diff --git a/include/util/taoserror.h b/include/util/taoserror.h
index 3b6ed7143a..a0898fa94b 100644
--- a/include/util/taoserror.h
+++ b/include/util/taoserror.h
@@ -965,6 +965,7 @@ int32_t  taosGetErrSize();
 #define TSDB_CODE_STREAM_INVALID_STATETRANS      TAOS_DEF_ERROR_CODE(0, 0x4103)
 #define TSDB_CODE_STREAM_TASK_IVLD_STATUS        TAOS_DEF_ERROR_CODE(0, 0x4104)
 #define TSDB_CODE_STREAM_NOT_LEADER              TAOS_DEF_ERROR_CODE(0, 0x4105)
+#define TSDB_CODE_STREAM_INTERNAL_ERROR          TAOS_DEF_ERROR_CODE(0, 0x4106)
 
 // TDLite
 #define TSDB_CODE_TDLITE_IVLD_OPEN_FLAGS         TAOS_DEF_ERROR_CODE(0, 0x5100)
diff --git a/source/dnode/vnode/src/tsdb/tsdbMergeTree.c b/source/dnode/vnode/src/tsdb/tsdbMergeTree.c
index f1a6ef8414..901632894e 100644
--- a/source/dnode/vnode/src/tsdb/tsdbMergeTree.c
+++ b/source/dnode/vnode/src/tsdb/tsdbMergeTree.c
@@ -901,7 +901,10 @@ int32_t tLDataIterNextRow(SLDataIter *pIter, const char *idStr, bool* hasNext) {
   pIter->rInfo.row = tsdbRowFromBlockData(pBlockData, pIter->iRow);
 
 _exit:
-  tsdbError("failed to exec stt-file nextIter, lino:%d, code:%s, %s", lino, tstrerror(code), idStr);
+  if (code) {
+    tsdbError("failed to exec stt-file nextIter, lino:%d, code:%s, %s", lino, tstrerror(code), idStr);
+  }
+
   *hasNext = (code == TSDB_CODE_SUCCESS) && (pIter->pSttBlk != NULL) && (pBlockData != NULL);
   return code;
 }
diff --git a/source/libs/stream/src/streamCheckStatus.c b/source/libs/stream/src/streamCheckStatus.c
index 2de86b8794..b7fb48ddc6 100644
--- a/source/libs/stream/src/streamCheckStatus.c
+++ b/source/libs/stream/src/streamCheckStatus.c
@@ -97,8 +97,6 @@ void streamTaskSendCheckMsg(SStreamTask* pTask) {
       .stage = pTask->pMeta->stage,
   };
 
-  ASSERT(pTask->status.downstreamReady == 0);
-
   // serialize streamProcessScanHistoryFinishRsp
   if (pTask->outputInfo.type == TASK_OUTPUT__FIXED_DISPATCH) {
     streamTaskStartMonitorCheckRsp(pTask);
@@ -187,8 +185,6 @@ void streamTaskProcessCheckMsg(SStreamMeta* pMeta, SStreamTaskCheckReq* pReq, SS
 }
 
 int32_t streamTaskProcessCheckRsp(SStreamTask* pTask, const SStreamTaskCheckRsp* pRsp) {
-  ASSERT(pTask->id.taskId == pRsp->upstreamTaskId);
-
   int64_t         now = taosGetTimestampMs();
   const char*     id = pTask->id.idStr;
   STaskCheckInfo* pInfo = &pTask->taskCheckInfo;
@@ -200,6 +196,11 @@ int32_t streamTaskProcessCheckRsp(SStreamTask* pTask, const SStreamTaskCheckRsp*
     return TSDB_CODE_SUCCESS;
   }
 
+  if (pTask->id.taskId != pRsp->upstreamTaskId) {
+    stError("s-task:%s invalid check downstream rsp, upstream task:0x%x discard", id, pRsp->upstreamTaskId);
+    return TSDB_CODE_INVALID_MSG;
+  }
+
   if (pRsp->status == TASK_DOWNSTREAM_READY) {
     int32_t code = streamTaskUpdateCheckInfo(pInfo, pRsp->downstreamTaskId, pRsp->status, now, pRsp->reqId, &left, id);
     if (code != TSDB_CODE_SUCCESS) {
@@ -235,7 +236,6 @@ int32_t streamTaskProcessCheckRsp(SStreamTask* pTask, const SStreamTaskCheckRsp*
 
       streamMetaAddFailedTaskSelf(pTask, now);
     } else {  // TASK_DOWNSTREAM_NOT_READY, rsp-check monitor will retry in 300 ms
-      ASSERT(left > 0);
       stDebug("s-task:%s (vgId:%d) recv check rsp from task:0x%x (vgId:%d) status:%d, total:%d not ready:%d", id,
               pRsp->upstreamNodeId, pRsp->downstreamTaskId, pRsp->downstreamNodeId, pRsp->status, total, left);
     }
@@ -315,8 +315,6 @@ void streamTaskStopMonitorCheckRsp(STaskCheckInfo* pInfo, const char* id) {
 }
 
 void streamTaskCleanupCheckInfo(STaskCheckInfo* pInfo) {
-  ASSERT(pInfo->inCheckProcess == 0);
-
   taosArrayDestroy(pInfo->pList);
   pInfo->pList = NULL;
 
