diff --git a/include/libs/stream/tstream.h b/include/libs/stream/tstream.h
index ab1c00a69409f636e3a890588398d8708b62128b..240415b66b328d1679b39e7d1077e066d3e59c85 100644
--- a/include/libs/stream/tstream.h
+++ b/include/libs/stream/tstream.h
@@ -55,7 +55,6 @@ enum {
   TASK_INPUT_STATUS__NORMAL = 1,
   TASK_INPUT_STATUS__BLOCKED,
   TASK_INPUT_STATUS__RECOVER,
-  TASK_INPUT_STATUS__PROCESSING,
   TASK_INPUT_STATUS__STOP,
   TASK_INPUT_STATUS__FAILED,
 };
@@ -320,17 +319,6 @@ int32_t      tDecodeSStreamTask(SDecoder* pDecoder, SStreamTask* pTask);
 void         tFreeSStreamTask(SStreamTask* pTask);
 
 static FORCE_INLINE int32_t streamTaskInput(SStreamTask* pTask, SStreamQueueItem* pItem) {
-#if 0
-  while (1) {
-    int8_t inputStatus =
-        atomic_val_compare_exchange_8(&pTask->inputStatus, TASK_INPUT_STATUS__NORMAL, TASK_INPUT_STATUS__PROCESSING);
-    if (inputStatus == TASK_INPUT_STATUS__NORMAL) {
-      break;
-    }
-    ASSERT(0);
-  }
-#endif
-
   if (pItem->type == STREAM_INPUT__DATA_SUBMIT) {
     SStreamDataSubmit* pSubmitClone = streamSubmitRefClone((SStreamDataSubmit*)pItem);
     if (pSubmitClone == NULL) {
@@ -443,13 +431,14 @@ typedef struct {
 typedef struct {
   int64_t streamId;
   int32_t taskId;
-  int32_t sourceTaskId;
-  int32_t sourceVg;
+  int32_t upstreamTaskId;
+  int32_t upstreamNodeId;
 } SStreamTaskRecoverReq;
 
 typedef struct {
   int64_t streamId;
-  int32_t taskId;
+  int32_t rspTaskId;
+  int32_t reqTaskId;
   int8_t  inputStatus;
 } SStreamTaskRecoverRsp;
 
diff --git a/source/dnode/snode/src/snode.c b/source/dnode/snode/src/snode.c
index 0a5fe1001cc4f177b071643f5b6070675220a361..352fb51a534d0b1b59a9358b462f435ca0a1bd07 100644
--- a/source/dnode/snode/src/snode.c
+++ b/source/dnode/snode/src/snode.c
@@ -179,7 +179,7 @@ static int32_t sndProcessTaskRecoverRsp(SSnode *pNode, SRpcMsg *pMsg) {
   SStreamMeta *pMeta = pNode->pMeta;
 
   SStreamTaskRecoverRsp *pRsp = pMsg->pCont;
-  int32_t                taskId = pRsp->taskId;
+  int32_t                taskId = pRsp->rspTaskId;
   SStreamTask           *pTask = *(SStreamTask **)taosHashGet(pMeta->pHash, &taskId, sizeof(int32_t));
   streamProcessRecoverRsp(pTask, pRsp);
   return 0;
diff --git a/source/dnode/vnode/src/tq/tq.c b/source/dnode/vnode/src/tq/tq.c
index 6b0e3944e3b3b44828e90cdb9d8d1a521fa468c2..364ecbab616e64cbac98aaa8062707017538ef69 100644
--- a/source/dnode/vnode/src/tq/tq.c
+++ b/source/dnode/vnode/src/tq/tq.c
@@ -796,7 +796,7 @@ int32_t tqProcessTaskDispatchRsp(STQ* pTq, SRpcMsg* pMsg) {
 
 int32_t tqProcessTaskRecoverRsp(STQ* pTq, SRpcMsg* pMsg) {
   SStreamTaskRecoverRsp* pRsp = pMsg->pCont;
-  int32_t                taskId = pRsp->taskId;
+  int32_t                taskId = pRsp->rspTaskId;
   SStreamTask**          ppTask = (SStreamTask**)taosHashGet(pTq->pStreamTasks, &taskId, sizeof(int32_t));
   if (ppTask) {
     streamProcessRecoverRsp(*ppTask, pRsp);
diff --git a/source/libs/stream/inc/streamInc.h b/source/libs/stream/inc/streamInc.h
index 06bd6539fd9a239be8666d588c0a45b3f38c5435..1ff27f125339569a3bcabc4a0a1d9a7fe4872fe2 100644
--- a/source/libs/stream/inc/streamInc.h
+++ b/source/libs/stream/inc/streamInc.h
@@ -32,10 +32,10 @@ typedef struct {
 
 static SStreamGlobalEnv streamEnv;
 
