diff --git a/source/libs/stream/src/streamExec.c b/source/libs/stream/src/streamExec.c
index d3ab7e820a..cbe7b95bf0 100644
--- a/source/libs/stream/src/streamExec.c
+++ b/source/libs/stream/src/streamExec.c
@@ -364,14 +364,15 @@ static int32_t streamDoTransferStateToStreamTask(SStreamTask* pTask) {
 
   // 7. pause allowed.
   streamTaskEnablePause(pStreamTask);
-  if (taosQueueEmpty(pTask->inputQueue->queue)) {
+  if (taosQueueEmpty(pStreamTask->inputQueue->queue)) {
     SStreamRefDataBlock* pItem = taosAllocateQitem(sizeof(SStreamRefDataBlock), DEF_QITEM, 0);;
     SSDataBlock* pDelBlock = createSpecialDataBlock(STREAM_DELETE_DATA);
     pDelBlock->info.rows = 0;
     pDelBlock->info.version = 0;
     pItem->type = STREAM_INPUT__REF_DATA_BLOCK;
     pItem->pBlock = pDelBlock;
-    tAppendDataToInputQueue(pTask, (SStreamQueueItem*)pItem);
+    int32_t code = tAppendDataToInputQueue(pStreamTask, (SStreamQueueItem*)pItem);
+    qDebug("s-task:%s append dummy delete block,res:%d", pStreamTask->id.idStr, code);
   }
 
   streamSchedExec(pStreamTask);