@@ -338,7 +336,10 @@ void processDownstreamReadyRsp(SStreamTask* pTask) {
   (void) streamMetaAddTaskLaunchResult(pTask->pMeta, pTask->id.streamId, pTask->id.taskId, checkTs, readyTs, true);
 
   if (pTask->status.taskStatus == TASK_STATUS__HALT) {
-    ASSERT(HAS_RELATED_FILLHISTORY_TASK(pTask) && (pTask->info.fillHistory == 0));
+    if (!HAS_RELATED_FILLHISTORY_TASK(pTask) || (pTask->info.fillHistory != 0)) {
+      stError("s-task:%s status:halt fillhistory:%d not handle the ready rsp", pTask->id.idStr,
+              pTask->info.fillHistory);
+    }
 
     // halt it self for count window stream task until the related fill history task completed.
     stDebug("s-task:%s level:%d initial status is %s from mnode, set it to be halt", pTask->id.idStr,
@@ -396,7 +397,6 @@ void streamTaskInitTaskCheckInfo(STaskCheckInfo* pInfo, STaskOutputInfo* pOutput
     pInfo->notReadyTasks = 1;
   } else if (pOutputInfo->type == TASK_OUTPUT__SHUFFLE_DISPATCH) {
     pInfo->notReadyTasks = taosArrayGetSize(pOutputInfo->shuffleDispatcher.dbInfo.pVgroupInfos);
-    ASSERT(pInfo->notReadyTasks == pOutputInfo->shuffleDispatcher.dbInfo.vgNum);
   }
 
   pInfo->startTs = startTs;
@@ -461,7 +461,6 @@ int32_t streamTaskStartCheckDownstream(STaskCheckInfo* pInfo, const char* id) {
   if (pInfo->inCheckProcess == 0) {
     pInfo->inCheckProcess = 1;
   } else {
-    ASSERT(pInfo->startTs > 0);
     stError("s-task:%s already in check procedure, checkTs:%" PRId64 ", start monitor check rsp failed", id,
             pInfo->startTs);
     pInfo->stopCheckProcess = 0;  // disable auto stop of check process
@@ -564,8 +563,6 @@ void doSendCheckMsg(SStreamTask* pTask, SDownstreamStatusInfo* p) {
         break;
       }
     }
-  } else {
-    ASSERT(0);
   }
 }
 
@@ -585,7 +582,6 @@ void getCheckRspStatus(STaskCheckInfo* pInfo, int64_t el, int32_t* numOfReady, i
       (*numOfFault) += 1;
     } else {                // TASK_DOWNSTREAM_NOT_READY
       if (p->rspTs == 0) {  // not response yet
-        ASSERT(p->status == -1);
         if (el >= CHECK_NOT_RSP_DURATION) {  // not receive info for 10 sec.
           (void) taosArrayPush(pTimeoutList, &p->taskId);
         } else {                // el < CHECK_NOT_RSP_DURATION
@@ -610,9 +606,7 @@ void handleTimeoutDownstreamTasks(SStreamTask* pTask, SArray* pTimeoutList) {
   int32_t         vgId = pTask->pMeta->vgId;
   int32_t         numOfTimeout = taosArrayGetSize(pTimeoutList);
 
-  ASSERT(pTask->status.downstreamReady == 0);
   pInfo->timeoutStartTs = taosGetTimestampMs();
-
   for (int32_t i = 0; i < numOfTimeout; ++i) {
     int32_t* px = taosArrayGet(pTimeoutList, i);
     if (px == NULL) {
@@ -623,7 +617,13 @@ void handleTimeoutDownstreamTasks(SStreamTask* pTask, SArray* pTimeoutList) {
     SDownstreamStatusInfo* p = NULL;
     findCheckRspStatus(pInfo, taskId, &p);
     if (p != NULL) {
-      ASSERT(p->status == -1 && p->rspTs == 0);
+
+      if (p->status != -1 || p->rspTs != 0) {
+        stError("s-task:%s invalid rsp record entry, index:%d, status:%d, rspTs:%"PRId64, pTask->id.idStr, i, p->status,
+            p->rspTs);
+        continue;
+      }
+
       doSendCheckMsg(pTask, p);
     }
   }
@@ -662,8 +662,6 @@ void handleNotReadyDownstreamTask(SStreamTask* pTask, SArray* pNotReadyList) {
   int32_t         vgId = pTask->pMeta->vgId;
   int32_t         numOfNotReady = taosArrayGetSize(pNotReadyList);
 
