diff --git a/include/common/tmsg.h b/include/common/tmsg.h
index e772a47e3dc79aec6f474f1f9ad93b4398c67f6e..01923d2b30af0b4f4de5eddac607503261f32fc1 100644
--- a/include/common/tmsg.h
+++ b/include/common/tmsg.h
@@ -2767,6 +2767,7 @@ typedef struct {
 typedef struct {
   SMsgHead head;
   int64_t  leftForVer;
+  int64_t  streamId;
   int32_t  taskId;
 } SVDropStreamTaskReq;
 
@@ -2958,6 +2959,7 @@ int32_t tDecodeMqVgOffset(SDecoder* pDecoder, SMqVgOffset* pOffset);
 
 typedef struct {
   SMsgHead head;
+  int64_t  streamId;
   int32_t  taskId;
 } SVPauseStreamTaskReq;
 
@@ -2976,6 +2978,7 @@ int32_t tDeserializeSMPauseStreamReq(void* buf, int32_t bufLen, SMPauseStreamReq
 typedef struct {
   SMsgHead head;
   int32_t  taskId;
+  int64_t  streamId;
   int8_t   igUntreated;
 } SVResumeStreamTaskReq;
 
diff --git a/include/libs/stream/tstream.h b/include/libs/stream/tstream.h
index b241ae9b4125d4fd0fbaf40ef7477d819229572f..b9b24917f3dcf3a2a31780e1f9980b93da74efd4 100644
--- a/include/libs/stream/tstream.h
+++ b/include/libs/stream/tstream.h
@@ -644,9 +644,9 @@ void         streamMetaClose(SStreamMeta* streamMeta);
 int32_t      streamMetaSaveTask(SStreamMeta* pMeta, SStreamTask* pTask);
 int32_t      streamMetaRemoveTask(SStreamMeta* pMeta, int32_t taskId);
 int32_t      streamMetaRegisterTask(SStreamMeta* pMeta, int64_t ver, SStreamTask* pTask, bool* pAdded);
-int32_t      streamMetaUnregisterTask(SStreamMeta* pMeta, int32_t taskId);
+int32_t      streamMetaUnregisterTask(SStreamMeta* pMeta, int64_t streamId, int32_t taskId);
 int32_t      streamMetaGetNumOfTasks(SStreamMeta* pMeta);  // todo remove it
-SStreamTask* streamMetaAcquireTask(SStreamMeta* pMeta, int32_t taskId);
+SStreamTask* streamMetaAcquireTask(SStreamMeta* pMeta, int64_t streamId, int32_t taskId);
 void         streamMetaReleaseTask(SStreamMeta* pMeta, SStreamTask* pTask);
 
 int32_t streamMetaBegin(SStreamMeta* pMeta);
diff --git a/source/dnode/mnode/impl/src/mndScheduler.c b/source/dnode/mnode/impl/src/mndScheduler.c
index 2aac05b22d2c126780b479a3cbc2fa255d2f3e5f..36771147a9b5c312cb225ccae27bb426db39b3f5 100644
--- a/source/dnode/mnode/impl/src/mndScheduler.c
+++ b/source/dnode/mnode/impl/src/mndScheduler.c
@@ -232,7 +232,8 @@ int32_t mndAddShuffleSinkTasksToStream(SMnode* pMnode, SArray* pTaskList, SStrea
 
 int32_t mndAddSinkTaskToStream(SStreamObj* pStream, SArray* pTaskList, SMnode* pMnode, int32_t vgId, SVgObj* pVgroup,
                                int32_t fillHistory) {
-  SStreamTask* pTask = tNewStreamTask(pStream->uid, TASK_LEVEL__SINK, fillHistory, 0, pTaskList);
+  int64_t uid = (fillHistory == 0)? pStream->uid:pStream->hTaskUid;
+  SStreamTask* pTask = tNewStreamTask(uid, TASK_LEVEL__SINK, fillHistory, 0, pTaskList);
   if (pTask == NULL) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
     return -1;
@@ -335,8 +336,8 @@ static void setHTasksId(SArray* pTaskList, const SArray* pHTaskList) {
     (*pHTask)->streamTaskId.taskId = (*pStreamTask)->id.taskId;
     (*pHTask)->streamTaskId.streamId = (*pStreamTask)->id.streamId;
 
-    mDebug("s-task:0x%x related history task:0x%x, level:%d", (*pStreamTask)->id.taskId, (*pHTask)->id.taskId,
-           (*pHTask)->info.taskLevel);
+    mDebug("s-task:0x%" PRIx64 "-0x%x related history task:0x%" PRIx64 "-0x%x, level:%d", (*pStreamTask)->id.streamId,
+           (*pStreamTask)->id.taskId, (*pHTask)->id.streamId, (*pHTask)->id.taskId, (*pHTask)->info.taskLevel);
   }
 }
 
diff --git a/source/dnode/mnode/impl/src/mndStream.c b/source/dnode/mnode/impl/src/mndStream.c
index 4001202254d7717752712a97e2c38471be773182..a0d53ec780e26b969d1d543761582261b6251474 100644
--- a/source/dnode/mnode/impl/src/mndStream.c
+++ b/source/dnode/mnode/impl/src/mndStream.c
@@ -649,6 +649,8 @@ static int32_t mndPersistTaskDropReq(STrans *pTrans, SStreamTask *pTask) {
 
