diff --git a/include/libs/stream/tstream.h b/include/libs/stream/tstream.h
index 5fd9a8b12b..0d021e2fa2 100644
--- a/include/libs/stream/tstream.h
+++ b/include/libs/stream/tstream.h
@@ -135,7 +135,6 @@ typedef struct {
 typedef struct {
   int8_t       type;
   int64_t      ver;
-  int32_t*     dataRef;
   SSDataBlock* pBlock;
 } SStreamRefDataBlock;
 
diff --git a/include/libs/wal/wal.h b/include/libs/wal/wal.h
index 8d4f6af577..7e106eefde 100644
--- a/include/libs/wal/wal.h
+++ b/include/libs/wal/wal.h
@@ -135,6 +135,7 @@ typedef struct {
 //  int8_t scanUncommited;
   int8_t scanNotApplied;
   int8_t scanMeta;
+  int8_t deleteMsg;
   int8_t enableRef;
 } SWalFilterCond;
 
@@ -193,9 +194,10 @@ SWalReader *walOpenReader(SWal *, SWalFilterCond *pCond);
 void        walCloseReader(SWalReader *pRead);
 void        walReadReset(SWalReader *pReader);
 int32_t     walReadVer(SWalReader *pRead, int64_t ver);
-int32_t     walReadSeekVer(SWalReader *pRead, int64_t ver);
+int32_t     walReaderSeekVer(SWalReader *pRead, int64_t ver);
 int32_t     walNextValidMsg(SWalReader *pRead);
 int64_t     walReaderGetCurrentVer(const SWalReader* pReader);
+int64_t     walReaderGetValidFirstVer(const SWalReader* pReader);
 
 // only for tq usage
 void    walSetReaderCapacity(SWalReader *pRead, int32_t capacity);
diff --git a/source/dnode/vnode/inc/vnode.h b/source/dnode/vnode/inc/vnode.h
index 542d584a24..cb83a561d2 100644
--- a/source/dnode/vnode/inc/vnode.h
+++ b/source/dnode/vnode/inc/vnode.h
@@ -264,7 +264,7 @@ int32_t tqSeekVer(STqReader *pReader, int64_t ver, const char *id);
 int32_t tqNextBlockInWal(STqReader* pReader);
 bool    tqNextBlockImpl(STqReader *pReader);
 
-int32_t extractSubmitMsgFromWal(SWalReader *pReader, SPackedData *pPackedData);
+int32_t extractMsgFromWal(SWalReader* pReader, void** pItem, const char* id);
 int32_t tqReaderSetSubmitMsg(STqReader *pReader, void *msgStr, int32_t msgLen, int64_t ver);
 bool    tqNextDataBlockFilterOut(STqReader *pReader, SHashObj *filterOutUids);
 int32_t tqRetrieveDataBlock(STqReader *pReader, SSubmitTbData **pSubmitTbDataRet);
diff --git a/source/dnode/vnode/src/inc/tq.h b/source/dnode/vnode/src/inc/tq.h
index a7b5e5e582..ef36b8429a 100644
--- a/source/dnode/vnode/src/inc/tq.h
+++ b/source/dnode/vnode/src/inc/tq.h
@@ -187,8 +187,9 @@ int32_t tqExpandTask(STQ* pTq, SStreamTask* pTask, int64_t ver);
 int32_t tqStreamTasksScanWal(STQ* pTq);
 
 // tq util
+int32_t extractDelDataBlock(const void* pData, int32_t len, int64_t ver, SStreamRefDataBlock** pRefBlock);
 char*   createStreamTaskIdStr(int64_t streamId, int32_t taskId);
-int32_t tqAddInputBlockNLaunchTask(SStreamTask* pTask, SStreamQueueItem* pQueueItem, int64_t ver);
+int32_t tqAddInputBlockNLaunchTask(SStreamTask* pTask, SStreamQueueItem* pQueueItem);
 int32_t tqExtractDataForMq(STQ* pTq, STqHandle* pHandle, const SMqPollReq* pRequest, SRpcMsg* pMsg);
 
