Merge branch '3.0' of github.com:taosdata/TDengine into szhou/python-udf

cmake/taosadapter_CMakeLists.txt.in

@@ -2,7 +2,7 @@
 # taosadapter
 ExternalProject_Add(taosadapter
         GIT_REPOSITORY https://github.com/taosdata/taosadapter.git
-        GIT_TAG 9cfe416
+        GIT_TAG 7920f98
         SOURCE_DIR "${TD_SOURCE_DIR}/tools/taosadapter"
         BINARY_DIR ""
         #BUILD_IN_SOURCE TRUE

cmake/taostools_CMakeLists.txt.in

@@ -2,7 +2,7 @@
 # taos-tools
 ExternalProject_Add(taos-tools
         GIT_REPOSITORY https://github.com/taosdata/taos-tools.git
-        GIT_TAG 1e15545
+        GIT_TAG 0111c66
         SOURCE_DIR "${TD_SOURCE_DIR}/tools/taos-tools"
         BINARY_DIR ""
         #BUILD_IN_SOURCE TRUE

docs/en/05-get-started/03-package.md

@@ -202,16 +202,18 @@ After the installation is complete, double-click the /applications/TDengine to s
 
 The following `launchctl` commands can help you manage TDengine service:
 
-- Start TDengine Server: `launchctl start com.tdengine.taosd`
+- Start TDengine Server: `sudo launchctl start com.tdengine.taosd`
 
-- Stop TDengine Server: `launchctl stop com.tdengine.taosd`
+- Stop TDengine Server: `sudo launchctl stop com.tdengine.taosd`
 
-- Check TDengine Server status: `launchctl list | grep taosd`
+- Check TDengine Server status: `sudo launchctl list | grep taosd`
 
 :::info
-
+- Please use `sudo` to run `launchctl` to manage _com.tdengine.taosd_ with administrator privileges.
-- The `launchctl` command  does not require _root_ privileges. You don't need to use the `sudo` command.
+- The administrator privilege is required for service management to enhance security.
-- The first content returned by the `launchctl list | grep taosd` command is the PID of the program, if '-' indicates that the TDengine service is not running.
+- Troubleshooting:
+- The first column returned by the command `launchctl list | grep taosd` is the PID of the program. If it's `-`, that means the TDengine service is not running.
+- If the service is abnormal, please check the `launchd.log` file from the system log or the `taosdlog` from the `/var/log/taos directory` for more information.
 
 :::
 

docs/en/12-taos-sql/24-show.md

@@ -86,10 +86,10 @@ SHOW FUNCTIONS;
 
 Shows all user-defined functions in the system.
 
-## SHOW LICENSE
+## SHOW LICENCES
 
 ```sql
-SHOW LICENSE;
+SHOW LICENCES;
 SHOW GRANTS;
 ```
 
@@ -359,7 +359,7 @@ Shows the working configuration of the parameters that must be the same on each
 SHOW [db_name.]VGROUPS;
 ```
 
-Shows information about all vgroups in the system or about the vgroups for a specified database.
+Shows information about all vgroups in the current database. 
 
 ## SHOW VNODES
 

docs/en/14-reference/12-config/index.md

@@ -83,7 +83,7 @@ The parameters described in this document by the effect that they have on the sy
 | :------- | :----------- | :----------------------------------------------- | :--------------------------------------------------------------------------------------------- |
 | TCP | 6030 | Communication between client and server. In a multi-node cluster, communication between nodes. serverPort |
 | TCP      | 6041         | REST connection between client and server        | Prior to 2.4.0.0: serverPort+11; After 2.4.0.0 refer to [taosAdapter](/reference/taosadapter/) |
-| TCP      | 6043         | Service Port of TaosKeeper                       | The parameter of TaosKeeper |
+| TCP      | 6043         | Service Port of taosKeeper                       | The parameter of taosKeeper |
 | TCP      | 6044         | Data access port for StatsD                      | Configurable through taosAdapter parameters.
 | UDP      | 6045         | Data access for statsd                           | Configurable through taosAdapter parameters.
 | TCP      | 6060         | Port of Monitoring Service in Enterprise version | |

docs/en/25-application/01-telegraf.md

@@ -67,7 +67,7 @@ sudo systemctl start telegraf
 
 Log in to the Grafana interface using a web browser at `IP:3000`, with the system's initial username and password being `admin/admin`.
 Click on the gear icon on the left and select `Plugins`, you should find the TDengine data source plugin icon.
-Click on the plus icon on the left and select `Import` to get the data from `https://github.com/taosdata/grafanaplugin/blob/master/examples/telegraf/grafana/dashboards/telegraf-dashboard-v0.1.0.json`, download the dashboard JSON file and import it. You will then see the dashboard in the following screen.
+Click on the plus icon on the left and select `Import` to get the data from `https://github.com/taosdata/grafanaplugin/blob/master/examples/telegraf/grafana/dashboards/telegraf-dashboard-v3.json` (for Tdengine 3.0. for TDengine 2.x, please use `telegraf-dashboard-v2.json`), download the dashboard JSON file and import it. You will then see the dashboard in the following screen.
 
 ![TDengine Database IT-DevOps-Solutions-telegraf-dashboard](./IT-DevOps-Solutions-telegraf-dashboard.webp)
 

docs/zh/05-get-started/03-package.md

@@ -196,20 +196,22 @@ Active: inactive (dead)
 
 <TabItem label="macOS 系统" value="macos">
 
-安装后，在应用程序目录下，双击 TDengine 图标来启动程序，也可以运行 `launchctl start com.tdengine.taosd` 来启动 TDengine 服务进程。
+安装后，在应用程序目录下，双击 TDengine 图标来启动程序，也可以运行 `sudo launchctl start com.tdengine.taosd` 来启动 TDengine 服务进程。
 
-如下 `launchctl` 命令可以帮助你管理 TDengine 服务：
+如下 `launchctl` 命令用于管理 TDengine 服务：
 
-- 启动服务进程：`launchctl start com.tdengine.taosd`
+- 启动服务进程：`sudo launchctl start com.tdengine.taosd`
 
-- 停止服务进程：`launchctl stop com.tdengine.taosd`
+- 停止服务进程：`sudo launchctl stop com.tdengine.taosd`
 
-- 查看服务状态：`launchctl list | grep taosd`
+- 查看服务状态：`sudo launchctl list | grep taosd`
 
 :::info
 
-- `launchctl` 命令不需要管理员权限，请不要在前面加 `sudo`。
+- `launchctl` 命令管理`com.tdengine.taosd`需要管理员权限，务必在前面加 `sudo` 来增强安全性。
-- `launchctl list | grep taosd` 指令返回的第一个内容是程序的 PID，若为 `-` 则说明 TDengine 服务未运行。
+- `sudo launchctl list | grep taosd` 指令返回的第一列是 `taosd` 程序的 PID，若为 `-` 则说明 TDengine 服务未运行。
+- 故障排查：
+- 如果服务异常请查看系统日志 `launchd.log` 或者 `/var/log/taos` 目录下 `taosdlog` 日志获取更多信息。
 
 :::
 

docs/zh/12-taos-sql/24-show.md

@@ -86,10 +86,10 @@ SHOW FUNCTIONS;
 
 显示用户定义的自定义函数。
 
-## SHOW LICENSE
+## SHOW LICENCES
 
 ```sql
-SHOW LICENSE;
+SHOW LICENCES;
 SHOW GRANTS;
 ```
 
@@ -303,7 +303,7 @@ SHOW DNODE dnode_id VARIABLES;
 SHOW [db_name.]VGROUPS;
 ```
 
-显示当前系统中所有 VGROUP 或某个 db 的 VGROUPS 的信息。
+显示当前数据库中所有 VGROUP 的信息。
 
 ## SHOW VNODES
 

docs/zh/14-reference/12-config/index.md

@@ -83,7 +83,7 @@ taos --dump-config
 | :--- | :-------- | :---------------------------------- | :--------------------------------------------------------------------------------------------------------------------------------- |
 | TCP | 6030 | 客户端与服务端之间通讯，多节点集群的节点间通讯。 | 由配置文件设置 serverPort 决定。 |
 | TCP | 6041 | 客户端与服务端之间的 RESTful 通讯。 | 随 serverPort 端口变化。注意 taosAdapter 配置或有不同，请参考相应[文档](/reference/taosadapter/)。 |
-| TCP | 6043 | TaosKeeper 监控服务端口。 | 随 TaosKeeper 启动参数设置变化。 |
+| TCP | 6043 | taosKeeper 监控服务端口。 | 随 taosKeeper 启动参数设置变化。 |
 | TCP | 6044 | 支持 StatsD 的数据接入端口。 | 随 taosAdapter 启动参数设置变化|
 | UDP | 6045 | 支持 collectd 数据接入端口。 | 随 taosAdapter 启动参数设置变化 |
 | TCP | 6060 | 企业版内 Monitor 服务的网络端口。 | |
@@ -104,7 +104,7 @@ taos --dump-config
 | 属性     | 说明                                                                                                                                                                                               |
 | -------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
 | 适用范围 | 仅服务端适用                                                                                                                                                                                       |
-| 含义     | 服务器内部的系统监控开关。监控主要负责收集物理节点的负载状况，包括 CPU、内存、硬盘、网络带宽的监控记录，监控信息将通过 HTTP 协议发送给由 `monitorFqdn` 和 `monitorProt` 指定的 TaosKeeper 监控服务 |
+| 含义     | 服务器内部的系统监控开关。监控主要负责收集物理节点的负载状况，包括 CPU、内存、硬盘、网络带宽的监控记录，监控信息将通过 HTTP 协议发送给由 `monitorFqdn` 和 `monitorProt` 指定的 taosKeeper 监控服务 |
 | 取值范围 | 0：关闭监控服务， 1：激活监控服务。                                                                                                                                                                |
 | 缺省值   | 0                                                                                                                                                                                                  |
 
@@ -113,7 +113,7 @@ taos --dump-config
 | 属性     | 说明                       |
 | -------- | -------------------------- |
 | 适用范围 | 仅服务端适用               |
-| 含义     | TaosKeeper 监控服务的 FQDN |
+| 含义     | taosKeeper 监控服务的 FQDN |
 | 缺省值   | 无                         |
 
 ### monitorPort
@@ -121,7 +121,7 @@ taos --dump-config
 | 属性     | 说明                        |
 | -------- | --------------------------- |
 | 适用范围 | 仅服务端适用                |
-| 含义     | TaosKeeper 监控服务的端口号 |
+| 含义     | taosKeeper 监控服务的端口号 |
 | 缺省值   | 6043                        |
 
 ### monitorInterval

docs/zh/14-reference/14-taosKeeper.md

@@ -6,7 +6,7 @@ description: TDengine 3.0 版本监控指标的导出工具
 
 ## 简介
 
-TaosKeeper 是 TDengine 3.0 版本监控指标的导出工具，通过简单的几项配置即可获取 TDengine 的运行状态。taosKeeper 使用 TDengine RESTful 接口，所以不需要安装 TDengine 客户端即可使用。
+taosKeeper 是 TDengine 3.0 版本监控指标的导出工具，通过简单的几项配置即可获取 TDengine 的运行状态。taosKeeper 使用 TDengine RESTful 接口，所以不需要安装 TDengine 客户端即可使用。
 
 ## 安装
 

docs/zh/25-application/01-telegraf.md

@@ -67,7 +67,7 @@ sudo systemctl start telegraf
 
 使用 Web 浏览器访问 `IP:3000` 登录 Grafana 界面，系统初始用户名密码为 admin/admin。
 点击左侧齿轮图标并选择 `Plugins`，应该可以找到 TDengine data source 插件图标。
-点击左侧加号图标并选择 `Import`，从 `https://github.com/taosdata/grafanaplugin/blob/master/examples/telegraf/grafana/dashboards/telegraf-dashboard-v0.1.0.json` 下载 dashboard JSON 文件后导入。之后可以看到如下界面的仪表盘：
+点击左侧加号图标并选择 `Import`，从 `https://github.com/taosdata/grafanaplugin/blob/master/examples/telegraf/grafana/dashboards/telegraf-dashboard-v3.json` (适配 TDengine 3.0, 如果使用 TDengine 2.x， 请下载 `telegraf-dashboard-v2.json`) 下载 dashboard JSON 文件后导入。之后可以看到如下界面的仪表盘：
 
 ![TDengine Database IT-DevOps-Solutions-telegraf-dashboard](./IT-DevOps-Solutions-telegraf-dashboard.webp)
 

include/common/tglobal.h

@@ -50,6 +50,7 @@ extern int32_t tsTagFilterResCacheSize;
 // queue & threads
 extern int32_t tsNumOfRpcThreads;
 extern int32_t tsNumOfRpcSessions;
+extern int32_t tsTimeToGetAvailableConn;
 extern int32_t tsNumOfCommitThreads;
 extern int32_t tsNumOfTaskQueueThreads;
 extern int32_t tsNumOfMnodeQueryThreads;

include/libs/transport/trpc.h

@@ -114,7 +114,7 @@ typedef struct SRpcInit {
 
   int32_t connLimitNum;
   int32_t connLimitLock;
-
+  int32_t timeToGetConn;
   int8_t  supportBatch;  // 0: no batch, 1. batch
   int32_t batchSize;
   void   *parent;

include/os/osMemory.h

@@ -29,11 +29,10 @@ extern "C" {
 #define calloc  CALLOC_FUNC_TAOS_FORBID
 #define realloc REALLOC_FUNC_TAOS_FORBID
 #define free    FREE_FUNC_TAOS_FORBID
-#ifdef  strdup
+#ifdef strdup
-#undef  strdup
+#undef strdup
 #define strdup  STRDUP_FUNC_TAOS_FORBID
 #endif
-
 #endif // ifndef ALLOW_FORBID_FUNC
 #endif // if !defined(WINDOWS)
 

include/util/ttrace.h

@@ -59,11 +59,13 @@ typedef struct STraceId {
     char*   _t = _buf;                                            \
     _t[0] = '0';                                                  \
     _t[1] = 'x';                                                  \
-    _t += titoa(rootId, 16, &_t[2]);                              \
+    _t += 2;                                                      \
+    _t += titoa(rootId, 16, &_t[0]);                              \
     _t[0] = ':';                                                  \
     _t[1] = '0';                                                  \
     _t[2] = 'x';                                                  \
-    _t += titoa(msgId, 16, &_t[3]);                               \
+    _t += 3;                                                      \
+    _t += titoa(msgId, 16, &_t[0]);                               \
   } while (0)
 
 #ifdef __cplusplus

source/client/src/clientEnv.c

@@ -144,7 +144,7 @@ void *openTransporter(const char *user, const char *auth, int32_t numOfThread) {
   memset(&rpcInit, 0, sizeof(rpcInit));
   rpcInit.localPort = 0;
   rpcInit.label = "TSC";
-  rpcInit.numOfThreads = numOfThread;
+  rpcInit.numOfThreads = tsNumOfRpcThreads;
   rpcInit.cfp = processMsgFromServer;
   rpcInit.rfp = clientRpcRfp;
   rpcInit.sessions = 1024;
@@ -159,6 +159,12 @@ void *openTransporter(const char *user, const char *auth, int32_t numOfThread) {
   rpcInit.retryMaxInterval = tsRedirectMaxPeriod;
   rpcInit.retryMaxTimouet = tsMaxRetryWaitTime;
 
+  int32_t connLimitNum = tsNumOfRpcSessions / (tsNumOfRpcThreads * 5);
+  connLimitNum = TMAX(connLimitNum, 10);
+  connLimitNum = TMIN(connLimitNum, 500);
+  rpcInit.connLimitNum = connLimitNum;
+  rpcInit.timeToGetConn = tsTimeToGetAvailableConn;
+
   void *pDnodeConn = rpcOpen(&rpcInit);
   if (pDnodeConn == NULL) {
     tscError("failed to init connection to server");
@@ -517,7 +523,7 @@ void taos_init_imp(void) {
     if (code) {
       printf("failed to init memory dbg, error:%s\n", tstrerror(code));
     } else {
-      tsAsyncLog = false;    
+      tsAsyncLog = false;
       printf("memory dbg enabled\n");
     }
   }

source/client/src/clientImpl.c

@@ -192,7 +192,7 @@ int32_t buildRequest(uint64_t connId, const char* sql, int sqlLen, void* param,
   (*pRequest)->sqlLen = sqlLen;
   (*pRequest)->validateOnly = validateSql;
 
-  SSyncQueryParam* newpParam;
+  SSyncQueryParam* newpParam = NULL;
   if (param == NULL) {
     newpParam = taosMemoryCalloc(1, sizeof(SSyncQueryParam));
     if (newpParam == NULL) {
@@ -1545,7 +1545,7 @@ void* doFetchRows(SRequestObj* pRequest, bool setupOneRowPtr, bool convertUcs4)
     }
 
     pRequest->code =
-        setQueryResultFromRsp(&pRequest->body.resInfo, (SRetrieveTableRsp*)pResInfo->pData, convertUcs4, true);
+        setQueryResultFromRsp(&pRequest->body.resInfo, (const SRetrieveTableRsp*)pResInfo->pData, convertUcs4, true);
     if (pRequest->code != TSDB_CODE_SUCCESS) {
       pResultInfo->numOfRows = 0;
       return NULL;
@@ -2034,6 +2034,12 @@ TSDB_SERVER_STATUS taos_check_server_status(const char* fqdn, int port, char* de
   rpcInit.compressSize = tsCompressMsgSize;
   rpcInit.user = "_dnd";
 
+  int32_t connLimitNum = tsNumOfRpcSessions / (tsNumOfRpcThreads * 3);
+  connLimitNum = TMAX(connLimitNum, 10);
+  connLimitNum = TMIN(connLimitNum, 500);
+  rpcInit.connLimitNum = connLimitNum;
+  rpcInit.timeToGetConn = tsTimeToGetAvailableConn;
+
   clientRpc = rpcOpen(&rpcInit);
   if (clientRpc == NULL) {
     tscError("failed to init server status client");

source/client/src/clientMain.c

@@ -1016,7 +1016,7 @@ static void fetchCallback(void *pResult, void *param, int32_t code) {
   }
 
   pRequest->code =
-      setQueryResultFromRsp(pResultInfo, (SRetrieveTableRsp *)pResultInfo->pData, pResultInfo->convertUcs4, true);
+      setQueryResultFromRsp(pResultInfo, (const SRetrieveTableRsp *)pResultInfo->pData, pResultInfo->convertUcs4, true);
   if (pRequest->code != TSDB_CODE_SUCCESS) {
     pResultInfo->numOfRows = 0;
     pRequest->code = code;

source/client/src/clientMsgHandler.c

@@ -497,6 +497,9 @@ int32_t processShowVariablesRsp(void* param, SDataBuf* pMsg, int32_t code) {
       code = setQueryResultFromRsp(&pRequest->body.resInfo, pRes, false, true);
     }
 