-int32_t streamExec(SStreamTask* pTask, SMsgCb* pMsgCb);
+int32_t streamExec(SStreamTask* pTask);
 int32_t streamPipelineExec(SStreamTask* pTask, int32_t batchNum);
 
-int32_t streamDispatch(SStreamTask* pTask, SMsgCb* pMsgCb);
+int32_t streamDispatch(SStreamTask* pTask);
 int32_t streamDispatchReqToData(const SStreamDispatchReq* pReq, SStreamDataBlock* pData);
 int32_t streamRetrieveReqToData(const SStreamRetrieveReq* pReq, SStreamDataBlock* pData);
 int32_t streamDispatchAllBlocks(SStreamTask* pTask, const SStreamDataBlock* data);
diff --git a/source/libs/stream/src/stream.c b/source/libs/stream/src/stream.c
index 8c9e8ca2dbc67c989bf8cc03e35b8ecc285776ed..31da865a69d8ab6a0efa0b1b305a107624e1f2d0 100644
--- a/source/libs/stream/src/stream.c
+++ b/source/libs/stream/src/stream.c
@@ -189,7 +189,7 @@ int32_t streamProcessDispatchReq(SStreamTask* pTask, SStreamDispatchReq* pReq, S
 #if 0
   if (pTask->execType != TASK_EXEC__NONE) {
 #endif
-  streamExec(pTask, pTask->pMsgCb);
+  streamExec(pTask);
 #if 0
   } else {
     ASSERT(pTask->sinkType != TASK_SINK__NONE);
@@ -208,7 +208,7 @@ int32_t streamProcessDispatchReq(SStreamTask* pTask, SStreamDispatchReq* pReq, S
   // 3.2 dispatch / sink
   if (pTask->dispatchType != TASK_DISPATCH__NONE) {
     ASSERT(pTask->sinkType == TASK_SINK__NONE);
-    streamDispatch(pTask, pTask->pMsgCb);
+    streamDispatch(pTask);
   }
 
   return 0;
@@ -233,26 +233,55 @@ int32_t streamProcessDispatchRsp(SStreamTask* pTask, SStreamDispatchRsp* pRsp) {
     return 0;
   }
   // continue dispatch
-  streamDispatch(pTask, pTask->pMsgCb);
+  streamDispatch(pTask);
   return 0;
 }
 
 int32_t streamProcessRunReq(SStreamTask* pTask) {
-  streamExec(pTask, pTask->pMsgCb);
+  streamExec(pTask);
 
   if (pTask->dispatchType != TASK_DISPATCH__NONE) {
-    streamDispatch(pTask, pTask->pMsgCb);
+    streamDispatch(pTask);
   }
   return 0;
 }
 
-int32_t streamProcessRecoverReq(SStreamTask* pTask, SStreamTaskRecoverReq* pReq, SRpcMsg* pMsg) {
-  //
+int32_t streamProcessRecoverReq(SStreamTask* pTask, SStreamTaskRecoverReq* pReq, SRpcMsg* pRsp) {
+  void* buf = rpcMallocCont(sizeof(SMsgHead) + sizeof(SStreamTaskRecoverRsp));
+  ((SMsgHead*)buf)->vgId = htonl(pReq->upstreamNodeId);
+
+  SStreamTaskRecoverRsp* pCont = POINTER_SHIFT(buf, sizeof(SMsgHead));
+  pCont->inputStatus = pTask->inputStatus;
+  pCont->streamId = pTask->streamId;
+  pCont->reqTaskId = pTask->taskId;
+  pCont->rspTaskId = pReq->upstreamTaskId;
+
+  pRsp->pCont = buf;
+  pRsp->contLen = sizeof(SMsgHead) + sizeof(SStreamTaskRecoverRsp);
+  tmsgSendRsp(pRsp);
   return 0;
 }
 