 #ifdef __cplusplus
diff --git a/source/dnode/vnode/src/inc/vnodeInt.h b/source/dnode/vnode/src/inc/vnodeInt.h
index 1aea479511..0173db976d 100644
--- a/source/dnode/vnode/src/inc/vnodeInt.h
+++ b/source/dnode/vnode/src/inc/vnodeInt.h
@@ -213,7 +213,7 @@ int32_t tqProcessTaskDropReq(STQ* pTq, int64_t version, char* msg, int32_t msgLe
 int32_t tqProcessStreamTaskCheckReq(STQ* pTq, SRpcMsg* pMsg);
 int32_t tqProcessStreamTaskCheckRsp(STQ* pTq, int64_t version, char* msg, int32_t msgLen);
 int32_t tqProcessSubmitReqForSubscribe(STQ* pTq);
-int32_t tqProcessDelReq(STQ* pTq, void* pReq, int32_t len, int64_t ver);
+int32_t tqProcessDeleteDataReq(STQ* pTq, void* pReq, int32_t len, int64_t ver);
 int32_t tqProcessTaskRunReq(STQ* pTq, SRpcMsg* pMsg);
 int32_t tqProcessTaskDispatchReq(STQ* pTq, SRpcMsg* pMsg, bool exec);
 int32_t tqProcessTaskDispatchRsp(STQ* pTq, SRpcMsg* pMsg);
diff --git a/source/dnode/vnode/src/tq/tq.c b/source/dnode/vnode/src/tq/tq.c
index 75a5aa59da..9730ad2877 100644
--- a/source/dnode/vnode/src/tq/tq.c
+++ b/source/dnode/vnode/src/tq/tq.c
@@ -664,7 +664,8 @@ int32_t tqExpandTask(STQ* pTq, SStreamTask* pTask, int64_t ver) {
   }
 
   if (pTask->taskLevel == TASK_LEVEL__SOURCE) {
-    pTask->exec.pWalReader = walOpenReader(pTq->pVnode->pWal, NULL);
+    SWalFilterCond cond = {.deleteMsg = 1};
+    pTask->exec.pWalReader = walOpenReader(pTq->pVnode->pWal, &cond);
   }
 
   streamSetupTrigger(pTask);
@@ -868,7 +869,7 @@ int32_t tqProcessTaskRecover1Req(STQ* pTq, SRpcMsg* pMsg) {
   memcpy(serializedReq, &req, len);
 
   // dispatch msg
-  tqDebug("s-task:%s start recover block stage", pTask->id.idStr);
+  tqDebug("s-task:%s start to recover blocking stage", pTask->id.idStr);
 
   SRpcMsg rpcMsg = {
       .code = 0, .contLen = len, .msgType = TDMT_VND_STREAM_RECOVER_BLOCKING_STAGE, .pCont = serializedReq};
@@ -892,6 +893,9 @@ int32_t tqProcessTaskRecover2Req(STQ* pTq, int64_t sversion, char* msg, int32_t
     return -1;
   }
 
+  qDebug("s-task:%s set the start wal offset to be:%"PRId64, pTask->id.idStr, sversion);
+  walReaderSeekVer(pTask->exec.pWalReader, sversion);
+
   if (atomic_load_8(&pTask->status.taskStatus) == TASK_STATUS__DROPPING) {
     streamMetaReleaseTask(pTq->pStreamMeta, pTask);
     return 0;
@@ -958,7 +962,60 @@ int32_t tqProcessTaskRecoverFinishRsp(STQ* pTq, SRpcMsg* pMsg) {
   return 0;
 }
 
