diff --git a/Jenkinsfile2 b/Jenkinsfile2
index 6549f714a1cb13877b751a8e948e24691fbf45f0..c270b6c4c06573880c639333ebcae803ded1d2e6 100644
--- a/Jenkinsfile2
+++ b/Jenkinsfile2
@@ -240,12 +240,12 @@ def pre_test_win(){
     }
     bat '''
         cd %WIN_INTERNAL_ROOT%
-        git pull
+        git pull  origin  ''' + env.CHANGE_TARGET + '''
     '''
     bat '''
         cd %WIN_COMMUNITY_ROOT%
         git remote prune origin
-        git pull
+        git pull  origin  ''' + env.CHANGE_TARGET + '''
     '''
     bat '''
         cd %WIN_INTERNAL_ROOT%
diff --git a/docs/examples/java/src/main/java/com/taos/example/highvolume/MockDataSource.java b/docs/examples/java/src/main/java/com/taos/example/highvolume/MockDataSource.java
index 6fe83f002ebcb9d82e026e9a32886fd22bfefbe9..f0ebc53b4b9a588ac4a23461553dd5c9f1a9f00b 100644
--- a/docs/examples/java/src/main/java/com/taos/example/highvolume/MockDataSource.java
+++ b/docs/examples/java/src/main/java/com/taos/example/highvolume/MockDataSource.java
@@ -16,7 +16,7 @@ class MockDataSource implements Iterator {
     private int currentTbId = -1;
 
     // mock values
-    String[] location = {"LosAngeles", "SanDiego", "Hollywood", "Compton", "San Francisco"};
+    String[] location = {"California.LosAngeles", "California.SanDiego", "California.SanJose", "California.Campbell", "California.SanFrancisco"};
     float[] current = {8.8f, 10.7f, 9.9f, 8.9f, 9.4f};
     int[] voltage = {119, 116, 111, 113, 118};
     float[] phase = {0.32f, 0.34f, 0.33f, 0.329f, 0.141f};
@@ -50,4 +50,4 @@ class MockDataSource implements Iterator {
 
         return sb.toString();
     }
-}
\ No newline at end of file
+}
diff --git a/docs/examples/python/highvolume_faster_queue.py b/docs/examples/python/highvolume_faster_queue.py
index 14aebc67eee5a0701081f2f5da605184568c3a89..171fbfa362fa3cdda75484f62e5509c358a2ac98 100644
--- a/docs/examples/python/highvolume_faster_queue.py
+++ b/docs/examples/python/highvolume_faster_queue.py
@@ -42,7 +42,7 @@ def get_connection():
 
 # ANCHOR: MockDataSource
 class MockDataSource:
-    location = ["LosAngeles", "SanDiego", "Hollywood", "Compton", "San Francisco"]
+    location = ["California.LosAngeles", "California.SanDiego", "California.SanJose", "California.Campbell", "California.SanFrancisco"]
     current = [8.8, 10.7, 9.9, 8.9, 9.4]
     voltage = [119, 116, 111, 113, 118]
     phase = [0.32, 0.34, 0.33, 0.329, 0.141]
diff --git a/docs/examples/python/mockdatasource.py b/docs/examples/python/mockdatasource.py
index 852860aec0adc8f9b043c9dcd5deb0bf00239201..1c516a800e007934f8e6815f82024a53fea70073 100644
--- a/docs/examples/python/mockdatasource.py
+++ b/docs/examples/python/mockdatasource.py
@@ -3,11 +3,11 @@ import time
 
 class MockDataSource:
     samples = [
-        "8.8,119,0.32,LosAngeles,0",
-        "10.7,116,0.34,SanDiego,1",
-        "9.9,111,0.33,Hollywood,2",
-        "8.9,113,0.329,Compton,3",
-        "9.4,118,0.141,San Francisco,4"
+        "8.8,119,0.32,California.LosAngeles,0",
+        "10.7,116,0.34,California.SanDiego,1",
+        "9.9,111,0.33,California.SanJose,2",
+        "8.9,113,0.329,California.Campbell,3",
+        "9.4,118,0.141,California.SanFrancisco,4"
     ]
 