-  ASSERT(pTask->status.downstreamReady == 0);
-
   // reset the info, and send the check msg to failure downstream again
   for (int32_t i = 0; i < numOfNotReady; ++i) {
     int32_t* pTaskId = taosArrayGet(pNotReadyList, i);
@@ -696,12 +694,10 @@ int32_t addDownstreamFailedStatusResultAsync(SMsgCb* pMsgCb, int32_t vgId, int64
 void rspMonitorFn(void* param, void* tmrId) {
   SStreamTask*      pTask = param;
   SStreamMeta*      pMeta = pTask->pMeta;
-  SStreamTaskState  pStat = streamTaskGetStatus(pTask);
   STaskCheckInfo*   pInfo = &pTask->taskCheckInfo;
   int32_t           vgId = pTask->pMeta->vgId;
   int64_t           now = taosGetTimestampMs();
   int64_t           timeoutDuration = now - pInfo->timeoutStartTs;
-  ETaskStatus       state = pStat.state;
   const char*       id = pTask->id.idStr;
   int32_t           numOfReady = 0;
   int32_t           numOfFault = 0;
@@ -712,9 +708,13 @@ void rspMonitorFn(void* param, void* tmrId) {
 
   stDebug("s-task:%s start to do check-downstream-rsp check in tmr", id);
 
-  if (state == TASK_STATUS__STOP) {
+  streamMutexLock(&pTask->lock);
+  SStreamTaskState  state = streamTaskGetStatus(pTask);
+  streamMutexUnlock(&pTask->lock);
+
+  if (state.state == TASK_STATUS__STOP) {
     int32_t ref = atomic_sub_fetch_32(&pTask->status.timerActive, 1);
-    stDebug("s-task:%s status:%s vgId:%d quit from monitor check-rsp tmr, ref:%d", id, pStat.name, vgId, ref);
+    stDebug("s-task:%s status:%s vgId:%d quit from monitor check-rsp tmr, ref:%d", id, state.name, vgId, ref);
 
     streamTaskCompleteCheckRsp(pInfo, true, id);
 
@@ -728,9 +728,9 @@ void rspMonitorFn(void* param, void* tmrId) {
     return;
   }
 
-  if (state == TASK_STATUS__DROPPING || state == TASK_STATUS__READY) {
+  if (state.state == TASK_STATUS__DROPPING || state.state == TASK_STATUS__READY) {
     int32_t ref = atomic_sub_fetch_32(&pTask->status.timerActive, 1);
-    stDebug("s-task:%s status:%s vgId:%d quit from monitor check-rsp tmr, ref:%d", id, pStat.name, vgId, ref);
+    stDebug("s-task:%s status:%s vgId:%d quit from monitor check-rsp tmr, ref:%d", id, state.name, vgId, ref);
 
     streamTaskCompleteCheckRsp(pInfo, true, id);
     streamMetaReleaseTask(pMeta, pTask);
@@ -740,7 +740,7 @@ void rspMonitorFn(void* param, void* tmrId) {
   streamMutexLock(&pInfo->checkInfoLock);
   if (pInfo->notReadyTasks == 0) {
     int32_t ref = atomic_sub_fetch_32(&pTask->status.timerActive, 1);
-    stDebug("s-task:%s status:%s vgId:%d all downstream ready, quit from monitor rsp tmr, ref:%d", id, pStat.name,
+    stDebug("s-task:%s status:%s vgId:%d all downstream ready, quit from monitor rsp tmr, ref:%d", id, state.name,
             vgId, ref);
 
     streamTaskCompleteCheckRsp(pInfo, false, id);
@@ -752,21 +752,34 @@ void rspMonitorFn(void* param, void* tmrId) {
   SArray* pNotReadyList = taosArrayInit(4, sizeof(int64_t));
   SArray* pTimeoutList = taosArrayInit(4, sizeof(int64_t));
 
-  if (pStat.state == TASK_STATUS__UNINIT) {
+  if (state.state == TASK_STATUS__UNINIT) {
     getCheckRspStatus(pInfo, timeoutDuration, &numOfReady, &numOfFault, &numOfNotRsp, pTimeoutList, pNotReadyList, id);
 
     numOfNotReady = (int32_t)taosArrayGetSize(pNotReadyList);
     numOfTimeout = (int32_t)taosArrayGetSize(pTimeoutList);
 
