diff --git a/include/libs/stream/tstream.h b/include/libs/stream/tstream.h
index f5074becece062b293a13d4e9c68313c83fff116..8aacfec3970674449ae4c5ea252d31f8c20b97b8 100644
--- a/include/libs/stream/tstream.h
+++ b/include/libs/stream/tstream.h
@@ -42,8 +42,8 @@ enum {
   TASK_STATUS__DROPPING,
   TASK_STATUS__FAIL,
   TASK_STATUS__STOP,
-  TASK_STATUS__PREPARE_RECOVER,
-  TASK_STATUS__RECOVERING,
+  TASK_STATUS__RECOVER_DOWNSTREAM,
+  TASK_STATUS__RECOVER_SELF,
 };
 
 enum {
@@ -232,8 +232,8 @@ typedef struct {
 } SStreamChildEpInfo;
 
 typedef struct {
-  int32_t nodeId;
-  int32_t childId;
+  int32_t srcNodeId;
+  int32_t srcChildId;
   int64_t stateSaveVer;
   int64_t stateProcessedVer;
 } SStreamCheckpointInfo;
@@ -394,9 +394,6 @@ typedef struct {
   int32_t upstreamTaskId;
   int32_t upstreamChildId;
   int32_t upstreamNodeId;
-#if 0
-  int64_t sourceVer;
-#endif
   int32_t blockNum;
   SArray* dataLen;  // SArray<int32_t>
   SArray* data;     // SArray<SRetrieveTableRsp*>
@@ -426,6 +423,7 @@ typedef struct {
   int32_t rspToTaskId;
 } SStreamRetrieveRsp;
 
+#if 0
 typedef struct {
   int64_t streamId;
   int32_t taskId;
@@ -462,13 +460,25 @@ int32_t tDecodeSMStreamTaskRecoverReq(SDecoder* pDecoder, SMStreamTaskRecoverReq
 int32_t tEncodeSMStreamTaskRecoverRsp(SEncoder* pEncoder, const SMStreamTaskRecoverRsp* pRsp);
 int32_t tDecodeSMStreamTaskRecoverRsp(SDecoder* pDecoder, SMStreamTaskRecoverRsp* pRsp);
 
+int32_t streamProcessRecoverReq(SStreamTask* pTask, SStreamTaskRecoverReq* pReq, SRpcMsg* pMsg);
+int32_t streamProcessRecoverRsp(SStreamTask* pTask, SStreamTaskRecoverRsp* pRsp);
+#endif
+
 typedef struct {
   int64_t streamId;
-} SPStreamTaskRecoverReq;
+  int32_t downstreamTaskId;
+  int32_t taskId;
+} SStreamRecoverDownstreamReq;
 
 typedef struct {
-  int8_t reserved;
-} SPStreamTaskRecoverRsp;
+  int64_t streamId;
+  int32_t downstreamTaskId;
+  int32_t taskId;
+  SArray* checkpointVer;  // SArray<SStreamCheckpointInfo>
+} SStreamRecoverDownstreamRsp;
+
+int32_t tEncodeSStreamTaskRecoverReq(SEncoder* pEncoder, const SStreamRecoverDownstreamReq* pReq);
+int32_t tDecodeSStreamTaskRecoverRsp(SDecoder* pDecoder, const SStreamRecoverDownstreamRsp* pRsp);
 
 int32_t tDecodeStreamDispatchReq(SDecoder* pDecoder, SStreamDispatchReq* pReq);
 int32_t tDecodeStreamRetrieveReq(SDecoder* pDecoder, SStreamRetrieveReq* pReq);
@@ -479,8 +489,6 @@ int32_t streamSetupTrigger(SStreamTask* pTask);
 int32_t streamProcessRunReq(SStreamTask* pTask);
 int32_t streamProcessDispatchReq(SStreamTask* pTask, SStreamDispatchReq* pReq, SRpcMsg* pMsg, bool exec);
 int32_t streamProcessDispatchRsp(SStreamTask* pTask, SStreamDispatchRsp* pRsp);
-int32_t streamProcessRecoverReq(SStreamTask* pTask, SStreamTaskRecoverReq* pReq, SRpcMsg* pMsg);
-int32_t streamProcessRecoverRsp(SStreamTask* pTask, SStreamTaskRecoverRsp* pRsp);
 