     def __init__(self, tb_name_prefix, table_count):
diff --git a/docs/zh/05-get-started/index.md b/docs/zh/05-get-started/index.md
index 272a231ed714305ce27525229333f8049e1ff450..145e34a01a7f794088d7b0b33556bb99ec3605d6 100644
--- a/docs/zh/05-get-started/index.md
+++ b/docs/zh/05-get-started/index.md
@@ -132,7 +132,7 @@ Query OK, 2 row(s) in set (0.003128s)
 taosBenchmark
 ```
 
-该命令将在数据库 test 下面自动创建一张超级表 meters，该超级表下有 1 万张表，表名为 "d0" 到 "d9999"，每张表有 1 万条记录，每条记录有 (ts, current, voltage, phase) 四个字段，时间戳从 "2017-07-14 10:40:00 000" 到 "2017-07-14 10:40:09 999"，每张表带有标签 location 和 groupId，groupId 被设置为 1 到 10， location 被设置为 "San Francisco" 或者 "Los Angeles"等城市名称。
+该命令将在数据库 test 下面自动创建一张超级表 meters，该超级表下有 1 万张表，表名为 "d0" 到 "d9999"，每张表有 1 万条记录，每条记录有 (ts, current, voltage, phase) 四个字段，时间戳从 "2017-07-14 10:40:00 000" 到 "2017-07-14 10:40:09 999"，每张表带有标签 location 和 groupId，groupId 被设置为 1 到 10， location 被设置为 "California.SanFrancisco" 或者 "California.LosAngeles"等城市名称。
 
 这条命令很快完成 1 亿条记录的插入。具体时间取决于硬件性能，即使在一台普通的 PC 服务器往往也仅需十几秒。
 
@@ -154,10 +154,10 @@ taos> select count(*) from test.meters;
 taos> select avg(current), max(voltage), min(phase) from test.meters;
 ```
 
-查询 location="San Francisco" 的记录总条数：
+查询 location="California.SanFrancisco" 的记录总条数：
 
 ```sql
-taos> select count(*) from test.meters where location="San Francisco";
+taos> select count(*) from test.meters where location="California.SanFrancisco";
 ```
 
 查询 groupId=10 的所有记录的平均值、最大值、最小值等：
diff --git a/src/client/src/tscParseLineProtocol.c b/src/client/src/tscParseLineProtocol.c
index a5673378f5646479ab53d638e5ff74dee9a4c879..559a488b8a6c2e0828c76688df07fa2093392284 100644
--- a/src/client/src/tscParseLineProtocol.c
+++ b/src/client/src/tscParseLineProtocol.c
@@ -97,9 +97,9 @@ static int32_t getFieldBytesFromSmlKv(TAOS_SML_KV* kv, int32_t* bytes, uint64_t
 //      }
 //      free(ucs);
 //      *bytes =  bytesNeeded + VARSTR_HEADER_SIZE;
-      *bytes = kv->length * TSDB_NCHAR_SIZE + VARSTR_HEADER_SIZE;
+      *bytes = (kv->length == 0 ? 1 : kv->length) * TSDB_NCHAR_SIZE + VARSTR_HEADER_SIZE;
     } else if (kv->type == TSDB_DATA_TYPE_BINARY) {
-      *bytes = kv->length + VARSTR_HEADER_SIZE;
+      *bytes = (kv->length == 0 ? 1 : kv->length) + VARSTR_HEADER_SIZE;
     }
   }
   return 0;
@@ -2608,7 +2608,7 @@ int32_t tscParseLine(const char* sql, TAOS_SML_DATA_POINT* smlData, SSmlLinesInf
     return ret;
   }
   tscDebug("SML:0x%"PRIx64" Parse fields finished, num of fields:%d", info->id, smlData->fieldNum);
-  if (smlData->fieldNum == 0) {
+  if (smlData->fieldNum <= 1) {
     tscDebug("SML:0x%"PRIx64" Parse fields error, no field in line", info->id);
     taosHashCleanup(keyHashTable);
     return TSDB_CODE_TSC_LINE_SYNTAX_ERROR;
diff --git a/src/client/src/tscPrepare.c b/src/client/src/tscPrepare.c
index 665efa4c6dbca0437540ee1dd9875267bc2d8b72..8e4c417fbfe759bc383191b9d7a9b49f41978435 100644
--- a/src/client/src/tscPrepare.c
+++ b/src/client/src/tscPrepare.c
@@ -1261,8 +1261,6 @@ static void insertBatchClean(STscStmt* pStmt) {
   taosHashClear(pCmd->insertParam.pTableBlockHashList);
   tscFreeSqlResult(pSql);
   tscFreeSubobj(pSql);
-  tfree(pSql->pSubs);
-  pSql->subState.numOfSub = 0;
 }
 