-int32_t tqProcessDelReq(STQ* pTq, void* pReq, int32_t len, int64_t ver) {
+int32_t extractDelDataBlock(const void* pData, int32_t len, int64_t ver, SStreamRefDataBlock** pRefBlock) {
+  SDecoder*   pCoder = &(SDecoder){0};
+  SDeleteRes* pRes = &(SDeleteRes){0};
+
+  *pRefBlock = NULL;
+
+  pRes->uidList = taosArrayInit(0, sizeof(tb_uid_t));
+  if (pRes->uidList == NULL) {
+    return TSDB_CODE_OUT_OF_MEMORY;
+  }
+
+  tDecoderInit(pCoder, (uint8_t*)pData, len);
+  tDecodeDeleteRes(pCoder, pRes);
+  tDecoderClear(pCoder);
+
+  int32_t numOfTables = taosArrayGetSize(pRes->uidList);
+  if (numOfTables == 0 || pRes->affectedRows == 0) {
+    taosArrayDestroy(pRes->uidList);
+    return TSDB_CODE_SUCCESS;
+  }
+
+  SSDataBlock* pDelBlock = createSpecialDataBlock(STREAM_DELETE_DATA);
+  blockDataEnsureCapacity(pDelBlock, numOfTables);
+  pDelBlock->info.rows = numOfTables;
+  pDelBlock->info.version = ver;
+
+  for (int32_t i = 0; i < numOfTables; i++) {
+    // start key column
+    SColumnInfoData* pStartCol = taosArrayGet(pDelBlock->pDataBlock, START_TS_COLUMN_INDEX);
+    colDataSetVal(pStartCol, i, (const char*)&pRes->skey, false);  // end key column
+    SColumnInfoData* pEndCol = taosArrayGet(pDelBlock->pDataBlock, END_TS_COLUMN_INDEX);
+    colDataSetVal(pEndCol, i, (const char*)&pRes->ekey, false);
+    // uid column
+    SColumnInfoData* pUidCol = taosArrayGet(pDelBlock->pDataBlock, UID_COLUMN_INDEX);
+    int64_t*         pUid = taosArrayGet(pRes->uidList, i);
+    colDataSetVal(pUidCol, i, (const char*)pUid, false);
+
+    colDataSetNULL(taosArrayGet(pDelBlock->pDataBlock, GROUPID_COLUMN_INDEX), i);
+    colDataSetNULL(taosArrayGet(pDelBlock->pDataBlock, CALCULATE_START_TS_COLUMN_INDEX), i);
+    colDataSetNULL(taosArrayGet(pDelBlock->pDataBlock, CALCULATE_END_TS_COLUMN_INDEX), i);
+  }
+
+  taosArrayDestroy(pRes->uidList);
+  *pRefBlock = taosAllocateQitem(sizeof(SStreamRefDataBlock), DEF_QITEM, 0);
+  if (pRefBlock == NULL) {
+    return TSDB_CODE_OUT_OF_MEMORY;
+  }
+
+  (*pRefBlock)->type = STREAM_INPUT__REF_DATA_BLOCK;
+  (*pRefBlock)->pBlock = pDelBlock;
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t tqProcessDeleteDataReq(STQ* pTq, void* pReq, int32_t len, int64_t ver) {
   bool        failed = false;
   SDecoder*   pCoder = &(SDecoder){0};
   SDeleteRes* pRes = &(SDeleteRes){0};
@@ -978,6 +1035,7 @@ int32_t tqProcessDelReq(STQ* pTq, void* pReq, int32_t len, int64_t ver) {
     taosArrayDestroy(pRes->uidList);
     return 0;
   }
+
   SSDataBlock* pDelBlock = createSpecialDataBlock(STREAM_DELETE_DATA);
   blockDataEnsureCapacity(pDelBlock, sz);
   pDelBlock->info.rows = sz;
@@ -1024,8 +1082,6 @@ int32_t tqProcessDelReq(STQ* pTq, void* pReq, int32_t len, int64_t ver) {
       SStreamRefDataBlock* pRefBlock = taosAllocateQitem(sizeof(SStreamRefDataBlock), DEF_QITEM, 0);
       pRefBlock->type = STREAM_INPUT__REF_DATA_BLOCK;
       pRefBlock->pBlock = pDelBlock;
-      pRefBlock->dataRef = pRef;
-      atomic_add_fetch_32(pRefBlock->dataRef, 1);
 
       if (tAppendDataToInputQueue(pTask, (SStreamQueueItem*)pRefBlock) < 0) {
         atomic_sub_fetch_32(pRef, 1);
diff --git a/source/dnode/vnode/src/tq/tqPush.c b/source/dnode/vnode/src/tq/tqPush.c
index 85fcb4fd80..50d94c5ed5 100644
--- a/source/dnode/vnode/src/tq/tqPush.c
+++ b/source/dnode/vnode/src/tq/tqPush.c
@@ -34,12 +34,12 @@ int32_t tqPushMsg(STQ* pTq, void* msg, int32_t msgLen, tmsg_t msgType, int64_t v
       return 0;
     }
 
-    if (msgType == TDMT_VND_SUBMIT) {
+    if (msgType == TDMT_VND_SUBMIT || msgType == TDMT_VND_DELETE) {
       tqStartStreamTasks(pTq);
     }
 
     if (msgType == TDMT_VND_DELETE) {
-      tqProcessDelReq(pTq, POINTER_SHIFT(msg, sizeof(SMsgHead)), msgLen - sizeof(SMsgHead), ver);
+//      tqProcessDeleteDataReq(pTq, POINTER_SHIFT(msg, sizeof(SMsgHead)), msgLen - sizeof(SMsgHead), ver);
     }
   }
 
diff --git a/source/dnode/vnode/src/tq/tqRead.c b/source/dnode/vnode/src/tq/tqRead.c
index 0d2208fa94..09574a6b62 100644
--- a/source/dnode/vnode/src/tq/tqRead.c
+++ b/source/dnode/vnode/src/tq/tqRead.c
@@ -294,32 +294,51 @@ void tqCloseReader(STqReader* pReader) {
 }
 
 int32_t tqSeekVer(STqReader* pReader, int64_t ver, const char* id) {
-  if (walReadSeekVer(pReader->pWalReader, ver) < 0) {
+  if (walReaderSeekVer(pReader->pWalReader, ver) < 0) {
     return -1;
   }
   tqDebug("wal reader seek to ver:%"PRId64" %s", ver, id);
   return 0;
 }
 