 int32_t streamProcessRecoverRsp(SStreamTask* pTask, SStreamTaskRecoverRsp* pRsp) {
-  //
+  if (pRsp->inputStatus == TASK_INPUT_STATUS__NORMAL) {
+    pTask->outputStatus = TASK_OUTPUT_STATUS__NORMAL;
+
+    streamProcessRunReq(pTask);
+
+    if (pTask->isDataScan) {
+      // scan data to recover
+      pTask->inputStatus = TASK_INPUT_STATUS__RECOVER;
+      pTask->taskStatus = TASK_STATUS__RECOVERING;
+      qStreamPrepareRecover(pTask->exec.executor, pTask->startVer, pTask->recoverSnapVer);
+      if (streamPipelineExec(pTask, 100) < 0) {
+        return -1;
+      }
+    } else {
+      pTask->inputStatus = TASK_INPUT_STATUS__NORMAL;
+      pTask->taskStatus = TASK_STATUS__NORMAL;
+    }
+  }
+
   return 0;
 }
 
@@ -262,10 +291,10 @@ int32_t streamProcessRetrieveReq(SStreamTask* pTask, SStreamRetrieveReq* pReq, S
   streamTaskEnqueueRetrieve(pTask, pReq, pRsp);
 
   ASSERT(pTask->execType != TASK_EXEC__NONE);
-  streamExec(pTask, pTask->pMsgCb);
+  streamExec(pTask);
 
   ASSERT(pTask->dispatchType != TASK_DISPATCH__NONE);
-  streamDispatch(pTask, pTask->pMsgCb);
+  streamDispatch(pTask);
 
   return 0;
 }
diff --git a/source/libs/stream/src/streamDispatch.c b/source/libs/stream/src/streamDispatch.c
index 834a3af0d5ac454cfbd5143968a9a9f90b5ba037..ec1dd693e1af740037dd0374958556811ec6180b 100644
--- a/source/libs/stream/src/streamDispatch.c
+++ b/source/libs/stream/src/streamDispatch.c
@@ -438,7 +438,7 @@ FAIL:
   return code;
 }
 
-int32_t streamDispatch(SStreamTask* pTask, SMsgCb* pMsgCb) {
+int32_t streamDispatch(SStreamTask* pTask) {
   ASSERT(pTask->dispatchType != TASK_DISPATCH__NONE);
 #if 1
   int8_t old =
diff --git a/source/libs/stream/src/streamExec.c b/source/libs/stream/src/streamExec.c
index 7c5cd6e391651883a58d51ca64016b0ea3648dee..196dbd6dc32e1b82c1b6cbd7a4409bbec90ff7d5 100644
--- a/source/libs/stream/src/streamExec.c
+++ b/source/libs/stream/src/streamExec.c
@@ -141,7 +141,7 @@ int32_t streamPipelineExec(SStreamTask* pTask, int32_t batchNum) {
 
     if (pTask->dispatchType != TASK_DISPATCH__NONE) {
       ASSERT(pTask->sinkType == TASK_SINK__NONE);
-      streamDispatch(pTask, pTask->pMsgCb);
+      streamDispatch(pTask);
     }
   }
 
@@ -229,7 +229,7 @@ static SArray* streamExecForQall(SStreamTask* pTask, SArray* pRes) {
 }
 