   pReq->head.vgId = htonl(pTask->info.nodeId);
   pReq->taskId = pTask->id.taskId;
+  pReq->streamId = pTask->id.streamId;
+
   STransAction action = {0};
   memcpy(&action.epSet, &pTask->info.epSet, sizeof(SEpSet));
   action.pCont = pReq;
@@ -1361,6 +1363,8 @@ static int32_t mndPauseStreamTask(STrans *pTrans, SStreamTask *pTask) {
   }
   pReq->head.vgId = htonl(pTask->info.nodeId);
   pReq->taskId = pTask->id.taskId;
+  pReq->streamId = pTask->id.streamId;
+
   STransAction action = {0};
   memcpy(&action.epSet, &pTask->info.epSet, sizeof(SEpSet));
   action.pCont = pReq;
@@ -1501,7 +1505,9 @@ static int32_t mndResumeStreamTask(STrans *pTrans, SStreamTask *pTask, int8_t ig
   }
   pReq->head.vgId = htonl(pTask->info.nodeId);
   pReq->taskId = pTask->id.taskId;
+  pReq->streamId = pTask->id.streamId;
   pReq->igUntreated = igUntreated;
+
   STransAction action = {0};
   memcpy(&action.epSet, &pTask->info.epSet, sizeof(SEpSet));
   action.pCont = pReq;
diff --git a/source/dnode/snode/src/snode.c b/source/dnode/snode/src/snode.c
index 558180a3c23f8293d33587d87ba8e7b47fe4db40..4000e728359b7f88f339519474b2033b14502bf6 100644
--- a/source/dnode/snode/src/snode.c
+++ b/source/dnode/snode/src/snode.c
@@ -35,9 +35,7 @@ void sndEnqueueStreamDispatch(SSnode *pSnode, SRpcMsg *pMsg) {
 
   tDecoderClear(&decoder);
 
-  int32_t taskId = req.taskId;
-
-  SStreamTask *pTask = streamMetaAcquireTask(pSnode->pMeta, taskId);
+  SStreamTask *pTask = streamMetaAcquireTask(pSnode->pMeta, req.streamId, req.taskId);
   if (pTask) {
     SRpcMsg rsp = {
         .info = pMsg->info,
@@ -181,21 +179,21 @@ int32_t sndProcessTaskDropReq(SSnode *pSnode, char *msg, int32_t msgLen) {
   SVDropStreamTaskReq *pReq = (SVDropStreamTaskReq *)msg;
   qDebug("snode:%d receive msg to drop stream task:0x%x", pSnode->pMeta->vgId, pReq->taskId);
 
-  SStreamTask* pTask = streamMetaAcquireTask(pSnode->pMeta, pReq->taskId);
+  SStreamTask* pTask = streamMetaAcquireTask(pSnode->pMeta, pReq->streamId, pReq->taskId);
   if (pTask == NULL) {
     qError("vgId:%d failed to acquire s-task:0x%x when dropping it", pSnode->pMeta->vgId, pReq->taskId);
     return 0;
   }
 
-  streamMetaUnregisterTask(pSnode->pMeta, pReq->taskId);
+  streamMetaUnregisterTask(pSnode->pMeta, pReq->streamId, pReq->taskId);
   streamMetaReleaseTask(pSnode->pMeta, pTask);
   return 0;
 }
 
 int32_t sndProcessTaskRunReq(SSnode *pSnode, SRpcMsg *pMsg) {
   SStreamTaskRunReq *pReq = pMsg->pCont;
-  int32_t            taskId = pReq->taskId;
-  SStreamTask       *pTask = streamMetaAcquireTask(pSnode->pMeta, taskId);
+
+  SStreamTask *pTask = streamMetaAcquireTask(pSnode->pMeta, pReq->streamId, pReq->taskId);
   if (pTask) {
     streamProcessRunReq(pTask);
     streamMetaReleaseTask(pSnode->pMeta, pTask);
@@ -213,9 +211,8 @@ int32_t sndProcessTaskDispatchReq(SSnode *pSnode, SRpcMsg *pMsg, bool exec) {
   SDecoder           decoder;
   tDecoderInit(&decoder, (uint8_t *)msgBody, msgLen);
   tDecodeStreamDispatchReq(&decoder, &req);
-  int32_t taskId = req.taskId;
 
-  SStreamTask *pTask = streamMetaAcquireTask(pSnode->pMeta, taskId);
+  SStreamTask *pTask = streamMetaAcquireTask(pSnode->pMeta, req.streamId, req.taskId);
   if (pTask) {
     SRpcMsg rsp = { .info = pMsg->info, .code = 0 };
     streamProcessDispatchMsg(pTask, &req, &rsp, exec);
@@ -235,8 +232,7 @@ int32_t sndProcessTaskRetrieveReq(SSnode *pSnode, SRpcMsg *pMsg) {
   tDecoderInit(&decoder, msgBody, msgLen);
   tDecodeStreamRetrieveReq(&decoder, &req);
   tDecoderClear(&decoder);
-  int32_t      taskId = req.dstTaskId;
-  SStreamTask *pTask = streamMetaAcquireTask(pSnode->pMeta, taskId);
+  SStreamTask *pTask = streamMetaAcquireTask(pSnode->pMeta, req.streamId, req.dstTaskId);
 
   if (pTask) {
     SRpcMsg rsp = { .info = pMsg->info, .code = 0};
@@ -251,8 +247,11 @@ int32_t sndProcessTaskRetrieveReq(SSnode *pSnode, SRpcMsg *pMsg) {
 
 int32_t sndProcessTaskDispatchRsp(SSnode *pSnode, SRpcMsg *pMsg) {
   SStreamDispatchRsp *pRsp = POINTER_SHIFT(pMsg->pCont, sizeof(SMsgHead));
-  int32_t             taskId = ntohl(pRsp->upstreamTaskId);
-  SStreamTask        *pTask = streamMetaAcquireTask(pSnode->pMeta, taskId);
+
+  int32_t taskId = htonl(pRsp->upstreamTaskId);
+  int64_t streamId = htobe64(pRsp->streamId);
+
+  SStreamTask *pTask = streamMetaAcquireTask(pSnode->pMeta, streamId, taskId);
   if (pTask) {
     streamProcessDispatchRsp(pTask, pRsp, pMsg->code);
     streamMetaReleaseTask(pSnode->pMeta, pTask);
@@ -260,7 +259,6 @@ int32_t sndProcessTaskDispatchRsp(SSnode *pSnode, SRpcMsg *pMsg) {
   } else {
     return -1;
   }
-  return 0;
 }
 
 int32_t sndProcessTaskRetrieveRsp(SSnode *pSnode, SRpcMsg *pMsg) {
@@ -297,7 +295,7 @@ int32_t sndProcessStreamTaskScanHistoryFinishReq(SSnode *pSnode, SRpcMsg *pMsg)
   tDecoderClear(&decoder);
 