+    if(code != 0){
+      taosMemoryFree(pRes);
+    }
     tFreeSShowVariablesRsp(&rsp);
   }
 

source/client/src/clientSml.c

@@ -1154,13 +1154,16 @@ static int32_t smlParseLineBottom(SSmlHandle *info) {
     SSmlLineInfo  *elements = info->lines + i;
     SSmlTableInfo *tinfo = NULL;
     if (info->protocol == TSDB_SML_LINE_PROTOCOL) {
-      tinfo = *(SSmlTableInfo **)taosHashGet(info->childTables, elements->measure, elements->measureTagsLen);
+      SSmlTableInfo** tmp = (SSmlTableInfo **)taosHashGet(info->childTables, elements->measure, elements->measureTagsLen);
+      if(tmp) tinfo = *tmp;
     } else if (info->protocol == TSDB_SML_TELNET_PROTOCOL) {
-      tinfo = *(SSmlTableInfo **)taosHashGet(info->childTables, elements->measureTag,
+      SSmlTableInfo** tmp = (SSmlTableInfo **)taosHashGet(info->childTables, elements->measureTag,
                                              elements->measureLen + elements->tagsLen);
+      if(tmp) tinfo = *tmp;
     } else {
-      tinfo = *(SSmlTableInfo **)taosHashGet(info->childTables, elements->measureTag,
+      SSmlTableInfo** tmp = (SSmlTableInfo **)taosHashGet(info->childTables, elements->measureTag,
                                              elements->measureLen + elements->tagsLen);
+      if(tmp) tinfo = *tmp;
     }
 
     if (tinfo == NULL) {

source/client/src/clientSmlJson.c

@@ -1279,10 +1279,11 @@ int32_t smlParseJSON(SSmlHandle *info, char *payload) {
       if (cnt >= payloadNum) {
         payloadNum = payloadNum << 1;
         void *tmp = taosMemoryRealloc(info->lines, payloadNum * sizeof(SSmlLineInfo));
-        if (tmp != NULL) {
+        if (tmp == NULL) {
-          info->lines = (SSmlLineInfo *)tmp;
+          return TSDB_CODE_OUT_OF_MEMORY;
-          memset(info->lines + cnt, 0, (payloadNum - cnt) * sizeof(SSmlLineInfo));
         }
+        info->lines = (SSmlLineInfo *)tmp;
+        memset(info->lines + cnt, 0, (payloadNum - cnt) * sizeof(SSmlLineInfo));
       }
       ret = smlParseJSONString(info, &dataPointStart, info->lines + cnt);
       if ((info->lines + cnt)->measure == NULL) break;

source/common/src/tglobal.c

@@ -41,7 +41,8 @@ bool    tsPrintAuth = false;
 
 // queue & threads
 int32_t tsNumOfRpcThreads = 1;
-int32_t tsNumOfRpcSessions = 2000;
+int32_t tsNumOfRpcSessions = 5000;
+int32_t tsTimeToGetAvailableConn = 100000;
 int32_t tsNumOfCommitThreads = 2;
 int32_t tsNumOfTaskQueueThreads = 4;
 int32_t tsNumOfMnodeQueryThreads = 4;
@@ -326,6 +327,12 @@ static int32_t taosAddClientCfg(SConfig *pCfg) {
   if (cfgAddBool(pCfg, "useAdapter", tsUseAdapter, true) != 0) return -1;
   if (cfgAddBool(pCfg, "crashReporting", tsEnableCrashReport, true) != 0) return -1;
 
+  tsNumOfRpcSessions = TRANGE(tsNumOfRpcSessions, 100, 100000);
+  if (cfgAddInt32(pCfg, "numOfRpcSessions", tsNumOfRpcSessions, 1, 100000, 0) != 0) return -1;
+
+  tsTimeToGetAvailableConn = TRANGE(tsTimeToGetAvailableConn, 20, 10000000);
+  if (cfgAddInt32(pCfg, "timeToGetAvailableConn", tsTimeToGetAvailableConn, 20, 1000000, 0) != 0) return -1;
+
   tsNumOfTaskQueueThreads = tsNumOfCores / 2;
   tsNumOfTaskQueueThreads = TMAX(tsNumOfTaskQueueThreads, 4);
   if (tsNumOfTaskQueueThreads >= 10) {
@@ -397,6 +404,9 @@ static int32_t taosAddServerCfg(SConfig *pCfg) {
   tsNumOfRpcSessions = TRANGE(tsNumOfRpcSessions, 100, 10000);
   if (cfgAddInt32(pCfg, "numOfRpcSessions", tsNumOfRpcSessions, 1, 100000, 0) != 0) return -1;
 
+  tsTimeToGetAvailableConn = TRANGE(tsTimeToGetAvailableConn, 20, 1000000);
+  if (cfgAddInt32(pCfg, "timeToGetAvailableConn", tsNumOfRpcSessions, 20, 1000000, 0) != 0) return -1;
+
   tsNumOfCommitThreads = tsNumOfCores / 2;
   tsNumOfCommitThreads = TRANGE(tsNumOfCommitThreads, 2, 4);
   if (cfgAddInt32(pCfg, "numOfCommitThreads", tsNumOfCommitThreads, 1, 1024, 0) != 0) return -1;
@@ -517,6 +527,14 @@ static int32_t taosUpdateServerCfg(SConfig *pCfg) {
     pItem->stype = stype;
   }
 
+  pItem = cfgGetItem(tsCfg, "timeToGetAvailableConn");
+  if (pItem != NULL && pItem->stype == CFG_STYPE_DEFAULT) {
+    tsTimeToGetAvailableConn = 1000;
+    tsTimeToGetAvailableConn = TRANGE(tsTimeToGetAvailableConn, 20, 1000000);
+    pItem->i32 = tsTimeToGetAvailableConn;
+    pItem->stype = stype;
+  }
+
   pItem = cfgGetItem(tsCfg, "numOfCommitThreads");
   if (pItem != NULL && pItem->stype == CFG_STYPE_DEFAULT) {
     tsNumOfCommitThreads = numOfCores / 2;
@@ -698,6 +716,10 @@ static int32_t taosSetClientCfg(SConfig *pCfg) {
   tsEnableCrashReport = cfgGetItem(pCfg, "crashReporting")->bval;
 
   tsMaxRetryWaitTime = cfgGetItem(pCfg, "maxRetryWaitTime")->i32;
+
+  tsNumOfRpcSessions = cfgGetItem(pCfg, "numOfRpcSessions")->i32;
+
+  tsTimeToGetAvailableConn = cfgGetItem(pCfg, "timeToGetAvailableConn")->i32;
   return 0;
 }
 
@@ -735,6 +757,8 @@ static int32_t taosSetServerCfg(SConfig *pCfg) {
 
   tsNumOfRpcThreads = cfgGetItem(pCfg, "numOfRpcThreads")->i32;
   tsNumOfRpcSessions = cfgGetItem(pCfg, "numOfRpcSessions")->i32;
+  tsTimeToGetAvailableConn = cfgGetItem(pCfg, "timeToGetAvailableConn")->i32;
+
   tsNumOfCommitThreads = cfgGetItem(pCfg, "numOfCommitThreads")->i32;
   tsNumOfMnodeReadThreads = cfgGetItem(pCfg, "numOfMnodeReadThreads")->i32;
   tsNumOfVnodeQueryThreads = cfgGetItem(pCfg, "numOfVnodeQueryThreads")->i32;
@@ -742,7 +766,7 @@ static int32_t taosSetServerCfg(SConfig *pCfg) {
   tsNumOfVnodeFetchThreads = cfgGetItem(pCfg, "numOfVnodeFetchThreads")->i32;
   tsNumOfVnodeRsmaThreads = cfgGetItem(pCfg, "numOfVnodeRsmaThreads")->i32;
   tsNumOfQnodeQueryThreads = cfgGetItem(pCfg, "numOfQnodeQueryThreads")->i32;
-  //  tsNumOfQnodeFetchThreads = cfgGetItem(pCfg, "numOfQnodeFetchThreads")->i32;
+  //  tsNumOfQnodeFetchThreads = cfgGetItem(pCfg, "numOfQnodeFetchTereads")->i32;
   tsNumOfSnodeStreamThreads = cfgGetItem(pCfg, "numOfSnodeSharedThreads")->i32;
   tsNumOfSnodeWriteThreads = cfgGetItem(pCfg, "numOfSnodeUniqueThreads")->i32;
   tsRpcQueueMemoryAllowed = cfgGetItem(pCfg, "rpcQueueMemoryAllowed")->i64;

source/dnode/mgmt/node_mgmt/src/dmTransport.c

@@ -93,15 +93,15 @@ static void dmProcessRpcMsg(SDnode *pDnode, SRpcMsg *pRpc, SEpSet *pEpSet) {
       break;
   }
 
-/*
+  /*
-pDnode is null, TD-22618
+  pDnode is null, TD-22618
-at trans.c line 91
+  at trans.c line 91
-before this line, dmProcessRpcMsg callback is set
+  before this line, dmProcessRpcMsg callback is set
-after this line, parent is set
+  after this line, parent is set
-so when dmProcessRpcMsg is called, pDonde is still null.
+  so when dmProcessRpcMsg is called, pDonde is still null.
-*/
+  */
-  if (pDnode != NULL){
+  if (pDnode != NULL) {
-    if(pDnode->status != DND_STAT_RUNNING) {
+    if (pDnode->status != DND_STAT_RUNNING) {
       if (pRpc->msgType == TDMT_DND_SERVER_STATUS) {
         dmProcessServerStartupStatus(pDnode, pRpc);
         return;
@@ -113,7 +113,7 @@ so when dmProcessRpcMsg is called, pDonde is still null.
         }
         goto _OVER;
       }
-    }   
+    }
   } else {
     terrno = TSDB_CODE_APP_IS_STARTING;
     goto _OVER;
@@ -304,6 +304,7 @@ int32_t dmInitClient(SDnode *pDnode) {
   rpcInit.connLimitLock = 1;
   rpcInit.supportBatch = 1;
   rpcInit.batchSize = 8 * 1024;
+  rpcInit.timeToGetConn = tsTimeToGetAvailableConn;
 
   pTrans->clientRpc = rpcOpen(&rpcInit);
   if (pTrans->clientRpc == NULL) {

source/dnode/mnode/impl/src/mndConsumer.c

@@ -15,17 +15,11 @@
 
 #define _DEFAULT_SOURCE
 #include "mndConsumer.h"
-#include "mndDb.h"
-#include "mndDnode.h"
-#include "mndMnode.h"
 #include "mndPrivilege.h"
 #include "mndShow.h"
-#include "mndStb.h"
 #include "mndSubscribe.h"
 #include "mndTopic.h"
 #include "mndTrans.h"
-#include "mndUser.h"
-#include "mndVgroup.h"
 #include "tcompare.h"
 #include "tname.h"
 
@@ -209,6 +203,7 @@ static int32_t mndProcessConsumerClearMsg(SRpcMsg *pMsg) {
   taosMemoryFree(pConsumerNew);
   mndTransDrop(pTrans);
   return 0;
+
 FAIL:
   tDeleteSMqConsumerObj(pConsumerNew);
   taosMemoryFree(pConsumerNew);
@@ -580,6 +575,10 @@ static int32_t validateTopics(const SArray* pTopicList, SMnode* pMnode, const ch
   return 0;
 }
 
+static void* topicNameDup(void* p){
+  return taosStrdup((char*) p);
+}
+
 int32_t mndProcessSubscribeReq(SRpcMsg *pMsg) {
   SMnode *pMnode = pMsg->info.node;
   char   *msgStr = pMsg->pCont;
@@ -616,15 +615,16 @@ int32_t mndProcessSubscribeReq(SRpcMsg *pMsg) {
 
     pConsumerNew = tNewSMqConsumerObj(consumerId, cgroup);
     tstrncpy(pConsumerNew->clientId, subscribe.clientId, 256);
-    pConsumerNew->updateType = CONSUMER_UPDATE__MODIFY;
-    taosArrayDestroy(pConsumerNew->rebNewTopics);
-    pConsumerNew->rebNewTopics = pTopicList;  // all subscribe topics should re-balance.
-    subscribe.topicNames = NULL;
 
-    for (int32_t i = 0; i < newTopicNum; i++) {
+    // set the update type
-      char *newTopicCopy = taosStrdup(taosArrayGetP(pTopicList, i));
+    pConsumerNew->updateType = CONSUMER_UPDATE__MODIFY;
-      taosArrayPush(pConsumerNew->assignedTopics, &newTopicCopy);
+    taosArrayDestroy(pConsumerNew->assignedTopics);
-    }
+    pConsumerNew->assignedTopics = taosArrayDup(pTopicList, topicNameDup);
+
+    // all subscribed topics should re-balance.
+    taosArrayDestroy(pConsumerNew->rebNewTopics);
+    pConsumerNew->rebNewTopics = pTopicList;
+    subscribe.topicNames = NULL;
 
     if (mndSetConsumerCommitLogs(pMnode, pTrans, pConsumerNew) != 0) goto _over;
     if (mndTransPrepare(pMnode, pTrans) != 0) goto _over;
@@ -646,17 +646,12 @@ int32_t mndProcessSubscribeReq(SRpcMsg *pMsg) {
       goto _over;
     }
 
+    // set the update type
     pConsumerNew->updateType = CONSUMER_UPDATE__MODIFY;
+    taosArrayDestroy(pConsumerNew->assignedTopics);
+    pConsumerNew->assignedTopics = taosArrayDup(pTopicList, topicNameDup);
 
-    for (int32_t i = 0; i < newTopicNum; i++) {
+    int32_t oldTopicNum = (pExistedConsumer->currentTopics)? taosArrayGetSize(pExistedConsumer->currentTopics):0;
-      char *newTopicCopy = taosStrdup(taosArrayGetP(pTopicList, i));
-      taosArrayPush(pConsumerNew->assignedTopics, &newTopicCopy);
-    }
-
-    int32_t oldTopicNum = 0;
-    if (pExistedConsumer->currentTopics) {
-      oldTopicNum = taosArrayGetSize(pExistedConsumer->currentTopics);
-    }
 
     int32_t i = 0, j = 0;
     while (i < oldTopicNum || j < newTopicNum) {
@@ -692,11 +687,8 @@ int32_t mndProcessSubscribeReq(SRpcMsg *pMsg) {
       }
     }
 
-    if (pExistedConsumer && taosArrayGetSize(pConsumerNew->rebNewTopics) == 0 &&
+    // no topics need to be rebalanced
-        taosArrayGetSize(pConsumerNew->rebRemovedTopics) == 0) {
+    if (taosArrayGetSize(pConsumerNew->rebNewTopics) == 0 && taosArrayGetSize(pConsumerNew->rebRemovedTopics) == 0) {
-      /*if (taosArrayGetSize(pConsumerNew->assignedTopics) == 0) {*/
-      /*pConsumerNew->updateType = */
-      /*}*/
       goto _over;
     }
 
@@ -718,8 +710,9 @@ _over:
     tDeleteSMqConsumerObj(pConsumerNew);
     taosMemoryFree(pConsumerNew);
   }
+
   // TODO: replace with destroy subscribe msg
-  if (subscribe.topicNames) taosArrayDestroyP(subscribe.topicNames, (FDelete)taosMemoryFree);
+  taosArrayDestroyP(subscribe.topicNames, (FDelete)taosMemoryFree);
   return code;
 }
 
@@ -750,12 +743,12 @@ SSdbRaw *mndConsumerActionEncode(SMqConsumerObj *pConsumer) {
 CM_ENCODE_OVER:
   taosMemoryFreeClear(buf);
   if (terrno != 0) {
-    mError("consumer:%" PRId64 ", failed to encode to raw:%p since %s", pConsumer->consumerId, pRaw, terrstr());
+    mError("consumer:0x%" PRIx64 " failed to encode to raw:%p since %s", pConsumer->consumerId, pRaw, terrstr());
     sdbFreeRaw(pRaw);
     return NULL;
   }
 
-  mTrace("consumer:%" PRId64 ", encode to raw:%p, row:%p", pConsumer->consumerId, pRaw, pConsumer);
+  mTrace("consumer:0x%" PRIx64 ", encode to raw:%p, row:%p", pConsumer->consumerId, pRaw, pConsumer);
   return pRaw;
 }
 
@@ -823,8 +816,8 @@ static int32_t mndConsumerActionInsert(SSdb *pSdb, SMqConsumerObj *pConsumer) {
 }
 
 static int32_t mndConsumerActionDelete(SSdb *pSdb, SMqConsumerObj *pConsumer) {
-  mDebug("consumer:0x%" PRIx64 " perform delete action, status:%s", pConsumer->consumerId,
+  mDebug("consumer:0x%" PRIx64 " perform delete action, status:(%d)%s", pConsumer->consumerId,
-         mndConsumerStatusName(pConsumer->status));
+         pConsumer->status, mndConsumerStatusName(pConsumer->status));
   tDeleteSMqConsumerObj(pConsumer);
   return 0;
 }
@@ -1075,22 +1068,23 @@ static int32_t mndRetrieveConsumer(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *
 
       // consumer group
       char cgroup[TSDB_CGROUP_LEN + VARSTR_HEADER_SIZE] = {0};
-      tstrncpy(varDataVal(cgroup), pConsumer->cgroup, TSDB_CGROUP_LEN);
+      STR_TO_VARSTR(cgroup, pConsumer->cgroup);
-      varDataSetLen(cgroup, strlen(varDataVal(cgroup)));
+
       pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
       colDataSetVal(pColInfo, numOfRows, (const char *)cgroup, false);
 
       // client id
       char clientId[256 + VARSTR_HEADER_SIZE] = {0};
-      tstrncpy(varDataVal(clientId), pConsumer->clientId, 256);
+      STR_TO_VARSTR(clientId, pConsumer->clientId);
-      varDataSetLen(clientId, strlen(varDataVal(clientId)));
+
       pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
       colDataSetVal(pColInfo, numOfRows, (const char *)clientId, false);
 
       // status
       char status[20 + VARSTR_HEADER_SIZE] = {0};
-      tstrncpy(varDataVal(status), mndConsumerStatusName(pConsumer->status), 20);
+      const char* pStatusName = mndConsumerStatusName(pConsumer->status);
-      varDataSetLen(status, strlen(varDataVal(status)));
+      STR_TO_VARSTR(status, pStatusName);
+
       pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
       colDataSetVal(pColInfo, numOfRows, (const char *)status, false);
 
