diff --git a/src/client/src/tscAsync.c b/src/client/src/tscAsync.c
index 14f242ddd44391985641e0c0edd32a0203941ad1..813c4561524d03456101f2ac0687ba3b0b095820 100644
--- a/src/client/src/tscAsync.c
+++ b/src/client/src/tscAsync.c
@@ -425,11 +425,10 @@ void tscTableMetaCallBack(void *param, TAOS_RES *res, int code) {
   
     if ((pQueryInfo->type & TSDB_QUERY_TYPE_STABLE_SUBQUERY) == TSDB_QUERY_TYPE_STABLE_SUBQUERY) {
       STableMetaInfo* pTableMetaInfo = tscGetMetaInfo(pQueryInfo, 0);
-      
-      code = tscGetTableMeta(pSql, pTableMetaInfo);
-      pRes->code = code;
-
-      if (code == TSDB_CODE_ACTION_IN_PROGRESS) return;
+      if (pTableMetaInfo->pTableMeta == NULL){
+        code = tscGetTableMeta(pSql, pTableMetaInfo);
+        assert(code == TSDB_CODE_SUCCESS);      
+      }     
       
       assert((tscGetNumOfTags(pTableMetaInfo->pTableMeta) != 0) && pTableMetaInfo->vgroupIndex >= 0 && pSql->param != NULL);
 
diff --git a/src/vnode/src/vnodeMain.c b/src/vnode/src/vnodeMain.c
index 77afb7bf294f38cbeb37c34770bb20368ab5611a..8d35be96409141625848c4be8c31550c16f49df1 100644
--- a/src/vnode/src/vnodeMain.c
+++ b/src/vnode/src/vnodeMain.c
@@ -265,10 +265,7 @@ void vnodeRelease(void *pVnodeRaw) {
   int32_t    vgId = pVnode->vgId;
 
   int32_t refCount = atomic_sub_fetch_32(&pVnode->refCount, 1);
-  if (refCount < 0) {
-    vTrace("vgId:%d, other thread is releasing vnode, refCount:%d", vgId, refCount);
-    return; // avoid two threads dec ref count
-  }
+  assert(refCount >= 0);
 
   if (refCount > 0) {
     vTrace("vgId:%d, release vnode, refCount:%d", vgId, refCount);