 static int insertBatchStmtExecute(STscStmt* pStmt) {
diff --git a/src/client/src/tscServer.c b/src/client/src/tscServer.c
index dfdefbe82eac992bedd0655c158c27f47b7c1ca6..2818d1014424c442454d4664859d3d90ab58ebdd 100644
--- a/src/client/src/tscServer.c
+++ b/src/client/src/tscServer.c
@@ -330,7 +330,7 @@ void checkBrokenQueries(STscObj *pTscObj) {
   SSqlObj *pSql = pTscObj->sqlList;
   while (pSql) {
     // avoid sqlobj may not be correctly removed from sql list
-    if (pSql->sqlstr == NULL) {
+    if (pSql->sqlstr == NULL || pSql->signature != pSql) {
       pSql = pSql->next;
       continue;
     }
@@ -3400,7 +3400,6 @@ int tscRenewTableMeta(SSqlObj *pSql) {
   pthread_mutex_lock(&rootSql->mtxSubs);
   tscFreeSubobj(rootSql);
   pthread_mutex_unlock(&rootSql->mtxSubs);
-  tfree(rootSql->pSubs);
   tscResetSqlCmd(&rootSql->cmd, true, rootSql->self);
 
   code = getMultiTableMetaFromMnode(rootSql, pNameList, vgroupList, NULL, tscTableMetaCallBack, true);
diff --git a/src/client/src/tscStream.c b/src/client/src/tscStream.c
index 0ed4c0a270ca675dfc445f387ad48de5171df7d9..eab9527f16e439e48016faff33a280c206818e15 100644
--- a/src/client/src/tscStream.c
+++ b/src/client/src/tscStream.c
@@ -232,8 +232,6 @@ static void tscProcessStreamQueryCallback(void *param, TAOS_RES *tres, int numOf
 
     tscFreeSqlResult(pStream->pSql);
     tscFreeSubobj(pStream->pSql);
-    tfree(pStream->pSql->pSubs);
-    pStream->pSql->subState.numOfSub = 0;
 
     pTableMetaInfo->vgroupList = tscVgroupInfoClear(pTableMetaInfo->vgroupList);
     tscSetRetryTimer(pStream, pStream->pSql, retryDelay);
@@ -610,8 +608,6 @@ static void tscProcessStreamRetrieveResult(void *param, TAOS_RES *res, int numOf
 