     // fault tasks detected, not try anymore
-    ASSERT((numOfReady + numOfFault + numOfNotReady + numOfTimeout + numOfNotRsp) == total);
+    bool jumpOut = false;
+    if ((numOfReady + numOfFault + numOfNotReady + numOfTimeout + numOfNotRsp) != total) {
+      int32_t ref = atomic_sub_fetch_32(&pTask->status.timerActive, 1);
+
+      stError(
+          "s-task:%s vgId:%d internal error in handling the check downstream procedure, rsp number is inconsistent, "
+          "stop rspMonitor tmr, total:%d, notRsp:%d, notReady:%d, fault:%d, timeout:%d, ready:%d ref:%d",
+          id, vgId, total, numOfNotRsp, numOfNotReady, numOfFault, numOfTimeout, numOfReady, ref);
+      jumpOut = true;
+    }
+
     if (numOfFault > 0) {
       int32_t ref = atomic_sub_fetch_32(&pTask->status.timerActive, 1);
       stDebug(
           "s-task:%s status:%s vgId:%d all rsp. quit from monitor rsp tmr, since vnode-transfer/leader-change/restart "
           "detected, total:%d, notRsp:%d, notReady:%d, fault:%d, timeout:%d, ready:%d ref:%d",
-          id, pStat.name, vgId, total, numOfNotRsp, numOfNotReady, numOfFault, numOfTimeout, numOfReady, ref);
+          id, state.name, vgId, total, numOfNotRsp, numOfNotReady, numOfFault, numOfTimeout, numOfReady, ref);
+      jumpOut = true;
+    }
 
+    if (jumpOut) {
       streamTaskCompleteCheckRsp(pInfo, false, id);
       streamMutexUnlock(&pInfo->checkInfoLock);
       streamMetaReleaseTask(pMeta, pTask);
@@ -776,7 +789,7 @@ void rspMonitorFn(void* param, void* tmrId) {
       return;
     }
   } else {  // unexpected status
-    stError("s-task:%s unexpected task status:%s during waiting for check rsp", id, pStat.name);
+    stError("s-task:%s unexpected task status:%s during waiting for check rsp", id, state.name);
   }
 
   // checking of downstream tasks has been stopped by other threads
@@ -785,7 +798,7 @@ void rspMonitorFn(void* param, void* tmrId) {
     stDebug(
         "s-task:%s status:%s vgId:%d stopped by other threads to check downstream process, total:%d, notRsp:%d, "
         "notReady:%d, fault:%d, timeout:%d, ready:%d ref:%d",
-        id, pStat.name, vgId, total, numOfNotRsp, numOfNotReady, numOfFault, numOfTimeout, numOfReady, ref);
+        id, state.name, vgId, total, numOfNotRsp, numOfNotReady, numOfFault, numOfTimeout, numOfReady, ref);
 
     streamTaskCompleteCheckRsp(pInfo, false, id);
     streamMutexUnlock(&pInfo->checkInfoLock);
diff --git a/source/libs/stream/src/streamCheckpoint.c b/source/libs/stream/src/streamCheckpoint.c
index 0ef7c2312a..1a0b1e8665 100644
--- a/source/libs/stream/src/streamCheckpoint.c
+++ b/source/libs/stream/src/streamCheckpoint.c
@@ -40,7 +40,10 @@ int32_t createChkptTriggerBlock(SStreamTask* pTask, int32_t checkpointType, int6
   pChkpoint->type = checkpointType;
   if (checkpointType == STREAM_INPUT__CHECKPOINT_TRIGGER && (pTask->info.taskLevel != TASK_LEVEL__SOURCE)) {
     pChkpoint->srcTaskId = srcTaskId;
-    ASSERT(srcTaskId != 0);
+    if (srcTaskId <= 0) {
+      stDebug("s-task:%s invalid src task id:%d for creating checkpoint trigger block", pTask->id.idStr, srcTaskId);
+      return TSDB_CODE_INVALID_PARA;
+    }
   }
 
   SSDataBlock* pBlock = taosMemoryCalloc(1, sizeof(SSDataBlock));
@@ -189,10 +192,13 @@ int32_t streamTaskSendCheckpointTriggerMsg(SStreamTask* pTask, int32_t dstTaskId
 int32_t continueDispatchCheckpointTriggerBlock(SStreamDataBlock* pBlock, SStreamTask* pTask) {
   pBlock->srcTaskId = pTask->id.taskId;
   pBlock->srcVgId = pTask->pMeta->vgId;
+  if (pTask->chkInfo.pActiveInfo->dispatchTrigger == true) {
+    stError("s-task:%s already dispatch checkpoint-trigger, not dispatch again", pTask->id.idStr);
+    return 0;
+  }
 
   int32_t code = taosWriteQitem(pTask->outputq.queue->pQueue, pBlock);
   if (code == 0) {
-    ASSERT(pTask->chkInfo.pActiveInfo->dispatchTrigger == false);
     code = streamDispatchStreamBlock(pTask);
   } else {
     stError("s-task:%s failed to put checkpoint into outputQ, code:%s", pTask->id.idStr, tstrerror(code));
@@ -593,9 +599,16 @@ int32_t streamTaskUpdateTaskCheckpointInfo(SStreamTask* pTask, bool restored, SV
     }
   }
 