   // find task
-  SStreamTask *pTask = streamMetaAcquireTask(pSnode->pMeta, req.downstreamTaskId);
+  SStreamTask *pTask = streamMetaAcquireTask(pSnode->pMeta, req.streamId, req.downstreamTaskId);
   if (pTask == NULL) {
     return -1;
   }
@@ -340,7 +338,7 @@ int32_t sndProcessStreamTaskCheckReq(SSnode *pSnode, SRpcMsg *pMsg) {
       .upstreamTaskId = req.upstreamTaskId,
   };
 
-  SStreamTask *pTask = streamMetaAcquireTask(pSnode->pMeta, taskId);
+  SStreamTask *pTask = streamMetaAcquireTask(pSnode->pMeta, req.streamId, taskId);
 
   if (pTask != NULL) {
     rsp.status = streamTaskCheckStatus(pTask);
@@ -400,7 +398,7 @@ int32_t sndProcessStreamTaskCheckRsp(SSnode* pSnode, SRpcMsg* pMsg) {
   qDebug("tq task:0x%x (vgId:%d) recv check rsp(reqId:0x%" PRIx64 ") from 0x%x (vgId:%d) status %d",
           rsp.upstreamTaskId, rsp.upstreamNodeId, rsp.reqId, rsp.downstreamTaskId, rsp.downstreamNodeId, rsp.status);
 
-  SStreamTask* pTask = streamMetaAcquireTask(pSnode->pMeta, rsp.upstreamTaskId);
+  SStreamTask* pTask = streamMetaAcquireTask(pSnode->pMeta, rsp.streamId, rsp.upstreamTaskId);
   if (pTask == NULL) {
     qError("tq failed to locate the stream task:0x%x (vgId:%d), it may have been destroyed", rsp.upstreamTaskId,
             pSnode->pMeta->vgId);
diff --git a/source/dnode/vnode/src/tq/tq.c b/source/dnode/vnode/src/tq/tq.c
index af336adc6aaff9ee6cf0331e362956b33fc47019..ad1af080fdef9b6f8cd844dfb1061dd69efb2d2e 100644
--- a/source/dnode/vnode/src/tq/tq.c
+++ b/source/dnode/vnode/src/tq/tq.c
@@ -1062,7 +1062,7 @@ int32_t tqProcessStreamTaskCheckReq(STQ* pTq, SRpcMsg* pMsg) {
       .upstreamTaskId = req.upstreamTaskId,
   };
 
-  SStreamTask* pTask = streamMetaAcquireTask(pTq->pStreamMeta, taskId);
+  SStreamTask* pTask = streamMetaAcquireTask(pTq->pStreamMeta, req.streamId, taskId);
   if (pTask != NULL) {
     rsp.status = streamTaskCheckStatus(pTask);
     streamMetaReleaseTask(pTq->pStreamMeta, pTask);
@@ -1072,8 +1072,9 @@ int32_t tqProcessStreamTaskCheckReq(STQ* pTq, SRpcMsg* pMsg) {
             pTask->id.idStr, pStatus, rsp.reqId, rsp.upstreamTaskId, rsp.upstreamNodeId, rsp.status);
   } else {
     rsp.status = 0;
-    tqDebug("tq recv task check(taskId:0x%x not built yet) req(reqId:0x%" PRIx64 ") from task:0x%x (vgId:%d), rsp status %d",
-            taskId, rsp.reqId, rsp.upstreamTaskId, rsp.upstreamNodeId, rsp.status);
+    tqDebug("tq recv task check(taskId:0x%" PRIx64 "-0x%x not built yet) req(reqId:0x%" PRIx64
+            ") from task:0x%x (vgId:%d), rsp status %d",
+            req.streamId, taskId, rsp.reqId, rsp.upstreamTaskId, rsp.upstreamNodeId, rsp.status);
   }
 
   return streamSendCheckRsp(pTq->pStreamMeta, &req, &rsp, &pMsg->info, taskId);
@@ -1099,7 +1100,7 @@ int32_t tqProcessStreamTaskCheckRsp(STQ* pTq, int64_t sversion, SRpcMsg* pMsg) {
   tqDebug("tq task:0x%x (vgId:%d) recv check rsp(reqId:0x%" PRIx64 ") from 0x%x (vgId:%d) status %d",
           rsp.upstreamTaskId, rsp.upstreamNodeId, rsp.reqId, rsp.downstreamTaskId, rsp.downstreamNodeId, rsp.status);
 
-  SStreamTask* pTask = streamMetaAcquireTask(pTq->pStreamMeta, rsp.upstreamTaskId);
+  SStreamTask* pTask = streamMetaAcquireTask(pTq->pStreamMeta, rsp.streamId, rsp.upstreamTaskId);
   if (pTask == NULL) {
     tqError("tq failed to locate the stream task:0x%x (vgId:%d), it may have been destroyed", rsp.upstreamTaskId,
             pTq->pStreamMeta->vgId);
@@ -1160,7 +1161,7 @@ int32_t tqProcessTaskDeployReq(STQ* pTq, int64_t sversion, char* msg, int32_t ms
   // not added into meta store
   if (added) {
     tqDebug("vgId:%d s-task:0x%x is deployed and add into meta, numOfTasks:%d", vgId, taskId, numOfTasks);
-    SStreamTask* p = streamMetaAcquireTask(pStreamMeta, taskId);
+    SStreamTask* p = streamMetaAcquireTask(pStreamMeta, pTask->id.streamId, taskId);
     if (p != NULL) {  // reset the downstreamReady flag.
       streamTaskCheckDownstreamTasks(p);
     }
@@ -1178,7 +1179,7 @@ int32_t tqProcessTaskScanHistory(STQ* pTq, SRpcMsg* pMsg) {
   SStreamMeta*           pMeta = pTq->pStreamMeta;
 
   int32_t      code = TSDB_CODE_SUCCESS;
-  SStreamTask* pTask = streamMetaAcquireTask(pMeta, pReq->taskId);
+  SStreamTask* pTask = streamMetaAcquireTask(pMeta, pReq->streamId, pReq->taskId);
   if (pTask == NULL) {
     tqError("vgId:%d failed to acquire stream task:0x%x during stream recover, task may have been destroyed",
             pMeta->vgId, pReq->taskId);
@@ -1234,7 +1235,7 @@ int32_t tqProcessTaskScanHistory(STQ* pTq, SRpcMsg* pMsg) {
     bool           done = false;
 