     tscFreeSqlResult(pSql);
     tscFreeSubobj(pSql);    
-    tfree(pSql->pSubs);
-    pSql->subState.numOfSub = 0;
     pTableMetaInfo->vgroupList = tscVgroupInfoClear(pTableMetaInfo->vgroupList);
     tscSetNextLaunchTimer(pStream, pSql);
   }
diff --git a/src/client/src/tscSubquery.c b/src/client/src/tscSubquery.c
index 1805c22a9d77181fd5d5e2b3f31a25186741ac74..a8c2eea195992c4a6e66cbfd49bf9e36f2cf4c8c 100644
--- a/src/client/src/tscSubquery.c
+++ b/src/client/src/tscSubquery.c
@@ -695,6 +695,12 @@ static int32_t tscLaunchRealSubqueries(SSqlObj* pSql) {
 }
 
 void freeJoinSubqueryObj(SSqlObj* pSql) {
+  if (pSql->subState.numOfSub == 0) {
+    return;
+  }  
+
+  pthread_mutex_lock(&pSql->subState.mutex);
+
   for (int32_t i = 0; i < pSql->subState.numOfSub; ++i) {
     SSqlObj* pSub = pSql->pSubs[i];
     if (pSub == NULL) {
@@ -707,13 +713,13 @@ void freeJoinSubqueryObj(SSqlObj* pSql) {
     taos_free_result(pSub);
     pSql->pSubs[i] = NULL;
   }
-
-  if (pSql->subState.states) {
-    pthread_mutex_destroy(&pSql->subState.mutex);
-  }
   
   tfree(pSql->subState.states);
   pSql->subState.numOfSub = 0;
+
+  pthread_mutex_unlock(&pSql->subState.mutex);
+
+  pthread_mutex_destroy(&pSql->subState.mutex);  
 }
 
 static int32_t quitAllSubquery(SSqlObj* pSqlSub, SSqlObj* pSqlObj, SJoinSupporter* pSupporter) {
@@ -901,7 +907,6 @@ bool tscReparseSql(SSqlObj *sql, int32_t code){
   }
 
   tscFreeSubobj(sql);      
-  tfree(sql->pSubs);
 
   sql->res.code = TSDB_CODE_SUCCESS;
   sql->retry++;
@@ -2180,7 +2185,6 @@ void tscHandleMasterJoinQuery(SSqlObj* pSql) {
   assert((pQueryInfo->type & TSDB_QUERY_TYPE_SUBQUERY) == 0);
 
   int32_t code = TSDB_CODE_SUCCESS;
-  pSql->subState.numOfSub = pQueryInfo->numOfTables;
 
   if (pSql->subState.states == NULL) {
     pSql->subState.states = calloc(pSql->subState.numOfSub, sizeof(*pSql->subState.states));
@@ -2192,6 +2196,8 @@ void tscHandleMasterJoinQuery(SSqlObj* pSql) {
     pthread_mutex_init(&pSql->subState.mutex, NULL);
   }
 
+  pSql->subState.numOfSub = pQueryInfo->numOfTables;
+
   memset(pSql->subState.states, 0, sizeof(*pSql->subState.states) * pSql->subState.numOfSub);
   tscDebug("0x%"PRIx64" reset all sub states to 0, start subquery, total:%d", pSql->self, pQueryInfo->numOfTables);
 
@@ -2251,7 +2257,12 @@ void tscHandleMasterJoinQuery(SSqlObj* pSql) {
 }
 
 void doCleanupSubqueries(SSqlObj *pSql, int32_t numOfSubs) {
-  assert(numOfSubs <= pSql->subState.numOfSub && numOfSubs >= 0);
+  pthread_mutex_lock(&pSql->subState.mutex);
+  if (numOfSubs > pSql->subState.numOfSub || numOfSubs <= 0 || pSql->subState.numOfSub <= 0) {
+    pthread_mutex_unlock(&pSql->subState.mutex);
+    return;
+  }
+
   
   for(int32_t i = 0; i < numOfSubs; ++i) {
     SSqlObj* pSub = pSql->pSubs[i];
@@ -2261,6 +2272,7 @@ void doCleanupSubqueries(SSqlObj *pSql, int32_t numOfSubs) {
     