-  ASSERT(pInfo->checkpointId <= pReq->checkpointId && pInfo->checkpointVer <= pReq->checkpointVer &&
+  bool valid = (pInfo->checkpointId <= pReq->checkpointId && pInfo->checkpointVer <= pReq->checkpointVer &&
          pInfo->processedVer <= pReq->checkpointVer);
 
+  if (!valid) {
+    stFatal("invalid checkpoint id check, current checkpointId:%" PRId64 " checkpointVer:%" PRId64
+            " processedVer:%" PRId64 " req checkpointId:%" PRId64 " checkpointVer:%" PRId64,
+            pInfo->checkpointId, pInfo->checkpointVer, pInfo->processedVer, pReq->checkpointId, pReq->checkpointVer);
+    return TSDB_CODE_STREAM_INTERNAL_ERROR;
+  }
+
   // update only it is in checkpoint status, or during restore procedure.
   if (pStatus.state == TASK_STATUS__CK || (!restored)) {
     pInfo->checkpointId = pReq->checkpointId;
@@ -1102,7 +1115,10 @@ void streamTaskInitTriggerDispatchInfo(SStreamTask* pTask) {
   streamMutexLock(&pInfo->lock);
 
   // outputQ should be empty here
-  ASSERT(streamQueueGetNumOfUnAccessedItems(pTask->outputq.queue) == 0);
+  if (streamQueueGetNumOfUnAccessedItems(pTask->outputq.queue) > 0) {
+    stFatal("s-task:%s items are still in outputQ, failed to init trigger dispatch info", pTask->id.idStr);
+    return;
+  }
 
   pInfo->dispatchTrigger = true;
   if (pTask->outputInfo.type == TASK_OUTPUT__FIXED_DISPATCH) {
@@ -1375,9 +1391,7 @@ int32_t streamTaskSendNegotiateChkptIdMsg(SStreamTask* pTask) {
     pTask->pBackend = NULL;
   }
 
-  ASSERT(pTask->pBackend == NULL);
   pTask->status.requireConsensusChkptId = true;
-
   stDebug("s-task:%s set the require consensus-checkpointId flag", id);
   return 0;
 }
diff --git a/source/libs/stream/src/streamData.c b/source/libs/stream/src/streamData.c
index 0602bf9334..d85435d21c 100644
--- a/source/libs/stream/src/streamData.c
+++ b/source/libs/stream/src/streamData.c
@@ -33,7 +33,6 @@ int32_t createStreamBlockFromDispatchMsg(const SStreamDispatchReq* pReq, int32_t
     return code;
   }
 
-  ASSERT((pReq->blockNum == taosArrayGetSize(pReq->data)) && (pReq->blockNum == taosArrayGetSize(pReq->dataLen)));
   for (int32_t i = 0; i < blockNum; i++) {
     SRetrieveTableRsp* pRetrieve = (SRetrieveTableRsp*)taosArrayGetP(pReq->data, i);
     SSDataBlock* pDataBlock = taosArrayGet(pArray, i);
@@ -52,7 +51,6 @@ int32_t createStreamBlockFromDispatchMsg(const SStreamDispatchReq* pReq, int32_t
       }
 
       int32_t len = tsDecompressString(pInput, compLen, 1, p, fullLen, ONE_STAGE_COMP, NULL, 0);
-      ASSERT(len == fullLen);
       pInput = p;
     }
 
diff --git a/source/libs/stream/src/streamDispatch.c b/source/libs/stream/src/streamDispatch.c
index bf64af6558..918a6b6cb1 100644
--- a/source/libs/stream/src/streamDispatch.c
+++ b/source/libs/stream/src/streamDispatch.c
@@ -254,7 +254,11 @@ static SStreamDispatchReq* createDispatchDataReq(SStreamTask* pTask, const SStre
   int32_t type = pTask->outputInfo.type;
   int32_t num = streamTaskGetNumOfDownstream(pTask);
 
-  ASSERT(type == TASK_OUTPUT__SHUFFLE_DISPATCH || type == TASK_OUTPUT__FIXED_DISPATCH);
+  if(type != TASK_OUTPUT__SHUFFLE_DISPATCH && type != TASK_OUTPUT__FIXED_DISPATCH) {
+    terrno = TSDB_CODE_INVALID_PARA;
+    stError("s-task:%s invalid dispatch type:%d not dispatch data", pTask->id.idStr, type);
+    return NULL;
+  }
 