@@ -1123,8 +1117,11 @@ static int32_t mndRetrieveConsumer(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *
 
       numOfRows++;
     }
+
     taosRUnLockLatch(&pConsumer->lock);
     sdbRelease(pSdb, pConsumer);
+
+    pBlock->info.rows = numOfRows;
   }
 
   pShow->numOfRows += numOfRows;

source/dnode/mnode/impl/src/mndScheduler.c

@@ -115,7 +115,7 @@ int32_t mndAddDispatcherToInnerTask(SMnode* pMnode, SStreamObj* pStream, SStream
 
   if (pStream->fixedSinkVgId == 0) {
     SDbObj* pDb = mndAcquireDb(pMnode, pStream->targetDb);
-    if (pDb->cfg.numOfVgroups > 1) {
+    if (pDb != NULL && pDb->cfg.numOfVgroups > 1) {
       isShuffle = true;
       pTask->outputType = TASK_OUTPUT__SHUFFLE_DISPATCH;
       pTask->dispatchMsgType = TDMT_STREAM_TASK_DISPATCH;

source/dnode/mnode/impl/src/mndShow.c

@@ -134,7 +134,7 @@ static SShowObj *mndCreateShowObj(SMnode *pMnode, SRetrieveTableReq *pReq) {
   showObj.pMnode = pMnode;
   showObj.type = convertToRetrieveType(pReq->tb, tListLen(pReq->tb));
   memcpy(showObj.db, pReq->db, TSDB_DB_FNAME_LEN);
-  strncpy(showObj.filterTb, pReq->filterTb, TSDB_TABLE_NAME_LEN);
+  tstrncpy(showObj.filterTb, pReq->filterTb, TSDB_TABLE_NAME_LEN);
 
   int32_t   keepTime = tsShellActivityTimer * 6 * 1000;
   SShowObj *pShow = taosCachePut(pMgmt->cache, &showId, sizeof(int64_t), &showObj, size, keepTime);

source/dnode/mnode/impl/src/mndSubscribe.c

@@ -16,15 +16,10 @@
 #define _DEFAULT_SOURCE
 #include "mndSubscribe.h"
 #include "mndConsumer.h"
-#include "mndDb.h"
-#include "mndDnode.h"
-#include "mndMnode.h"
 #include "mndScheduler.h"
 #include "mndShow.h"
-#include "mndStb.h"
 #include "mndTopic.h"
 #include "mndTrans.h"
-#include "mndUser.h"
 #include "mndVgroup.h"
 #include "tcompare.h"
 #include "tname.h"
@@ -1041,7 +1036,6 @@ int32_t mndRetrieveSubscribe(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *pBlock
     }
 
     // do not show for cleared subscription
-#if 1
     int32_t sz = taosArrayGetSize(pSub->unassignedVgs);
     for (int32_t i = 0; i < sz; i++) {
       SMqVgEp *pVgEp = taosArrayGetP(pSub->unassignedVgs, i);
@@ -1087,8 +1081,6 @@ int32_t mndRetrieveSubscribe(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *pBlock
       numOfRows++;
     }
 
-#endif
-
     pBlock->info.rows = numOfRows;
 
     taosRUnLockLatch(&pSub->lock);

source/dnode/vnode/CMakeLists.txt

@@ -15,6 +15,7 @@ target_sources(
     "src/vnd/vnodeSync.c"
     "src/vnd/vnodeSnapshot.c"
     "src/vnd/vnodeCompact.c"
+    "src/vnd/vnodeRetention.c"
 
     # meta
     "src/meta/metaOpen.c"

source/dnode/vnode/src/inc/vnodeInt.h

@@ -180,7 +180,6 @@ int32_t tsdbCommit(STsdb* pTsdb, SCommitInfo* pInfo);
 int32_t tsdbCompact(STsdb* pTsdb, SCompactInfo* pInfo);
 int32_t tsdbFinishCommit(STsdb* pTsdb);
 int32_t tsdbRollbackCommit(STsdb* pTsdb);
-int32_t tsdbDoRetention(STsdb* pTsdb, int64_t now);
 int     tsdbScanAndConvertSubmitMsg(STsdb* pTsdb, SSubmitReq2* pMsg);
 int     tsdbInsertData(STsdb* pTsdb, int64_t version, SSubmitReq2* pMsg, SSubmitRsp2* pRsp);
 int32_t tsdbInsertTableData(STsdb* pTsdb, int64_t version, SSubmitTbData* pSubmitTbData, int32_t* affectedRows);

source/dnode/vnode/src/sma/smaRollup.c

@@ -595,6 +595,7 @@ static int32_t tdFetchSubmitReqSuids(SSubmitReq2 *pMsg, STbUidStore *pStore) {
   return 0;
 }
 
+#if 0
 /**
  * @brief retention of rsma1/rsma2
  *
@@ -618,6 +619,7 @@ int32_t smaDoRetention(SSma *pSma, int64_t now) {
 _end:
   return code;
 }
+#endif
 
 static void tdBlockDataDestroy(SArray *pBlockArr) {
   for (int32_t i = 0; i < taosArrayGetSize(pBlockArr); ++i) {

source/dnode/vnode/src/tq/tq.c

@@ -217,7 +217,7 @@ int32_t tqPushDataRsp(STQ* pTq, STqPushEntry* pPushEntry) {
   char buf2[80] = {0};
   tFormatOffset(buf1, tListLen(buf1), &pRsp->reqOffset);
   tFormatOffset(buf2, tListLen(buf2), &pRsp->rspOffset);
-  tqDebug("vgId:%d, from consumer:0x%" PRIx64 " (epoch %d) push rsp, block num: %d, reqOffset:%s, rspOffset:%s",
+  tqDebug("vgId:%d, from consumer:0x%" PRIx64 " (epoch %d) push rsp, block num: %d, req:%s, rsp:%s",
           TD_VID(pTq->pVnode), pRsp->head.consumerId, pRsp->head.epoch, pRsp->blockNum, buf1, buf2);
 
   return 0;
@@ -275,7 +275,7 @@ int32_t tqSendDataRsp(STQ* pTq, const SRpcMsg* pMsg, const SMqPollReq* pReq, con
   char buf2[80] = {0};
   tFormatOffset(buf1, 80, &pRsp->reqOffset);
   tFormatOffset(buf2, 80, &pRsp->rspOffset);
-  tqDebug("vgId:%d consumer:0x%" PRIx64 " (epoch %d), block num:%d, reqOffset:%s, rspOffset:%s",
+  tqDebug("vgId:%d consumer:0x%" PRIx64 " (epoch %d), block num:%d, req:%s, rsp:%s",
           TD_VID(pTq->pVnode), pReq->consumerId, pReq->epoch, pRsp->blockNum, buf1, buf2);
 
   return 0;
@@ -604,7 +604,7 @@ int32_t tqProcessPollReq(STQ* pTq, SRpcMsg* pMsg) {
       code = -1;
     }
 
-    tqDebug("tmq poll: consumer:0x%" PRIx64 ", subkey %s, vgId:%d, rsp data block:%d, offset type:%d, uid/version:%" PRId64 ", ts:%" PRId64 "",
+    tqDebug("tmq poll: consumer:0x%" PRIx64 ", subkey %s, vgId:%d, rsp block:%d, offset type:%d, uid/version:%" PRId64 ", ts:%" PRId64 "",
             consumerId, pHandle->subKey, TD_VID(pTq->pVnode), dataRsp.blockNum, dataRsp.rspOffset.type,
             dataRsp.rspOffset.uid, dataRsp.rspOffset.ts);
 

source/dnode/vnode/src/tq/tqExec.c

@@ -113,9 +113,7 @@ int32_t tqScanData(STQ* pTq, const STqHandle* pHandle, SMqDataRsp* pRsp, STqOffs
     return -1;
   }
 
-  ASSERT(pRsp->withTbName == false);
+  ASSERT(!(pRsp->withTbName || pRsp->withSchema));
-  ASSERT(pRsp->withSchema == false);
-
   return 0;
 }
 

source/dnode/vnode/src/tq/tqMeta.c

@@ -197,7 +197,7 @@ int32_t tqMetaSaveHandle(STQ* pTq, const char* key, const STqHandle* pHandle) {
     return -1;
   }
 
-  tqDebug("tq save %s(%d) handle consumer:0x%" PRIx64 "epoch:%d  vgId:%d", pHandle->subKey,
+  tqDebug("tq save %s(%d) handle consumer:0x%" PRIx64 " epoch:%d vgId:%d", pHandle->subKey,
           (int32_t)strlen(pHandle->subKey), pHandle->consumerId, pHandle->epoch, TD_VID(pTq->pVnode));
 
   void* buf = taosMemoryCalloc(1, vlen);
@@ -269,6 +269,7 @@ int32_t tqMetaDeleteHandle(STQ* pTq, const char* key) {
 }
 
 int32_t tqMetaRestoreHandle(STQ* pTq) {
+  int code = 0;
   TBC* pCur = NULL;
   if (tdbTbcOpen(pTq->pExecStore, &pCur, NULL) < 0) {
     return -1;
@@ -290,7 +291,8 @@ int32_t tqMetaRestoreHandle(STQ* pTq) {
 
     handle.pRef = walOpenRef(pTq->pVnode->pWal);
     if (handle.pRef == NULL) {
-      return -1;
+      code = -1;
+      goto end;
     }
     walRefVer(handle.pRef, handle.snapshotVer);
 
@@ -307,16 +309,21 @@ int32_t tqMetaRestoreHandle(STQ* pTq) {
           qCreateQueueExecTaskInfo(handle.execHandle.execCol.qmsg, &reader, &handle.execHandle.numOfCols, NULL);
       if (handle.execHandle.task == NULL) {
         tqError("cannot create exec task for %s", handle.subKey);
-        return -1;
+        code = -1;
+        goto end;
       }
       void* scanner = NULL;
       qExtractStreamScanner(handle.execHandle.task, &scanner);
       if (scanner == NULL) {
         tqError("cannot extract stream scanner for %s", handle.subKey);
+        code = -1;
+        goto end;
       }
       handle.execHandle.pExecReader = qExtractReaderFromStreamScanner(scanner);
       if (handle.execHandle.pExecReader == NULL) {
         tqError("cannot extract exec reader for %s", handle.subKey);
+        code = -1;
+        goto end;
       }
     } else if (handle.execHandle.subType == TOPIC_SUB_TYPE__DB) {
       handle.pWalReader = walOpenReader(pTq->pVnode->pWal, NULL);
@@ -347,8 +354,9 @@ int32_t tqMetaRestoreHandle(STQ* pTq) {
     taosHashPut(pTq->pHandle, pKey, kLen, &handle, sizeof(STqHandle));
   }
 
+end:
   tdbFree(pKey);
   tdbFree(pVal);
   tdbTbcClose(pCur);
-  return 0;
+  return code;
 }

source/dnode/vnode/src/tq/tqPush.c

@@ -193,7 +193,7 @@ int32_t tqPushMsgNew(STQ* pTq, void* msg, int32_t msgLen, tmsg_t msgType, int64_
     memset(&pHandle->pushHandle.rpcInfo, 0, sizeof(SRpcHandleInfo));
     taosWUnLockLatch(&pHandle->pushHandle.lock);
 
-    tqDebug("vgId:%d offset %" PRId64 " from consumer:%" PRId64 ", (epoch %d) send rsp, block num: %d, reqOffset:%" PRId64 ", rspOffset:%" PRId64,
+    tqDebug("vgId:%d offset %" PRId64 " from consumer:%" PRId64 ", (epoch %d) send rsp, block num: %d, req:%" PRId64 ", rsp:%" PRId64,
             TD_VID(pTq->pVnode), fetchOffset, pHandle->pushHandle.consumerId, pHandle->pushHandle.epoch, rsp.blockNum,
             rsp.reqOffset, rsp.rspOffset);
 
@@ -210,25 +210,30 @@ int tqPushMsg(STQ* pTq, void* msg, int32_t msgLen, tmsg_t msgType, int64_t ver)
   void*   pReq = POINTER_SHIFT(msg, sizeof(SSubmitReq2Msg));
   int32_t len = msgLen - sizeof(SSubmitReq2Msg);
 
-  tqDebug("vgId:%d tq push msg version:%" PRId64 " type: %s, p head %p, p body %p, len %d", pTq->pVnode->config.vgId, ver,
-          TMSG_INFO(msgType), msg, pReq, len);
-
   if (msgType == TDMT_VND_SUBMIT) {
     // lock push mgr to avoid potential msg lost
     taosWLockLatch(&pTq->pushLock);
-    if (taosHashGetSize(pTq->pPushMgr) != 0) {
 
-      tqDebug("vgId:%d, push handle num %d", pTq->pVnode->config.vgId, taosHashGetSize(pTq->pPushMgr));
+    int32_t numOfRegisteredPush = taosHashGetSize(pTq->pPushMgr);
+    if (numOfRegisteredPush > 0) {
+      tqDebug("vgId:%d tq push msg version:%" PRId64 " type:%s, head:%p, body:%p len:%d, numOfPushed consumers:%d",
+          pTq->pVnode->config.vgId, ver, TMSG_INFO(msgType), msg, pReq, len, numOfRegisteredPush);
+
       SArray* cachedKeys = taosArrayInit(0, sizeof(void*));
       SArray* cachedKeyLens = taosArrayInit(0, sizeof(size_t));
+
       void*   data = taosMemoryMalloc(len);
       if (data == NULL) {
         terrno = TSDB_CODE_OUT_OF_MEMORY;
         tqError("failed to copy data for stream since out of memory");
         taosArrayDestroyP(cachedKeys, (FDelete)taosMemoryFree);
         taosArrayDestroy(cachedKeyLens);
+
+        // unlock
+        taosWUnLockLatch(&pTq->pushLock);
         return -1;
       }
+
       memcpy(data, pReq, len);
 
       void* pIter = NULL;
@@ -262,7 +267,7 @@ int tqPushMsg(STQ* pTq, void* msg, int32_t msgLen, tmsg_t msgType, int64_t ver)
         };
         qStreamSetScanMemData(task, submit);
 
-        // exec
+        // here start to scan submit block to extract the subscribed data
         while (1) {
           SSDataBlock* pDataBlock = NULL;
           uint64_t     ts = 0;
@@ -278,7 +283,7 @@ int tqPushMsg(STQ* pTq, void* msg, int32_t msgLen, tmsg_t msgType, int64_t ver)
           pRsp->blockNum++;
         }
 
-        tqDebug("vgId:%d, tq handle push, subkey: %s, block num: %d", pTq->pVnode->config.vgId, pPushEntry->subKey,
+        tqDebug("vgId:%d, tq handle push, subkey:%s, block num:%d", pTq->pVnode->config.vgId, pPushEntry->subKey,
                 pRsp->blockNum);
         if (pRsp->blockNum > 0) {
           // set offset
@@ -295,6 +300,7 @@ int tqPushMsg(STQ* pTq, void* msg, int32_t msgLen, tmsg_t msgType, int64_t ver)
           tqPushDataRsp(pTq, pPushEntry);
         }
       }
+
       // delete entry
       for (int32_t i = 0; i < taosArrayGetSize(cachedKeys); i++) {
         void*  key = taosArrayGetP(cachedKeys, i);

source/dnode/vnode/src/tq/tqRead.c

@@ -291,10 +291,15 @@ void tqCloseReader(STqReader* pReader) {
 }
 
 int32_t tqSeekVer(STqReader* pReader, int64_t ver) {
+  // todo set the correct vgId
+  tqDebug("tmq poll: vgId:%d wal seek to version:%"PRId64, 0, ver);
   if (walReadSeekVer(pReader->pWalReader, ver) < 0) {
+    tqError("tmq poll: wal reader failed to seek to ver:%"PRId64, ver);
     return -1;
+  } else {
+    tqDebug("tmq poll: wal reader seek to ver:%"PRId64, ver);
+    return 0;
   }
-  return 0;
 }
 
 int32_t tqNextBlock(STqReader* pReader, SFetchRet* ret) {
@@ -302,28 +307,33 @@ int32_t tqNextBlock(STqReader* pReader, SFetchRet* ret) {
 
   while (1) {
     if (!fromProcessedMsg) {
-      if (walNextValidMsg(pReader->pWalReader) < 0) {
+      SWalReader* pWalReader = pReader->pWalReader;
-        pReader->ver =
+
-            pReader->pWalReader->curVersion - (pReader->pWalReader->curInvalid | pReader->pWalReader->curStopped);
+      if (walNextValidMsg(pWalReader) < 0) {
+        pReader->ver = pWalReader->curVersion - (pWalReader->curInvalid | pWalReader->curStopped);
         ret->offset.type = TMQ_OFFSET__LOG;
         ret->offset.version = pReader->ver;
         ret->fetchType = FETCH_TYPE__NONE;
         tqDebug("return offset %" PRId64 ", no more valid", ret->offset.version);
         return -1;
       }
-      void*   body = POINTER_SHIFT(pReader->pWalReader->pHead->head.body, sizeof(SSubmitReq2Msg));
+
-      int32_t bodyLen = pReader->pWalReader->pHead->head.bodyLen - sizeof(SSubmitReq2Msg);
+      void*   body = POINTER_SHIFT(pWalReader->pHead->head.body, sizeof(SSubmitReq2Msg));
-      int64_t ver = pReader->pWalReader->pHead->head.version;
+      int32_t bodyLen = pWalReader->pHead->head.bodyLen - sizeof(SSubmitReq2Msg);
+      int64_t ver = pWalReader->pHead->head.version;
+
+      tqDebug("tmq poll: extract submit msg from wal, version:%"PRId64" len:%d", ver, bodyLen);
+
 #if 0
-      if (pReader->pWalReader->pHead->head.msgType != TDMT_VND_SUBMIT) {
+      if (pWalReader->pHead->head.msgType != TDMT_VND_SUBMIT) {
         // TODO do filter
         ret->fetchType = FETCH_TYPE__META;
-        ret->meta = pReader->pWalReader->pHead->head.body;
+        ret->meta = pWalReader->pHead->head.body;
         return 0;
       } else {
 #endif
       tqReaderSetSubmitReq2(pReader, body, bodyLen, ver);
-      /*tqReaderSetDataMsg(pReader, body, pReader->pWalReader->pHead->head.version);*/
+      /*tqReaderSetDataMsg(pReader, body, pWalReader->pHead->head.version);*/
 #if 0
       }
 #endif
@@ -358,7 +368,7 @@ int32_t tqReaderSetDataMsg(STqReader* pReader, const SSubmitReq* pMsg, int64_t v
 //  if (tInitSubmitMsgIter(pMsg, &pReader->msgIter) < 0) return -1;
 //  while (true) {
 //    if (tGetSubmitMsgNext(&pReader->msgIter, &pReader->pBlock) < 0) return -1;
-//    tqDebug("submitnext vgId:%d, block:%p, dataLen:%d, len:%d, uid:%"PRId64, pReader->pWalReader->pWal->cfg.vgId, pReader->pBlock, pReader->msgIter.dataLen,
+//    tqDebug("submitnext vgId:%d, block:%p, dataLen:%d, len:%d, uid:%"PRId64, pWalReader->pWal->cfg.vgId, pReader->pBlock, pReader->msgIter.dataLen,
 //            pReader->msgIter.len, pReader->msgIter.uid);
 //    if (pReader->pBlock == NULL) break;
 //  }
@@ -371,10 +381,8 @@ int32_t tqReaderSetDataMsg(STqReader* pReader, const SSubmitReq* pMsg, int64_t v
 #endif
 