     taos_free_result(pSub);
   }
+  pthread_mutex_unlock(&pSql->subState.mutex);
 }
 
 void tscLockByThread(int64_t *lockedBy) {
@@ -2365,8 +2377,10 @@ void tscFirstRoundRetrieveCallback(void* param, TAOS_RES* tres, int numOfRows) {
   if (code != TSDB_CODE_SUCCESS) {
     tscFreeFirstRoundSup(&param);
     taos_free_result(pSql);
+    pthread_mutex_lock(&pParent->subState.mutex);
     pParent->subState.numOfSub = 0;
     tfree(pParent->pSubs);    
+    pthread_mutex_unlock(&pParent->subState.mutex);
     pParent->res.code = code;
     tscAsyncResultOnError(pParent);
     return;
@@ -2469,9 +2483,11 @@ void tscFirstRoundRetrieveCallback(void* param, TAOS_RES* tres, int numOfRows) {
   tscFreeFirstRoundSup(&param);
 
   taos_free_result(pSql);
+  pthread_mutex_lock(&pParent->subState.mutex);
   pParent->subState.numOfSub = 0;
   tfree(pParent->pSubs);    
-
+  pthread_mutex_unlock(&pParent->subState.mutex);
+  
   if (resRows == 0) {
     pParent->cmd.command = TSDB_SQL_RETRIEVE_EMPTY_RESULT;
     (*pParent->fp)(pParent->param, pParent, 0);
@@ -2493,8 +2509,10 @@ void tscFirstRoundCallback(void* param, TAOS_RES* tres, int code) {
 
     tscFreeFirstRoundSup(&param);
     taos_free_result(pSql);
+    pthread_mutex_lock(&parent->subState.mutex);
     parent->subState.numOfSub = 0;
     tfree(parent->pSubs);
+    pthread_mutex_unlock(&parent->subState.mutex);
     parent->res.code = c;
     tscAsyncResultOnError(parent);
     return;
@@ -3014,7 +3032,6 @@ void tscHandleSubqueryError(SRetrieveSupport *trsupport, SSqlObj *pSql, int numO
       }
 
       tscFreeSubobj(userSql);      
-      tfree(userSql->pSubs);
 
       userSql->res.code = TSDB_CODE_SUCCESS;
       userSql->retry++;
@@ -3382,7 +3399,9 @@ static bool needRetryInsert(SSqlObj* pParentObj, int32_t numOfSub) {
 }
 
 static void doFreeInsertSupporter(SSqlObj* pSqlObj) {
-  assert(pSqlObj != NULL && pSqlObj->subState.numOfSub > 0);
+  if (pSqlObj == NULL || pSqlObj->subState.numOfSub <= 0) {
+    return;
+  }
 
   for(int32_t i = 0; i < pSqlObj->subState.numOfSub; ++i) {
     SSqlObj* pSql = pSqlObj->pSubs[i];
diff --git a/src/client/src/tscUtil.c b/src/client/src/tscUtil.c
index 6c03aeefd789825ddabe1cf1a27bf1f5f28995ea..e1717269de6d2152acc127e6d704080e3e57b62d 100644
--- a/src/client/src/tscUtil.c
+++ b/src/client/src/tscUtil.c
@@ -1682,6 +1682,8 @@ void tscFreeSubobj(SSqlObj* pSql) {
     return;
   }
 
+  pthread_mutex_lock(&pSql->subState.mutex);
+
   tscDebug("0x%"PRIx64" start to free sub SqlObj, numOfSub:%d", pSql->self, pSql->subState.numOfSub);
 
   for(int32_t i = 0; i < pSql->subState.numOfSub; ++i) {
@@ -1695,12 +1697,14 @@ void tscFreeSubobj(SSqlObj* pSql) {
     pSql->pSubs[i] = NULL;
   }
 