   SStreamDispatchReq* pReqs = taosMemoryCalloc(num, sizeof(SStreamDispatchReq));
   if (pReqs == NULL) {
@@ -279,7 +283,7 @@ static SStreamDispatchReq* createDispatchDataReq(SStreamTask* pTask, const SStre
         return NULL;
       }
     }
-  } else {
+  } else {   // shuffle dispatch
     int32_t numOfBlocks = taosArrayGetSize(pData->blocks);
     int32_t downstreamTaskId = pTask->outputInfo.fixedDispatcher.taskId;
 
diff --git a/source/libs/stream/src/streamMsg.c b/source/libs/stream/src/streamMsg.c
index 6fe2d818b3..8105614d76 100644
--- a/source/libs/stream/src/streamMsg.c
+++ b/source/libs/stream/src/streamMsg.c
@@ -16,6 +16,7 @@
 #include "streamMsg.h"
 #include "os.h"
 #include "tstream.h"
+#include "streamInt.h"
 
 int32_t tEncodeStreamEpInfo(SEncoder* pEncoder, const SStreamUpstreamEpInfo* pInfo) {
   if (tEncodeI32(pEncoder, pInfo->taskId) < 0) return -1;
@@ -229,8 +230,12 @@ int32_t tEncodeStreamDispatchReq(SEncoder* pEncoder, const SStreamDispatchReq* p
   if (tEncodeI32(pEncoder, pReq->upstreamRelTaskId) < 0) return -1;
   if (tEncodeI32(pEncoder, pReq->blockNum) < 0) return -1;
   if (tEncodeI64(pEncoder, pReq->totalLen) < 0) return -1;
-  ASSERT(taosArrayGetSize(pReq->data) == pReq->blockNum);
-  ASSERT(taosArrayGetSize(pReq->dataLen) == pReq->blockNum);
+
+  if (taosArrayGetSize(pReq->data) != pReq->blockNum || taosArrayGetSize(pReq->dataLen) != pReq->blockNum) {
+    stError("invalid dispatch req msg");
+    return TSDB_CODE_INVALID_MSG;
+  }
+
   for (int32_t i = 0; i < pReq->blockNum; i++) {
     int32_t* pLen = taosArrayGet(pReq->dataLen, i);
     void*    data = taosArrayGetP(pReq->data, i);
@@ -261,7 +266,6 @@ int32_t tDecodeStreamDispatchReq(SDecoder* pDecoder, SStreamDispatchReq* pReq) {
   if (tDecodeI32(pDecoder, &pReq->blockNum) < 0) return -1;
   if (tDecodeI64(pDecoder, &pReq->totalLen) < 0) return -1;
 
-  ASSERT(pReq->blockNum > 0);
   pReq->data = taosArrayInit(pReq->blockNum, sizeof(void*));
   pReq->dataLen = taosArrayInit(pReq->blockNum, sizeof(int32_t));
   for (int32_t i = 0; i < pReq->blockNum; i++) {
@@ -270,7 +274,10 @@ int32_t tDecodeStreamDispatchReq(SDecoder* pDecoder, SStreamDispatchReq* pReq) {
     void*    data;
     if (tDecodeI32(pDecoder, &len1) < 0) return -1;
     if (tDecodeBinaryAlloc(pDecoder, &data, &len2) < 0) return -1;
-    ASSERT(len1 == len2);
+
+    if (len1 != len2) {
+      return TSDB_CODE_INVALID_MSG;
+    }
 
     void* p = taosArrayPush(pReq->dataLen, &len1);
     if (p == NULL) {
diff --git a/source/libs/stream/src/streamQueue.c b/source/libs/stream/src/streamQueue.c
index 752101afbd..3703ed07aa 100644
--- a/source/libs/stream/src/streamQueue.c
+++ b/source/libs/stream/src/streamQueue.c
@@ -452,7 +452,9 @@ static void fillTokenBucket(STokenBucket* pBucket, const char* id) {
   int64_t now = taosGetTimestampMs();
 
   int64_t deltaToken = now - pBucket->tokenFillTimestamp;
-  ASSERT(pBucket->numOfToken >= 0);
+  if (pBucket->numOfToken < 0) {
+    return;
+  }
 
   int32_t incNum = (deltaToken / 1000.0) * pBucket->numRate;
   if (incNum > 0) {
diff --git a/source/libs/stream/src/streamSched.c b/source/libs/stream/src/streamSched.c
index e8c7be5204..585cf63cfc 100644
--- a/source/libs/stream/src/streamSched.c
+++ b/source/libs/stream/src/streamSched.c
@@ -22,9 +22,8 @@ static void streamTaskSchedHelper(void* param, void* tmrId);
 int32_t streamSetupScheduleTrigger(SStreamTask* pTask) {
   if (pTask->info.delaySchedParam != 0 && pTask->info.fillHistory == 0) {
     int32_t ref = atomic_add_fetch_32(&pTask->refCnt, 1);
-    ASSERT(ref == 2 && pTask->schedInfo.pDelayTimer == NULL);
-
-    stDebug("s-task:%s setup scheduler trigger, delay:%" PRId64 " ms", pTask->id.idStr, pTask->info.delaySchedParam);
+    stDebug("s-task:%s setup scheduler trigger, ref:%d delay:%" PRId64 " ms", pTask->id.idStr, ref,
+            pTask->info.delaySchedParam);
 
     pTask->schedInfo.pDelayTimer =
         taosTmrStart(streamTaskSchedHelper, (int32_t)pTask->info.delaySchedParam, pTask, streamTimer);
diff --git a/source/libs/stream/src/streamSnapshot.c b/source/libs/stream/src/streamSnapshot.c
index 9122af0e12..0390422623 100644
--- a/source/libs/stream/src/streamSnapshot.c
+++ b/source/libs/stream/src/streamSnapshot.c
@@ -441,7 +441,9 @@ int32_t streamSnapHandleInit(SStreamSnapHandle* pHandle, char* path, void* pMeta
 
