diff --git a/source/libs/executor/src/executil.c b/source/libs/executor/src/executil.c
index 892f7948b4..9a03a0e1a5 100644
--- a/source/libs/executor/src/executil.c
+++ b/source/libs/executor/src/executil.c
@@ -435,6 +435,7 @@ int32_t isQualifiedTable(STableKeyInfo* info, SNode* pTagCond, void* metaHandle,
   code = nodesCloneNode(pTagCond, &pTagCondTmp);
   if (TSDB_CODE_SUCCESS != code) {
     *pQualified = false;
+    pAPI->metaReaderFn.clearReader(&mr);
     return code;
   }
   STransTagExprCtx ctx = {.code = 0, .pReader = &mr};
diff --git a/source/libs/executor/src/executor.c b/source/libs/executor/src/executor.c
index f908ef5984..3ecaf61193 100644
--- a/source/libs/executor/src/executor.c
+++ b/source/libs/executor/src/executor.c
@@ -372,11 +372,11 @@ static int32_t filterUnqualifiedTables(const SStreamScanInfo* pScanInfo, const S
   int32_t code = TSDB_CODE_SUCCESS;
   int32_t lino = 0;
   SArray* qa = taosArrayInit(4, sizeof(tb_uid_t));
-  QUERY_CHECK_NULL(qa, code, lino, _end, terrno);
+  QUERY_CHECK_NULL(qa, code, lino, _error, terrno);
   int32_t numOfUids = taosArrayGetSize(tableIdList);
   if (numOfUids == 0) {
     (*ppArrayRes) = qa;
-    goto _end;
+    goto _error;
   }
 
   STableScanInfo* pTableScanInfo = pScanInfo->pTableScanOp->info;
@@ -437,10 +437,11 @@ static int32_t filterUnqualifiedTables(const SStreamScanInfo* pScanInfo, const S
     QUERY_CHECK_NULL(tmp, code, lino, _end, terrno);
   }
 
+_end:
   pAPI->metaReaderFn.clearReader(&mr);
   (*ppArrayRes) = qa;
 
-_end:
+_error:
   if (code != TSDB_CODE_SUCCESS) {
     qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
   }
diff --git a/source/libs/executor/src/scanoperator.c b/source/libs/executor/src/scanoperator.c
index 12a3f79d8b..ce1a614613 100644
--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -643,6 +643,7 @@ int32_t addTagPseudoColumnData(SReadHandle* pHandle, const SExprInfo* pExpr, int
     h = taosLRUCacheLookup(pCache->pTableMetaEntryCache, &pBlock->info.id.uid, sizeof(pBlock->info.id.uid));
     if (h == NULL) {
       pHandle->api.metaReaderFn.initReader(&mr, pHandle->vnode, META_READER_LOCK, &pHandle->api.metaFn);
+      freeReader = true;
       code = pHandle->api.metaReaderFn.getEntryGetUidCache(&mr, pBlock->info.id.uid);
       if (code != TSDB_CODE_SUCCESS) {
         if (code == TSDB_CODE_PAR_TABLE_NOT_EXIST) {
@@ -664,7 +665,6 @@ int32_t addTagPseudoColumnData(SReadHandle* pHandle, const SExprInfo* pExpr, int
       QUERY_CHECK_CODE(code, lino, _end);
 
       val = *pVal;
-      freeReader = true;
     } else {
       pCache->cacheHit += 1;
       STableCachedVal* pVal = taosLRUCacheValue(pCache->pTableMetaEntryCache, h);
diff --git a/source/libs/executor/src/sysscanoperator.c b/source/libs/executor/src/sysscanoperator.c
index 77d302e4e3..016ec7cdb3 100644
--- a/source/libs/executor/src/sysscanoperator.c
+++ b/source/libs/executor/src/sysscanoperator.c
@@ -655,16 +655,20 @@ static SSDataBlock* sysTableScanUserCols(SOperatorInfo* pOperator) {
         }
         SSchemaWrapper* schemaWrapper = tCloneSSchemaWrapper(&smrSuperTable.me.stbEntry.schemaRow);
         if (smrSuperTable.me.stbEntry.schemaRow.pSchema) {
-          QUERY_CHECK_NULL(schemaWrapper, code, lino, _end, terrno);
+          if (schemaWrapper == NULL) {
+            code = terrno;
+            lino = __LINE__;
+            pAPI->metaReaderFn.clearReader(&smrSuperTable);
+            goto _end;
+          }
         }
         code = taosHashPut(pInfo->pSchema, &suid, sizeof(int64_t), &schemaWrapper, POINTER_BYTES);
         if (code == TSDB_CODE_DUP_KEY) {
           code = TSDB_CODE_SUCCESS;
         }
-        QUERY_CHECK_CODE(code, lino, _end);
-
         schemaRow = schemaWrapper;
         pAPI->metaReaderFn.clearReader(&smrSuperTable);
+        QUERY_CHECK_CODE(code, lino, _end);
       }
     } else if (pInfo->pCur->mr.me.type == TSDB_NORMAL_TABLE) {
       qDebug("sysTableScanUserCols cursor get normal table, %s", GET_TASKID(pTaskInfo));
@@ -789,11 +793,12 @@ static SSDataBlock* sysTableScanUserTags(SOperatorInfo* pOperator) {
 
     code = sysTableUserTagsFillOneTableTags(pInfo, &smrSuperTable, &smrChildTable, dbname, tableName, &numOfRows,
                                             dataBlock);
-    QUERY_CHECK_CODE(code, lino, _end);
 
     pAPI->metaReaderFn.clearReader(&smrSuperTable);
     pAPI->metaReaderFn.clearReader(&smrChildTable);
 
+    QUERY_CHECK_CODE(code, lino, _end);
+
     if (numOfRows > 0) {
       relocateAndFilterSysTagsScanResult(pInfo, numOfRows, dataBlock, pOperator->exprSupp.pFilterInfo, pTaskInfo);
       numOfRows = 0;
@@ -831,6 +836,8 @@ static SSDataBlock* sysTableScanUserTags(SOperatorInfo* pOperator) {
       pAPI->metaReaderFn.clearReader(&smrSuperTable);
       pAPI->metaFn.closeTableMetaCursor(pInfo->pCur);
       pInfo->pCur = NULL;
+      blockDataDestroy(dataBlock);
+      dataBlock = NULL;
       T_LONG_JMP(pTaskInfo->env, terrno);
     }
 
@@ -846,7 +853,15 @@ static SSDataBlock* sysTableScanUserTags(SOperatorInfo* pOperator) {
     } else {
       code = sysTableUserTagsFillOneTableTags(pInfo, &smrSuperTable, &pInfo->pCur->mr, dbname, tableName, &numOfRows,
                                               dataBlock);
-      QUERY_CHECK_CODE(code, lino, _end);
+      if (code != TSDB_CODE_SUCCESS) {
+        qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(code));
+        pAPI->metaReaderFn.clearReader(&smrSuperTable);
+        pAPI->metaFn.closeTableMetaCursor(pInfo->pCur);
+        pInfo->pCur = NULL;
+        blockDataDestroy(dataBlock);
+        dataBlock = NULL;
+        T_LONG_JMP(pTaskInfo->env, terrno);
+      }
     }
     pAPI->metaReaderFn.clearReader(&smrSuperTable);
   }