     // 1. get the related stream task
-    pStreamTask = streamMetaAcquireTask(pMeta, pTask->streamTaskId.taskId);
+    pStreamTask = streamMetaAcquireTask(pMeta, pTask->streamTaskId.streamId, pTask->streamTaskId.taskId);
     if (pStreamTask == NULL) {
       // todo delete this task, if the related stream task is dropped
       qError("failed to find s-task:0x%x, it may have been destroyed, drop fill-history task:%s",
@@ -1242,7 +1243,7 @@ int32_t tqProcessTaskScanHistory(STQ* pTq, SRpcMsg* pMsg) {
 
       tqDebug("s-task:%s fill-history task set status to be dropping", id);
 
-      streamMetaUnregisterTask(pMeta, pTask->id.taskId);
+      streamMetaUnregisterTask(pMeta, pTask->id.streamId, pTask->id.taskId);
       streamMetaReleaseTask(pMeta, pTask);
       return -1;
     }
@@ -1350,7 +1351,7 @@ int32_t tqProcessTaskTransferStateReq(STQ* pTq, SRpcMsg* pMsg) {
 
   tqDebug("vgId:%d start to process transfer state msg, from s-task:0x%x", pTq->pStreamMeta->vgId, req.downstreamTaskId);
 
-  SStreamTask* pTask = streamMetaAcquireTask(pTq->pStreamMeta, req.downstreamTaskId);
+  SStreamTask* pTask = streamMetaAcquireTask(pTq->pStreamMeta, req.streamId, req.downstreamTaskId);
   if (pTask == NULL) {
     tqError("failed to find task:0x%x, it may have been dropped already. process transfer state failed", req.downstreamTaskId);
     return -1;
@@ -1386,7 +1387,7 @@ int32_t tqProcessTaskScanHistoryFinishReq(STQ* pTq, SRpcMsg* pMsg) {
   tDecodeStreamScanHistoryFinishReq(&decoder, &req);
   tDecoderClear(&decoder);
 
-  SStreamTask* pTask = streamMetaAcquireTask(pTq->pStreamMeta, req.downstreamTaskId);
+  SStreamTask* pTask = streamMetaAcquireTask(pTq->pStreamMeta, req.streamId, req.downstreamTaskId);
   if (pTask == NULL) {
     tqError("vgId:%d process scan history finish msg, failed to find task:0x%x, it may be destroyed",
             pTq->pStreamMeta->vgId, req.downstreamTaskId);
@@ -1412,7 +1413,7 @@ int32_t tqProcessTaskScanHistoryFinishRsp(STQ* pTq, SRpcMsg* pMsg) {
   tDecodeCompleteHistoryDataMsg(&decoder, &req);
   tDecoderClear(&decoder);
 
-  SStreamTask* pTask = streamMetaAcquireTask(pTq->pStreamMeta, req.upstreamTaskId);
+  SStreamTask* pTask = streamMetaAcquireTask(pTq->pStreamMeta, req.streamId, req.upstreamTaskId);
   if (pTask == NULL) {
     tqError("vgId:%d process scan history finish rsp, failed to find task:0x%x, it may be destroyed",
             pTq->pStreamMeta->vgId, req.upstreamTaskId);
@@ -1503,7 +1504,7 @@ int32_t tqProcessTaskRunReq(STQ* pTq, SRpcMsg* pMsg) {
     return 0;
   }
 
-  SStreamTask* pTask = streamMetaAcquireTask(pTq->pStreamMeta, taskId);
+  SStreamTask* pTask = streamMetaAcquireTask(pTq->pStreamMeta, pReq->streamId, taskId);
   if (pTask != NULL) {
     // even in halt status, the data in inputQ must be processed
     int8_t st = pTask->status.taskStatus;
@@ -1538,7 +1539,7 @@ int32_t tqProcessTaskDispatchReq(STQ* pTq, SRpcMsg* pMsg, bool exec) {
   tDecoderInit(&decoder, (uint8_t*)msgBody, msgLen);
   tDecodeStreamDispatchReq(&decoder, &req);
 
-  SStreamTask* pTask = streamMetaAcquireTask(pTq->pStreamMeta, req.taskId);
+  SStreamTask* pTask = streamMetaAcquireTask(pTq->pStreamMeta, req.streamId, req.taskId);
   if (pTask) {
     SRpcMsg rsp = {.info = pMsg->info, .code = 0};
     streamProcessDispatchMsg(pTask, &req, &rsp, exec);
@@ -1552,10 +1553,12 @@ int32_t tqProcessTaskDispatchReq(STQ* pTq, SRpcMsg* pMsg, bool exec) {
 
 int32_t tqProcessTaskDispatchRsp(STQ* pTq, SRpcMsg* pMsg) {
   SStreamDispatchRsp* pRsp = POINTER_SHIFT(pMsg->pCont, sizeof(SMsgHead));
-  int32_t             taskId = ntohl(pRsp->upstreamTaskId);
-  SStreamTask*        pTask = streamMetaAcquireTask(pTq->pStreamMeta, taskId);
 