-int32_t extractSubmitMsgFromWal(SWalReader* pReader, SPackedData* pPackedData) {
-  if (walNextValidMsg(pReader) < 0) {
-    return -1;
+int32_t extractMsgFromWal(SWalReader* pReader, void** pItem, const char* id) {
+  int32_t code = walNextValidMsg(pReader);
+  if (code != TSDB_CODE_SUCCESS) {
+    return code;
   }
 
-  void*   pBody = POINTER_SHIFT(pReader->pHead->head.body, sizeof(SSubmitReq2Msg));
-  int32_t len = pReader->pHead->head.bodyLen - sizeof(SSubmitReq2Msg);
   int64_t ver = pReader->pHead->head.version;
 
-  void* data = taosMemoryMalloc(len);
-  if (data == NULL) {
-    // todo: for all stream in this vnode, keep this offset in the offset files, and wait for a moment, and then retry
-    terrno = TSDB_CODE_OUT_OF_MEMORY;
-    tqError("vgId:%d, failed to copy submit data for stream processing, since out of memory", 0);
-    return -1;
+  if (pReader->pHead->head.msgType == TDMT_VND_SUBMIT) {
+    void*   pBody = POINTER_SHIFT(pReader->pHead->head.body, sizeof(SSubmitReq2Msg));
+    int32_t len = pReader->pHead->head.bodyLen - sizeof(SSubmitReq2Msg);
+
+    void* data = taosMemoryMalloc(len);
+    if (data == NULL) {
+      // todo: for all stream in this vnode, keep this offset in the offset files, and wait for a moment, and then retry
+      terrno = TSDB_CODE_OUT_OF_MEMORY;
+      tqError("vgId:%d, failed to copy submit data for stream processing, since out of memory", 0);
+      return -1;
+    }
+
+    memcpy(data, pBody, len);
+    SPackedData data1 = (SPackedData){.ver = ver, .msgLen = len, .msgStr = data};
+
+    *pItem = (SStreamQueueItem*)streamDataSubmitNew(data1, STREAM_INPUT__DATA_SUBMIT);
+    if (*pItem == NULL) {
+      terrno = TSDB_CODE_OUT_OF_MEMORY;
+      tqError("%s failed to create data submit for stream since out of memory", id);
+      return terrno;
+    }
+  } else if (pReader->pHead->head.msgType == TDMT_VND_DELETE) {
+    void*   pBody = POINTER_SHIFT(pReader->pHead->head.body, sizeof(SMsgHead));
+    int32_t len = pReader->pHead->head.bodyLen - sizeof(SMsgHead);
+
+    extractDelDataBlock(pBody, len, ver, (SStreamRefDataBlock**)pItem);
+  } else {
+    ASSERT(0);
   }
 
-  memcpy(data, pBody, len);
-  *pPackedData = (SPackedData){.ver = ver, .msgLen = len, .msgStr = data};
   return 0;
 }
 
diff --git a/source/dnode/vnode/src/tq/tqRestore.c b/source/dnode/vnode/src/tq/tqRestore.c
index 0bb33b1215..7db078140d 100644
--- a/source/dnode/vnode/src/tq/tqRestore.c
+++ b/source/dnode/vnode/src/tq/tqRestore.c
@@ -107,42 +107,54 @@ int32_t createStreamRunReq(SStreamMeta* pStreamMeta, bool* pScanIdle) {
     *pScanIdle = false;
 
     // seek the stored version and extract data from WAL
-    int32_t code = walReadSeekVer(pTask->exec.pWalReader, pTask->chkInfo.currentVer);
-    if (code != TSDB_CODE_SUCCESS) {  // no data in wal, quit
-      SWal *pWal = pTask->exec.pWalReader->pWal;
-      if (pTask->chkInfo.currentVer < pWal->vers.firstVer ) {
-        pTask->chkInfo.currentVer = pWal->vers.firstVer;
-        code = walReadSeekVer(pTask->exec.pWalReader, pTask->chkInfo.currentVer);
-        if (code != TSDB_CODE_SUCCESS) {
+    int64_t firstVer = walReaderGetValidFirstVer(pTask->exec.pWalReader);
+    if (pTask->chkInfo.currentVer < firstVer) {
+      pTask->chkInfo.currentVer = firstVer;
+      tqWarn("vgId:%d s-task:%s ver earlier than the first ver of wal range %" PRId64 ", forward to %" PRId64, vgId,
+             pTask->id.idStr, firstVer, pTask->chkInfo.currentVer);
+
+      // todo need retry if failed
+      int32_t code = walReaderSeekVer(pTask->exec.pWalReader, pTask->chkInfo.currentVer);
+      if (code != TSDB_CODE_SUCCESS) {
+        streamMetaReleaseTask(pStreamMeta, pTask);
+        continue;
+      }
+
+      // append the data for the stream
+      tqDebug("vgId:%d s-task:%s wal reader seek to ver:%" PRId64, vgId, pTask->id.idStr, pTask->chkInfo.currentVer);
+    } else {
+      int64_t currentVer = walReaderGetCurrentVer(pTask->exec.pWalReader);
+      if (currentVer == -1) {
+        int32_t code = walReaderSeekVer(pTask->exec.pWalReader, pTask->chkInfo.currentVer);
+        if (code != TSDB_CODE_SUCCESS) {  // no data in wal, quit
           streamMetaReleaseTask(pStreamMeta, pTask);
           continue;
         }
+
+        // append the data for the stream
+        tqDebug("vgId:%d s-task:%s wal reader initial seek to ver:%" PRId64, vgId, pTask->id.idStr, pTask->chkInfo.currentVer);
       }
-      streamMetaReleaseTask(pStreamMeta, pTask);
-      continue;
     }
 