 int32_t tqReaderSetSubmitReq2(STqReader* pReader, void* msgStr, int32_t msgLen, int64_t ver) {
-  ASSERT(pReader->msg2.msgStr == NULL);
+  ASSERT(pReader->msg2.msgStr == NULL && msgStr && msgLen && (ver >= 0));
-  ASSERT(msgStr);
+
-  ASSERT(msgLen);
-  ASSERT(ver >= 0);
   pReader->msg2.msgStr = msgStr;
   pReader->msg2.msgLen = msgLen;
   pReader->msg2.ver = ver;
@@ -421,7 +429,10 @@ bool tqNextDataBlock(STqReader* pReader) {
 #endif
 
 bool tqNextDataBlock2(STqReader* pReader) {
-  if (pReader->msg2.msgStr == NULL) return false;
+  if (pReader->msg2.msgStr == NULL) {
+    return false;
+  }
+
   ASSERT(pReader->setMsg == 1);
 
   tqDebug("tq reader next data block %p, %d %" PRId64 " %d", pReader->msg2.msgStr, pReader->msg2.msgLen,
@@ -528,7 +539,7 @@ int32_t tqScanSubmitSplit(SArray* pBlocks, SArray* schemas, STqReader* pReader)
     if (pReader->pSchema == NULL) {
       tqWarn("vgId:%d, cannot found tsschema for table: uid:%" PRId64 " (suid:%" PRId64
              "), version %d, possibly dropped table",
-             pReader->pWalReader->pWal->cfg.vgId, pReader->msgIter.uid, pReader->msgIter.suid, sversion);
+             pWalReader->pWal->cfg.vgId, pReader->msgIter.uid, pReader->msgIter.suid, sversion);
       pReader->cachedSchemaSuid = 0;
       terrno = TSDB_CODE_TQ_TABLE_SCHEMA_NOT_FOUND;
       return -1;
@@ -538,7 +549,7 @@ int32_t tqScanSubmitSplit(SArray* pBlocks, SArray* schemas, STqReader* pReader)
     pReader->pSchemaWrapper = metaGetTableSchema(pReader->pVnodeMeta, pReader->msgIter.uid, sversion, 1);
     if (pReader->pSchemaWrapper == NULL) {
       tqWarn("vgId:%d, cannot found schema wrapper for table: suid:%" PRId64 ", version %d, possibly dropped table",
-             pReader->pWalReader->pWal->cfg.vgId, pReader->msgIter.uid, pReader->cachedSchemaVer);
+             pWalReader->pWal->cfg.vgId, pReader->msgIter.uid, pReader->cachedSchemaVer);
       pReader->cachedSchemaSuid = 0;
       terrno = TSDB_CODE_TQ_TABLE_SCHEMA_NOT_FOUND;
       return -1;

source/dnode/vnode/src/tq/tqSink.c

@@ -370,11 +370,6 @@ int32_t tqPutReqToQueue(SVnode* pVnode, SVCreateTbBatchReq* pReqs) {
   }
 
   return TSDB_CODE_SUCCESS;
-
-_error:
-  terrno = TSDB_CODE_OUT_OF_MEMORY;
-  tqError("failed to encode submit req since %s", terrstr());
-  return TSDB_CODE_OUT_OF_MEMORY;
 }
 
 void tqSinkToTablePipeline2(SStreamTask* pTask, void* vnode, int64_t ver, void* data) {
@@ -441,9 +436,6 @@ void tqSinkToTablePipeline2(SStreamTask* pTask, void* vnode, int64_t ver, void*
       for (int32_t rowId = 0; rowId < rows; rowId++) {
         SVCreateTbReq  createTbReq = {0};
         SVCreateTbReq* pCreateTbReq = &createTbReq;
-        if (!pCreateTbReq) {
-          goto _end;
-        }
 
         // set const
         pCreateTbReq->flags = 0;
@@ -460,6 +452,7 @@ void tqSinkToTablePipeline2(SStreamTask* pTask, void* vnode, int64_t ver, void*
         if (size == 2) {
           tagArray = taosArrayInit(1, sizeof(STagVal));
           if (!tagArray) {
+            tdDestroySVCreateTbReq(pCreateTbReq);
             goto _end;
           }
           STagVal tagVal = {
@@ -477,6 +470,7 @@ void tqSinkToTablePipeline2(SStreamTask* pTask, void* vnode, int64_t ver, void*
         } else {
           tagArray = taosArrayInit(size - 1, sizeof(STagVal));
           if (!tagArray) {
+            tdDestroySVCreateTbReq(pCreateTbReq);
             goto _end;
           }
           for (int32_t tagId = UD_TAG_COLUMN_INDEX, step = 1; tagId < size; tagId++, step++) {
@@ -503,6 +497,7 @@ void tqSinkToTablePipeline2(SStreamTask* pTask, void* vnode, int64_t ver, void*
         tTagNew(tagArray, 1, false, &pTag);
         tagArray = taosArrayDestroy(tagArray);
         if (pTag == NULL) {
+          tdDestroySVCreateTbReq(pCreateTbReq);
           terrno = TSDB_CODE_OUT_OF_MEMORY;
           goto _end;
         }
@@ -556,6 +551,7 @@ void tqSinkToTablePipeline2(SStreamTask* pTask, void* vnode, int64_t ver, void*
         SVCreateTbReq* pCreateTbReq = NULL;
 
         if (!(pCreateTbReq = taosMemoryCalloc(1, sizeof(SVCreateStbReq)))) {
+          taosMemoryFree(ctbName);
           goto _end;
         };
 
@@ -572,6 +568,8 @@ void tqSinkToTablePipeline2(SStreamTask* pTask, void* vnode, int64_t ver, void*
         // set tag content
         tagArray = taosArrayInit(1, sizeof(STagVal));
         if (!tagArray) {
+          taosMemoryFree(ctbName);
+          tdDestroySVCreateTbReq(pCreateTbReq);
           goto _end;
         }
         STagVal tagVal = {
@@ -587,6 +585,8 @@ void tqSinkToTablePipeline2(SStreamTask* pTask, void* vnode, int64_t ver, void*
         tagArray = taosArrayDestroy(tagArray);
         if (pTag == NULL) {
           terrno = TSDB_CODE_OUT_OF_MEMORY;
+          taosMemoryFree(ctbName);
+          tdDestroySVCreateTbReq(pCreateTbReq);
           goto _end;
         }
         pCreateTbReq->ctb.pTag = (uint8_t*)pTag;
@@ -630,6 +630,7 @@ void tqSinkToTablePipeline2(SStreamTask* pTask, void* vnode, int64_t ver, void*
       // rows
       if (!pVals && !(pVals = taosArrayInit(pTSchema->numOfCols, sizeof(SColVal)))) {
         taosArrayDestroy(tbData.aRowP);
+        tdDestroySVCreateTbReq(tbData.pCreateTbReq);
         goto _end;
       }
 
@@ -680,6 +681,7 @@ void tqSinkToTablePipeline2(SStreamTask* pTask, void* vnode, int64_t ver, void*
 
       SSubmitReq2 submitReq = {0};
       if (!(submitReq.aSubmitTbData = taosArrayInit(1, sizeof(SSubmitTbData)))) {
+        tDestroySSubmitTbData(&tbData, TSDB_MSG_FLG_ENCODE);
         goto _end;
       }
 
@@ -693,6 +695,7 @@ void tqSinkToTablePipeline2(SStreamTask* pTask, void* vnode, int64_t ver, void*
       len += sizeof(SSubmitReq2Msg);
       pBuf = rpcMallocCont(len);
       if (NULL == pBuf) {
+        tDestroySSubmitReq2(&submitReq, TSDB_MSG_FLG_ENCODE);
         goto _end;
       }
       ((SSubmitReq2Msg*)pBuf)->header.vgId = TD_VID(pVnode);
@@ -704,6 +707,7 @@ void tqSinkToTablePipeline2(SStreamTask* pTask, void* vnode, int64_t ver, void*
         tqError("failed to encode submit req since %s", terrstr());
         tEncoderClear(&encoder);
         rpcFreeCont(pBuf);
+        tDestroySSubmitReq2(&submitReq, TSDB_MSG_FLG_ENCODE);
         continue;
       }
       tEncoderClear(&encoder);

source/dnode/vnode/src/tsdb/tsdbCompact.c

@@ -57,32 +57,6 @@ typedef struct {
   SBlockData    sData;
 } STsdbCompactor;
 
-static int32_t tsdbCommitCompact(STsdbCompactor *pCompactor) {
-  int32_t code = 0;
-  int32_t lino = 0;
-
-  STsdb *pTsdb = pCompactor->pTsdb;
-
-  code = tsdbFSPrepareCommit(pTsdb, &pCompactor->fs);
-  TSDB_CHECK_CODE(code, lino, _exit);
-
-  taosThreadRwlockWrlock(&pTsdb->rwLock);
-
-  code = tsdbFSCommit(pTsdb);
-  if (code) {
-    taosThreadRwlockUnlock(&pTsdb->rwLock);
-    TSDB_CHECK_CODE(code, lino, _exit);
-  }
-
-  taosThreadRwlockUnlock(&pTsdb->rwLock);
-
-_exit:
-  if (code) {
-    tsdbError("vgId:%d %s failed at line %d since %s", TD_VID(pTsdb->pVnode), __func__, lino, tstrerror(code));
-  }
-  return code;
-}
-
 static int32_t tsdbAbortCompact(STsdbCompactor *pCompactor) {
   int32_t code = 0;
   int32_t lino = 0;
@@ -660,8 +634,31 @@ _exit:
   if (code) {
     tsdbAbortCompact(pCompactor);
   } else {
-    tsdbCommitCompact(pCompactor);
+    tsdbFSPrepareCommit(pTsdb, &pCompactor->fs);
   }
   tsdbEndCompact(pCompactor);
   return code;
 }
+
+int32_t tsdbCommitCompact(STsdb *pTsdb) {
+  int32_t code = 0;
+  int32_t lino = 0;
+
+  taosThreadRwlockWrlock(&pTsdb->rwLock);
+
+  code = tsdbFSCommit(pTsdb);
+  if (code) {
+    taosThreadRwlockUnlock(&pTsdb->rwLock);
+    TSDB_CHECK_CODE(code, lino, _exit);
+  }
+
+  taosThreadRwlockUnlock(&pTsdb->rwLock);
+
+_exit:
+  if (code) {
+    tsdbError("vgId:%d %s failed at line %d since %s", TD_VID(pTsdb->pVnode), __func__, lino, tstrerror(code));
+  } else {
+    tsdbInfo("vgId:%d %s done", TD_VID(pTsdb->pVnode), __func__);
+  }
+  return code;
+}

source/dnode/vnode/src/tsdb/tsdbRead.c

@@ -916,8 +916,10 @@ static int32_t doLoadFileBlock(STsdbReader* pReader, SArray* pIndexList, SBlockN
       pBlockNum->numOfBlocks += 1;
     }
 
-    if ((pScanInfo->pBlockList != NULL )&& (taosArrayGetSize(pScanInfo->pBlockList) > 0)) {
+    if (pScanInfo->pBlockList != NULL) {
-      numOfQTable += 1;
+      if (taosArrayGetSize(pScanInfo->pBlockList) > 0) {
+        numOfQTable += 1;
+      }
     }
   }
 
@@ -4720,8 +4722,13 @@ int32_t tsdbReaderReset(STsdbReader* pReader, SQueryTableDataCond* pCond) {
   return code;
 }
 
-static int32_t getBucketIndex(int32_t startRow, int32_t bucketRange, int32_t numOfRows) {
+static int32_t getBucketIndex(int32_t startRow, int32_t bucketRange, int32_t numOfRows, int32_t numOfBucket) {
-  return (numOfRows - startRow) / bucketRange;
+  int32_t bucketIndex =  ((numOfRows - startRow) / bucketRange);
+  if (bucketIndex == numOfBucket) {
+    bucketIndex -= 1;
+  }
+
+  return bucketIndex;
 }
 
 int32_t tsdbGetFileBlocksDistInfo(STsdbReader* pReader, STableBlockDistInfo* pTableBlockInfo) {
@@ -4730,6 +4737,8 @@ int32_t tsdbGetFileBlocksDistInfo(STsdbReader* pReader, STableBlockDistInfo* pTa
   pTableBlockInfo->totalRows = 0;
   pTableBlockInfo->numOfVgroups = 1;
 
+  const int32_t numOfBuckets = 20.0;
+
   // find the start data block in file
 
   tsdbAcquireReader(pReader);
@@ -4742,7 +4751,7 @@ int32_t tsdbGetFileBlocksDistInfo(STsdbReader* pReader, STableBlockDistInfo* pTa
   pTableBlockInfo->defMinRows = pc->minRows;
   pTableBlockInfo->defMaxRows = pc->maxRows;
 
-  int32_t bucketRange = ceil((pc->maxRows - pc->minRows) / 20.0);
+  int32_t bucketRange = ceil((pc->maxRows - pc->minRows) / numOfBuckets);
 
   pTableBlockInfo->numOfFiles += 1;
 
@@ -4780,7 +4789,7 @@ int32_t tsdbGetFileBlocksDistInfo(STsdbReader* pReader, STableBlockDistInfo* pTa
 
       pTableBlockInfo->totalSize += pBlock->aSubBlock[0].szBlock;
 
-      int32_t bucketIndex = getBucketIndex(pTableBlockInfo->defMinRows, bucketRange, numOfRows);
+      int32_t bucketIndex = getBucketIndex(pTableBlockInfo->defMinRows, bucketRange, numOfRows, numOfBuckets);
       pTableBlockInfo->blockRowsHisto[bucketIndex]++;
 
       hasNext = blockIteratorNext(&pStatus->blockIter, pReader->idStr);

source/dnode/vnode/src/tsdb/tsdbRetention.c

@@ -15,7 +15,7 @@
 
 #include "tsdb.h"
 
-static bool tsdbShouldDoRetention(STsdb *pTsdb, int64_t now) {
+static bool tsdbShouldDoRetentionImpl(STsdb *pTsdb, int64_t now) {
   for (int32_t iSet = 0; iSet < taosArrayGetSize(pTsdb->fs.aDFileSet); iSet++) {
     SDFileSet *pSet = (SDFileSet *)taosArrayGet(pTsdb->fs.aDFileSet, iSet);
     int32_t    expLevel = tsdbFidLevel(pSet->fid, &pTsdb->keepCfg, now);
@@ -38,19 +38,21 @@ static bool tsdbShouldDoRetention(STsdb *pTsdb, int64_t now) {
 
   return false;
 }
+bool tsdbShouldDoRetention(STsdb *pTsdb, int64_t now) {
+  bool should;
+  taosThreadRwlockRdlock(&pTsdb->rwLock);
+  should = tsdbShouldDoRetentionImpl(pTsdb, now);
+  taosThreadRwlockUnlock(&pTsdb->rwLock);
+  return should;
+}
 
 int32_t tsdbDoRetention(STsdb *pTsdb, int64_t now) {
   int32_t code = 0;
-
+  int32_t lino = 0;
-  if (!tsdbShouldDoRetention(pTsdb, now)) {
-    return code;
-  }
-
-  // do retention
   STsdbFS fs = {0};
 
   code = tsdbFSCopy(pTsdb, &fs);
-  if (code) goto _err;
+  TSDB_CHECK_CODE(code, lino, _exit);
 
   for (int32_t iSet = 0; iSet < taosArrayGetSize(fs.aDFileSet); iSet++) {
     SDFileSet *pSet = (SDFileSet *)taosArrayGet(fs.aDFileSet, iSet);
@@ -60,8 +62,10 @@ int32_t tsdbDoRetention(STsdb *pTsdb, int64_t now) {
     if (expLevel < 0) {
       taosMemoryFree(pSet->pHeadF);
       taosMemoryFree(pSet->pDataF);
-      taosMemoryFree(pSet->aSttF[0]);
       taosMemoryFree(pSet->pSmaF);
+      for (int32_t iStt = 0; iStt < pSet->nSttF; iStt++) {
+        taosMemoryFree(pSet->aSttF[iStt]);
+      }
       taosArrayRemove(fs.aDFileSet, iSet);
       iSet--;
     } else {
@@ -78,35 +82,33 @@ int32_t tsdbDoRetention(STsdb *pTsdb, int64_t now) {
       fSet.diskId = did;
 
       code = tsdbDFileSetCopy(pTsdb, pSet, &fSet);
-      if (code) goto _err;
+      TSDB_CHECK_CODE(code, lino, _exit);
 
       code = tsdbFSUpsertFSet(&fs, &fSet);
-      if (code) goto _err;
+      TSDB_CHECK_CODE(code, lino, _exit);
     }
   }
 
   // do change fs
   code = tsdbFSPrepareCommit(pTsdb, &fs);
-  if (code) goto _err;
+  TSDB_CHECK_CODE(code, lino, _exit);
-
-  taosThreadRwlockWrlock(&pTsdb->rwLock);
-
-  code = tsdbFSCommit(pTsdb);
-  if (code) {
-    taosThreadRwlockUnlock(&pTsdb->rwLock);
-    goto _err;
-  }
-
-  taosThreadRwlockUnlock(&pTsdb->rwLock);
-
-  tsdbFSDestroy(&fs);
 
 _exit:
+  if (code) {
+    tsdbError("vgId:%d %s failed at line %d since %s", TD_VID(pTsdb->pVnode), __func__, lino, tstrerror(code));
+  } else {
+    tsdbInfo("vgId:%d %s done", TD_VID(pTsdb->pVnode), __func__);
+  }
+  tsdbFSDestroy(&fs);
   return code;
+}
 