-  int32_t vgId = pTq->pStreamMeta->vgId;
+  int32_t      vgId = pTq->pStreamMeta->vgId;
+  int32_t      taskId = htonl(pRsp->upstreamTaskId);
+  int64_t      streamId = htobe64(pRsp->streamId);
+  SStreamTask* pTask = streamMetaAcquireTask(pTq->pStreamMeta, streamId, taskId);
+
   if (pTask) {
     streamProcessDispatchRsp(pTask, pRsp, pMsg->code);
     streamMetaReleaseTask(pTq->pStreamMeta, pTask);
@@ -1569,13 +1572,13 @@ int32_t tqProcessTaskDispatchRsp(STQ* pTq, SRpcMsg* pMsg) {
 int32_t tqProcessTaskDropReq(STQ* pTq, int64_t sversion, char* msg, int32_t msgLen) {
   SVDropStreamTaskReq* pReq = (SVDropStreamTaskReq*)msg;
   tqDebug("vgId:%d receive msg to drop stream task:0x%x", TD_VID(pTq->pVnode), pReq->taskId);
-  SStreamTask* pTask = streamMetaAcquireTask(pTq->pStreamMeta, pReq->taskId);
+  SStreamTask* pTask = streamMetaAcquireTask(pTq->pStreamMeta, pReq->streamId, pReq->taskId);
   if (pTask == NULL) {
     tqError("vgId:%d failed to acquire s-task:0x%x when dropping it", pTq->pStreamMeta->vgId, pReq->taskId);
     return 0;
   }
 
-  streamMetaUnregisterTask(pTq->pStreamMeta, pReq->taskId);
+  streamMetaUnregisterTask(pTq->pStreamMeta, pReq->streamId, pReq->taskId);
   streamMetaReleaseTask(pTq->pStreamMeta, pTask);
   return 0;
 }
@@ -1584,7 +1587,7 @@ int32_t tqProcessTaskPauseReq(STQ* pTq, int64_t sversion, char* msg, int32_t msg
   SVPauseStreamTaskReq* pReq = (SVPauseStreamTaskReq*)msg;
 
   SStreamMeta* pMeta = pTq->pStreamMeta;
-  SStreamTask* pTask = streamMetaAcquireTask(pMeta, pReq->taskId);
+  SStreamTask* pTask = streamMetaAcquireTask(pMeta, pReq->streamId, pReq->taskId);
   if (pTask == NULL) {
     tqError("vgId:%d process pause req, failed to acquire task:0x%x, it may have been dropped already", pMeta->vgId,
             pReq->taskId);
@@ -1597,7 +1600,7 @@ int32_t tqProcessTaskPauseReq(STQ* pTq, int64_t sversion, char* msg, int32_t msg
 
   SStreamTask* pHistoryTask = NULL;
   if (pTask->historyTaskId.taskId != 0) {
-    pHistoryTask = streamMetaAcquireTask(pMeta, pTask->historyTaskId.taskId);
+    pHistoryTask = streamMetaAcquireTask(pMeta, pTask->historyTaskId.streamId, pTask->historyTaskId.taskId);
     if (pHistoryTask == NULL) {
       tqError("vgId:%d process pause req, failed to acquire fill-history task:0x%x, it may have been dropped already",
               pMeta->vgId, pTask->historyTaskId.taskId);
@@ -1656,13 +1659,13 @@ int32_t tqProcessTaskResumeImpl(STQ* pTq, SStreamTask* pTask, int64_t sversion,
 
 int32_t tqProcessTaskResumeReq(STQ* pTq, int64_t sversion, char* msg, int32_t msgLen) {
   SVResumeStreamTaskReq* pReq = (SVResumeStreamTaskReq*)msg;
-  SStreamTask* pTask = streamMetaAcquireTask(pTq->pStreamMeta, pReq->taskId);
+  SStreamTask* pTask = streamMetaAcquireTask(pTq->pStreamMeta, pReq->streamId, pReq->taskId);
   int32_t code = tqProcessTaskResumeImpl(pTq, pTask, sversion, pReq->igUntreated);
   if (code != 0) {
     return code;
   }
 
-  SStreamTask* pHistoryTask = streamMetaAcquireTask(pTq->pStreamMeta, pTask->historyTaskId.taskId);
+  SStreamTask* pHistoryTask = streamMetaAcquireTask(pTq->pStreamMeta, pTask->historyTaskId.streamId, pTask->historyTaskId.taskId);
   if (pHistoryTask) {
     code = tqProcessTaskResumeImpl(pTq, pHistoryTask, sversion, pReq->igUntreated);
   }
@@ -1681,8 +1684,7 @@ int32_t tqProcessTaskRetrieveReq(STQ* pTq, SRpcMsg* pMsg) {
   tDecodeStreamRetrieveReq(&decoder, &req);
   tDecoderClear(&decoder);
 
-  int32_t      taskId = req.dstTaskId;
-  SStreamTask* pTask = streamMetaAcquireTask(pTq->pStreamMeta, taskId);
+  SStreamTask* pTask = streamMetaAcquireTask(pTq->pStreamMeta, req.streamId, req.dstTaskId);
 
   if (pTask) {
     SRpcMsg rsp = {.info = pMsg->info, .code = 0};
@@ -1720,7 +1722,7 @@ int32_t vnodeEnqueueStreamMsg(SVnode* pVnode, SRpcMsg* pMsg) {
   tDecoderClear(&decoder);
 
   int32_t taskId = req.taskId;
-  SStreamTask* pTask = streamMetaAcquireTask(pTq->pStreamMeta, taskId);
+  SStreamTask* pTask = streamMetaAcquireTask(pTq->pStreamMeta, req.streamId, req.taskId);
   if (pTask != NULL) {
     SRpcMsg rsp = {.info = pMsg->info, .code = 0};
     streamProcessDispatchMsg(pTask, &req, &rsp, false);
diff --git a/source/dnode/vnode/src/tq/tqRestore.c b/source/dnode/vnode/src/tq/tqRestore.c
index c3e7d03e4397f5d21c1866e3d2117646cfe5cf2e..3d9a91899cb2f91e811fb66c15610a9d0717ddca 100644
--- a/source/dnode/vnode/src/tq/tqRestore.c
+++ b/source/dnode/vnode/src/tq/tqRestore.c
@@ -72,8 +72,8 @@ int32_t tqStreamTasksStatusCheck(STQ* pTq) {
   taosWUnLockLatch(&pMeta->lock);
 