     SBackendSnapFile2 snapFile = {0};
     code = streamBackendSnapInitFile(path, pSnap, &snapFile);
-    ASSERT(code == 0);
+    if (code) {
+      goto _err;
+    }
 
     void* p = taosArrayPush(pDbSnapSet, &snapFile);
     if (p == NULL) {
@@ -767,7 +769,10 @@ int32_t streamSnapWrite(SStreamSnapWriter* pWriter, uint8_t* pData, uint32_t nDa
     if (!taosIsDir(path)) {
       code = taosMulMkDir(path);
       stInfo("%s mkdir %s", STREAM_STATE_TRANSFER, path);
-      ASSERT(code == 0);
+      if (code) {
+        stError("s-task:0x%x failed to mkdir:%s", (int32_t) snapInfo.taskId, path);
+        return code;
+      }
     }
 
     pDbSnapFile->path = path;
diff --git a/source/libs/stream/src/streamStartHistory.c b/source/libs/stream/src/streamStartHistory.c
index 0dbb6ed454..e68c088b9a 100644
--- a/source/libs/stream/src/streamStartHistory.c
+++ b/source/libs/stream/src/streamStartHistory.c
@@ -53,10 +53,9 @@ static int32_t streamTaskSetReady(SStreamTask* pTask) {
             pTask->id.idStr, pTask->info.taskLevel, numOfUps, p.name);
   }
 
-  ASSERT(pTask->status.downstreamReady == 0);
   pTask->status.downstreamReady = 1;
-
   pTask->execInfo.readyTs = taosGetTimestampMs();
+
   int64_t el = (pTask->execInfo.readyTs - pTask->execInfo.checkTs);
   stDebug("s-task:%s all %d downstream ready, init completed, elapsed time:%" PRId64 "ms, task status:%s",
           pTask->id.idStr, numOfDowns, el, p.name);
@@ -212,8 +211,6 @@ int32_t streamLaunchFillHistoryTask(SStreamTask* pTask) {
   int64_t              now = taosGetTimestampMs();
   int32_t              code = 0;
 
-  ASSERT(hTaskId != 0);
-
   // check stream task status in the first place.
   SStreamTaskState pStatus = streamTaskGetStatus(pTask);
   if (pStatus.state != TASK_STATUS__READY && pStatus.state != TASK_STATUS__HALT &&
diff --git a/source/libs/stream/src/streamStartTask.c b/source/libs/stream/src/streamStartTask.c
index 99f4e84951..92aad2ece1 100644
--- a/source/libs/stream/src/streamStartTask.c
+++ b/source/libs/stream/src/streamStartTask.c
@@ -50,8 +50,7 @@ int32_t streamMetaStartAllTasks(SStreamMeta* pMeta) {
   SArray* pTaskList = NULL;
   code = prepareBeforeStartTasks(pMeta, &pTaskList, now);
   if (code != TSDB_CODE_SUCCESS) {
-    ASSERT(pTaskList == NULL);
-    return TSDB_CODE_SUCCESS;
+    return TSDB_CODE_SUCCESS;  // ignore the error and return directly
   }
 
   // broadcast the check downstream tasks msg only for tasks with related fill-history tasks.
@@ -364,7 +363,10 @@ int32_t streamMetaStartOneTask(SStreamMeta* pMeta, int64_t streamId, int32_t tas
     return TSDB_CODE_STREAM_TASK_IVLD_STATUS;
   }
 
-  ASSERT(pTask->status.downstreamReady == 0);
+  if(pTask->status.downstreamReady != 0) {
+    stFatal("s-task:0x%x downstream should be not ready, but it ready here, internal error happens", taskId);
+    return TSDB_CODE_STREAM_INTERNAL_ERROR;
+  }
 
   // avoid initialization and destroy running concurrently.
   streamMutexLock(&pTask->lock);
diff --git a/source/libs/stream/src/streamTaskSm.c b/source/libs/stream/src/streamTaskSm.c
index 8fd26dda27..46fb7a521d 100644
--- a/source/libs/stream/src/streamTaskSm.c
+++ b/source/libs/stream/src/streamTaskSm.c
@@ -168,9 +168,7 @@ static STaskStateTrans* streamTaskFindTransform(ETaskStatus state, const EStream
   }
 
   if (isInvalidStateTransfer(state, event)) {
-    return NULL;
-  } else {
-    ASSERT(0);
+    stError("invalid state transfer %d, handle event:%s", state, GET_EVT_NAME(event));
   }
 
   return NULL;
@@ -182,8 +180,6 @@ static int32_t doHandleWaitingEvent(SStreamTaskSM* pSM, const char* pEventName,
   stDebug("s-task:%s handle event:%s completed, elapsed time:%" PRId64 "ms state:%s -> %s", pTask->id.idStr,
           pEventName, el, pSM->prev.state.name, pSM->current.name);
 