 // TODO: handle version
-int32_t streamExec(SStreamTask* pTask, SMsgCb* pMsgCb) {
+int32_t streamExec(SStreamTask* pTask) {
   SArray* pRes = taosArrayInit(0, sizeof(SSDataBlock));
   if (pRes == NULL) return -1;
   while (1) {
diff --git a/source/libs/stream/src/streamRecover.c b/source/libs/stream/src/streamRecover.c
index 87b27daf6079dd7ca76835b10e21f422968fbb03..dec23cd151fe687dafe44f53bb3653a4a1d2b75c 100644
--- a/source/libs/stream/src/streamRecover.c
+++ b/source/libs/stream/src/streamRecover.c
@@ -19,8 +19,8 @@ int32_t tEncodeStreamTaskRecoverReq(SEncoder* pEncoder, const SStreamTaskRecover
   if (tStartEncode(pEncoder) < 0) return -1;
   if (tEncodeI64(pEncoder, pReq->streamId) < 0) return -1;
   if (tEncodeI32(pEncoder, pReq->taskId) < 0) return -1;
-  if (tEncodeI32(pEncoder, pReq->sourceTaskId) < 0) return -1;
-  if (tEncodeI32(pEncoder, pReq->sourceVg) < 0) return -1;
+  if (tEncodeI32(pEncoder, pReq->upstreamTaskId) < 0) return -1;
+  if (tEncodeI32(pEncoder, pReq->upstreamNodeId) < 0) return -1;
   tEndEncode(pEncoder);
   return pEncoder->pos;
 }
@@ -29,8 +29,8 @@ int32_t tDecodeStreamTaskRecoverReq(SDecoder* pDecoder, SStreamTaskRecoverReq* p
   if (tStartDecode(pDecoder) < 0) return -1;
   if (tDecodeI64(pDecoder, &pReq->streamId) < 0) return -1;
   if (tDecodeI32(pDecoder, &pReq->taskId) < 0) return -1;
-  if (tDecodeI32(pDecoder, &pReq->sourceTaskId) < 0) return -1;
-  if (tDecodeI32(pDecoder, &pReq->sourceVg) < 0) return -1;
+  if (tDecodeI32(pDecoder, &pReq->upstreamTaskId) < 0) return -1;
+  if (tDecodeI32(pDecoder, &pReq->upstreamNodeId) < 0) return -1;
   tEndDecode(pDecoder);
   return 0;
 }
@@ -38,7 +38,8 @@ int32_t tDecodeStreamTaskRecoverReq(SDecoder* pDecoder, SStreamTaskRecoverReq* p
 int32_t tEncodeStreamTaskRecoverRsp(SEncoder* pEncoder, const SStreamTaskRecoverRsp* pRsp) {
   if (tStartEncode(pEncoder) < 0) return -1;
   if (tEncodeI64(pEncoder, pRsp->streamId) < 0) return -1;
-  if (tEncodeI32(pEncoder, pRsp->taskId) < 0) return -1;
+  if (tEncodeI32(pEncoder, pRsp->reqTaskId) < 0) return -1;
+  if (tEncodeI32(pEncoder, pRsp->rspTaskId) < 0) return -1;
   if (tEncodeI8(pEncoder, pRsp->inputStatus) < 0) return -1;
   tEndEncode(pEncoder);
   return pEncoder->pos;
@@ -47,7 +48,8 @@ int32_t tEncodeStreamTaskRecoverRsp(SEncoder* pEncoder, const SStreamTaskRecover
 int32_t tDecodeStreamTaskRecoverRsp(SDecoder* pDecoder, SStreamTaskRecoverRsp* pReq) {
   if (tStartDecode(pDecoder) < 0) return -1;
   if (tDecodeI64(pDecoder, &pReq->streamId) < 0) return -1;
-  if (tDecodeI32(pDecoder, &pReq->taskId) < 0) return -1;
+  if (tDecodeI32(pDecoder, &pReq->reqTaskId) < 0) return -1;
+  if (tDecodeI32(pDecoder, &pReq->rspTaskId) < 0) return -1;
   if (tDecodeI8(pDecoder, &pReq->inputStatus) < 0) return -1;
   tEndDecode(pDecoder);
   return 0;
@@ -125,7 +127,7 @@ int32_t streamProcessFailRecoverReq(SStreamTask* pTask, SMStreamTaskRecoverReq*
   }
 
   if (pTask->taskStatus == TASK_STATUS__RECOVERING) {
-    if (streamPipelineExec(pTask, 10) < 0) {
+    if (streamPipelineExec(pTask, 100) < 0) {
       // set fail
       return -1;
     }
diff --git a/source/util/src/tarray.c b/source/util/src/tarray.c
index 6095b67588c7794418b4e8ed3d73c945ccf89eea..3c4a0a20bdc4f43b14a4f6d476141cb7416db0e6 100644
--- a/source/util/src/tarray.c
+++ b/source/util/src/tarray.c
@@ -294,7 +294,7 @@ void taosArraySet(SArray* pArray, size_t index, void* pData) {
 void taosArrayPopFrontBatch(SArray* pArray, size_t cnt) {
   assert(cnt <= pArray->size);
   pArray->size = pArray->size - cnt;
-  if (pArray->size == 0) {
+  if (pArray->size == 0 || cnt == 0) {
     return;
   }
   memmove(pArray->pData, (char*)pArray->pData + cnt * pArray->elemSize, pArray->size * pArray->elemSize);