diff --git a/include/util/taoserror.h b/include/util/taoserror.h
index 1911c48d26..58c8c55a53 100644
--- a/include/util/taoserror.h
+++ b/include/util/taoserror.h
@@ -958,6 +958,7 @@ 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/libs/stream/src/streamCheckpoint.c b/source/libs/stream/src/streamCheckpoint.c
index 0ef7c2312a..17edc3c30b 100644
--- a/source/libs/stream/src/streamCheckpoint.c
+++ b/source/libs/stream/src/streamCheckpoint.c
@@ -37,10 +37,14 @@ int32_t createChkptTriggerBlock(SStreamTask* pTask, int32_t checkpointType, int6
     return code;
   }
 
+  if (srcTaskId <= 0) {
+    stDebug("s-task:0x%x invalid src task id:%d for creating checkpoint trigger block", pTask->id.idStr, srcTaskId);
+    return TSDB_CODE_INVALID_PARA;
+  }
+
   pChkpoint->type = checkpointType;
   if (checkpointType == STREAM_INPUT__CHECKPOINT_TRIGGER && (pTask->info.taskLevel != TASK_LEVEL__SOURCE)) {
     pChkpoint->srcTaskId = srcTaskId;
-    ASSERT(srcTaskId != 0);
   }
 
   SSDataBlock* pBlock = taosMemoryCalloc(1, sizeof(SSDataBlock));
@@ -189,10 +193,13 @@ 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));
@@ -593,8 +600,11 @@ 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("");
+  }
 
   // update only it is in checkpoint status, or during restore procedure.
   if (pStatus.state == TASK_STATUS__CK || (!restored)) {
@@ -1102,7 +1112,10 @@ 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 +1388,7 @@ 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/streamMsg.c b/source/libs/stream/src/streamMsg.c
index 6fe2d818b3..586f9ac692 100644
--- a/source/libs/stream/src/streamMsg.c
+++ b/source/libs/stream/src/streamMsg.c
@@ -229,8 +229,11 @@ 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) {
+    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 +264,6 @@ 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 +272,10 @@ 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..a8ed0f7639 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:%d", 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;
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 6a2c85323a..1ac14defa9 100644
--- a/source/libs/stream/src/streamUpdate.c
+++ b/source/libs/stream/src/streamUpdate.c
@@ -564,7 +564,10 @@ _end:
 int32_t updateInfoDeserialize(void* buf, int32_t bufLen, SUpdateInfo* pInfo) {
   int32_t code = TSDB_CODE_SUCCESS;
   int32_t lino = 0;
-  ASSERT(pInfo);
+  if (pInfo == NULL) {
+    return TSDB_CODE_INVALID_PARA;
+  }
+
   SDecoder decoder = {0};
   tDecoderInit(&decoder, buf, bufLen);
   if (tStartDecode(&decoder) < 0) return -1;
@@ -623,7 +626,11 @@ int32_t updateInfoDeserialize(void* buf, int32_t bufLen, SUpdateInfo* pInfo) {
     code = taosHashPut(pInfo->pMap, &uid, sizeof(uint64_t), pVal, valSize);
     QUERY_CHECK_CODE(code, lino, _error);
   }
-  ASSERT(mapSize == taosHashGetSize(pInfo->pMap));
+
+  if (mapSize != taosHashGetSize(pInfo->pMap)) {
+    return TSDB_CODE_INVALID_MSG;
+  }
+
   if (tDecodeU64(&decoder, &pInfo->maxDataVersion) < 0) return -1;
 
   if (tDecodeI32(&decoder, &pInfo->pkColLen) < 0) return -1;
diff --git a/source/util/src/tcompression.c b/source/util/src/tcompression.c
index 8402d2a658..bec9a5797d 100644
--- a/source/util/src/tcompression.c
+++ b/source/util/src/tcompression.c
@@ -252,7 +252,7 @@ int32_t l2ComressInitImpl_xz(char *lossyColumns, float fPrecision, double dPreci
 }
 int32_t l2CompressImpl_xz(const char *const input, const int32_t inputSize, char *const output, int32_t outputSize,
                           const char type, int8_t lvl) {
-  size_t len = FL2_compress(output + 1, outputSize - 1, input, inputSize, lvl);
+  size_t len = 0;//FL2_compress(output + 1, outputSize - 1, input, inputSize, lvl);
   if (len > inputSize) {
     output[0] = 0;
     memcpy(output + 1, input, inputSize);
@@ -264,7 +264,7 @@ int32_t l2CompressImpl_xz(const char *const input, const int32_t inputSize, char
 int32_t l2DecompressImpl_xz(const char *const input, const int32_t compressedSize, char *const output,
                             int32_t outputSize, const char type) {
   if (input[0] == 1) {
-    return FL2_decompress(output, outputSize, input + 1, compressedSize - 1);
+    return 0;//FL2_decompress(output, outputSize, input + 1, compressedSize - 1);
   } else if (input[0] == 0) {
     memcpy(output, input + 1, compressedSize - 1);
     return compressedSize - 1;
diff --git a/source/util/src/terror.c b/source/util/src/terror.c
index 396abf21a7..79f25bc8be 100644
--- a/source/util/src/terror.c
+++ b/source/util/src/terror.c
@@ -802,6 +802,8 @@ 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")