From 1dc7859b620cd4a591a56d3f3a738867e32d7833 Mon Sep 17 00:00:00 2001
From: yihaoDeng <yhdeng@taosdata.com>
Date: Wed, 4 Aug 2021 13:06:52 +0800
Subject: [PATCH] [TD-4199]<feature> enhance performance

---
 src/client/src/tscServer.c | 6 ++----
 src/util/src/hash.c        | 2 +-
 2 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/src/client/src/tscServer.c b/src/client/src/tscServer.c
index 6b5094df89..326dc14ecb 100644
--- a/src/client/src/tscServer.c
+++ b/src/client/src/tscServer.c
@@ -2845,10 +2845,8 @@ int32_t tscGetTableMetaImpl(SSqlObj* pSql, STableMetaInfo *pTableMetaInfo, bool
 
   size_t len = strlen(name);
   // just make runtime happy
-  if (pTableMetaInfo->tableMetaCapacity != 0) {
-    if (pTableMetaInfo->pTableMeta != NULL) {
-      memset(pTableMetaInfo->pTableMeta, 0, pTableMetaInfo->tableMetaCapacity);
-    }
+  if (pTableMetaInfo->tableMetaCapacity != 0 && pTableMetaInfo->pTableMeta != NULL) {
+    memset(pTableMetaInfo->pTableMeta, 0, pTableMetaInfo->tableMetaCapacity);
   } 
   taosHashGetCloneExt(tscTableMetaMap, name, len, NULL, (void **)&(pTableMetaInfo->pTableMeta), &pTableMetaInfo->tableMetaCapacity);
   
diff --git a/src/util/src/hash.c b/src/util/src/hash.c
index e2ad447933..6118aa7bef 100644
--- a/src/util/src/hash.c
+++ b/src/util/src/hash.c
@@ -18,7 +18,7 @@
 #include "tulog.h"
 #include "taosdef.h"
 
-#define EXT_SIZE 0 
+#define EXT_SIZE 1024 
 
 #define HASH_NEED_RESIZE(_h) ((_h)->size >= (_h)->capacity * HASH_DEFAULT_LOAD_FACTOR)