From bebd9225cc9026643ddb9ee9fefc4652cea87cb4 Mon Sep 17 00:00:00 2001
From: dapan1121 <wpan@taosdata.com>
Date: Thu, 25 Aug 2022 11:49:01 +0800
Subject: [PATCH] fix: fix explain buffer issue

---
 source/common/src/tmsg.c                |  9 ++++++++-
 source/libs/nodes/src/nodesToSQLFuncs.c | 12 +++++++++++-
 source/util/test/hashTest.cpp           |  2 --
 3 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/source/common/src/tmsg.c b/source/common/src/tmsg.c
index b3c0363e44..1d96131f11 100644
--- a/source/common/src/tmsg.c
+++ b/source/common/src/tmsg.c
@@ -5123,8 +5123,15 @@ int tDecodeSVCreateTbRsp(SDecoder *pCoder, SVCreateTbRsp *pRsp) {
 }
 
 void tFreeSVCreateTbRsp(void* param) {
+  if (NULL == param) {
+    return;
+  }
+  
   SVCreateTbRsp* pRsp = (SVCreateTbRsp*)param;
-  taosMemoryFree(pRsp->pMeta);
+  if (pRsp->pMeta) {
+    taosMemoryFree(pRsp->pMeta->pSchemas);
+    taosMemoryFree(pRsp->pMeta);
+  }
 }
 
 // TDMT_VND_DROP_TABLE =================
diff --git a/source/libs/nodes/src/nodesToSQLFuncs.c b/source/libs/nodes/src/nodesToSQLFuncs.c
index e521c57c3d..9325d02886 100644
--- a/source/libs/nodes/src/nodesToSQLFuncs.c
+++ b/source/libs/nodes/src/nodesToSQLFuncs.c
@@ -135,7 +135,12 @@ int32_t nodesNodeToSQL(SNode *pNode, char *buf, int32_t bufSize, int32_t *len) {
         NODES_ERR_RET(TSDB_CODE_QRY_APP_ERROR);
       }
 
-      *len += snprintf(buf + *len, bufSize - *len, "%s", t);
+      int32_t tlen = strlen(t);
+      if (tlen > 32) {
+        *len += snprintf(buf + *len, bufSize - *len, "%.*s...%s", 32, t, t + tlen - 1);
+      } else {
+        *len += snprintf(buf + *len, bufSize - *len, "%s", t);
+      }
       taosMemoryFree(t);
 
       return TSDB_CODE_SUCCESS;
@@ -199,12 +204,17 @@ int32_t nodesNodeToSQL(SNode *pNode, char *buf, int32_t bufSize, int32_t *len) {
       SNodeListNode *pListNode = (SNodeListNode *)pNode;
       SNode         *node = NULL;
       bool           first = true;
+      int32_t        num = 0;
 
       *len += snprintf(buf + *len, bufSize - *len, "(");
 
       FOREACH(node, pListNode->pNodeList) {
         if (!first) {
           *len += snprintf(buf + *len, bufSize - *len, ", ");
+          if (++num >= 10) {
+            *len += snprintf(buf + *len, bufSize - *len, "...");
+            break;
+          }
         }
         NODES_ERR_RET(nodesNodeToSQL(node, buf, bufSize, len));
         first = false;
diff --git a/source/util/test/hashTest.cpp b/source/util/test/hashTest.cpp
index 135db8192a..97e67ea36e 100644
--- a/source/util/test/hashTest.cpp
+++ b/source/util/test/hashTest.cpp
@@ -313,14 +313,12 @@ void perfTest() {
   SArray *slArray = taosArrayInit(100000000, 9);
   for (int64_t i = 0; i < 1000; ++i) {
     int32_t num = taosArrayGetSize(sArray[i]);
-    printf("%d ", num);
     SArray* pArray = sArray[i];
     for (int64_t m = 0; m < num; ++m) {
       char* p = (char*)taosArrayGet(pArray, m);
       ASSERT(taosArrayPush(slArray, p));
     }
   }
-  printf("\n");
   int64_t start100mS = taosGetTimestampMs();
   int64_t start100mSCt = taosHashGetCompTimes(hash100m);
   int32_t num = taosArrayGetSize(slArray);