-_err:
+static int32_t tsdbCommitRetentionImpl(STsdb *pTsdb) { return tsdbFSCommit(pTsdb); }
-  tsdbError("vgId:%d, tsdb do retention failed since %s", TD_VID(pTsdb->pVnode), tstrerror(code));
+
-  ASSERT(0);
+int32_t tsdbCommitRetention(STsdb *pTsdb) {
-  // tsdbFSRollback(pTsdb->pFS);
+  taosThreadRwlockWrlock(&pTsdb->rwLock);
-  return code;
+  tsdbCommitRetentionImpl(pTsdb);
+  taosThreadRwlockUnlock(&pTsdb->rwLock);
+  tsdbInfo("vgId:%d %s done", TD_VID(pTsdb->pVnode), __func__);
+  return 0;
 }

source/dnode/vnode/src/tsdb/tsdbWrite.c

@@ -35,9 +35,7 @@ int tsdbInsertData(STsdb *pTsdb, int64_t version, SSubmitReq2 *pMsg, SSubmitRsp2
     return -1;
   }
 
-  if (pMsg) {
+  arrSize = taosArrayGetSize(pMsg->aSubmitTbData);
-    arrSize = taosArrayGetSize(pMsg->aSubmitTbData);
-  }
 
   // scan and convert
   if (tsdbScanAndConvertSubmitMsg(pTsdb, pMsg) < 0) {

source/dnode/vnode/src/vnd/vnodeCompact.c

@@ -15,6 +15,8 @@
 
 #include "vnd.h"
 
+extern int32_t tsdbCommitCompact(STsdb *pTsdb);
+
 static int32_t vnodeCompactTask(void *param) {
   int32_t code = 0;
   int32_t lino = 0;
@@ -33,8 +35,11 @@ static int32_t vnodeCompactTask(void *param) {
   } else {
     snprintf(dir, TSDB_FILENAME_LEN, "%s", pVnode->path);
   }
+
   vnodeCommitInfo(dir);
 
+  tsdbCommitCompact(pVnode->pTsdb);
+
 _exit:
   tsem_post(&pInfo->pVnode->canCommit);
   taosMemoryFree(pInfo);

source/dnode/vnode/src/vnd/vnodeRetention.c

@@ -0,0 +1,130 @@
+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "vnd.h"
+
+typedef struct {
+  SVnode    *pVnode;
+  int64_t    now;
+  int64_t    commitID;
+  SVnodeInfo info;
+} SRetentionInfo;
+
+extern bool    tsdbShouldDoRetention(STsdb *pTsdb, int64_t now);
+extern int32_t tsdbDoRetention(STsdb *pTsdb, int64_t now);
+extern int32_t tsdbCommitRetention(STsdb *pTsdb);
+
+static int32_t vnodePrepareRentention(SVnode *pVnode, SRetentionInfo *pInfo) {
+  int32_t code = 0;
+  int32_t lino = 0;
+
+  tsem_wait(&pVnode->canCommit);
+
+  pInfo->commitID = ++pVnode->state.commitID;
+
+  char dir[TSDB_FILENAME_LEN] = {0};
+  if (pVnode->pTfs) {
+    snprintf(dir, TSDB_FILENAME_LEN, "%s%s%s", tfsGetPrimaryPath(pVnode->pTfs), TD_DIRSEP, pVnode->path);
+  } else {
+    snprintf(dir, TSDB_FILENAME_LEN, "%s", pVnode->path);
+  }
+
+  if (vnodeLoadInfo(dir, &pInfo->info) < 0) {
+    code = terrno;
+    TSDB_CHECK_CODE(code, lino, _exit);
+  }
+
+_exit:
+  if (code) {
+    vError("vgId:%d %s failed at line %d since %s", TD_VID(pVnode), __func__, lino, tstrerror(code));
+    tsem_post(&pVnode->canCommit);
+  } else {
+    vInfo("vgId:%d %s done", TD_VID(pVnode), __func__);
+  }
+  return code;
+}
+
+static int32_t vnodeRetentionTask(void *param) {
+  int32_t code = 0;
+  int32_t lino = 0;
+
+  SRetentionInfo *pInfo = (SRetentionInfo *)param;
+  SVnode         *pVnode = pInfo->pVnode;
+  char            dir[TSDB_FILENAME_LEN] = {0};
+
+  if (pVnode->pTfs) {
+    snprintf(dir, TSDB_FILENAME_LEN, "%s%s%s", tfsGetPrimaryPath(pVnode->pTfs), TD_DIRSEP, pVnode->path);
+  } else {
+    snprintf(dir, TSDB_FILENAME_LEN, "%s", pVnode->path);
+  }
+
+  // save info
+  pInfo->info.state.commitID = pInfo->commitID;
+
+  if (vnodeSaveInfo(dir, &pInfo->info) < 0) {
+    code = terrno;
+    TSDB_CHECK_CODE(code, lino, _exit);
+  }
+
+  // do job
+  code = tsdbDoRetention(pInfo->pVnode->pTsdb, pInfo->now);
+  TSDB_CHECK_CODE(code, lino, _exit);
+
+  // commit info
+  vnodeCommitInfo(dir);
+
+  // commit sub-job
+  tsdbCommitRetention(pVnode->pTsdb);
+
+_exit:
+  if (code) {
+    vError("vgId:%d %s failed at line %d since %s", TD_VID(pInfo->pVnode), __func__, lino, tstrerror(code));
+  } else {
+    vInfo("vgId:%d %s done", TD_VID(pInfo->pVnode), __func__);
+  }
+  tsem_post(&pInfo->pVnode->canCommit);
+  taosMemoryFree(pInfo);
+  return code;
+}
+
+int32_t vnodeAsyncRentention(SVnode *pVnode, int64_t now) {
+  int32_t code = 0;
+  int32_t lino = 0;
+
+  if (!tsdbShouldDoRetention(pVnode->pTsdb, now)) return code;
+
+  SRetentionInfo *pInfo = (SRetentionInfo *)taosMemoryCalloc(1, sizeof(*pInfo));
+  if (pInfo == NULL) {
+    code = TSDB_CODE_OUT_OF_MEMORY;
+    TSDB_CHECK_CODE(code, lino, _exit);
+  }
+
+  pInfo->pVnode = pVnode;
+  pInfo->now = now;
+
+  code = vnodePrepareRentention(pVnode, pInfo);
+  TSDB_CHECK_CODE(code, lino, _exit);
+
+  vnodeScheduleTask(vnodeRetentionTask, pInfo);
+
+_exit:
+  if (code) {
+    vError("vgId:%d %s failed at line %d since %s", TD_VID(pInfo->pVnode), __func__, lino, tstrerror(code));
+    if (pInfo) taosMemoryFree(pInfo);
+  } else {
+    vInfo("vgId:%d %s done", TD_VID(pInfo->pVnode), __func__);
+  }
+  return 0;
+}

source/dnode/vnode/src/vnd/vnodeSvr.c

@@ -586,6 +586,7 @@ void vnodeUpdateMetaRsp(SVnode *pVnode, STableMetaRsp *pMetaRsp) {
   pMetaRsp->precision = pVnode->config.tsdbCfg.precision;
 }
 
+extern int32_t vnodeAsyncRentention(SVnode *pVnode, int64_t now);
 static int32_t vnodeProcessTrimReq(SVnode *pVnode, int64_t version, void *pReq, int32_t len, SRpcMsg *pRsp) {
   int32_t     code = 0;
   SVTrimDbReq trimReq = {0};
@@ -598,12 +599,16 @@ static int32_t vnodeProcessTrimReq(SVnode *pVnode, int64_t version, void *pReq,
 
   vInfo("vgId:%d, trim vnode request will be processed, time:%d", pVnode->config.vgId, trimReq.timestamp);
 
-  // process
+// process
+#if 0
   code = tsdbDoRetention(pVnode->pTsdb, trimReq.timestamp);
   if (code) goto _exit;
 
   code = smaDoRetention(pVnode->pSma, trimReq.timestamp);
   if (code) goto _exit;
+#else
+  vnodeAsyncRentention(pVnode, trimReq.timestamp);
+#endif
 
 _exit:
   return code;
@@ -635,6 +640,10 @@ static int32_t vnodeProcessDropTtlTbReq(SVnode *pVnode, int64_t version, void *p
 
   ret = smaDoRetention(pVnode->pSma, ttlReq.timestamp);
   if (ret) goto end;
+#else
+  vnodeAsyncRentention(pVnode, ttlReq.timestamp);
+  tsem_wait(&pVnode->canCommit);
+  tsem_post(&pVnode->canCommit);
 #endif
 
 end:
@@ -1264,8 +1273,8 @@ static int32_t vnodeProcessSubmitReq(SVnode *pVnode, int64_t version, void *pReq
         goto _exit;
       }
 
-      for (int32_t i = 1; i < nColData; i++) {
+      for (int32_t j = 1; j < nColData; j++) {
-        if (aColData[i].nVal != aColData[0].nVal) {
+        if (aColData[j].nVal != aColData[0].nVal) {
           code = TSDB_CODE_INVALID_MSG;
           goto _exit;
         }
@@ -1299,8 +1308,8 @@ static int32_t vnodeProcessSubmitReq(SVnode *pVnode, int64_t version, void *pReq
       SVCreateTbRsp *pCreateTbRsp = taosArrayReserve(pSubmitRsp->aCreateTbRsp, 1);
 
       // create table
-      if (metaCreateTable(pVnode->pMeta, version, pSubmitTbData->pCreateTbReq, &pCreateTbRsp->pMeta) ==
+      if (metaCreateTable(pVnode->pMeta, version, pSubmitTbData->pCreateTbReq, &pCreateTbRsp->pMeta) == 0) {
-          0) {  // create table success
+        // create table success
 
         if (newTbUids == NULL &&
             (newTbUids = taosArrayInit(TARRAY_SIZE(pSubmitReq->aSubmitTbData), sizeof(int64_t))) == NULL) {
@@ -1330,7 +1339,7 @@ static int32_t vnodeProcessSubmitReq(SVnode *pVnode, int64_t version, void *pReq
     pSubmitRsp->affectedRows += affectedRows;
   }
 
-  // update table uid list
+  // update the affected table uid list
   if (taosArrayGetSize(newTbUids) > 0) {
     vDebug("vgId:%d, add %d table into query table list in handling submit", TD_VID(pVnode),
            (int32_t)taosArrayGetSize(newTbUids));

source/libs/executor/inc/executorimpl.h

@@ -133,8 +133,7 @@ typedef struct {
   int64_t      snapshotVer;
   // const SSubmitReq* pReq;
 
-  SPackedData submit;
+  SPackedData         submit;
-
   SSchemaWrapper*     schema;
   char                tbName[TSDB_TABLE_NAME_LEN];
   int8_t              recoverStep;
@@ -733,7 +732,7 @@ void    updateLoadRemoteInfo(SLoadRemoteDataInfo* pInfo, int64_t numOfRows, int3
 
 STimeWindow getFirstQualifiedTimeWindow(int64_t ts, STimeWindow* pWindow, SInterval* pInterval, int32_t order);
 
-int32_t getTableScanInfo(SOperatorInfo* pOperator, int32_t* order, int32_t* scanFlag);
+int32_t getTableScanInfo(SOperatorInfo* pOperator, int32_t* order, int32_t* scanFlag, bool inheritUsOrder);
 int32_t getBufferPgSize(int32_t rowSize, uint32_t* defaultPgsz, uint32_t* defaultBufsz);
 
 extern void doDestroyExchangeOperatorInfo(void* param);

source/libs/executor/src/dataSinkMgt.c

@@ -37,10 +37,12 @@ int32_t dsCreateDataSinker(const SDataSinkNode* pDataSink, DataSinkHandle* pHand
   switch ((int)nodeType(pDataSink)) {
     case QUERY_NODE_PHYSICAL_PLAN_DISPATCH:
       return createDataDispatcher(&gDataSinkManager, pDataSink, pHandle);
-    case QUERY_NODE_PHYSICAL_PLAN_DELETE:
+    case QUERY_NODE_PHYSICAL_PLAN_DELETE: {
       return createDataDeleter(&gDataSinkManager, pDataSink, pHandle, pParam);
-    case QUERY_NODE_PHYSICAL_PLAN_QUERY_INSERT:
+    }
+    case QUERY_NODE_PHYSICAL_PLAN_QUERY_INSERT: {
       return createDataInserter(&gDataSinkManager, pDataSink, pHandle, pParam);
+    }
   }
 
   qError("invalid input node type:%d, %s", nodeType(pDataSink), id);

source/libs/executor/src/executil.c

@@ -850,32 +850,32 @@ static SSDataBlock* createTagValBlockForFilter(SArray* pColList, int32_t numOfTa
         tagVal.cid = pColInfo->info.colId;
         if (p1->pTagVal == NULL) {
           colDataSetNULL(pColInfo, i);
-        }
-
-        const char* p = metaGetTableTagVal(p1->pTagVal, pColInfo->info.type, &tagVal);
-
-        if (p == NULL || (pColInfo->info.type == TSDB_DATA_TYPE_JSON && ((STag*)p)->nTag == 0)) {
-          colDataSetNULL(pColInfo, i);
-        } else if (pColInfo->info.type == TSDB_DATA_TYPE_JSON) {
-          colDataSetVal(pColInfo, i, p, false);
-        } else if (IS_VAR_DATA_TYPE(pColInfo->info.type)) {
-          char* tmp = taosMemoryMalloc(tagVal.nData + VARSTR_HEADER_SIZE + 1);
-          varDataSetLen(tmp, tagVal.nData);
-          memcpy(tmp + VARSTR_HEADER_SIZE, tagVal.pData, tagVal.nData);
-          colDataSetVal(pColInfo, i, tmp, false);
-#if TAG_FILTER_DEBUG
-          qDebug("tagfilter varch:%s", tmp + 2);
-#endif
-          taosMemoryFree(tmp);
         } else {
-          colDataSetVal(pColInfo, i, (const char*)&tagVal.i64, false);
+          const char* p = metaGetTableTagVal(p1->pTagVal, pColInfo->info.type, &tagVal);
+
+          if (p == NULL || (pColInfo->info.type == TSDB_DATA_TYPE_JSON && ((STag*)p)->nTag == 0)) {
+            colDataSetNULL(pColInfo, i);
+          } else if (pColInfo->info.type == TSDB_DATA_TYPE_JSON) {
+            colDataSetVal(pColInfo, i, p, false);
+          } else if (IS_VAR_DATA_TYPE(pColInfo->info.type)) {
+            char* tmp = taosMemoryMalloc(tagVal.nData + VARSTR_HEADER_SIZE + 1);
+            varDataSetLen(tmp, tagVal.nData);
+            memcpy(tmp + VARSTR_HEADER_SIZE, tagVal.pData, tagVal.nData);
+            colDataSetVal(pColInfo, i, tmp, false);
 #if TAG_FILTER_DEBUG
-          if (pColInfo->info.type == TSDB_DATA_TYPE_INT) {
+            qDebug("tagfilter varch:%s", tmp + 2);
-            qDebug("tagfilter int:%d", *(int*)(&tagVal.i64));
-          } else if (pColInfo->info.type == TSDB_DATA_TYPE_DOUBLE) {
-            qDebug("tagfilter double:%f", *(double*)(&tagVal.i64));
-          }
 #endif
+            taosMemoryFree(tmp);
+          } else {
+            colDataSetVal(pColInfo, i, (const char*)&tagVal.i64, false);
+#if TAG_FILTER_DEBUG
+            if (pColInfo->info.type == TSDB_DATA_TYPE_INT) {
+              qDebug("tagfilter int:%d", *(int*)(&tagVal.i64));
+            } else if (pColInfo->info.type == TSDB_DATA_TYPE_DOUBLE) {
+              qDebug("tagfilter double:%f", *(double*)(&tagVal.i64));
+            }
+#endif
+          }
         }
       }
     }

source/libs/executor/src/executor.c

@@ -1035,8 +1035,9 @@ int32_t qStreamScanMemData(qTaskInfo_t tinfo, const SSubmitReq* pReq, int64_t sc
 
 int32_t qStreamSetScanMemData(qTaskInfo_t tinfo, SPackedData submit) {
   SExecTaskInfo* pTaskInfo = (SExecTaskInfo*)tinfo;
-  ASSERT(pTaskInfo->execModel == OPTR_EXEC_MODEL_QUEUE);
+  ASSERT((pTaskInfo->execModel == OPTR_EXEC_MODEL_QUEUE )&& (pTaskInfo->streamInfo.submit.msgStr == NULL));
-  ASSERT(pTaskInfo->streamInfo.submit.msgStr == NULL);
+  qDebug("set the submit block for future scan");
+
   pTaskInfo->streamInfo.submit = submit;
   return 0;
 }
@@ -1047,14 +1048,16 @@ int32_t qStreamPrepareScan(qTaskInfo_t tinfo, STqOffsetVal* pOffset, int8_t subT
   ASSERT(pTaskInfo->execModel == OPTR_EXEC_MODEL_QUEUE);
   pTaskInfo->streamInfo.prepareStatus = *pOffset;
   pTaskInfo->streamInfo.returned = 0;
+
   if (tOffsetEqual(pOffset, &pTaskInfo->streamInfo.lastStatus)) {
     return 0;
   }
+
   if (subType == TOPIC_SUB_TYPE__COLUMN) {
-    uint16_t type = pOperator->operatorType;
     pOperator->status = OP_OPENED;
+
     // TODO add more check
-    if (type != QUERY_NODE_PHYSICAL_PLAN_STREAM_SCAN) {
+    if (pOperator->operatorType != QUERY_NODE_PHYSICAL_PLAN_STREAM_SCAN) {
       ASSERT(pOperator->numOfDownstream == 1);
       pOperator = pOperator->pDownstream[0];
     }
@@ -1064,11 +1067,13 @@ int32_t qStreamPrepareScan(qTaskInfo_t tinfo, STqOffsetVal* pOffset, int8_t subT
       STableScanInfo* pTSInfo = pInfo->pTableScanOp->info;
       tsdbReaderClose(pTSInfo->base.dataReader);
       pTSInfo->base.dataReader = NULL;
+      // let's seek to the next version in wal file
       if (tqSeekVer(pInfo->tqReader, pOffset->version + 1) < 0) {
         return -1;
       }
     } else if (pOffset->type == TMQ_OFFSET__SNAPSHOT_DATA) {
-      /*pInfo->blockType = STREAM_INPUT__TABLE_SCAN;*/
+      // iterate all tables from tableInfoList, and retrieve rows from each table one-by-one
+      // those data are from the snapshot in tsdb, besides the data in the wal file.
       int64_t uid = pOffset->uid;
       int64_t ts = pOffset->ts;
 