 int32_t streamProcessRetrieveReq(SStreamTask* pTask, SStreamRetrieveReq* pReq, SRpcMsg* pMsg);
 int32_t streamProcessRetrieveRsp(SStreamTask* pTask, SStreamRetrieveRsp* pRsp);
diff --git a/source/dnode/mnode/impl/src/mndStream.c b/source/dnode/mnode/impl/src/mndStream.c
index ba9bb2982f88c82ffff59648c6f988a9a163204c..7bde05aca5047195ed02a88ccb01e849daed2646 100644
--- a/source/dnode/mnode/impl/src/mndStream.c
+++ b/source/dnode/mnode/impl/src/mndStream.c
@@ -504,6 +504,7 @@ static int32_t mndPersistTaskDropReq(STrans *pTrans, SStreamTask *pTask) {
   return 0;
 }
 
+#if 0
 static int32_t mndPersistTaskRecoverReq(STrans *pTrans, SStreamTask *pTask) {
   SMStreamTaskRecoverReq *pReq = taosMemoryCalloc(1, sizeof(SMStreamTaskRecoverReq));
   if (pReq == NULL) {
@@ -540,7 +541,6 @@ static int32_t mndPersistTaskRecoverReq(STrans *pTrans, SStreamTask *pTask) {
   return 0;
 }
 
-#if 0
 int32_t mndRecoverStreamTasks(SMnode *pMnode, STrans *pTrans, SStreamObj *pStream) {
   if (pStream->isDistributed) {
     int32_t lv = taosArrayGetSize(pStream->tasks);
diff --git a/source/dnode/vnode/src/tq/tq.c b/source/dnode/vnode/src/tq/tq.c
index f7da287ca12e11a34c6a64077c30fe3235d99ae2..02ca24805412e42f6113b2a972f8bb76bbd43118 100644
--- a/source/dnode/vnode/src/tq/tq.c
+++ b/source/dnode/vnode/src/tq/tq.c
@@ -777,6 +777,7 @@ int32_t tqProcessTaskDispatchReq(STQ* pTq, SRpcMsg* pMsg, bool exec) {
   }
 }
 
+#if 0
 int32_t tqProcessTaskRecoverReq(STQ* pTq, SRpcMsg* pMsg) {
   SStreamTaskRecoverReq* pReq = pMsg->pCont;
   int32_t                taskId = pReq->taskId;
@@ -789,25 +790,26 @@ 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 = streamMetaGetTask(pTq->pStreamMeta, taskId);
+int32_t tqProcessTaskRecoverRsp(STQ* pTq, SRpcMsg* pMsg) {
+  SStreamTaskRecoverRsp* pRsp = pMsg->pCont;
+  int32_t                taskId = pRsp->rspTaskId;
+
+  SStreamTask* pTask = streamMetaGetTask(pTq->pStreamMeta, taskId);
   if (pTask) {
-    streamProcessDispatchRsp(pTask, pRsp);
+    streamProcessRecoverRsp(pTask, pRsp);
     return 0;
   } else {
     return -1;
   }
 }
+#endif
 
-int32_t tqProcessTaskRecoverRsp(STQ* pTq, SRpcMsg* pMsg) {
-  SStreamTaskRecoverRsp* pRsp = pMsg->pCont;
-  int32_t                taskId = pRsp->rspTaskId;
-
-  SStreamTask* pTask = streamMetaGetTask(pTq->pStreamMeta, taskId);
+int32_t tqProcessTaskDispatchRsp(STQ* pTq, SRpcMsg* pMsg) {
+  SStreamDispatchRsp* pRsp = POINTER_SHIFT(pMsg->pCont, sizeof(SMsgHead));
+  int32_t             taskId = pRsp->taskId;
+  SStreamTask*        pTask = streamMetaGetTask(pTq->pStreamMeta, taskId);
   if (pTask) {
-    streamProcessRecoverRsp(pTask, pRsp);
+    streamProcessDispatchRsp(pTask, pRsp);
     return 0;
   } else {
     return -1;
@@ -873,6 +875,8 @@ void vnodeEnqueueStreamMsg(SVnode* pVnode, SRpcMsg* pMsg) {
         .code = 0,
     };
     streamProcessDispatchReq(pTask, &req, &rsp, false);
+    rpcFreeCont(pMsg->pCont);
+    taosFreeQitem(pMsg);
     return;
   }
 