-  if (pSql->subState.states) {
-    pthread_mutex_destroy(&pSql->subState.mutex);
-  }
-
   tfree(pSql->subState.states);
   pSql->subState.numOfSub = 0;
+
+  tfree(pSql->pSubs);
+
+  pthread_mutex_unlock(&pSql->subState.mutex);
+  
+  pthread_mutex_destroy(&pSql->subState.mutex);
 }
 
 /**
@@ -1768,9 +1772,6 @@ void tscFreeSqlObj(SSqlObj* pSql) {
   pSql->fp = NULL;
   tfree(pSql->sqlstr);
   tfree(pSql->pBuf);
-
-  tfree(pSql->pSubs);
-  pSql->subState.numOfSub = 0;
   pSql->self = 0;
 
   tscFreeSqlResult(pSql);
@@ -4161,10 +4162,7 @@ static void tscSubqueryCompleteCallback(void* param, TAOS_RES* tres, int code) {
     }
 
     tscFreeSubobj(pParentSql);
-    tfree(pParentSql->pSubs);
-
     tscFreeSubobj(rootObj);
-    tfree(rootObj->pSubs);
 
     rootObj->res.code = TSDB_CODE_SUCCESS;
     rootObj->retry++;
@@ -4207,19 +4205,9 @@ static void tscSubqueryCompleteCallback(void* param, TAOS_RES* tres, int code) {
 int32_t doInitSubState(SSqlObj* pSql, int32_t numOfSubqueries) {
   //bug fix. Above doInitSubState level, the loop invocation with the same SSqlObj will be fail.
   //assert(pSql->subState.numOfSub == 0 && pSql->pSubs == NULL && pSql->subState.states == NULL);  
-  if(pSql->pSubs) {
-    free(pSql->pSubs);
-    pSql->pSubs = NULL;
-  }
-  
-  if(pSql->subState.states) {
-    free(pSql->subState.states);
-    pSql->subState.states = NULL;
-  }
-  
-  pSql->subState.numOfSub = numOfSubqueries;
+  tscFreeSubobj(pSql);
   
-  pSql->pSubs = calloc(pSql->subState.numOfSub, POINTER_BYTES);
+  pSql->pSubs = calloc(numOfSubqueries, POINTER_BYTES);
   pSql->subState.states = calloc(pSql->subState.numOfSub, sizeof(int8_t));
 
   int32_t code = pthread_mutex_init(&pSql->subState.mutex, NULL);
@@ -4227,6 +4215,8 @@ int32_t doInitSubState(SSqlObj* pSql, int32_t numOfSubqueries) {
     return TSDB_CODE_TSC_OUT_OF_MEMORY;
   }
 
+  pSql->subState.numOfSub = numOfSubqueries;
+
   return TSDB_CODE_SUCCESS;
 }
 
@@ -4332,6 +4322,7 @@ void executeQuery(SSqlObj* pSql, SQueryInfo* pQueryInfo) {
   return;
 
   _error:
+
   for(int32_t i = 0; i < numOfInit; ++i) {
     SSqlObj* p = pSql->pSubs[i];
     tscFreeSqlObj(p);
@@ -4616,16 +4607,7 @@ void tscTryQueryNextClause(SSqlObj* pSql, __async_cb_func_t fp) {
   pRes->final = finalBk;
   pRes->numOfTotal = num;
 
-  pthread_mutex_lock(&pSql->subState.mutex);
-  for(int32_t i = 0; i < pSql->subState.numOfSub; ++i) {
-    taos_free_result(pSql->pSubs[i]);
-  }
-
-  tfree(pSql->pSubs);
-  tfree(pSql->subState.states);
-  pSql->subState.numOfSub = 0;
-  pthread_mutex_unlock(&pSql->subState.mutex);
-  pthread_mutex_destroy(&pSql->subState.mutex);
+  tscFreeSubobj(pSql);
 
   pSql->fp = fp;
 
