTask* pTask) {
     /*if (tDecodeI8(pDecoder, &pTask->shuffleDispatcher.hashMethod) < 0) return -1;*/
     if (tDeserializeSUseDbRspImp(pDecoder, &pTask->shuffleDispatcher.dbInfo) < 0) return -1;
   }
+  if (tDecodeI64(pDecoder, &pTask->triggerParam) < 0) return -1;
 
   /*tEndDecode(pDecoder);*/
   return 0;
diff --git a/source/util/src/tarray.c b/source/util/src/tarray.c
index 2357f760d15bcc86ce6b74e770fab51715b0549e..ec90e5a9b9493d541d365cd39bb3a80a52a7d697 100644
--- a/source/util/src/tarray.c
+++ b/source/util/src/tarray.c
@@ -174,7 +174,11 @@ void taosArrayRemoveDuplicate(SArray* pArray, __compar_fn_t comparFn, void (*fp)
 }
 
 void* taosArrayAddAll(SArray* pArray, const SArray* pInput) {
-  return taosArrayAddBatch(pArray, pInput->pData, (int32_t)taosArrayGetSize(pInput));
+  if (pInput) {
+    return taosArrayAddBatch(pArray, pInput->pData, (int32_t)taosArrayGetSize(pInput));
+  } else {
+    return NULL;
+  }
 }
 
 void* taosArrayPop(SArray* pArray) {