From 24eae824ecec5b7239a9cbf2346000929593745c Mon Sep 17 00:00:00 2001
From: Shengliang Guan <slguan@taosdata.com>
Date: Tue, 30 Jun 2020 23:19:00 +0800
Subject: [PATCH] Invalid write while create child ctable

---
 src/mnode/src/mnodeTable.c     | 6 ++++--
 src/plugins/http/src/httpSql.c | 2 ++
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/mnode/src/mnodeTable.c b/src/mnode/src/mnodeTable.c
index 23b62f1aa3..82322d43b8 100644
--- a/src/mnode/src/mnodeTable.c
+++ b/src/mnode/src/mnodeTable.c
@@ -382,11 +382,13 @@ static void mnodeAddTableIntoStable(SSuperTableObj *pStable, SChildTableObj *pCt
   pStable->numOfTables++;
 
   if (pStable->vgHash == NULL) {
-    pStable->vgHash = taosHashInit(100000, taosGetDefaultHashFunction(TSDB_DATA_TYPE_INT), false);
+    pStable->vgHash = taosHashInit(64, taosGetDefaultHashFunction(TSDB_DATA_TYPE_INT), false);
   }
 
   if (pStable->vgHash != NULL) {
-    taosHashPut(pStable->vgHash, (char *)&pCtable->vgId, sizeof(pCtable->vgId), &pCtable->vgId, sizeof(pCtable->vgId));
+    if (taosHashGet(pStable->vgHash, &pCtable->vgId, sizeof(pCtable->vgId)) == NULL) {
+      taosHashPut(pStable->vgHash, &pCtable->vgId, sizeof(pCtable->vgId), &pCtable->vgId, sizeof(pCtable->vgId));
+    }
   }
 }
 
diff --git a/src/plugins/http/src/httpSql.c b/src/plugins/http/src/httpSql.c
index d0e9b005fd..9d3efca01d 100644
--- a/src/plugins/http/src/httpSql.c
+++ b/src/plugins/http/src/httpSql.c
@@ -359,6 +359,8 @@ void httpExecCmd(HttpContext *pContext) {
 
 void httpProcessRequestCb(void *param, TAOS_RES *result, int code) {
   HttpContext *pContext = param;
+  taos_free_result(result);
+  
   if (pContext == NULL) return;
 
   if (code < 0) {