   for (int32_t i = 0; i < numOfTasks; ++i) {
-    int32_t*     pTaskId = taosArrayGet(pTaskList, i);
-    SStreamTask* pTask = streamMetaAcquireTask(pMeta, *pTaskId);
+    SStreamId*   pTaskId = taosArrayGet(pTaskList, i);
+    SStreamTask* pTask = streamMetaAcquireTask(pMeta, pTaskId->streamId, pTaskId->taskId);
     if (pTask == NULL) {
       continue;
     }
@@ -242,8 +242,8 @@ int32_t createStreamTaskRunReq(SStreamMeta* pStreamMeta, bool* pScanIdle) {
   numOfTasks = taosArrayGetSize(pTaskList);
 
   for (int32_t i = 0; i < numOfTasks; ++i) {
-    int32_t*     pTaskId = taosArrayGet(pTaskList, i);
-    SStreamTask* pTask = streamMetaAcquireTask(pStreamMeta, *pTaskId);
+    SStreamId*   pTaskId = taosArrayGet(pTaskList, i);
+    SStreamTask* pTask = streamMetaAcquireTask(pStreamMeta, pTaskId->streamId, pTaskId->taskId);
     if (pTask == NULL) {
       continue;
     }
diff --git a/source/libs/stream/src/streamExec.c b/source/libs/stream/src/streamExec.c
index 1fd2f7edf47c63b14360aa023b1c128c27a170c5..c7da80fdaf216896a6838d372cda4650990b7e90 100644
--- a/source/libs/stream/src/streamExec.c
+++ b/source/libs/stream/src/streamExec.c
@@ -290,7 +290,7 @@ static void waitForTaskIdle(SStreamTask* pTask, SStreamTask* pStreamTask) {
 static int32_t streamDoTransferStateToStreamTask(SStreamTask* pTask) {
   SStreamMeta* pMeta = pTask->pMeta;
 
-  SStreamTask* pStreamTask = streamMetaAcquireTask(pMeta, pTask->streamTaskId.taskId);
+  SStreamTask* pStreamTask = streamMetaAcquireTask(pMeta, pTask->streamTaskId.streamId, pTask->streamTaskId.taskId);
   if (pStreamTask == NULL) {
     // todo: destroy the fill-history task here
     qError("s-task:%s failed to find related stream task:0x%x, it may have been destroyed or closed", pTask->id.idStr,
@@ -350,10 +350,9 @@ static int32_t streamDoTransferStateToStreamTask(SStreamTask* pTask) {
   streamTaskResumeFromHalt(pStreamTask);
 
   qDebug("s-task:%s fill-history task set status to be dropping, save the state into disk", pTask->id.idStr);
-  int32_t taskId = pTask->id.taskId;
 
   // 5. free it and remove fill-history task from disk meta-store
-  streamMetaUnregisterTask(pMeta, taskId);
+  streamMetaUnregisterTask(pMeta, pTask->id.streamId, pTask->id.taskId);
 
   // 6. save to disk
   taosWLockLatch(&pMeta->lock);
diff --git a/source/libs/stream/src/streamMeta.c b/source/libs/stream/src/streamMeta.c
index 80b690e20d0504c0b36b0754a596b39306129001..fe455c0190f3abe013fdfd1609b7cb473afda85b 100644
--- a/source/libs/stream/src/streamMeta.c
+++ b/source/libs/stream/src/streamMeta.c
@@ -66,14 +66,14 @@ SStreamMeta* streamMetaOpen(const char* path, void* ahandle, FTaskExpand expandF
     goto _err;
   }
 
-  _hash_fn_t fp = taosGetDefaultHashFunction(TSDB_DATA_TYPE_INT);
+  _hash_fn_t fp = taosGetDefaultHashFunction(TSDB_DATA_TYPE_VARCHAR);
   pMeta->pTasks = taosHashInit(64, fp, true, HASH_NO_LOCK);
   if (pMeta->pTasks == NULL) {
     goto _err;
   }
 
   // task list
-  pMeta->pTaskList = taosArrayInit(4, sizeof(int32_t));
+  pMeta->pTaskList = taosArrayInit(4, sizeof(SStreamId));
   if (pMeta->pTaskList == NULL) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
     goto _err;
@@ -161,43 +161,6 @@ void streamMetaClose(SStreamMeta* pMeta) {
   taosMemoryFree(pMeta);
 }
 
-#if 0
-int32_t streamMetaAddSerializedTask(SStreamMeta* pMeta, int64_t ver, char* msg, int32_t msgLen) {
-  SStreamTask* pTask = taosMemoryCalloc(1, sizeof(SStreamTask));
-  if (pTask == NULL) {
-    return -1;
-  }
-  SDecoder decoder;
-  tDecoderInit(&decoder, (uint8_t*)msg, msgLen);
-  if (tDecodeStreamTask(&decoder, pTask) < 0) {
-    tDecoderClear(&decoder);
-    goto FAIL;
-  }
-  tDecoderClear(&decoder);
-
-  if (pMeta->expandFunc(pMeta->ahandle, pTask, ver) < 0) {
-    ASSERT(0);
-    goto FAIL;
-  }
-
-  if (taosHashPut(pMeta->pTasks, &pTask->id.taskId, sizeof(int32_t), &pTask, sizeof(void*)) < 0) {
-    goto FAIL;
-  }
-
-  if (tdbTbUpsert(pMeta->pTaskDb, &pTask->id.taskId, sizeof(int32_t), msg, msgLen, pMeta->txn) < 0) {
-    taosHashRemove(pMeta->pTasks, &pTask->id.taskId, sizeof(int32_t));
-    ASSERT(0);
-    goto FAIL;
-  }
-
-  return 0;
-
-FAIL:
-  if (pTask) tFreeStreamTask(pTask);
-  return -1;
-}
-#endif
-
 int32_t streamMetaSaveTask(SStreamMeta* pMeta, SStreamTask* pTask) {
   void*   buf = NULL;
   int32_t len;
@@ -241,14 +204,15 @@ int32_t streamMetaRemoveTask(SStreamMeta* pMeta, int32_t taskId) {
 int32_t streamMetaRegisterTask(SStreamMeta* pMeta, int64_t ver, SStreamTask* pTask, bool* pAdded) {
   *pAdded = false;
 
