diff --git a/src/mnode/src/mnodeVgroup.c b/src/mnode/src/mnodeVgroup.c
index c0ab75cadb29f9cf6deebdb29d02871e2de668b1..da902dd67bca035303ee4a38780fc9322d02b801 100644
--- a/src/mnode/src/mnodeVgroup.c
+++ b/src/mnode/src/mnodeVgroup.c
@@ -844,6 +844,9 @@ static int32_t mnodeRetrieveStatus(SShowObj *pShow, char *data, int32_t rows, vo
       nAvailble++;
     else
       nUnAvailble++;
+    
+    // releae pVgroup ref
+    mnodeDecVgroupRef(pVgroup);  
   }
 
   // set col data
diff --git a/src/query/src/qTableMeta.c b/src/query/src/qTableMeta.c
index 6b459b1434b02feca06e7179f647afa75f27458d..90686142adfd965726ca3872f53ed77af07423ce 100644
--- a/src/query/src/qTableMeta.c
+++ b/src/query/src/qTableMeta.c
@@ -72,7 +72,7 @@ SSchema* tscGetColumnSchemaById(STableMeta* pTableMeta, int16_t colId) {
 }
 
 STableMeta* tscCreateTableMetaFromMsg(STableMetaMsg* pTableMetaMsg) {
-  //assert(pTableMetaMsg != NULL && pTableMetaMsg->numOfColumns >= 2);
+  assert(pTableMetaMsg != NULL && pTableMetaMsg->numOfColumns >= 1);
 
   int32_t schemaSize = (pTableMetaMsg->numOfColumns + pTableMetaMsg->numOfTags) * sizeof(SSchema);
   STableMeta* pTableMeta = calloc(1, sizeof(STableMeta) + schemaSize);