@@ -883,4 +887,6 @@ FAIL:
       .info = pMsg->info,
   };
   tmsgSendRsp(&rsp);
+  rpcFreeCont(pMsg->pCont);
+  taosFreeQitem(pMsg);
 }
diff --git a/source/dnode/vnode/src/vnd/vnodeSvr.c b/source/dnode/vnode/src/vnd/vnodeSvr.c
index 0f8ec07016d018f1a57e676bc5e5304d613122bd..b8e94de115e9ed6fea9d349b709dde3dde77406e 100644
--- a/source/dnode/vnode/src/vnd/vnodeSvr.c
+++ b/source/dnode/vnode/src/vnd/vnodeSvr.c
@@ -334,14 +334,14 @@ int32_t vnodeProcessFetchMsg(SVnode *pVnode, SRpcMsg *pMsg, SQueueInfo *pInfo) {
     case TDMT_STREAM_TASK_DISPATCH:
       //      return tqProcessTaskDispatchReq(pVnode->pTq, pMsg, pInfo->workerId != 0);
       return tqProcessTaskDispatchReq(pVnode->pTq, pMsg, true);
-    case TDMT_STREAM_TASK_RECOVER:
-      return tqProcessTaskRecoverReq(pVnode->pTq, pMsg);
+      /*case TDMT_STREAM_TASK_RECOVER:*/
+      /*return tqProcessTaskRecoverReq(pVnode->pTq, pMsg);*/
     case TDMT_STREAM_RETRIEVE:
       return tqProcessTaskRetrieveReq(pVnode->pTq, pMsg);
     case TDMT_STREAM_TASK_DISPATCH_RSP:
       return tqProcessTaskDispatchRsp(pVnode->pTq, pMsg);
-    case TDMT_STREAM_TASK_RECOVER_RSP:
-      return tqProcessTaskRecoverRsp(pVnode->pTq, pMsg);
+      /*case TDMT_STREAM_TASK_RECOVER_RSP:*/
+      /*return tqProcessTaskRecoverRsp(pVnode->pTq, pMsg);*/
     case TDMT_STREAM_RETRIEVE_RSP:
       return tqProcessTaskRetrieveRsp(pVnode->pTq, pMsg);
     default:
diff --git a/source/libs/stream/src/stream.c b/source/libs/stream/src/stream.c
index e4bf90f3088b33e2e6188e153f527a3b7cb845ec..1f8d742de4a4c9bd8b728d6917964792ffcb38f3 100644
--- a/source/libs/stream/src/stream.c
+++ b/source/libs/stream/src/stream.c
@@ -229,6 +229,7 @@ int32_t streamProcessRunReq(SStreamTask* pTask) {
   return 0;
 }
 
+#if 0
 int32_t streamProcessRecoverReq(SStreamTask* pTask, SStreamTaskRecoverReq* pReq, SRpcMsg* pRsp) {
   void* buf = rpcMallocCont(sizeof(SMsgHead) + sizeof(SStreamTaskRecoverRsp));
   ((SMsgHead*)buf)->vgId = htonl(pReq->upstreamNodeId);
@@ -267,6 +268,7 @@ int32_t streamProcessRecoverRsp(SStreamTask* pTask, SStreamTaskRecoverRsp* pRsp)
 
   return 0;
 }
+#endif
 
 int32_t streamProcessRetrieveReq(SStreamTask* pTask, SStreamRetrieveReq* pReq, SRpcMsg* pRsp) {
   qDebug("task %d receive retrieve req from node %d task %d", pTask->taskId, pReq->srcNodeId, pReq->srcTaskId);
diff --git a/source/libs/stream/src/streamExec.c b/source/libs/stream/src/streamExec.c
index 7512f792c1a6a631421f60497a5db95c46d9a788..ffb7c04bf2469d7a6b57e852c2dada75997257cd 100644
--- a/source/libs/stream/src/streamExec.c
+++ b/source/libs/stream/src/streamExec.c
@@ -200,14 +200,13 @@ int32_t streamExecForAll(SStreamTask* pTask) {
     streamTaskExecImpl(pTask, data, pRes);
     qDebug("stream task %d exec end", pTask->taskId);
 