     // append the data for the stream
-    tqDebug("vgId:%d s-task:%s wal reader seek to ver:%" PRId64, vgId, pTask->id.idStr, pTask->chkInfo.currentVer);
+//    tqDebug("vgId:%d s-task:%s wal reader seek to ver:%" PRId64, vgId, pTask->id.idStr, pTask->chkInfo.currentVer);
 
-    SPackedData packData = {0};
-    code = extractSubmitMsgFromWal(pTask->exec.pWalReader, &packData);
+    SStreamQueueItem* pItem = NULL;
+    int32_t code = extractMsgFromWal(pTask->exec.pWalReader, (void**) &pItem, pTask->id.idStr);
     if (code != TSDB_CODE_SUCCESS) {  // failed, continue
       streamMetaReleaseTask(pStreamMeta, pTask);
       continue;
     }
 
-    SStreamDataSubmit2* p = streamDataSubmitNew(packData, STREAM_INPUT__DATA_SUBMIT);
-    if (p == NULL) {
-      terrno = TSDB_CODE_OUT_OF_MEMORY;
-      tqError("%s failed to create data submit for stream since out of memory", pTask->id.idStr);
+    // delete ignore
+    if (pItem == NULL) {
       streamMetaReleaseTask(pStreamMeta, pTask);
       continue;
     }
 
     noNewDataInWal = false;
 
-    code = tqAddInputBlockNLaunchTask(pTask, (SStreamQueueItem*)p, packData.ver);
+    code = tqAddInputBlockNLaunchTask(pTask, pItem);
     if (code == TSDB_CODE_SUCCESS) {
       pTask->chkInfo.currentVer = walReaderGetCurrentVer(pTask->exec.pWalReader);
       tqDebug("s-task:%s set the ver:%" PRId64 " from WALReader after extract block from WAL", pTask->id.idStr,
@@ -151,8 +163,7 @@ int32_t createStreamRunReq(SStreamMeta* pStreamMeta, bool* pScanIdle) {
       tqError("s-task:%s append input queue failed, ver:%"PRId64, pTask->id.idStr, pTask->chkInfo.currentVer);
     }
 
-    streamDataSubmitDestroy(p);
-    taosFreeQitem(p);
+
     streamMetaReleaseTask(pStreamMeta, pTask);
   }
 
diff --git a/source/dnode/vnode/src/tq/tqScan.c b/source/dnode/vnode/src/tq/tqScan.c
index 800bcc8b71..e4b2fa8821 100644
--- a/source/dnode/vnode/src/tq/tqScan.c
+++ b/source/dnode/vnode/src/tq/tqScan.c
@@ -82,6 +82,7 @@ int32_t tqScanData(STQ* pTq, const STqHandle* pHandle, SMqDataRsp* pRsp, STqOffs
     SSDataBlock* pDataBlock = NULL;
     uint64_t     ts = 0;
     qStreamSetOpen(task);
+
     tqDebug("consumer:0x%" PRIx64 " vgId:%d, tmq one task start execute", pHandle->consumerId, vgId);
     if (qExecTask(task, &pDataBlock, &ts) != TSDB_CODE_SUCCESS) {
       tqError("consumer:0x%" PRIx64 " vgId:%d, task exec error since %s", pHandle->consumerId, vgId, terrstr());
diff --git a/source/dnode/vnode/src/tq/tqUtil.c b/source/dnode/vnode/src/tq/tqUtil.c
index dd4a02957d..622cc5b049 100644
--- a/source/dnode/vnode/src/tq/tqUtil.c
+++ b/source/dnode/vnode/src/tq/tqUtil.c
@@ -26,10 +26,10 @@ char* createStreamTaskIdStr(int64_t streamId, int32_t taskId) {
   return taosStrdup(buf);
 }
 