@@ -1127,7 +1132,6 @@ int32_t qStreamPrepareScan(qTaskInfo_t tinfo, STqOffsetVal* pOffset, int8_t subT
 
       qDebug("tsdb reader offset seek to uid %" PRId64 " ts %" PRId64 ", table cur set to %d , all table num %d", uid,
              ts, pTableScanInfo->currentTable, numOfTables);
-      /*}*/
     } else {
       ASSERT(0);
     }
@@ -1170,7 +1174,7 @@ int32_t qStreamPrepareScan(qTaskInfo_t tinfo, STqOffsetVal* pOffset, int8_t subT
     tDeleteSSchemaWrapper(pTaskInfo->streamInfo.schema);
     pTaskInfo->streamInfo.schema = mtInfo.schema;
 
-    qDebug("tmqsnap qStreamPrepareScan snapshot data uid %" PRId64 " ts %" PRId64, mtInfo.uid, pOffset->ts);
+    qDebug("tmqsnap qStreamPrepareScan snapshot data uid:%" PRId64 " ts %" PRId64, mtInfo.uid, pOffset->ts);
   } else if (pOffset->type == TMQ_OFFSET__SNAPSHOT_META) {
     SStreamRawScanInfo* pInfo = pOperator->info;
     SSnapContext*       sContext = pInfo->sContext;
@@ -1178,7 +1182,7 @@ int32_t qStreamPrepareScan(qTaskInfo_t tinfo, STqOffsetVal* pOffset, int8_t subT
       qError("setForSnapShot error. uid:%" PRIu64 " ,version:%" PRId64, pOffset->uid, pOffset->version);
       return -1;
     }
-    qDebug("tmqsnap qStreamPrepareScan snapshot meta uid %" PRId64 " ts %" PRId64, pOffset->uid, pOffset->ts);
+    qDebug("tmqsnap qStreamPrepareScan snapshot meta uid:%" PRId64 " ts %" PRId64, pOffset->uid, pOffset->ts);
   } else if (pOffset->type == TMQ_OFFSET__LOG) {
     SStreamRawScanInfo* pInfo = pOperator->info;
     tsdbReaderClose(pInfo->dataReader);

source/libs/executor/src/executorimpl.c

@@ -1449,16 +1449,21 @@ int32_t appendDownstream(SOperatorInfo* p, SOperatorInfo** pDownstream, int32_t
   return TSDB_CODE_SUCCESS;
 }
 
-int32_t getTableScanInfo(SOperatorInfo* pOperator, int32_t* order, int32_t* scanFlag) {
+int32_t getTableScanInfo(SOperatorInfo* pOperator, int32_t* order, int32_t* scanFlag, bool inheritUsOrder) {
   // todo add more information about exchange operation
   int32_t type = pOperator->operatorType;
-  if (type == QUERY_NODE_PHYSICAL_PLAN_EXCHANGE || type == QUERY_NODE_PHYSICAL_PLAN_SYSTABLE_SCAN ||
+  if (type == QUERY_NODE_PHYSICAL_PLAN_SYSTABLE_SCAN || type == QUERY_NODE_PHYSICAL_PLAN_STREAM_SCAN ||
-      type == QUERY_NODE_PHYSICAL_PLAN_STREAM_SCAN || type == QUERY_NODE_PHYSICAL_PLAN_TAG_SCAN ||
+      type == QUERY_NODE_PHYSICAL_PLAN_TAG_SCAN || type == QUERY_NODE_PHYSICAL_PLAN_BLOCK_DIST_SCAN ||
-      type == QUERY_NODE_PHYSICAL_PLAN_BLOCK_DIST_SCAN || type == QUERY_NODE_PHYSICAL_PLAN_LAST_ROW_SCAN ||
+      type == QUERY_NODE_PHYSICAL_PLAN_LAST_ROW_SCAN || type == QUERY_NODE_PHYSICAL_PLAN_TABLE_COUNT_SCAN) {
-      type == QUERY_NODE_PHYSICAL_PLAN_TABLE_COUNT_SCAN) {
     *order = TSDB_ORDER_ASC;
     *scanFlag = MAIN_SCAN;
     return TSDB_CODE_SUCCESS;
+  } else if (type == QUERY_NODE_PHYSICAL_PLAN_EXCHANGE) {
+    if (!inheritUsOrder) {
+      *order = TSDB_ORDER_ASC;
+    }
+    *scanFlag = MAIN_SCAN;
+    return TSDB_CODE_SUCCESS;
   } else if (type == QUERY_NODE_PHYSICAL_PLAN_TABLE_SCAN) {
     STableScanInfo* pTableScanInfo = pOperator->info;
     *order = pTableScanInfo->base.cond.order;
@@ -1473,7 +1478,7 @@ int32_t getTableScanInfo(SOperatorInfo* pOperator, int32_t* order, int32_t* scan
     if (pOperator->pDownstream == NULL || pOperator->pDownstream[0] == NULL) {
       return TSDB_CODE_INVALID_PARA;
     } else {
-      return getTableScanInfo(pOperator->pDownstream[0], order, scanFlag);
+      return getTableScanInfo(pOperator->pDownstream[0], order, scanFlag, inheritUsOrder);
     }
   }
 }
@@ -1589,7 +1594,7 @@ static int32_t doOpenAggregateOptr(SOperatorInfo* pOperator) {
     }
     hasValidBlock = true;
 
-    int32_t code = getTableScanInfo(pOperator, &order, &scanFlag);
+    int32_t code = getTableScanInfo(pOperator, &order, &scanFlag, false);
     if (code != TSDB_CODE_SUCCESS) {
       destroyDataBlockForEmptyInput(blockAllocated, &pBlock);
       T_LONG_JMP(pTaskInfo->env, code);
@@ -1996,6 +2001,11 @@ SSchemaWrapper* extractQueriedColumnSchema(SScanPhysiNode* pScanNode);
 
 int32_t extractTableSchemaInfo(SReadHandle* pHandle, SScanPhysiNode* pScanNode, SExecTaskInfo* pTaskInfo) {
   SMetaReader mr = {0};
+  if (pHandle == NULL) {
+    terrno = TSDB_CODE_INVALID_PARA;
+    return terrno;
+  }
+
   metaReaderInit(&mr, pHandle->meta, 0);
   int32_t code = metaGetTableEntryByUidCache(&mr, pScanNode->uid);
   if (code != TSDB_CODE_SUCCESS) {

source/libs/executor/src/filloperator.c

@@ -69,7 +69,7 @@ static void doHandleRemainBlockForNewGroupImpl(SOperatorInfo* pOperator, SFillOp
 
   int32_t order = TSDB_ORDER_ASC;
   int32_t scanFlag = MAIN_SCAN;
-  getTableScanInfo(pOperator, &order, &scanFlag);
+  getTableScanInfo(pOperator, &order, &scanFlag, false);
 
   int64_t ekey = pInfo->existNewGroupBlock->info.window.ekey;
   taosResetFillInfo(pInfo->pFillInfo, getFillInfoStart(pInfo->pFillInfo));
@@ -128,7 +128,7 @@ static SSDataBlock* doFillImpl(SOperatorInfo* pOperator) {
 
   int32_t order = TSDB_ORDER_ASC;
   int32_t scanFlag = MAIN_SCAN;
-  getTableScanInfo(pOperator, &order, &scanFlag);
+  getTableScanInfo(pOperator, &order, &scanFlag, false);
 
   doHandleRemainBlockFromNewGroup(pOperator, pInfo, pResultInfo, pTaskInfo);
   if (pResBlock->info.rows > 0) {

source/libs/executor/src/groupoperator.c

@@ -383,7 +383,7 @@ static SSDataBlock* hashGroupbyAggregate(SOperatorInfo* pOperator) {
       break;
     }
 
-    int32_t code = getTableScanInfo(pOperator, &order, &scanFlag);
+    int32_t code = getTableScanInfo(pOperator, &order, &scanFlag, false);
     if (code != TSDB_CODE_SUCCESS) {
       T_LONG_JMP(pTaskInfo->env, code);
     }

source/libs/executor/src/projectoperator.c

@@ -289,7 +289,7 @@ SSDataBlock* doProjectOperation(SOperatorInfo* pOperator) {
       }
 
       // the pDataBlock are always the same one, no need to call this again
-      int32_t code = getTableScanInfo(downstream, &order, &scanFlag);
+      int32_t code = getTableScanInfo(downstream, &order, &scanFlag, false);
       if (code != TSDB_CODE_SUCCESS) {
         T_LONG_JMP(pTaskInfo->env, code);
       }
@@ -441,7 +441,7 @@ static void doHandleDataBlock(SOperatorInfo* pOperator, SSDataBlock* pBlock, SOp
   SExprSupp*          pSup = &pOperator->exprSupp;
 
   // the pDataBlock are always the same one, no need to call this again
-  int32_t code = getTableScanInfo(downstream, &order, &scanFlag);
+  int32_t code = getTableScanInfo(downstream, &order, &scanFlag, false);
   if (code != TSDB_CODE_SUCCESS) {
     T_LONG_JMP(pTaskInfo->env, code);
   }

source/libs/executor/src/scanoperator.c

@@ -1562,7 +1562,7 @@ static SSDataBlock* doQueueScan(SOperatorInfo* pOperator) {
   SExecTaskInfo*   pTaskInfo = pOperator->pTaskInfo;
   SStreamScanInfo* pInfo = pOperator->info;
 
-  qDebug("queue scan called");
+  qDebug("start to exec queue scan");
 
   if (pTaskInfo->streamInfo.submit.msgStr != NULL) {
     if (pInfo->tqReader->msg2.msgStr == NULL) {
@@ -1587,7 +1587,6 @@ static SSDataBlock* doQueueScan(SOperatorInfo* pOperator) {
       SSDataBlock block = {0};
 
       int32_t code = tqRetrieveDataBlock2(&block, pInfo->tqReader, NULL);
-
       if (code != TSDB_CODE_SUCCESS || block.info.rows == 0) {
         continue;
       }

source/libs/executor/src/sortoperator.c

@@ -672,7 +672,9 @@ SSDataBlock* getMultiwaySortedBlockData(SSortHandle* pHandle, SSDataBlock* pData
     }
 
     bool limitReached = applyLimitOffset(&pInfo->limitInfo, p, pTaskInfo);
-    if (limitReached) {
+    // if limit is reached within a group, do not clear limiInfo otherwise the next block
+    // will be processed.
+    if (newgroup && limitReached) {
       resetLimitInfoForNextGroup(&pInfo->limitInfo);
     }
 

source/libs/executor/src/timewindowoperator.c

@@ -1072,7 +1072,7 @@ static int32_t doOpenIntervalAgg(SOperatorInfo* pOperator) {
       break;
     }
 
-    getTableScanInfo(pOperator, &pInfo->inputOrder, &scanFlag);
+    getTableScanInfo(pOperator, &pInfo->inputOrder, &scanFlag, true);
 
     if (pInfo->scalarSupp.pExprInfo != NULL) {
       SExprSupp* pExprSup = &pInfo->scalarSupp;
@@ -4294,7 +4294,7 @@ static void doMergeAlignedIntervalAgg(SOperatorInfo* pOperator) {
       }
     }
 
-    getTableScanInfo(pOperator, &pIaInfo->inputOrder, &scanFlag);
+    getTableScanInfo(pOperator, &pIaInfo->inputOrder, &scanFlag, false);
     setInputDataBlock(pSup, pBlock, pIaInfo->inputOrder, scanFlag, true);
     doMergeAlignedIntervalAggImpl(pOperator, &pIaInfo->binfo.resultRowInfo, pBlock, pRes);
 
@@ -4621,7 +4621,7 @@ static SSDataBlock* doMergeIntervalAgg(SOperatorInfo* pOperator) {
         break;
       }
 
-      getTableScanInfo(pOperator, &iaInfo->inputOrder, &scanFlag);
+      getTableScanInfo(pOperator, &iaInfo->inputOrder, &scanFlag, false);
       setInputDataBlock(pExpSupp, pBlock, iaInfo->inputOrder, scanFlag, true);
       doMergeIntervalAggImpl(pOperator, &iaInfo->binfo.resultRowInfo, pBlock, scanFlag, pRes);
 

source/libs/function/src/builtinsimpl.c

@@ -5579,7 +5579,7 @@ int32_t blockDistFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
   int32_t bucketRange = (pData->defMaxRows - pData->defMinRows) / numOfBuckets;
 
   for (int32_t i = 0; i < tListLen(pData->blockRowsHisto); ++i) {
-    len = sprintf(st + VARSTR_HEADER_SIZE, "%04d |", pData->defMinRows + bucketRange * i);
+    len = sprintf(st + VARSTR_HEADER_SIZE, "%04d |", pData->defMinRows + bucketRange * (i + 1));
 
     int32_t num = 0;
     if (pData->blockRowsHisto[i] > 0) {

source/libs/function/src/udfd.c

@@ -946,6 +946,12 @@ int32_t udfdOpenClientRpc() {
   rpcInit.rfp = udfdRpcRfp;
   rpcInit.compressSize = tsCompressMsgSize;
 
+  int32_t connLimitNum = tsNumOfRpcSessions / (tsNumOfRpcThreads * 3);
+  connLimitNum = TMAX(connLimitNum, 10);
+  connLimitNum = TMIN(connLimitNum, 500);
+  rpcInit.connLimitNum = connLimitNum;
+  rpcInit.timeToGetConn = tsTimeToGetAvailableConn;
+
   global.clientRpc = rpcOpen(&rpcInit);
   if (global.clientRpc == NULL) {
     fnError("failed to init dnode rpc client");

source/libs/nodes/src/nodesCloneFuncs.c

@@ -35,15 +35,15 @@
     memcpy(&((pDst)->fldname), &((pSrc)->fldname), size); \
   } while (0)
 
-#define COPY_CHAR_POINT_FIELD(fldname)         \
+#define COPY_CHAR_POINT_FIELD(fldname)             \
-  do {                                         \
+  do {                                             \
-    if (NULL == (pSrc)->fldname) {             \
+    if (NULL == (pSrc)->fldname) {                 \
-      break;                                   \
+      break;                                       \
-    }                                          \
+    }                                              \
     (pDst)->fldname = taosStrdup((pSrc)->fldname); \
-    if (NULL == (pDst)->fldname) {             \
+    if (NULL == (pDst)->fldname) {                 \
-      return TSDB_CODE_OUT_OF_MEMORY;          \
+      return TSDB_CODE_OUT_OF_MEMORY;              \
-    }                                          \
+    }                                              \
   } while (0)
 
 #define CLONE_NODE_FIELD(fldname)                      \
@@ -158,7 +158,7 @@ static int32_t valueNodeCopy(const SValueNode* pSrc, SValueNode* pDst) {
     case TSDB_DATA_TYPE_NCHAR:
     case TSDB_DATA_TYPE_VARCHAR:
     case TSDB_DATA_TYPE_VARBINARY: {
-      int32_t len = varDataTLen(pSrc->datum.p) + 1;
+      int32_t len = pSrc->node.resType.bytes + 1;
       pDst->datum.p = taosMemoryCalloc(1, len);
       if (NULL == pDst->datum.p) {
         return TSDB_CODE_OUT_OF_MEMORY;

source/libs/nodes/src/nodesCodeFuncs.c

@@ -3269,7 +3269,7 @@ static int32_t jsonToDatum(const SJson* pJson, void* pObj) {
     case TSDB_DATA_TYPE_NCHAR:
     case TSDB_DATA_TYPE_VARCHAR:
     case TSDB_DATA_TYPE_VARBINARY: {
-      pNode->datum.p = taosMemoryCalloc(1, pNode->node.resType.bytes + VARSTR_HEADER_SIZE + 1);
+      pNode->datum.p = taosMemoryCalloc(1, pNode->node.resType.bytes + 1);
       if (NULL == pNode->datum.p) {
         code = TSDB_CODE_OUT_OF_MEMORY;
         break;

source/libs/nodes/src/nodesMsgFuncs.c

@@ -928,7 +928,7 @@ static int32_t msgToDatum(STlv* pTlv, void* pObj) {
         code = TSDB_CODE_FAILED;
         break;
       }
-      pNode->datum.p = taosMemoryCalloc(1, pNode->node.resType.bytes + VARSTR_HEADER_SIZE + 1);
+      pNode->datum.p = taosMemoryCalloc(1, pNode->node.resType.bytes + 1);
       if (NULL == pNode->datum.p) {
         code = TSDB_CODE_OUT_OF_MEMORY;
         break;

source/libs/nodes/src/nodesUtilFuncs.c

@@ -2101,9 +2101,9 @@ void nodesValueNodeToVariant(const SValueNode* pNode, SVariant* pVal) {
     case TSDB_DATA_TYPE_NCHAR:
     case TSDB_DATA_TYPE_VARCHAR:
     case TSDB_DATA_TYPE_VARBINARY:
-      pVal->pz = taosMemoryMalloc(pVal->nLen + VARSTR_HEADER_SIZE + 1);
+      pVal->pz = taosMemoryMalloc(pVal->nLen + 1);
-      memcpy(pVal->pz, pNode->datum.p, pVal->nLen + VARSTR_HEADER_SIZE);
+      memcpy(pVal->pz, pNode->datum.p, pVal->nLen);
-      pVal->pz[pVal->nLen + VARSTR_HEADER_SIZE] = 0;
+      pVal->pz[pVal->nLen] = 0;
       break;
     case TSDB_DATA_TYPE_JSON:
       pVal->nLen = getJsonValueLen(pNode->datum.p);

source/libs/transport/inc/transComm.h

@@ -148,7 +148,8 @@ typedef struct {
   int8_t  epsetRetryCnt;
   int32_t retryCode;
 
-  int hThrdIdx;
+  void* task;
+  int   hThrdIdx;
 } STransConnCtx;
 
 #pragma pack(push, 1)

source/libs/transport/inc/transportInt.h

@@ -64,11 +64,11 @@ typedef struct {
   void (*destroyFp)(void* ahandle);
   bool (*failFastFp)(tmsg_t msgType);
 
