diff --git a/source/libs/executor/inc/executorimpl.h b/source/libs/executor/inc/executorimpl.h
index be79054c1b1b5aa40cd566cc1a50553660ec7062..0b55eb4a457fbad294478e5b490fb1600903333c 100644
--- a/source/libs/executor/inc/executorimpl.h
+++ b/source/libs/executor/inc/executorimpl.h
@@ -881,6 +881,7 @@ SExprInfo*   createExpr(SNodeList* pNodeList, int32_t* numOfExprs);
 void copyResultrowToDataBlock(SExprInfo* pExprInfo, int32_t numOfExprs, SResultRow* pRow, SqlFunctionCtx* pCtx,
                               SSDataBlock* pBlock, const int32_t* rowEntryOffset, SExecTaskInfo* pTaskInfo);
 void doUpdateNumOfRows(SqlFunctionCtx* pCtx, SResultRow* pRow, int32_t numOfExprs, const int32_t* rowEntryOffset);
+void doClearBufferedBlocks(SStreamScanInfo* pInfo);
 
 #ifdef __cplusplus
 }
diff --git a/source/libs/executor/src/executor.c b/source/libs/executor/src/executor.c
index c2bf001c86d4af8fffccd544c2b4de70798f870a..d8e7c25bbb31667ef8392cedabf8fb2ffee110da 100644
--- a/source/libs/executor/src/executor.c
+++ b/source/libs/executor/src/executor.c
@@ -93,6 +93,17 @@ static int32_t doSetStreamOpOpen(SOperatorInfo* pOperator, char* id) {
   return 0;
 }
 
+static void clearStreamBlock(SOperatorInfo* pOperator) {
+  if (pOperator->operatorType != QUERY_NODE_PHYSICAL_PLAN_STREAM_SCAN) {
+    if (pOperator->numOfDownstream == 1) {
+      return clearStreamBlock(pOperator->pDownstream[0]);
+    }
+  } else {
+    SStreamScanInfo* pInfo = pOperator->info;
+    doClearBufferedBlocks(pInfo);
+  }
+}
+
 static int32_t doSetStreamBlock(SOperatorInfo* pOperator, void* input, size_t numOfBlocks, int32_t type, char* id) {
   if (pOperator->operatorType != QUERY_NODE_PHYSICAL_PLAN_STREAM_SCAN) {
     if (pOperator->numOfDownstream == 0) {
@@ -607,7 +618,8 @@ int32_t qExecTask(qTaskInfo_t tinfo, SSDataBlock** pRes, uint64_t* useconds) {
     pTaskInfo->cost.start = taosGetTimestampUs();
   }
 
-  if (isTaskKilled(pTaskInfo)) {
+  if (isTaskKilled(pTaskInfo) && pTaskInfo->code != TSDB_CODE_QRY_IN_EXEC) {
+    clearStreamBlock(pTaskInfo->pRoot);
     atomic_store_64(&pTaskInfo->owner, 0);
     qDebug("%s already killed, abort", GET_TASKID(pTaskInfo));
     return TSDB_CODE_SUCCESS;
diff --git a/source/libs/executor/src/scanoperator.c b/source/libs/executor/src/scanoperator.c
index 7961d5518a560b59d568cc6122479202aac9aa21..38822a4565b805a6189395bd614f39389ecc2296 100644
--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -945,7 +945,7 @@ SOperatorInfo* createTableSeqScanOperatorInfo(void* pReadHandle, SExecTaskInfo*
   return pOperator;
 }
 
-static FORCE_INLINE void doClearBufferedBlocks(SStreamScanInfo* pInfo) {
+FORCE_INLINE void doClearBufferedBlocks(SStreamScanInfo* pInfo) {
   taosArrayClear(pInfo->pBlockLists);
   pInfo->validBlockIndex = 0;
 }