From a693b9a2d6ad0e5831cf22d8a6862a9cf24758fd Mon Sep 17 00:00:00 2001
From: Haojun Liao <hjliao@taosdata.com>
Date: Tue, 6 Dec 2022 15:29:45 +0800
Subject: [PATCH] fix(query):remove invalid destroy appinst operation.

---
 source/client/src/clientEnv.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/source/client/src/clientEnv.c b/source/client/src/clientEnv.c
index 93398d337d..d27757119a 100644
--- a/source/client/src/clientEnv.c
+++ b/source/client/src/clientEnv.c
@@ -231,10 +231,9 @@ void destroyTscObj(void *pObj) {
   tscDebug("connObj 0x%" PRIx64 " p:%p destroyed, remain inst totalConn:%" PRId64, pTscObj->id, pTscObj,
            pTscObj->pAppInfo->numOfConns);
 
-  int64_t connNum = atomic_sub_fetch_64(&pTscObj->pAppInfo->numOfConns, 1);
-  if (0 == connNum) {
-    destroyAppInst(pTscObj->pAppInfo);
-  }
+  // In any cases, we should not free app inst here. Or an race condition rise.
+  /*int64_t connNum = */atomic_sub_fetch_64(&pTscObj->pAppInfo->numOfConns, 1);
+
   taosThreadMutexDestroy(&pTscObj->mutex);
   taosMemoryFree(pTscObj);