diff --git a/src/kit/taos-tools b/src/kit/taos-tools
index 2dba49cf57cde998f768bb033619b4d8c5143127..9f4c01ec83b93b2385816134071aa5e702a24079 160000
--- a/src/kit/taos-tools
+++ b/src/kit/taos-tools
@@ -1 +1 @@
-Subproject commit 2dba49cf57cde998f768bb033619b4d8c5143127
+Subproject commit 9f4c01ec83b93b2385816134071aa5e702a24079
diff --git a/src/query/src/qExecutor.c b/src/query/src/qExecutor.c
index 6ba582138c2aecbad0c0dde95177b67a4a0d72fb..7ff2ff790fe5e1d98f147fb4e4f0e2ea7e13b43b 100644
--- a/src/query/src/qExecutor.c
+++ b/src/query/src/qExecutor.c
@@ -9946,7 +9946,7 @@ SQInfo* createQInfoImpl(SQueryTableMsg* pQueryMsg, SGroupbyExpr* pGroupbyExpr, S
 
     pTableqinfo->pGroupList = taosArrayInit(numOfGroups, POINTER_BYTES);
     pTableqinfo->numOfTables = pTableGroupInfo->numOfTables;
-    pTableqinfo->map = taosHashInit(pTableGroupInfo->numOfTables, taosGetDefaultHashFunction(TSDB_DATA_TYPE_INT), true, HASH_NO_LOCK);
+    pTableqinfo->map = taosHashInit(pTableGroupInfo->numOfTables, taosGetDefaultHashFunction(TSDB_DATA_TYPE_INT), true, HASH_ENTRY_LOCK);
   }
 
   pQInfo->pBuf = calloc(pTableGroupInfo->numOfTables, sizeof(STableQueryInfo));
@@ -10146,10 +10146,13 @@ static void doDestroyTableQueryInfo(STableGroupInfo* pTableqinfoGroupInfo) {
   }
 
   taosArrayDestroy(&pTableqinfoGroupInfo->pGroupList);
-  taosHashCleanup(pTableqinfoGroupInfo->map);
+
+  SHashObj *pmap = pTableqinfoGroupInfo->map;
+  if (pmap == atomic_val_compare_exchange_ptr(&pTableqinfoGroupInfo->map, pmap, NULL)) {
+    taosHashCleanup(pmap);
+  }
 
   pTableqinfoGroupInfo->pGroupList = NULL;
-  pTableqinfoGroupInfo->map = NULL;
   pTableqinfoGroupInfo->numOfTables = 0;
 }
 
diff --git a/src/util/src/hash.c b/src/util/src/hash.c
index d4d42976155cb1e11b4abdf6c1d6fa6855921971..3cbcc7ed6e7243dc1dcaec17b3c35892c011461e 100644
--- a/src/util/src/hash.c
+++ b/src/util/src/hash.c
@@ -611,7 +611,6 @@ void taosHashClear(SHashObj *pHashObj) {
   for (int32_t i = 0; i < pHashObj->capacity; ++i) {
     SHashEntry *pEntry = pHashObj->hashList[i];
     if (pEntry->num == 0) {
-      assert(pEntry->next == NULL);
       continue;
     }
 
diff --git a/tests/develop-test/5-taos-tools/taosbenchmark/demo.py b/tests/develop-test/5-taos-tools/taosbenchmark/demo.py
index 8b839691f725c83d2ea2a9f946bb461ba2f6bacf..ace3046cdf6e5e3729c90c5b4429fe32a1945fd1 100644
--- a/tests/develop-test/5-taos-tools/taosbenchmark/demo.py
+++ b/tests/develop-test/5-taos-tools/taosbenchmark/demo.py
@@ -22,9 +22,9 @@ from util.dnodes import *
 
 class TDTestCase:
     def caseDescription(self):
-        '''
+        """
         [TD-13823] taosBenchmark test cases
-        '''
+        """
         return
 
     def init(self, conn, logSql):
@@ -34,19 +34,19 @@ class TDTestCase:
     def getPath(self, tool="taosBenchmark"):
         selfPath = os.path.dirname(os.path.realpath(__file__))
 