-    streamFreeQitem(data);
-
     if (taosArrayGetSize(pRes) != 0) {
       SStreamDataBlock* qRes = taosAllocateQitem(sizeof(SStreamDataBlock), DEF_QITEM);
       if (qRes == NULL) {
         // TODO log failed ver
         streamQueueProcessFail(pTask->inputQueue);
         taosArrayDestroy(pRes);
+        streamFreeQitem(data);
         return -1;
       }
       qRes->type = STREAM_INPUT__DATA_BLOCK;
@@ -224,10 +223,14 @@ int32_t streamExecForAll(SStreamTask* pTask) {
         /*streamQueueProcessFail(pTask->inputQueue);*/
         taosArrayDestroyEx(pRes, (FDelete)blockDataFreeRes);
         taosFreeQitem(qRes);
+        streamFreeQitem(data);
         return -1;
       }
       /*streamQueueProcessSuccess(pTask->inputQueue);*/
+    } else {
+      taosArrayDestroy(pRes);
     }
+    streamFreeQitem(data);
   }
   return 0;
 }
diff --git a/source/libs/stream/src/streamRecover.c b/source/libs/stream/src/streamRecover.c
index 2b5af0684dc975dd8cbbb164c6e18218502bf6a8..b2a7e00877e53bae2bf5b78e71d348cc223ff8b7 100644
--- a/source/libs/stream/src/streamRecover.c
+++ b/source/libs/stream/src/streamRecover.c
@@ -15,6 +15,7 @@
 
 #include "streamInc.h"
 
+#if 0
 int32_t tEncodeStreamTaskRecoverReq(SEncoder* pEncoder, const SStreamTaskRecoverReq* pReq) {
   if (tStartEncode(pEncoder) < 0) return -1;
   if (tEncodeI64(pEncoder, pReq->streamId) < 0) return -1;
@@ -86,17 +87,18 @@ int32_t tDecodeSMStreamTaskRecoverRsp(SDecoder* pDecoder, SMStreamTaskRecoverRsp
   tEndDecode(pDecoder);
   return 0;
 }
+#endif
 
 int32_t tEncodeSStreamCheckpointInfo(SEncoder* pEncoder, const SStreamCheckpointInfo* pCheckpoint) {
-  if (tEncodeI32(pEncoder, pCheckpoint->nodeId) < 0) return -1;
-  if (tEncodeI32(pEncoder, pCheckpoint->childId) < 0) return -1;
+  if (tEncodeI32(pEncoder, pCheckpoint->srcNodeId) < 0) return -1;
+  if (tEncodeI32(pEncoder, pCheckpoint->srcChildId) < 0) return -1;
   if (tEncodeI64(pEncoder, pCheckpoint->stateProcessedVer) < 0) return -1;
   return 0;
 }
 
 int32_t tDecodeSStreamCheckpointInfo(SDecoder* pDecoder, SStreamCheckpointInfo* pCheckpoint) {
-  if (tDecodeI32(pDecoder, &pCheckpoint->nodeId) < 0) return -1;
-  if (tDecodeI32(pDecoder, &pCheckpoint->childId) < 0) return -1;
+  if (tDecodeI32(pDecoder, &pCheckpoint->srcNodeId) < 0) return -1;
+  if (tDecodeI32(pDecoder, &pCheckpoint->srcChildId) < 0) return -1;
   if (tDecodeI64(pDecoder, &pCheckpoint->stateProcessedVer) < 0) return -1;
   return 0;
 }
@@ -221,11 +223,17 @@ int32_t streamSaveAggLevel(SStreamMeta* pMeta, SStreamTask* pTask) {
   return 0;
 }
 
-int32_t streamFetchSinkStatus(SStreamTask* pTask) {
-  ASSERT(pTask->taskLevel != TASK_LEVEL__SINK);
+int32_t streamFetchDownstreamStatus(SStreamTask* pTask) {
   // set self status to recover_phase1
   // build fetch status msg
   // send fetch msg
+  atomic_store_8(&pTask->taskStatus, TASK_STATUS__RECOVER_DOWNSTREAM);
+
+  if (pTask->outputType == TASK_OUTPUT__FIXED_DISPATCH) {
+  } else if (pTask->outputType == TASK_OUTPUT__SHUFFLE_DISPATCH) {
+  } else {
+    ASSERT(0);
+  }
   return 0;
 }