From 7555a645568ee9c91e80dcd21eeef42e4d1ed02e Mon Sep 17 00:00:00 2001
From: hjxilinx <hjxilinx@163.com>
Date: Mon, 2 Mar 2020 00:22:47 +0800
Subject: [PATCH] add assertion.

---
 src/system/detail/src/vnodeQueryImpl.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/system/detail/src/vnodeQueryImpl.c b/src/system/detail/src/vnodeQueryImpl.c
index f64bc86bf7..81946bf029 100644
--- a/src/system/detail/src/vnodeQueryImpl.c
+++ b/src/system/detail/src/vnodeQueryImpl.c
@@ -4951,6 +4951,7 @@ int32_t vnodeSTableQueryPrepare(SQInfo *pQInfo, SQuery *pQuery, void *param) {
  */
 void vnodeDecMeterRefcnt(SQInfo *pQInfo) {
   STableQuerySupportObj *pSupporter = pQInfo->pTableQuerySupporter;
+  assert(pSupporter->numOfMeters >= 1);
 
   if (pSupporter == NULL || pSupporter->numOfMeters == 1) {
     atomic_fetch_sub_32(&pQInfo->pObj->numOfQueries, 1);
-- 
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