-  ASSERT(taosArrayGetSize(pSM->pWaitingEventList) == 1);
-
   SFutureHandleEventInfo* pEvtInfo = taosArrayGet(pSM->pWaitingEventList, 0);
   if (pEvtInfo == NULL) {
     return terrno;
@@ -501,8 +497,11 @@ int32_t streamTaskOnHandleEventSuccess(SStreamTaskSM* pSM, EStreamTaskEvent even
   STaskStateTrans* pTrans = pSM->pActiveTrans;
   if (pTrans == NULL) {
     ETaskStatus s = pSM->current.state;
-    ASSERT(s == TASK_STATUS__DROPPING || s == TASK_STATUS__PAUSE || s == TASK_STATUS__STOP ||
-           s == TASK_STATUS__UNINIT || s == TASK_STATUS__READY);
+
+    if (s != TASK_STATUS__DROPPING && s != TASK_STATUS__PAUSE && s != TASK_STATUS__STOP &&
+           s != TASK_STATUS__UNINIT && s != TASK_STATUS__READY) {
+      stError("s-task:%s invalid task status:%s on handling event:%s success", id, pSM->current.name, GET_EVT_NAME(pSM->prev.evt));
+    }
 
     // the pSM->prev.evt may be 0, so print string is not appropriate.
     stDebug("s-task:%s event:%s handled failed, current status:%s, trigger event:%s", id, GET_EVT_NAME(event),
diff --git a/source/libs/stream/src/streamTimer.c b/source/libs/stream/src/streamTimer.c
index 8f2fc83b72..b6275c0eb1 100644
--- a/source/libs/stream/src/streamTimer.c
+++ b/source/libs/stream/src/streamTimer.c
@@ -57,6 +57,9 @@ int32_t streamCleanBeforeQuitTmr(SStreamTmrInfo* pInfo, SStreamTask* pTask) {
   atomic_store_8(&pInfo->isActive, 0);
 
   int32_t ref = atomic_sub_fetch_32(&pTask->status.timerActive, 1);
-  ASSERT(ref >= 0);
+  if (ref < 0) {
+    stFatal("invalid task timer ref value:%d, %s", ref, pTask->id.idStr);
+  }
+
   return ref;
 }
\ No newline at end of file
diff --git a/source/libs/stream/src/streamUpdate.c b/source/libs/stream/src/streamUpdate.c
index bc2253d4bd..8e32822fb7 100644
--- a/source/libs/stream/src/streamUpdate.c
+++ b/source/libs/stream/src/streamUpdate.c
@@ -573,7 +573,7 @@ int32_t updateInfoDeserialize(void* buf, int32_t bufLen, SUpdateInfo* pInfo) {
   if (tDecodeI32(&decoder, &size) < 0) return -1;
   pInfo->pTsBuckets = taosArrayInit(size, sizeof(TSKEY));
   QUERY_CHECK_NULL(pInfo->pTsBuckets, code, lino, _error, terrno);
-  
+
   TSKEY ts = INT64_MIN;
   for (int32_t i = 0; i < size; i++) {
     if (tDecodeI64(&decoder, &ts) < 0) return -1;
diff --git a/source/util/src/terror.c b/source/util/src/terror.c
index 1d2e2357d1..a58baf5883 100644
--- a/source/util/src/terror.c
+++ b/source/util/src/terror.c
@@ -809,6 +809,8 @@ TAOS_DEFINE_ERROR(TSDB_CODE_STREAM_TASK_NOT_EXIST,          "Stream task not exi
 TAOS_DEFINE_ERROR(TSDB_CODE_STREAM_EXEC_CANCELLED,          "Stream task exec cancelled")
 TAOS_DEFINE_ERROR(TSDB_CODE_STREAM_INVALID_STATETRANS,      "Invalid task state to handle event")
 TAOS_DEFINE_ERROR(TSDB_CODE_STREAM_TASK_IVLD_STATUS,        "Invalid task status to proceed")
+TAOS_DEFINE_ERROR(TSDB_CODE_STREAM_INTERNAL_ERROR,         "Stream internal error")
+TAOS_DEFINE_ERROR(TSDB_CODE_STREAM_NOT_LEADER,              "Stream task not on leader vnode")
 
 // TDLite
 TAOS_DEFINE_ERROR(TSDB_CODE_TDLITE_IVLD_OPEN_FLAGS,         "Invalid TDLite open flags")