-  int32_t connLimitNum;
+  int32_t       connLimitNum;
-  int8_t  connLimitLock;  // 0: no lock. 1. lock
+  int8_t        connLimitLock;  // 0: no lock. 1. lock
-  int8_t  supportBatch;   // 0: no batch, 1: support batch
+  int8_t        supportBatch;   // 0: no batch, 1: support batch
-  int32_t batchSize;
+  int32_t       batchSize;
-
+  int32_t       timeToGetConn;
   int           index;
   void*         parent;
   void*         tcphandle;  // returned handle from TCP initialization

source/libs/transport/src/trans.c

@@ -66,6 +66,10 @@ void* rpcOpen(const SRpcInit* pInit) {
   pRpc->destroyFp = pInit->dfp;
   pRpc->failFastFp = pInit->ffp;
   pRpc->connLimitNum = pInit->connLimitNum;
+  if (pRpc->connLimitNum == 0) {
+    pRpc->connLimitNum = 20;
+  }
+
   pRpc->connLimitLock = pInit->connLimitLock;
   pRpc->supportBatch = pInit->supportBatch;
   pRpc->batchSize = pInit->batchSize;
@@ -90,7 +94,10 @@ void* rpcOpen(const SRpcInit* pInit) {
   if (pInit->user) {
     tstrncpy(pRpc->user, pInit->user, sizeof(pRpc->user));
   }
-
+  pRpc->timeToGetConn = pInit->timeToGetConn;
+  if (pRpc->timeToGetConn == 0) {
+    pRpc->timeToGetConn = 10 * 1000;
+  }
   pRpc->tcphandle =
       (*taosInitHandle[pRpc->connType])(ip, pInit->localPort, pRpc->label, pRpc->numOfThreads, NULL, pRpc);
 

source/libs/transport/src/transCli.c

@@ -15,9 +15,15 @@
 #include "transComm.h"
 #include "tutil.h"
 
+typedef struct {
+  int32_t numOfConn;
+  queue   msgQ;
+} SMsgList;
+
 typedef struct SConnList {
-  queue   conns;
+  queue     conns;
-  int32_t size;
+  int32_t   size;
+  SMsgList* list;
 } SConnList;
 
 typedef struct {
@@ -100,6 +106,7 @@ typedef struct SCliThrd {
   TdThreadMutex msgMtx;
   SDelayQueue*  delayQueue;
   SDelayQueue*  timeoutQueue;
+  SDelayQueue*  waitConnQueue;
   uint64_t      nextTimeout;  // next timeout
   void*         pTransInst;   //
 
@@ -109,7 +116,6 @@ typedef struct SCliThrd {
   SCvtAddr  cvtAddr;
 
   SHashObj* failFastCache;
-  SHashObj* connLimitCache;
   SHashObj* batchCache;
 
   SCliMsg* stopMsg;
@@ -135,8 +141,8 @@ typedef struct {
 // conn pool
 // add expire timeout and capacity limit
 static void*     createConnPool(int size);
-static void*     destroyConnPool(void* pool);
+static void*     destroyConnPool(SCliThrd* thread);
-static SCliConn* getConnFromPool(void* pool, char* ip, uint32_t port);
+static SCliConn* getConnFromPool(SCliThrd* thread, char* key, bool* exceed);
 static void      addConnToPool(void* pool, SCliConn* conn);
 static void      doCloseIdleConn(void* param);
 
@@ -176,7 +182,8 @@ static void      cliSend(SCliConn* pConn);
 static void      cliSendBatch(SCliConn* pConn);
 static void      cliDestroyConnMsgs(SCliConn* conn, bool destroy);
 
-static int32_t cliPreCheckSessionLimit(SCliThrd* pThrd, char* ip, uint16_t port);
+static void    doFreeTimeoutMsg(void* param);
+static int32_t cliPreCheckSessionLimitForMsg(SCliThrd* pThrd, char* addr, SCliMsg** pMsg);
 
 // cli util func
 static FORCE_INLINE bool cliIsEpsetUpdated(int32_t code, STransConnCtx* pCtx);
@@ -194,6 +201,7 @@ static void cliHandleExcept(SCliConn* conn);
 static void cliReleaseUnfinishedMsg(SCliConn* conn);
 static void cliHandleFastFail(SCliConn* pConn, int status);
 
+static void doNotifyApp(SCliMsg* pMsg, SCliThrd* pThrd);
 // handle req from app
 static void cliHandleReq(SCliMsg* pMsg, SCliThrd* pThrd);
 static void cliHandleQuit(SCliMsg* pMsg, SCliThrd* pThrd);
@@ -543,7 +551,8 @@ void* createConnPool(int size) {
   // thread local, no lock
   return taosHashInit(size, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), false, HASH_NO_LOCK);
 }
-void* destroyConnPool(void* pool) {
+void* destroyConnPool(SCliThrd* pThrd) {
+  void*      pool = pThrd->pool;
   SConnList* connList = taosHashIterate((SHashObj*)pool, NULL);
   while (connList != NULL) {
     while (!QUEUE_IS_EMPTY(&connList->conns)) {
@@ -551,34 +560,130 @@ void* destroyConnPool(void* pool) {
       SCliConn* c = QUEUE_DATA(h, SCliConn, q);
       cliDestroyConn(c, true);
     }
+
+    SMsgList* msglist = connList->list;
+    while (!QUEUE_IS_EMPTY(&msglist->msgQ)) {
+      queue* h = QUEUE_HEAD(&msglist->msgQ);
+      QUEUE_REMOVE(h);
+
+      SCliMsg* pMsg = QUEUE_DATA(h, SCliMsg, q);
+
+      transDQCancel(pThrd->waitConnQueue, pMsg->ctx->task);
+      pMsg->ctx->task = NULL;
+
+      doNotifyApp(pMsg, pThrd);
+    }
+    taosMemoryFree(msglist);
+
     connList = taosHashIterate((SHashObj*)pool, connList);
   }
   taosHashCleanup(pool);
   return NULL;
 }
 
-static SCliConn* getConnFromPool(void* pool, char* ip, uint32_t port) {
+static SCliConn* getConnFromPool(SCliThrd* pThrd, char* key, bool* exceed) {
-  char key[TSDB_FQDN_LEN + 64] = {0};
+  void*      pool = pThrd->pool;
-  CONN_CONSTRUCT_HASH_KEY(key, ip, port);
+  SConnList* plist = taosHashGet((SHashObj*)pool, key, strlen(key));
+  STrans*    pTranInst = pThrd->pTransInst;
+  if (plist == NULL) {
+    SConnList list = {0};
+    taosHashPut((SHashObj*)pool, key, strlen(key), (void*)&list, sizeof(list));
+    plist = taosHashGet(pool, key, strlen(key));
 
+    SMsgList* nList = taosMemoryCalloc(1, sizeof(SMsgList));
+    QUEUE_INIT(&nList->msgQ);
+    nList->numOfConn++;
+
+    QUEUE_INIT(&plist->conns);
+    plist->list = nList;
+  }
+
+  if (QUEUE_IS_EMPTY(&plist->conns)) {
+    if (plist->list->numOfConn >= pTranInst->connLimitNum) {
+      *exceed = true;
+    }
+    return NULL;
+  }
+
+  queue* h = QUEUE_TAIL(&plist->conns);
+  QUEUE_REMOVE(h);
+  plist->size -= 1;
+
+  SCliConn* conn = QUEUE_DATA(h, SCliConn, q);
+  conn->status = ConnNormal;
+  QUEUE_INIT(&conn->q);
+
+  if (conn->task != NULL) {
+    transDQCancel(((SCliThrd*)conn->hostThrd)->timeoutQueue, conn->task);
+    conn->task = NULL;
+  }
+  return conn;
+}
+
+static SCliConn* getConnFromPool2(SCliThrd* pThrd, char* key, SCliMsg** pMsg) {
+  void*      pool = pThrd->pool;
+  STrans*    pTransInst = pThrd->pTransInst;
   SConnList* plist = taosHashGet((SHashObj*)pool, key, strlen(key));
   if (plist == NULL) {
     SConnList list = {0};
     taosHashPut((SHashObj*)pool, key, strlen(key), (void*)&list, sizeof(list));
-    plist = taosHashGet((SHashObj*)pool, key, strlen(key));
+    plist = taosHashGet(pool, key, strlen(key));
-    if (plist == NULL) return NULL;
+
+    SMsgList* nList = taosMemoryCalloc(1, sizeof(SMsgList));
+    QUEUE_INIT(&nList->msgQ);
+    nList->numOfConn++;
+
     QUEUE_INIT(&plist->conns);
+    plist->list = nList;
   }
 
+  STraceId* trace = &(*pMsg)->msg.info.traceId;
+  // no avaliable conn in pool
   if (QUEUE_IS_EMPTY(&plist->conns)) {
+    SMsgList* list = plist->list;
+    if ((list)->numOfConn >= pTransInst->connLimitNum) {
+      STraceId* trace = &(*pMsg)->msg.info.traceId;
+      STaskArg* arg = taosMemoryMalloc(sizeof(STaskArg));
+      arg->param1 = *pMsg;
+      arg->param2 = pThrd;
+      (*pMsg)->ctx->task = transDQSched(pThrd->waitConnQueue, doFreeTimeoutMsg, arg, pTransInst->timeToGetConn);
+
+      tGTrace("%s msg %s delay to send, wait for avaiable connect", pTransInst->label, TMSG_INFO((*pMsg)->msg.msgType));
+
+      QUEUE_PUSH(&(list)->msgQ, &(*pMsg)->q);
+      *pMsg = NULL;
+    } else {
+      // send msg in delay queue
+      if (!(QUEUE_IS_EMPTY(&(list)->msgQ))) {
+        STaskArg* arg = taosMemoryMalloc(sizeof(STaskArg));
+        arg->param1 = *pMsg;
+        arg->param2 = pThrd;
+        (*pMsg)->ctx->task = transDQSched(pThrd->waitConnQueue, doFreeTimeoutMsg, arg, pTransInst->timeToGetConn);
+        tGTrace("%s msg %s delay to send, wait for avaiable connect", pTransInst->label,
+                TMSG_INFO((*pMsg)->msg.msgType));
+
+        QUEUE_PUSH(&(list)->msgQ, &(*pMsg)->q);
+        queue* h = QUEUE_HEAD(&(list)->msgQ);
+        QUEUE_REMOVE(h);
+        SCliMsg* ans = QUEUE_DATA(h, SCliMsg, q);
+
+        *pMsg = ans;
+
+        trace = &(*pMsg)->msg.info.traceId;
+        tGTrace("%s msg %s pop from delay queue, start to send", pTransInst->label, TMSG_INFO((*pMsg)->msg.msgType));
+        transDQCancel(pThrd->waitConnQueue, ans->ctx->task);
+      }
+      list->numOfConn++;
+    }
     return NULL;
   }
 
+  queue* h = QUEUE_TAIL(&plist->conns);
   plist->size -= 1;
-  queue*    h = QUEUE_HEAD(&plist->conns);
+  QUEUE_REMOVE(h);
+
   SCliConn* conn = QUEUE_DATA(h, SCliConn, q);
   conn->status = ConnNormal;
-  QUEUE_REMOVE(&conn->q);
   QUEUE_INIT(&conn->q);
 
   if (conn->task != NULL) {
@@ -606,18 +711,34 @@ static void addConnToPool(void* pool, SCliConn* conn) {
 
   cliDestroyConnMsgs(conn, false);
 
-  conn->status = ConnInPool;
-
   if (conn->list == NULL) {
-    tTrace("%s conn %p added to conn pool, read buf cap:%d", CONN_GET_INST_LABEL(conn), conn, conn->readBuf.cap);
     conn->list = taosHashGet((SHashObj*)pool, conn->ip, strlen(conn->ip));
-  } else {
-    tTrace("%s conn %p added to conn pool, read buf cap:%d", CONN_GET_INST_LABEL(conn), conn, conn->readBuf.cap);
   }
+
+  SConnList* pList = conn->list;
+  SMsgList*  msgList = pList->list;
+  if (!QUEUE_IS_EMPTY(&msgList->msgQ)) {
+    queue* h = QUEUE_HEAD(&(msgList)->msgQ);
+    QUEUE_REMOVE(h);
+
+    SCliMsg* pMsg = QUEUE_DATA(h, SCliMsg, q);
+
+    transDQCancel(thrd->waitConnQueue, pMsg->ctx->task);
+    pMsg->ctx->task = NULL;
+
+    transCtxMerge(&conn->ctx, &pMsg->ctx->appCtx);
+    transQueuePush(&conn->cliMsgs, pMsg);
+
+    conn->status = ConnNormal;
+    cliSend(conn);
+    return;
+  }
+
+  conn->status = ConnInPool;
   QUEUE_PUSH(&conn->list->conns, &conn->q);
   conn->list->size += 1;
 
-  if (conn->list->size >= 250) {
+  if (conn->list->size >= 20) {
     STaskArg* arg = taosMemoryCalloc(1, sizeof(STaskArg));
     arg->param1 = conn;
     arg->param2 = thrd;
@@ -739,8 +860,20 @@ static SCliConn* cliCreateConn(SCliThrd* pThrd) {
 static void cliDestroyConn(SCliConn* conn, bool clear) {
   SCliThrd* pThrd = conn->hostThrd;
   tTrace("%s conn %p remove from conn pool", CONN_GET_INST_LABEL(conn), conn);
+
   QUEUE_REMOVE(&conn->q);
   QUEUE_INIT(&conn->q);
+
+  if (conn->list != NULL) {
+    SConnList* connList = conn->list;
+    connList->list->numOfConn--;
+    connList->size--;
+  } else {
+    SConnList* connList = taosHashGet((SHashObj*)pThrd->pool, conn->ip, strlen(conn->ip));
+    connList->list->numOfConn--;
+  }
+  conn->list = NULL;
+
   transReleaseExHandle(transGetRefMgt(), conn->refId);
   transRemoveExHandle(transGetRefMgt(), conn->refId);
   conn->refId = -1;
@@ -775,9 +908,6 @@ static void cliDestroy(uv_handle_t* handle) {
     conn->timer->data = NULL;
     conn->timer = NULL;
   }
-  int32_t* oVal = taosHashGet(pThrd->connLimitCache, conn->ip, strlen(conn->ip));
-  int32_t  nVal = oVal == NULL ? 0 : (*oVal) - 1;
-  taosHashPut(pThrd->connLimitCache, conn->ip, strlen(conn->ip), &nVal, sizeof(nVal));
 
   atomic_sub_fetch_32(&pThrd->connCount, 1);
 
@@ -1010,11 +1140,15 @@ static void cliHandleBatchReq(SCliBatch* pBatch, SCliThrd* pThrd) {
   STrans*        pTransInst = pThrd->pTransInst;
   SCliBatchList* pList = pBatch->pList;
 
-  SCliConn* conn = getConnFromPool(pThrd->pool, pList->ip, pList->port);
+  char key[TSDB_FQDN_LEN + 64] = {0};
+  CONN_CONSTRUCT_HASH_KEY(key, pList->ip, pList->port);
 
-  if (conn == NULL && 0 != cliPreCheckSessionLimit(pThrd, pList->ip, pList->port)) {
+  bool      exceed = false;
-    tError("%s failed to send batch msg, batch size:%d, msgLen: %d", pTransInst->label, pBatch->wLen,
+  SCliConn* conn = getConnFromPool(pThrd, key, &exceed);
-           pBatch->batchSize);
+
+  if (conn == NULL && exceed) {
+    tError("%s failed to send batch msg, batch size:%d, msgLen: %d, conn limit:%d", pTransInst->label, pBatch->wLen,
+           pBatch->batchSize, pTransInst->connLimitNum);
     cliDestroyBatch(pBatch);
     return;
   }
@@ -1174,10 +1308,6 @@ void cliConnCb(uv_connect_t* req, int status) {
     return;
   }
 
-  int32_t* oVal = taosHashGet(pThrd->connLimitCache, pConn->ip, strlen(pConn->ip));
-  int32_t  nVal = oVal == NULL ? 0 : (*oVal) + 1;
-  taosHashPut(pThrd->connLimitCache, pConn->ip, strlen(pConn->ip), &nVal, sizeof(nVal));
-
   struct sockaddr peername, sockname;
   int             addrlen = sizeof(peername);
   uv_tcp_getpeername((uv_tcp_t*)pConn->stream, &peername, &addrlen);
@@ -1195,6 +1325,29 @@ void cliConnCb(uv_connect_t* req, int status) {
   }
 }
 
+static void doNotifyApp(SCliMsg* pMsg, SCliThrd* pThrd) {
+  STransConnCtx* pCtx = pMsg->ctx;
+  STrans*        pTransInst = pThrd->pTransInst;
+
+  STransMsg transMsg = {0};
+  transMsg.contLen = 0;
+  transMsg.pCont = NULL;
+  transMsg.code = TSDB_CODE_RPC_MAX_SESSIONS;
+  transMsg.msgType = pMsg->msg.msgType + 1;
+  transMsg.info.ahandle = pMsg->ctx->ahandle;
+  transMsg.info.traceId = pMsg->msg.info.traceId;
+  transMsg.info.hasEpSet = false;
+  if (pCtx->pSem != NULL) {
+    if (pCtx->pRsp == NULL) {
+    } else {
+      memcpy((char*)pCtx->pRsp, (char*)&transMsg, sizeof(transMsg));
+    }
+  } else {
+    pTransInst->cfp(pTransInst->parent, &transMsg, NULL);
+  }
+
+  destroyCmsg(pMsg);
+}
 static void cliHandleQuit(SCliMsg* pMsg, SCliThrd* pThrd) {
   if (!transAsyncPoolIsEmpty(pThrd->asyncPool)) {
     pThrd->stopMsg = pMsg;
@@ -1204,7 +1357,8 @@ static void cliHandleQuit(SCliMsg* pMsg, SCliThrd* pThrd) {
   pThrd->quit = true;
   tDebug("cli work thread %p start to quit", pThrd);
   destroyCmsg(pMsg);
-  destroyConnPool(pThrd->pool);
+
+  destroyConnPool(pThrd);
   uv_walk(pThrd->loop, cliWalkCb, NULL);
 }
 static void cliHandleRelease(SCliMsg* pMsg, SCliThrd* pThrd) {
@@ -1237,11 +1391,11 @@ static void cliHandleUpdate(SCliMsg* pMsg, SCliThrd* pThrd) {
   destroyCmsg(pMsg);
 }
 
-SCliConn* cliGetConn(SCliMsg* pMsg, SCliThrd* pThrd, bool* ignore) {
+SCliConn* cliGetConn(SCliMsg** pMsg, SCliThrd* pThrd, bool* ignore, char* addr) {
-  STransConnCtx* pCtx = pMsg->ctx;
+  STransConnCtx* pCtx = (*pMsg)->ctx;
   SCliConn*      conn = NULL;
 