-        if ("community" in selfPath):
-            projPath = selfPath[:selfPath.find("community")]
+        if "community" in selfPath:
+            projPath = selfPath[: selfPath.find("community")]
         else:
-            projPath = selfPath[:selfPath.find("tests")]
+            projPath = selfPath[: selfPath.find("tests")]
 
         paths = []
         for root, dirs, files in os.walk(projPath):
-            if ((tool) in files):
+            if (tool) in files:
                 rootRealPath = os.path.dirname(os.path.realpath(root))
-                if ("packaging" not in rootRealPath):
+                if "packaging" not in rootRealPath:
                     paths.append(os.path.join(root, tool))
                     break
-        if (len(paths) == 0):
+        if len(paths) == 0:
             tdLog.exit("taosBenchmark not found!")
             return
         else:
@@ -55,7 +55,7 @@ class TDTestCase:
 
     def run(self):
         binPath = self.getPath()
-        cmd = "%s -n 100 -t 100 -y" %binPath
+        cmd = "%s -n 100 -t 100 -y" % binPath
         tdLog.info("%s" % cmd)
         os.system("%s" % cmd)
         tdSql.execute("use test")
@@ -77,14 +77,16 @@ class TDTestCase:
         tdSql.checkData(4, 3, "TAG")
         tdSql.checkData(5, 0, "location")
         tdSql.checkData(5, 1, "BINARY")
-        tdSql.checkData(5, 2, 16)
+        tdSql.checkData(5, 2, 24)
         tdSql.checkData(5, 3, "TAG")
 
         tdSql.query("select count(*) from test.meters where groupid >= 0")
         tdSql.checkData(0, 0, 10000)
 
-        tdSql.query("select count(*) from test.meters where location = 'San Francisco' or location = 'Los Angles' or location = 'San Diego' or location = 'San Jose' or \
-            location = 'Palo Alto' or location = 'Campbell' or location = 'Mountain View' or location = 'Sunnyvale' or location = 'Santa Clara' or location = 'Cupertino' ")
+        tdSql.query(
+            "select count(*) from test.meters where location = 'California.SanFrancisco' or location = 'California.LosAngles' or location = 'California.SanDiego' or location = 'California.SanJose' or \
+            location = 'California.PaloAlto' or location = 'California.Campbell' or location = 'California.MountainView' or location = 'California.Sunnyvale' or location = 'California.SantaClara' or location = 'California.Cupertino' "
+        )
         tdSql.checkData(0, 0, 10000)
 
     def stop(self):
@@ -93,4 +95,4 @@ class TDTestCase:
 
 
 tdCases.addWindows(__file__, TDTestCase())
-tdCases.addLinux(__file__, TDTestCase())
\ No newline at end of file
+tdCases.addLinux(__file__, TDTestCase())
diff --git a/tests/pytest/insert/line_insert.py b/tests/pytest/insert/line_insert.py
index 79c318c3448a0a77b02143ac5689952d9e498d3c..8beb6ba01e59ece18c5d7d4b71bd6f09b42fa157 100644
--- a/tests/pytest/insert/line_insert.py
+++ b/tests/pytest/insert/line_insert.py
@@ -208,6 +208,14 @@ class TDTestCase:
 
         tdSql.query("select * from type_json5")
         tdSql.checkData(0, 2, '''{"jsonC":"0"}''')
+        try:
+            self._conn.schemaless_insert([
+                                    "measurement,host=host1 field1=12i,field2=2.0,fieldKey=\"Launch\" 1654078242716",
+                                    "measurement,host=host1"
+                                    ], TDSmlProtocolType.LINE.value, TDSmlTimestampType.MILLI_SECOND.value)
+            tdLog.exit("%s failed: no exception happen here" % __file__)           
+        except Exception as e:
+            pass
 
     def stop(self):
         tdSql.close()