-  void* p = taosHashGet(pMeta->pTasks, &pTask->id.taskId, sizeof(pTask->id.taskId));
+  int64_t keys[2] = {pTask->id.streamId, pTask->id.taskId};
+  void* p = taosHashGet(pMeta->pTasks, keys, sizeof(keys));
   if (p == NULL) {
     if (pMeta->expandFunc(pMeta->ahandle, pTask, ver) < 0) {
       tFreeStreamTask(pTask);
       return -1;
     }
 
-    taosArrayPush(pMeta->pTaskList, &pTask->id.taskId);
+    taosArrayPush(pMeta->pTaskList, &pTask->id);
 
     if (streamMetaSaveTask(pMeta, pTask) < 0) {
       tFreeStreamTask(pTask);
@@ -263,7 +227,7 @@ int32_t streamMetaRegisterTask(SStreamMeta* pMeta, int64_t ver, SStreamTask* pTa
     return 0;
   }
 
-  taosHashPut(pMeta->pTasks, &pTask->id.taskId, sizeof(pTask->id.taskId), &pTask, POINTER_BYTES);
+  taosHashPut(pMeta->pTasks, keys, sizeof(keys), &pTask, POINTER_BYTES);
   *pAdded = true;
   return 0;
 }
@@ -274,10 +238,11 @@ int32_t streamMetaGetNumOfTasks(SStreamMeta* pMeta) {
   return (int32_t)size;
 }
 
-SStreamTask* streamMetaAcquireTask(SStreamMeta* pMeta, int32_t taskId) {
+SStreamTask* streamMetaAcquireTask(SStreamMeta* pMeta, int64_t streamId, int32_t taskId) {
   taosRLockLatch(&pMeta->lock);
 
-  SStreamTask** ppTask = (SStreamTask**)taosHashGet(pMeta->pTasks, &taskId, sizeof(int32_t));
+  int64_t keys[2] = {streamId, taskId};
+  SStreamTask** ppTask = (SStreamTask**)taosHashGet(pMeta->pTasks, keys, sizeof(keys));
   if (ppTask != NULL) {
     if (!streamTaskShouldStop(&(*ppTask)->status)) {
       int32_t ref = atomic_add_fetch_32(&(*ppTask)->refCnt, 1);
@@ -304,22 +269,24 @@ void streamMetaReleaseTask(SStreamMeta* pMeta, SStreamTask* pTask) {
   }
 }
 
-static void doRemoveIdFromList(SStreamMeta* pMeta, int32_t num, int32_t taskId) {
+static void doRemoveIdFromList(SStreamMeta* pMeta, int32_t num, SStreamId* id) {
   for (int32_t i = 0; i < num; ++i) {
-    int32_t* pTaskId = taosArrayGet(pMeta->pTaskList, i);
-    if (*pTaskId == taskId) {
+    SStreamId* pTaskId = taosArrayGet(pMeta->pTaskList, i);
+    if (pTaskId->streamId == id->streamId && pTaskId->taskId == id->taskId) {
       taosArrayRemove(pMeta->pTaskList, i);
       break;
     }
   }
 }
 
-int32_t streamMetaUnregisterTask(SStreamMeta* pMeta, int32_t taskId) {
+int32_t streamMetaUnregisterTask(SStreamMeta* pMeta, int64_t streamId, int32_t taskId) {
   SStreamTask* pTask = NULL;
 
   // pre-delete operation
   taosWLockLatch(&pMeta->lock);
-  SStreamTask** ppTask = (SStreamTask**)taosHashGet(pMeta->pTasks, &taskId, sizeof(int32_t));
+
+  int64_t keys[2] = {streamId, taskId};
+  SStreamTask** ppTask = (SStreamTask**)taosHashGet(pMeta->pTasks, keys, sizeof(keys));
   if (ppTask) {
     pTask = *ppTask;
     atomic_store_8(&pTask->status.taskStatus, TASK_STATUS__DROPPING);
@@ -335,7 +302,7 @@ int32_t streamMetaUnregisterTask(SStreamMeta* pMeta, int32_t taskId) {
 
   while (1) {
     taosRLockLatch(&pMeta->lock);
-    ppTask = (SStreamTask**)taosHashGet(pMeta->pTasks, &taskId, sizeof(int32_t));
+    ppTask = (SStreamTask**)taosHashGet(pMeta->pTasks, keys, sizeof(keys));
 
     if (ppTask) {
       if ((*ppTask)->status.timerActive == 0) {
@@ -354,15 +321,13 @@ int32_t streamMetaUnregisterTask(SStreamMeta* pMeta, int32_t taskId) {
 
   // let's do delete of stream task
   taosWLockLatch(&pMeta->lock);
-  ppTask = (SStreamTask**)taosHashGet(pMeta->pTasks, &taskId, sizeof(int32_t));
+  ppTask = (SStreamTask**)taosHashGet(pMeta->pTasks, keys, sizeof(keys));
   if (ppTask) {
-    taosHashRemove(pMeta->pTasks, &taskId, sizeof(int32_t));
+    taosHashRemove(pMeta->pTasks, keys, sizeof(keys));
     atomic_store_8(&pTask->status.taskStatus, TASK_STATUS__DROPPING);
 
     ASSERT(pTask->status.timerActive == 0);
-
-    int32_t num = taosArrayGetSize(pMeta->pTaskList);
-    doRemoveIdFromList(pMeta, num, pTask->id.taskId);
+    doRemoveIdFromList(pMeta, (int32_t)taosArrayGetSize(pMeta->pTaskList), &pTask->id);
 
