diff --git a/source/libs/executor/src/scanoperator.c b/source/libs/executor/src/scanoperator.c
index a15b128a99..8e8e7d74f6 100644
--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -2766,7 +2766,7 @@ _error:
   return NULL;
 }
 
-static SSDataBlock* getTableDataBlockImpl(void* param) {
+static SSDataBlock* getBlockForTableMergeScan(void* param) {
   STableMergeScanSortSourceParam* source = param;
   SOperatorInfo*                  pOperator = source->pOperator;
   STableMergeScanInfo*            pInfo = pOperator->info;
@@ -2784,6 +2784,7 @@ static SSDataBlock* getTableDataBlockImpl(void* param) {
     code = pAPI->tsdReader.tsdNextDataBlock(reader, &hasNext);
     if (code != 0) {
       pAPI->tsdReader.tsdReaderReleaseDataBlock(reader);
+      qError("table merge scan fetch next data block error code: %d, %s", code, GET_TASKID(pTaskInfo));
       T_LONG_JMP(pTaskInfo->env, code);
     }
 
@@ -2792,8 +2793,9 @@ static SSDataBlock* getTableDataBlockImpl(void* param) {
     }
 
     if (isTaskKilled(pTaskInfo)) {
+      qInfo("table merge scan fetch next data block found task killed. %s", GET_TASKID(pTaskInfo));
       pAPI->tsdReader.tsdReaderReleaseDataBlock(reader);
-      T_LONG_JMP(pTaskInfo->env, pTaskInfo->code);
+      break;
     }
 
     // process this data block based on the probabilities
@@ -2806,6 +2808,7 @@ static SSDataBlock* getTableDataBlockImpl(void* param) {
     code = loadDataBlock(pOperator, &pInfo->base, pBlock, &status);
     //    code = loadDataBlockFromOneTable(pOperator, pTableScanInfo, pBlock, &status);
     if (code != TSDB_CODE_SUCCESS) {
+      qInfo("table merge scan load datablock code %d, %s", code, GET_TASKID(pTaskInfo));
       T_LONG_JMP(pTaskInfo->env, code);
     }
 
@@ -2896,7 +2899,8 @@ int32_t startGroupTableMergeScan(SOperatorInfo* pOperator) {
                                           
     tsortSetMergeLimit(pInfo->pSortHandle, mergeLimit);
   }
-  tsortSetFetchRawDataFp(pInfo->pSortHandle, getTableDataBlockImpl, NULL, NULL);
+
+  tsortSetFetchRawDataFp(pInfo->pSortHandle, getBlockForTableMergeScan, NULL, NULL);
 
   // one table has one data block
   int32_t numOfTable = tableEndIdx - tableStartIdx + 1;
diff --git a/source/libs/executor/src/tsort.c b/source/libs/executor/src/tsort.c
index 7784bc0c94..0a8d7ee376 100644
--- a/source/libs/executor/src/tsort.c
+++ b/source/libs/executor/src/tsort.c
@@ -1049,12 +1049,24 @@ static int32_t createBlocksMergeSortInitialSources(SSortHandle* pHandle) {
     }
     if (pBlk == NULL) {
       break;
-    };
+    }
+
+    if (tsortIsClosed(pHandle)) {
+      tSimpleHashClear(mUidBlk);
+      for (int i = 0; i < taosArrayGetSize(aBlkSort); ++i) {
+        blockDataDestroy(taosArrayGetP(aBlkSort, i));
+      }
+      taosArrayClear(aBlkSort);
+      break;
+    }
   }
+
   tSimpleHashCleanup(mUidBlk);
   taosArrayDestroy(aBlkSort);
   tsortClearOrderdSource(pHandle->pOrderedSource, NULL, NULL);
-  taosArrayAddAll(pHandle->pOrderedSource, aExtSrc);
+  if (!tsortIsClosed(pHandle)) {
+    taosArrayAddAll(pHandle->pOrderedSource, aExtSrc);
+  }
   taosArrayDestroy(aExtSrc);
 
   pHandle->type = SORT_SINGLESOURCE_SORT;