-int32_t tqAddInputBlockNLaunchTask(SStreamTask* pTask, SStreamQueueItem* pQueueItem, int64_t ver) {
+int32_t tqAddInputBlockNLaunchTask(SStreamTask* pTask, SStreamQueueItem* pQueueItem) {
   int32_t code = tAppendDataToInputQueue(pTask, pQueueItem);
   if (code < 0) {
-    tqError("s-task:%s failed to put into queue, too many, next start ver:%" PRId64, pTask->id.idStr, ver);
+    tqError("s-task:%s failed to put into queue, too many", pTask->id.idStr);
     return -1;
   }
 
diff --git a/source/libs/executor/src/scanoperator.c b/source/libs/executor/src/scanoperator.c
index 303fa09c99..7d3165237e 100644
--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -1821,7 +1821,7 @@ static SSDataBlock* doStreamScan(SOperatorInfo* pOperator) {
   SExecTaskInfo*   pTaskInfo = pOperator->pTaskInfo;
   SStreamScanInfo* pInfo = pOperator->info;
 
-  qDebug("stream scan called");
+  qDebug("stream scan started, %s", GET_TASKID(pTaskInfo));
 
   if (pTaskInfo->streamInfo.recoverStep == STREAM_RECOVER_STEP__PREPARE1 ||
       pTaskInfo->streamInfo.recoverStep == STREAM_RECOVER_STEP__PREPARE2) {
@@ -1830,13 +1830,13 @@ static SSDataBlock* doStreamScan(SOperatorInfo* pOperator) {
     if (pTaskInfo->streamInfo.recoverStep == STREAM_RECOVER_STEP__PREPARE1) {
       pTSInfo->base.cond.startVersion = 0;
       pTSInfo->base.cond.endVersion = pTaskInfo->streamInfo.fillHistoryVer1;
-      qDebug("stream recover step 1, from %" PRId64 " to %" PRId64, pTSInfo->base.cond.startVersion,
+      qDebug("stream recover step1, verRange:%" PRId64 " - %" PRId64, pTSInfo->base.cond.startVersion,
              pTSInfo->base.cond.endVersion);
       pTaskInfo->streamInfo.recoverStep = STREAM_RECOVER_STEP__SCAN1;
     } else {
       pTSInfo->base.cond.startVersion = pTaskInfo->streamInfo.fillHistoryVer1 + 1;
       pTSInfo->base.cond.endVersion = pTaskInfo->streamInfo.fillHistoryVer2;
-      qDebug("stream recover step 2, from %" PRId64 " to %" PRId64, pTSInfo->base.cond.startVersion,
+      qDebug("stream recover step2, verRange:%" PRId64 " - %" PRId64, pTSInfo->base.cond.startVersion,
              pTSInfo->base.cond.endVersion);
       pTaskInfo->streamInfo.recoverStep = STREAM_RECOVER_STEP__SCAN2;
     }
@@ -1941,7 +1941,6 @@ FETCH_NEXT_BLOCK:
   if (pInfo->blockType == STREAM_INPUT__DATA_BLOCK) {
     if (pInfo->validBlockIndex >= total) {
       doClearBufferedBlocks(pInfo);
-      /*pOperator->status = OP_EXEC_DONE;*/
       return NULL;
     }
 
diff --git a/source/libs/stream/src/stream.c b/source/libs/stream/src/stream.c
index 9ed297bd6b..7047461ca8 100644
--- a/source/libs/stream/src/stream.c
+++ b/source/libs/stream/src/stream.c
@@ -288,14 +288,7 @@ int32_t tAppendDataToInputQueue(SStreamTask* pTask, SStreamQueueItem* pItem) {
   int8_t type = pItem->type;
 
   if (type == STREAM_INPUT__DATA_SUBMIT) {
-    SStreamDataSubmit2* pSubmitBlock = streamSubmitBlockClone((SStreamDataSubmit2*)pItem);
-    if (pSubmitBlock == NULL) {
-      qDebug("task %d %p submit enqueue failed since out of memory", pTask->id.taskId, pTask);
-      terrno = TSDB_CODE_OUT_OF_MEMORY;
-      atomic_store_8(&pTask->inputStatus, TASK_INPUT_STATUS__FAILED);
-      return -1;
-    }
-
+    SStreamDataSubmit2* pSubmitBlock = (SStreamDataSubmit2*)pItem;
     int32_t total = taosQueueItemSize(pTask->inputQueue->queue) + 1;
     qDebug("s-task:%s submit enqueue %p %p msgLen:%d ver:%" PRId64 ", total in queue:%d", pTask->id.idStr,
            pItem, pSubmitBlock->submit.msgStr, pSubmitBlock->submit.msgLen,
diff --git a/source/libs/stream/src/streamData.c b/source/libs/stream/src/streamData.c
index ae616260f3..96022850a3 100644
--- a/source/libs/stream/src/streamData.c
+++ b/source/libs/stream/src/streamData.c
@@ -194,13 +194,7 @@ void streamFreeQitem(SStreamQueueItem* data) {
     taosFreeQitem(pMerge);
   } else if (type == STREAM_INPUT__REF_DATA_BLOCK) {
     SStreamRefDataBlock* pRefBlock = (SStreamRefDataBlock*)data;
-
-    int32_t ref = atomic_sub_fetch_32(pRefBlock->dataRef, 1);
-    ASSERT(ref >= 0);
-    if (ref == 0) {
-      blockDataDestroy(pRefBlock->pBlock);
-      taosMemoryFree(pRefBlock->dataRef);
-    }
+    blockDataDestroy(pRefBlock->pBlock);
     taosFreeQitem(pRefBlock);
   }
 }
diff --git a/source/libs/stream/src/streamExec.c b/source/libs/stream/src/streamExec.c
index e10562f5cb..e093d45074 100644
--- a/source/libs/stream/src/streamExec.c
+++ b/source/libs/stream/src/streamExec.c
@@ -60,7 +60,7 @@ static int32_t streamTaskExecImpl(SStreamTask* pTask, const void* data, SArray*
 
