diff --git a/include/libs/stream/tstream.h b/include/libs/stream/tstream.h
index 4c68d1f667..8956801bd4 100644
--- a/include/libs/stream/tstream.h
+++ b/include/libs/stream/tstream.h
@@ -207,8 +207,6 @@ static FORCE_INLINE void streamQueueProcessFail(SStreamQueue* queue) {
   atomic_store_8(&queue->status, STREAM_QUEUE__FAILED);
 }
 
-static FORCE_INLINE void* streamQueueCurItem(SStreamQueue* queue) { return queue->qItem; }
-
 void* streamQueueNextItem(SStreamQueue* queue);
 
 SStreamDataSubmit2* streamDataSubmitNew(SPackedData submit, int32_t type);
diff --git a/source/libs/executor/src/executor.c b/source/libs/executor/src/executor.c
index 8bbbd3524d..434f2924d1 100644
--- a/source/libs/executor/src/executor.c
+++ b/source/libs/executor/src/executor.c
@@ -112,7 +112,7 @@ void resetTaskInfo(qTaskInfo_t tinfo) {
   clearStreamBlock(pTaskInfo->pRoot);
 }
 
-static int32_t doSetStreamBlock(SOperatorInfo* pOperator, void* input, size_t numOfBlocks, int32_t type, char* id) {
+static int32_t doSetStreamBlock(SOperatorInfo* pOperator, void* input, size_t numOfBlocks, int32_t type, const char* id) {
   if (pOperator->operatorType != QUERY_NODE_PHYSICAL_PLAN_STREAM_SCAN) {
     if (pOperator->numOfDownstream == 0) {
       qError("failed to find stream scan operator to set the input data block, %s" PRIx64, id);
@@ -129,7 +129,7 @@ static int32_t doSetStreamBlock(SOperatorInfo* pOperator, void* input, size_t nu
     pOperator->status = OP_NOT_OPENED;
 
     SStreamScanInfo* pInfo = pOperator->info;
-    qDebug("s-task set source blocks:%d %s", (int32_t)numOfBlocks, id);
+    qDebug("s-task:%s set source blocks:%d", id, (int32_t)numOfBlocks);
     ASSERT(pInfo->validBlockIndex == 0 && taosArrayGetSize(pInfo->pBlockLists) == 0);
 
     if (type == STREAM_INPUT__MERGED_SUBMIT) {
@@ -144,9 +144,7 @@ static int32_t doSetStreamBlock(SOperatorInfo* pOperator, void* input, size_t nu
     } else if (type == STREAM_INPUT__DATA_BLOCK) {
       for (int32_t i = 0; i < numOfBlocks; ++i) {
         SSDataBlock* pDataBlock = &((SSDataBlock*)input)[i];
-        SPackedData  tmp = {
-             .pDataBlock = pDataBlock,
-        };
+        SPackedData  tmp = { .pDataBlock = pDataBlock };
         taosArrayPush(pInfo->pBlockLists, &tmp);
       }
       pInfo->blockType = STREAM_INPUT__DATA_BLOCK;
diff --git a/source/libs/stream/src/stream.c b/source/libs/stream/src/stream.c
index 9a39bb09dc..0286df2a9a 100644
--- a/source/libs/stream/src/stream.c
+++ b/source/libs/stream/src/stream.c
@@ -345,6 +345,8 @@ int32_t tAppendDataToInputQueue(SStreamTask* pTask, SStreamQueueItem* pItem) {
   return 0;
 }
 
+static void* streamQueueCurItem(SStreamQueue* queue) { return queue->qItem; }
+
 void* streamQueueNextItem(SStreamQueue* queue) {
   int8_t dequeueFlag = atomic_exchange_8(&queue->status, STREAM_QUEUE__PROCESSING);
   if (dequeueFlag == STREAM_QUEUE__FAILED) {
diff --git a/source/libs/stream/src/streamData.c b/source/libs/stream/src/streamData.c
index 7fb35ad2ad..e574cdbe8a 100644
--- a/source/libs/stream/src/streamData.c
+++ b/source/libs/stream/src/streamData.c
@@ -159,7 +159,8 @@ SStreamQueueItem* streamMergeQueueItem(SStreamQueueItem* dst, SStreamQueueItem*
     return dst;
   } else if (dst->type == STREAM_INPUT__DATA_SUBMIT && pElem->type == STREAM_INPUT__DATA_SUBMIT) {
     SStreamMergedSubmit2* pMerged = streamMergedSubmitNew();
-    ASSERT(pMerged);
+    // todo handle error
+
     streamMergeSubmit(pMerged, (SStreamDataSubmit2*)dst);
     streamMergeSubmit(pMerged, (SStreamDataSubmit2*)pElem);
     taosFreeQitem(dst);
diff --git a/source/libs/stream/src/streamExec.c b/source/libs/stream/src/streamExec.c
index bd06f96798..ff51a5a6ae 100644
--- a/source/libs/stream/src/streamExec.c
+++ b/source/libs/stream/src/streamExec.c
@@ -66,7 +66,7 @@ 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), numOfblocks:%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;
@@ -259,9 +259,10 @@ int32_t streamExecForAll(SStreamTask* pTask) {
   int32_t code = 0;
   while (1) {
     int32_t batchSize = 1;
-    void*   pInput = NULL;
     int16_t times = 0;
 
+    SStreamQueueItem* pInput = NULL;
+
     // merge multiple input data if possible in the input queue.
     qDebug("s-task:%s start to extract data block from inputQ", pTask->id.idStr);
 
@@ -274,6 +275,7 @@ int32_t streamExecForAll(SStreamTask* pTask) {
           qDebug("===stream===try agian batchSize:%d", batchSize);
           continue;
         }
+
         qDebug("===stream===break batchSize:%d", batchSize);
         break;
       }
@@ -285,6 +287,7 @@ int32_t streamExecForAll(SStreamTask* pTask) {
           break;
         }
       } else {
+        // todo we need to sort the data block, instead of just appending into the array list.
         void* newRet = NULL;
         if ((newRet = streamMergeQueueItem(pInput, qItem)) == NULL) {
           streamQueueProcessFail(pTask->inputQueue);
@@ -304,6 +307,7 @@ int32_t streamExecForAll(SStreamTask* pTask) {
       if (pInput) {
         streamFreeQitem(pInput);
       }
+
       return 0;
     }
 
@@ -312,14 +316,14 @@ int32_t streamExecForAll(SStreamTask* pTask) {
     }
 
     if (pTask->taskLevel == TASK_LEVEL__SINK) {
-      ASSERT(((SStreamQueueItem*)pInput)->type == STREAM_INPUT__DATA_BLOCK);
+      ASSERT(pInput->type == STREAM_INPUT__DATA_BLOCK);
       qDebug("s-task:%s sink node start to sink result. numOfBlocks:%d", pTask->id.idStr, batchSize);
-      streamTaskOutput(pTask, pInput);
+      streamTaskOutput(pTask, (SStreamDataBlock*)pInput);
       continue;
     }
 
     SArray* pRes = taosArrayInit(0, sizeof(SSDataBlock));
-    qDebug("s-task:%s start to execute, numOfBlocks:%d", pTask->id.idStr, batchSize);
+    qDebug("s-task:%s start to execute, block batches:%d", pTask->id.idStr, batchSize);
 
     streamTaskExecImpl(pTask, pInput, pRes);