diff --git a/source/client/src/clientSml.c b/source/client/src/clientSml.c
index caebc457b4..52a68943bd 100644
--- a/source/client/src/clientSml.c
+++ b/source/client/src/clientSml.c
@@ -1120,7 +1120,7 @@ SSmlHandle *smlBuildSmlInfo(TAOS *taos) {
   info->maxTagKVs = taosArrayInit(8, sizeof(SSmlKv));
   info->preLineColKV = taosArrayInit(8, sizeof(SSmlKv));
 
-  if (NULL == info->pVgHash) {
+  if (NULL == info->pVgHash || NULL == info->childTables || NULL == info->superTables) {
     uError("create SSmlHandle failed");
     goto cleanup;
   }
@@ -1299,6 +1299,9 @@ int32_t smlClearForRerun(SSmlHandle *info) {
     oneSTable = (SSmlSTableMeta **)taosHashIterate(info->superTables, oneSTable);
   }
 
+  taosHashClear(info->childTables);
+  taosHashClear(info->superTables);
+
   if (!info->dataFormat) {
     if (unlikely(info->lines != NULL)) {
       uError("SML:0x%" PRIx64 " info->lines != NULL", info->id);