     SArray* pBlockList = pMerged->submits;
     int32_t numOfBlocks = taosArrayGetSize(pBlockList);
-    qDebug("st-task:%s %p set submit input (merged), batch num:%d", pTask->id.idStr, pTask, numOfBlocks);
+    qDebug("s-task:%s %p set submit input (merged), batch num:%d", pTask->id.idStr, pTask, numOfBlocks);
     qSetMultiStreamInput(pExecutor, pBlockList->pData, numOfBlocks, STREAM_INPUT__MERGED_SUBMIT);
   } else if (pItem->type == STREAM_INPUT__REF_DATA_BLOCK) {
     const SStreamRefDataBlock* pRefBlock = (const SStreamRefDataBlock*)data;
diff --git a/source/libs/stream/src/streamRecover.c b/source/libs/stream/src/streamRecover.c
index 0324580885..26429ea764 100644
--- a/source/libs/stream/src/streamRecover.c
+++ b/source/libs/stream/src/streamRecover.c
@@ -224,12 +224,19 @@ int32_t streamBuildSourceRecover2Req(SStreamTask* pTask, SStreamRecoverStep2Req*
 
 int32_t streamSourceRecoverScanStep2(SStreamTask* pTask, int64_t ver) {
   void* exec = pTask->exec.pExecutor;
+  const char* id = pTask->id.idStr;
 
-  qDebug("s-task:%s recover step2(blocking stage) started", pTask->id.idStr);
+  int64_t st = taosGetTimestampMs();
+  qDebug("s-task:%s recover step2(blocking stage) started", id);
   if (qStreamSourceRecoverStep2(exec, ver) < 0) {
   }
 
-  return streamScanExec(pTask, 100);
+  int32_t code = streamScanExec(pTask, 100);
+
+  double el = (taosGetTimestampMs() - st) / 1000.0;
+  qDebug("s-task:%s recover step2(blocking stage) ended, elapsed time:%.2fs", id,  el);
+
+  return code;
 }
 
 int32_t streamDispatchRecoverFinishReq(SStreamTask* pTask) {
diff --git a/source/libs/wal/src/walRead.c b/source/libs/wal/src/walRead.c
index 36d526d162..eed0c0dcfc 100644
--- a/source/libs/wal/src/walRead.c
+++ b/source/libs/wal/src/walRead.c
@@ -62,9 +62,6 @@ SWalReader *walOpenReader(SWal *pWal, SWalFilterCond *cond) {
 void walCloseReader(SWalReader *pReader) {
   taosCloseFile(&pReader->pIdxFile);
   taosCloseFile(&pReader->pLogFile);
-  /*if (pReader->cond.enableRef) {*/
-  /*taosHashRemove(pReader->pWal->pRefHash, &pReader->readerId, sizeof(int64_t));*/
-  /*}*/
   taosMemoryFreeClear(pReader->pHead);
   taosMemoryFree(pReader);
 }
@@ -74,22 +71,25 @@ int32_t walNextValidMsg(SWalReader *pReader) {
   int64_t lastVer = walGetLastVer(pReader->pWal);
   int64_t committedVer = walGetCommittedVer(pReader->pWal);
   int64_t appliedVer = walGetAppliedVer(pReader->pWal);
+
   if(appliedVer < committedVer){   // wait apply ver equal to commit ver, otherwise may lost data when consume data [TD-24010]
     wDebug("vgId:%d, wal apply ver:%"PRId64" smaller than commit ver:%"PRId64, pReader->pWal->cfg.vgId, appliedVer, committedVer);
-//    taosMsleep(10);
   }
-//  int64_t endVer = pReader->cond.scanUncommited ? lastVer : committedVer;
+
   int64_t endVer = TMIN(appliedVer, committedVer);
 
