diff --git a/source/libs/executor/src/scanoperator.c b/source/libs/executor/src/scanoperator.c
index 89db5761c2..2dcb555834 100644
--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -2829,29 +2829,31 @@ int32_t stopGroupTableMergeScan(SOperatorInfo* pOperator) {
   STableMergeScanInfo* pInfo = pOperator->info;
   SExecTaskInfo*       pTaskInfo = pOperator->pTaskInfo;
 
-  tsortDestroySortHandle(pInfo->pSortHandle);
+  size_t numReaders = taosArrayGetSize(pInfo->dataReaders);
+
+  for (int32_t i = 0; i < numReaders; ++i) {
+    STableMergeScanSortSourceParam* param = taosArrayGet(pInfo->sortSourceParams, i);
+    blockDataDestroy(param->inputBlock);
+  }
   taosArrayClear(pInfo->sortSourceParams);
 
-  for (int32_t i = 0; i < taosArrayGetSize(pInfo->dataReaders); ++i) {
+  tsortDestroySortHandle(pInfo->pSortHandle);
+
+  for (int32_t i = 0; i < numReaders; ++i) {
     STsdbReader* reader = taosArrayGetP(pInfo->dataReaders, i);
     tsdbReaderClose(reader);
   }
-
   taosArrayDestroy(pInfo->dataReaders);
   pInfo->dataReaders = NULL;
   return TSDB_CODE_SUCCESS;
 }
 
-SSDataBlock* getSortedTableMergeScanBlockData(SSortHandle* pHandle, int32_t capacity, SOperatorInfo* pOperator) {
+SSDataBlock* getSortedTableMergeScanBlockData(SSortHandle* pHandle, SSDataBlock* pResBlock, int32_t capacity, SOperatorInfo* pOperator) {
   STableMergeScanInfo* pInfo = pOperator->info;
   SExecTaskInfo*       pTaskInfo = pOperator->pTaskInfo;
 
-  SSDataBlock* p = tsortGetSortedDataBlock(pHandle);
-  if (p == NULL) {
-    return NULL;
-  }
-
-  blockDataEnsureCapacity(p, capacity);
+  blockDataCleanup(pResBlock);
+  blockDataEnsureCapacity(pResBlock, capacity);
 
   while (1) {
     STupleHandle* pTupleHandle = tsortNextTuple(pHandle);
@@ -2859,14 +2861,15 @@ SSDataBlock* getSortedTableMergeScanBlockData(SSortHandle* pHandle, int32_t capa
       break;
     }
 
-    appendOneRowToDataBlock(p, pTupleHandle);
-    if (p->info.rows >= capacity) {
+    appendOneRowToDataBlock(pResBlock, pTupleHandle);
+    if (pResBlock->info.rows >= capacity) {
       break;
     }
   }
 
-  qDebug("%s get sorted row blocks, rows:%d", GET_TASKID(pTaskInfo), p->info.rows);
-  return (p->info.rows > 0) ? p : NULL;
+
+  qDebug("%s get sorted row blocks, rows:%d", GET_TASKID(pTaskInfo), pResBlock->info.rows);
+  return (pResBlock->info.rows > 0) ? pResBlock : NULL;
 }
 
 SSDataBlock* doTableMergeScan(SOperatorInfo* pOperator) {
@@ -2895,7 +2898,7 @@ SSDataBlock* doTableMergeScan(SOperatorInfo* pOperator) {
   }
   SSDataBlock* pBlock = NULL;
   while (pInfo->tableStartIndex < tableListSize) {
-    pBlock = getSortedTableMergeScanBlockData(pInfo->pSortHandle, pOperator->resultInfo.capacity, pOperator);
+    pBlock = getSortedTableMergeScanBlockData(pInfo->pSortHandle, pInfo->pResBlock, pOperator->resultInfo.capacity, pOperator);
     if (pBlock != NULL) {
       pBlock->info.groupId = pInfo->groupId;
       pOperator->resultInfo.totalRows += pBlock->info.rows;
@@ -2919,6 +2922,7 @@ SSDataBlock* doTableMergeScan(SOperatorInfo* pOperator) {
 void destroyTableMergeScanOperatorInfo(void* param, int32_t numOfOutput) {
   STableMergeScanInfo* pTableScanInfo = (STableMergeScanInfo*)param;
   cleanupQueryTableDataCond(&pTableScanInfo->cond);
+  taosArrayDestroy(pTableScanInfo->sortSourceParams);
 
   for (int32_t i = 0; i < taosArrayGetSize(pTableScanInfo->dataReaders); ++i) {
     STsdbReader* reader = taosArrayGetP(pTableScanInfo->dataReaders, i);