     // remove the ref by timer
     if (pTask->triggerParam != 0) {
@@ -473,7 +438,8 @@ int32_t streamLoadTasks(SStreamMeta* pMeta, int64_t ver) {
     }
 
     // do duplicate task check.
-    void* p = taosHashGet(pMeta->pTasks, &pTask->id.taskId, sizeof(pTask->id.taskId));
+    int64_t keys[2] = {pTask->id.streamId, pTask->id.taskId};
+    void* p = taosHashGet(pMeta->pTasks, keys, sizeof(keys));
     if (p == NULL) {
       if (pMeta->expandFunc(pMeta->ahandle, pTask, pTask->chkInfo.version) < 0) {
         tdbFree(pKey);
@@ -484,7 +450,7 @@ int32_t streamLoadTasks(SStreamMeta* pMeta, int64_t ver) {
         return -1;
       }
 
-      taosArrayPush(pMeta->pTaskList, &pTask->id.taskId);
+      taosArrayPush(pMeta->pTaskList, &pTask->id);
     } else {
       tdbFree(pKey);
       tdbFree(pVal);
@@ -493,7 +459,7 @@ int32_t streamLoadTasks(SStreamMeta* pMeta, int64_t ver) {
       continue;
     }
 
-    if (taosHashPut(pMeta->pTasks, &pTask->id.taskId, sizeof(pTask->id.taskId), &pTask, sizeof(void*)) < 0) {
+    if (taosHashPut(pMeta->pTasks, keys, sizeof(keys), &pTask, sizeof(void*)) < 0) {
       tdbFree(pKey);
       tdbFree(pVal);
       tdbTbcClose(pCur);
diff --git a/source/libs/stream/src/streamRecover.c b/source/libs/stream/src/streamRecover.c
index ad486c3f201d3dab112b417d323c77ab7ccb5c01..e59b3f682d35ea498e6ae6fe9ecf8d0df367cbcc 100644
--- a/source/libs/stream/src/streamRecover.c
+++ b/source/libs/stream/src/streamRecover.c
@@ -19,7 +19,8 @@
 
 typedef struct SStreamTaskRetryInfo {
   SStreamMeta* pMeta;
-  int32_t taskId;
+  int32_t      taskId;
+  int64_t      streamId;
 } SStreamTaskRetryInfo;
 
 static int32_t streamSetParamForScanHistory(SStreamTask* pTask);
@@ -540,7 +541,9 @@ static void tryLaunchHistoryTask(void* param, void* tmrId) {
   qDebug("s-task:0x%x in timer to launch related history task", pInfo->taskId);
 
   taosWLockLatch(&pMeta->lock);
-  SStreamTask** ppTask = (SStreamTask**)taosHashGet(pMeta->pTasks, &pInfo->taskId, sizeof(int32_t));
+  int64_t keys[2] = {pInfo->streamId, pInfo->taskId};
+
+  SStreamTask** ppTask = (SStreamTask**)taosHashGet(pMeta->pTasks, keys, sizeof(keys));
   if (ppTask) {
     ASSERT((*ppTask)->status.timerActive == 1);
 
@@ -556,12 +559,12 @@ static void tryLaunchHistoryTask(void* param, void* tmrId) {
   }
   taosWUnLockLatch(&pMeta->lock);
 
-  SStreamTask* pTask = streamMetaAcquireTask(pMeta, pInfo->taskId);
+  SStreamTask* pTask = streamMetaAcquireTask(pMeta, pInfo->streamId, pInfo->taskId);
   if (pTask != NULL) {
     ASSERT(pTask->status.timerActive == 1);
 
     // abort the timer if intend to stop task
-    SStreamTask* pHTask = streamMetaAcquireTask(pMeta, pTask->historyTaskId.taskId);
+    SStreamTask* pHTask = streamMetaAcquireTask(pMeta, pTask->historyTaskId.streamId, pTask->historyTaskId.taskId);
     if (pHTask == NULL && (!streamTaskShouldStop(&pTask->status))) {
       const char* pStatus = streamGetTaskStatusStr(pTask->status.taskStatus);
       qWarn(
@@ -595,14 +598,16 @@ int32_t streamLaunchFillHistoryTask(SStreamTask* pTask) {
   SStreamMeta* pMeta = pTask->pMeta;
   int32_t      hTaskId = pTask->historyTaskId.taskId;
 
+  int64_t keys[2] = {pTask->historyTaskId.streamId, pTask->historyTaskId.taskId};
   // Set the execute conditions, including the query time window and the version range
-  SStreamTask** pHTask = taosHashGet(pMeta->pTasks, &hTaskId, sizeof(hTaskId));
+  SStreamTask** pHTask = taosHashGet(pMeta->pTasks, keys, sizeof(keys));
   if (pHTask == NULL) {
     qWarn("s-task:%s vgId:%d failed to launch history task:0x%x, since it is not built yet", pTask->id.idStr,
           pMeta->vgId, hTaskId);
 
     SStreamTaskRetryInfo* pInfo = taosMemoryCalloc(1, sizeof(SStreamTaskRetryInfo));
     pInfo->taskId = pTask->id.taskId;
+    pInfo->streamId = pTask->id.streamId;
     pInfo->pMeta = pTask->pMeta;
 
     if (pTask->launchTaskTimer == NULL) {
@@ -797,7 +802,8 @@ void launchFillHistoryTask(SStreamTask* pTask) {
   }
 
   ASSERT(pTask->status.downstreamReady == 1);
-  qDebug("s-task:%s start to launch related fill-history task:0x%x", pTask->id.idStr, tId);
+  qDebug("s-task:%s start to launch related fill-history task:0x%" PRIx64 "-0x%x", pTask->id.idStr,
+         pTask->historyTaskId.streamId, tId);
 
   // launch associated fill history task
   streamLaunchFillHistoryTask(pTask);