   wDebug("vgId:%d, wal start to fetch, index:%" PRId64 ", last index:%" PRId64 " commit index:%" PRId64
          ", applied index:%" PRId64", end index:%" PRId64,
          pReader->pWal->cfg.vgId, fetchVer, lastVer, committedVer, appliedVer, endVer);
+
   while (fetchVer <= endVer) {
     if (walFetchHeadNew(pReader, fetchVer) < 0) {
       return -1;
     }
-    if (pReader->pHead->head.msgType == TDMT_VND_SUBMIT ||
-        (IS_META_MSG(pReader->pHead->head.msgType) && pReader->cond.scanMeta)) {
+
+    int32_t type = pReader->pHead->head.msgType;
+    if (type == TDMT_VND_SUBMIT || ((type == TDMT_VND_DELETE) && (pReader->cond.deleteMsg == 1)) ||
+        (IS_META_MSG(type) && pReader->cond.scanMeta)) {
       if (walFetchBodyNew(pReader) < 0) {
         return -1;
       }
@@ -98,13 +98,16 @@ int32_t walNextValidMsg(SWalReader *pReader) {
       if (walSkipFetchBodyNew(pReader) < 0) {
         return -1;
       }
+
       fetchVer = pReader->curVersion;
     }
   }
+
   return -1;
 }
 
 int64_t walReaderGetCurrentVer(const SWalReader *pReader) { return pReader->curVersion; }
+int64_t walReaderGetValidFirstVer(const SWalReader *pReader) { return walGetFirstVer(pReader->pWal); }
 
 static int64_t walReadSeekFilePos(SWalReader *pReader, int64_t fileFirstVer, int64_t ver) {
   int64_t ret = 0;
@@ -206,7 +209,7 @@ int32_t walReadSeekVerImpl(SWalReader *pReader, int64_t ver) {
   return 0;
 }
 
-int32_t walReadSeekVer(SWalReader *pReader, int64_t ver) {
+int32_t walReaderSeekVer(SWalReader *pReader, int64_t ver) {
   SWal *pWal = pReader->pWal;
   if (ver == pReader->curVersion) {
     wDebug("vgId:%d, wal index:%" PRId64 " match, no need to reset", pReader->pWal->cfg.vgId, ver);
@@ -236,7 +239,7 @@ static int32_t walFetchHeadNew(SWalReader *pRead, int64_t fetchVer) {
   wDebug("vgId:%d, wal starts to fetch head, index:%" PRId64, pRead->pWal->cfg.vgId, fetchVer);
 
   if (pRead->curVersion != fetchVer) {
-    if (walReadSeekVer(pRead, fetchVer) < 0) {
+    if (walReaderSeekVer(pRead, fetchVer) < 0) {
       return -1;
     }
     seeked = true;
@@ -278,6 +281,7 @@ static int32_t walFetchBodyNew(SWalReader *pReader) {
       terrno = TSDB_CODE_OUT_OF_MEMORY;
       return -1;
     }
+
     pReader->pHead = ptr;
     pReadHead = &pReader->pHead->head;
     pReader->capacity = pReadHead->bodyLen;
@@ -293,14 +297,11 @@ static int32_t walFetchBodyNew(SWalReader *pReader) {
              pReader->pWal->cfg.vgId, pReader->pHead->head.version, ver);
       terrno = TSDB_CODE_WAL_FILE_CORRUPTED;
     }
-//    pRead->curInvalid = 1;
     return -1;
   }
 
   if (walValidBodyCksum(pReader->pHead) != 0) {
     wError("vgId:%d, wal fetch body error:%" PRId64 ", since body checksum not passed", pReader->pWal->cfg.vgId, ver);
-//    pRead->curInvalid = 1;
-
     terrno = TSDB_CODE_WAL_FILE_CORRUPTED;
     return -1;
   }
@@ -342,7 +343,7 @@ int32_t walFetchHead(SWalReader *pRead, int64_t ver, SWalCkHead *pHead) {
   }
 
   if (pRead->curVersion != ver) {
-    code = walReadSeekVer(pRead, ver);
+    code = walReaderSeekVer(pRead, ver);
     if (code < 0) {
 //      pRead->curVersion = ver;
 //      pRead->curInvalid = 1;
@@ -479,7 +480,7 @@ int32_t walReadVer(SWalReader *pReader, int64_t ver) {
   taosThreadMutexLock(&pReader->mutex);
 
   if (pReader->curVersion != ver) {
-    if (walReadSeekVer(pReader, ver) < 0) {
+    if (walReaderSeekVer(pReader, ver) < 0) {
       wError("vgId:%d, unexpected wal log, index:%" PRId64 ", since %s", pReader->pWal->cfg.vgId, ver, terrstr());
       taosThreadMutexUnlock(&pReader->mutex);
       return -1;