-  int64_t refId = (int64_t)(pMsg->msg.info.handle);
+  int64_t refId = (int64_t)((*pMsg)->msg.info.handle);
   if (refId != 0) {
     SExHandle* exh = transAcquireExHandle(transGetRefMgt(), refId);
     if (exh == NULL) {
@@ -1251,7 +1405,7 @@ SCliConn* cliGetConn(SCliMsg* pMsg, SCliThrd* pThrd, bool* ignore) {
     } else {
       conn = exh->handle;
       if (conn == NULL) {
-        conn = getConnFromPool(pThrd->pool, EPSET_GET_INUSE_IP(&pCtx->epSet), EPSET_GET_INUSE_PORT(&pCtx->epSet));
+        conn = getConnFromPool2(pThrd, addr, pMsg);
         if (conn != NULL) specifyConnRef(conn, true, refId);
       }
       transReleaseExHandle(transGetRefMgt(), refId);
@@ -1259,7 +1413,7 @@ SCliConn* cliGetConn(SCliMsg* pMsg, SCliThrd* pThrd, bool* ignore) {
     return conn;
   };
 
-  conn = getConnFromPool(pThrd->pool, EPSET_GET_INUSE_IP(&pCtx->epSet), EPSET_GET_INUSE_PORT(&pCtx->epSet));
+  conn = getConnFromPool2(pThrd, addr, pMsg);
   if (conn != NULL) {
     tTrace("%s conn %p get from conn pool:%p", CONN_GET_INST_LABEL(conn), conn, pThrd->pool);
   } else {
@@ -1317,57 +1471,34 @@ static FORCE_INLINE void cliUpdateFqdnCache(SHashObj* cache, char* fqdn) {
   return;
 }
 
-static int32_t cliPreCheckSessionLimit(SCliThrd* pThrd, char* ip, uint16_t port) {
+static void doFreeTimeoutMsg(void* param) {
-  STrans* pTransInst = pThrd->pTransInst;
+  STaskArg* arg = param;
+  SCliMsg*  pMsg = arg->param1;
+  SCliThrd* pThrd = arg->param2;
+  STrans*   pTransInst = pThrd->pTransInst;
 
-  // STransConnCtx* pCtx = pMsg->ctx;
+  QUEUE_REMOVE(&pMsg->q);
-  // char*          ip = EPSET_GET_INUSE_IP(&pCtx->epSet);
+  STraceId* trace = &pMsg->msg.info.traceId;
-  // int32_t        port = EPSET_GET_INUSE_PORT(&pCtx->epSet);
+  tGTrace("%s msg %s cannot get available conn after timeout", pTransInst->label, TMSG_INFO(pMsg->msg.msgType));
-
+  doNotifyApp(pMsg, pThrd);
-  char key[TSDB_FQDN_LEN + 64] = {0};
+  taosMemoryFree(arg);
-  CONN_CONSTRUCT_HASH_KEY(key, ip, port);
-
-  int32_t* val = taosHashGet(pThrd->connLimitCache, key, strlen(key));
-  if (val == NULL) return 0;
-
-  if (*val >= pTransInst->connLimitNum) {
-    return -1;
-  }
-  return 0;
 }
 void cliHandleReq(SCliMsg* pMsg, SCliThrd* pThrd) {
-  STrans*        pTransInst = pThrd->pTransInst;
+  STrans* pTransInst = pThrd->pTransInst;
-  STransConnCtx* pCtx = pMsg->ctx;
 
-  cliMayCvtFqdnToIp(&pCtx->epSet, &pThrd->cvtAddr);
+  cliMayCvtFqdnToIp(&pMsg->ctx->epSet, &pThrd->cvtAddr);
-  STraceId* trace = &pMsg->msg.info.traceId;
+  if (!EPSET_IS_VALID(&pMsg->ctx->epSet)) {
-  char*     ip = EPSET_GET_INUSE_IP(&pCtx->epSet);
-  uint16_t  port = EPSET_GET_INUSE_PORT(&pCtx->epSet);
-
-  if (!EPSET_IS_VALID(&pCtx->epSet)) {
-    tGError("%s, msg %s sent with invalid epset", pTransInst->label, TMSG_INFO(pMsg->msg.msgType));
     destroyCmsg(pMsg);
     return;
   }
 
-  if (REQUEST_NO_RESP(&pMsg->msg) && (pTransInst->failFastFp != NULL && pTransInst->failFastFp(pMsg->msg.msgType))) {
+  char*    fqdn = EPSET_GET_INUSE_IP(&pMsg->ctx->epSet);
-    char key[TSDB_FQDN_LEN + 64] = {0};
+  uint16_t port = EPSET_GET_INUSE_PORT(&pMsg->ctx->epSet);
-    CONN_CONSTRUCT_HASH_KEY(key, ip, port);
+  char     addr[TSDB_FQDN_LEN + 64] = {0};
-
+  CONN_CONSTRUCT_HASH_KEY(addr, fqdn, port);
-    SFailFastItem* item = taosHashGet(pThrd->failFastCache, key, strlen(key));
-    if (item != NULL) {
-      int32_t elapse = (int32_t)(taosGetTimestampMs() - item->timestamp);
-      if (item->count >= pTransInst->failFastThreshold && (elapse >= 0 && elapse <= pTransInst->failFastInterval)) {
-        tGTrace("%s, msg %s cancel to send, reason: failed to connect %s:%d: count: %d, at %d", pTransInst->label,
-                TMSG_INFO(pMsg->msg.msgType), ip, port, item->count, elapse);
-        destroyCmsg(pMsg);
-        return;
-      }
-    }
-  }
 
   bool      ignore = false;
-  SCliConn* conn = cliGetConn(pMsg, pThrd, &ignore);
+  SCliConn* conn = cliGetConn(&pMsg, pThrd, &ignore, addr);
   if (ignore == true) {
     // persist conn already release by server
     STransMsg resp;
@@ -1378,16 +1509,13 @@ void cliHandleReq(SCliMsg* pMsg, SCliThrd* pThrd) {
     destroyCmsg(pMsg);
     return;
   }
-
+  if (conn == NULL && pMsg == NULL) {
-  if (conn == NULL && REQUEST_NO_RESP(&pMsg->msg) && 0 != cliPreCheckSessionLimit(pThrd, ip, port)) {
-    tGTrace("%s, msg %s cancel to send, reason: %s", pTransInst->label, TMSG_INFO(pMsg->msg.msgType),
-            tstrerror(TSDB_CODE_RPC_MAX_SESSIONS));
-    destroyCmsg(pMsg);
     return;
   }
+  STraceId* trace = &pMsg->msg.info.traceId;
 
   if (conn != NULL) {
-    transCtxMerge(&conn->ctx, &pCtx->appCtx);
+    transCtxMerge(&conn->ctx, &pMsg->ctx->appCtx);
     transQueuePush(&conn->cliMsgs, pMsg);
     cliSend(conn);
   } else {
@@ -1396,15 +1524,10 @@ void cliHandleReq(SCliMsg* pMsg, SCliThrd* pThrd) {
     int64_t refId = (int64_t)pMsg->msg.info.handle;
     if (refId != 0) specifyConnRef(conn, true, refId);
 
-    transCtxMerge(&conn->ctx, &pCtx->appCtx);
+    transCtxMerge(&conn->ctx, &pMsg->ctx->appCtx);
     transQueuePush(&conn->cliMsgs, pMsg);
 
-    char     key[TSDB_FQDN_LEN + 64] = {0};
+    conn->ip = taosStrdup(addr);
-    char*    fqdn = EPSET_GET_INUSE_IP(&pCtx->epSet);
-    uint16_t port = EPSET_GET_INUSE_PORT(&pCtx->epSet);
-    CONN_CONSTRUCT_HASH_KEY(key, fqdn, port);
-
-    conn->ip = taosStrdup(key);
 
     uint32_t ipaddr = cliGetIpFromFqdnCache(pThrd->fqdn2ipCache, fqdn);
     if (ipaddr == 0xffffffff) {
@@ -1834,14 +1957,14 @@ static SCliThrd* createThrdObj(void* trans) {
 
   transDQCreate(pThrd->loop, &pThrd->timeoutQueue);
 
+  transDQCreate(pThrd->loop, &pThrd->waitConnQueue);
+
   pThrd->nextTimeout = taosGetTimestampMs() + CONN_PERSIST_TIME(pTransInst->idleTime);
   pThrd->pTransInst = trans;
 
   pThrd->destroyAhandleFp = pTransInst->destroyFp;
   pThrd->fqdn2ipCache = taosHashInit(4, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), true, HASH_NO_LOCK);
   pThrd->failFastCache = taosHashInit(8, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), true, HASH_NO_LOCK);
-  pThrd->connLimitCache = taosHashInit(8, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), true,
-                                       pTransInst->connLimitLock == 0 ? HASH_NO_LOCK : HASH_ENTRY_LOCK);
 
   pThrd->batchCache = taosHashInit(8, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), true, HASH_NO_LOCK);
 
@@ -1861,6 +1984,7 @@ static void destroyThrdObj(SCliThrd* pThrd) {
 
   transDQDestroy(pThrd->delayQueue, destroyCmsgAndAhandle);
   transDQDestroy(pThrd->timeoutQueue, NULL);
+  transDQDestroy(pThrd->waitConnQueue, NULL);
 
   tDebug("thread destroy %" PRId64, pThrd->pid);
   for (int i = 0; i < taosArrayGetSize(pThrd->timerList); i++) {
@@ -1872,7 +1996,6 @@ static void destroyThrdObj(SCliThrd* pThrd) {
   taosMemoryFree(pThrd->loop);
   taosHashCleanup(pThrd->fqdn2ipCache);
   taosHashCleanup(pThrd->failFastCache);
-  taosHashCleanup(pThrd->connLimitCache);
 
   void** pIter = taosHashIterate(pThrd->batchCache, NULL);
   while (pIter != NULL) {

source/util/src/thashutil.c

@@ -50,11 +50,6 @@ uint32_t taosDJB2Hash(const char *key, uint32_t len) {
   return hash;
 }
 
-uint32_t xxHash(const char *key, uint32_t len) {
-  int32_t seed = 0xcc9e2d51;
-  return XXH32(key, len, seed);
-}
-
 uint32_t MurmurHash3_32(const char *key, uint32_t len) {
   const uint8_t *data = (const uint8_t *)key;
   const int32_t  nblocks = len >> 2u;

tests/parallel_test/cases.task

@@ -945,7 +945,7 @@
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/function_null.py -Q 3
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/count_partition.py -Q 3
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/max_partition.py -Q 3
-#,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/max_min_last_interval.py -Q 3
+,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/max_min_last_interval.py -Q 3
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/last_row.py -Q 3
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/tsbsQuery.py -Q 3
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/sml.py -Q 3

tests/system-test/0-others/tag_index_advance.py

@@ -0,0 +1,520 @@
+###################################################################
+#           Copyright (c) 2016 by TAOS Technologies, Inc.
+#                     All rights reserved.
+#
+#  This file is proprietary and confidential to TAOS Technologies.
+#  No part of this file may be reproduced, stored, transmitted,
+#  disclosed or used in any form or by any means other than as
+#  expressly provided by the written permission from Jianhui Tao
+#
+###################################################################
+
+# -*- coding: utf-8 -*-
+
+from ssl import ALERT_DESCRIPTION_CERTIFICATE_UNOBTAINABLE
+import taos
+import sys
+import time
+import os
+import socket
+import subprocess
+import random
+import string
+import random
+
+
+from util.log import *
+from util.sql import *
+from util.cases import *
+from util.common import *
+from util.sqlset import *
+
+from util.dnodes import *
+from util.dnodes import TDDnodes
+from util.dnodes import TDDnode
+
+#
+# --------------    util   --------------------------
+#
+def pathSize(path):
+    
+    total_size = 0
+    for dirpath, dirnames, filenames in os.walk(path):
+        for i in filenames:
+            #use join to concatenate all the components of path
+            f = os.path.join(dirpath, i)
+            #use getsize to generate size in bytes and add it to the total size
+            total_size += os.path.getsize(f)
+            #print(dirpath)
+
+    print(" %s  %.02f MB"%(path, total_size/1024/1024))
+    return total_size
+    
+    '''
+    total = 0
+    with os.scandir(path) as it:
+        for entry in it:
+            if entry.is_file():
+                total += entry.stat().st_size
+            elif entry.is_dir():
+                total += pathSize(entry.path)
+    
+    print(" %s  %.02f MB"%(path, total/1024/1024))
+    return total
+    '''
+
+#
+# ---------------    cluster  ------------------------
+#
+
+class MyDnodes(TDDnodes):
+    def __init__(self ,dnodes_lists):
+        super(MyDnodes,self).__init__()
+        self.dnodes = dnodes_lists  # dnode must be TDDnode instance
+        self.simDeployed = False
+
+class TagCluster:
+    noConn = True
+    def init(self, conn, logSql, replicaVar=1):
+        tdLog.debug(f"start to excute {__file__}")
+        self.TDDnodes = None
+        self.depoly_cluster(5)
+        self.master_dnode = self.TDDnodes.dnodes[0]
+        self.host=self.master_dnode.cfgDict["fqdn"]
+        conn1 = taos.connect(self.master_dnode.cfgDict["fqdn"] , config=self.master_dnode.cfgDir)
+        tdSql.init(conn1.cursor())
+
+
+    def getBuildPath(self):
+        selfPath = os.path.dirname(os.path.realpath(__file__))
+
+        if ("community" in selfPath):
+            projPath = selfPath[:selfPath.find("community")]
+        else:
+            projPath = selfPath[:selfPath.find("tests")]
+
+        for root, dirs, files in os.walk(projPath):
+            if ("taosd" in files or "taosd.exe" in files):
+                rootRealPath = os.path.dirname(os.path.realpath(root))
+                if ("packaging" not in rootRealPath):
+                    buildPath = root[:len(root) - len("/build/bin")]
+                    break
+        return buildPath
+
+
+    def depoly_cluster(self ,dnodes_nums):
+
+        testCluster = False
+        valgrind = 0
+        hostname = socket.gethostname()
+        dnodes = []
+        start_port = 6030
+        for num in range(1, dnodes_nums+1):
+            dnode = TDDnode(num)
+            dnode.addExtraCfg("firstEp", f"{hostname}:{start_port}")
+            dnode.addExtraCfg("fqdn", f"{hostname}")
+            dnode.addExtraCfg("serverPort", f"{start_port + (num-1)*100}")
+            dnode.addExtraCfg("monitorFqdn", hostname)
+            dnode.addExtraCfg("monitorPort", 7043)
+            dnodes.append(dnode)
+
+        self.TDDnodes = MyDnodes(dnodes)
+        self.TDDnodes.init("")
+        self.TDDnodes.setTestCluster(testCluster)
+        self.TDDnodes.setValgrind(valgrind)
+
+        self.TDDnodes.setAsan(tdDnodes.getAsan())
+        self.TDDnodes.stopAll()
+        for dnode in self.TDDnodes.dnodes:
+            self.TDDnodes.deploy(dnode.index,{})
+
+        for dnode in self.TDDnodes.dnodes:
+            self.TDDnodes.starttaosd(dnode.index)
+
+        # create cluster
+        dnode_first_host = ""
+        sql = ""
+        for dnode in self.TDDnodes.dnodes[1:]:
+            # print(dnode.cfgDict)
+            dnode_id = dnode.cfgDict["fqdn"] +  ":" +dnode.cfgDict["serverPort"]
+            if dnode_first_host == "":
+                dnode_first_host = dnode.cfgDict["firstEp"].split(":")[0]
+                dnode_first_port = dnode.cfgDict["firstEp"].split(":")[-1]
+            sql += f"create dnode '{dnode_id}'; "
+
+        cmd = f"{self.getBuildPath()}/build/bin/taos -h {dnode_first_host} -P {dnode_first_port} -s "
+        cmd += f'"{sql}"'
+        print(cmd)
+        os.system(cmd) 
+
+        time.sleep(2)
+        tdLog.info(" create cluster done! ")
+
+
+    def getConnection(self, dnode):
+        host = dnode.cfgDict["fqdn"]
+        port = dnode.cfgDict["serverPort"]
+        config_dir = dnode.cfgDir
+        return taos.connect(host=host, port=int(port), config=config_dir)
+        
+    def run(self):
+        tdLog.info(" create cluster ok.")
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success(f"{__file__} successfully executed")
+
+
+class PerfDB:
+    def __init__(self):
+        self.sqls = []
+        self.spends= []
+    
+    # execute
+    def execute(self, sql):
+        print(f"  perfdb execute {sql}")   
+        stime = time.time()
+        ret = tdSql.execute(sql, 1)
+        spend = time.time() - stime
+        
+        self.sqls.append(sql)
+        self.spends.append(spend)
+        return ret
+
+    # query
+    def query(self, sql):
+        print(f"  perfdb query {sql}")   
+        start = time.time()
+        ret = tdSql.query(sql, None, 1)
+        spend = time.time() - start
+        self.sqls.append(sql)
+        self.spends.append(spend)
+        return ret
+
+
+#
+#  -----------------  TDTestCase    ------------------
+#
+class TDTestCase:
+    def init(self, conn, logSql, replicaVar=1):
+        tdLog.debug("start to execute %s" % __file__)
+        self.dbs = [PerfDB(), PerfDB()]
+        self.cur = 0
+        self.tagCluster = TagCluster()
+        self.tagCluster.init(conn, logSql, replicaVar)
+        self.lenBinary = 64
+        self.lenNchar  = 32
+        
+        # column 
+        self.column_dict = {
+            'ts': 'timestamp',
+            'col1': 'tinyint',
+            'col2': 'smallint',
+            'col3': 'int',
+            'col4': 'bigint',
+            'col5': 'tinyint unsigned',
+            'col6': 'smallint unsigned',
+            'col7': 'int unsigned',
+            'col8': 'bigint unsigned',
+            'col9': 'float',
+            'col10': 'double',
+            'col11': 'bool',
+            'col12': f'varchar({self.lenBinary})',
+            'col13': f'nchar({self.lenNchar})'
+        }
+        # tag
+        self.tag_dict = {
+            't1': 'tinyint',
+            't2': 'smallint',
+            't3': 'int',
+            't4': 'bigint',
+            't5': 'tinyint unsigned',
+            't6': 'smallint unsigned',
+            't7': 'int unsigned',
+            't8': 'bigint unsigned',
+            't9': 'float',
+            't10': 'double',
+            't11': 'bool',
+            't12': f'varchar({self.lenBinary})',
+            't13': f'nchar({self.lenNchar})',
+            't14': 'timestamp'
+        }
+
+    # generate specail wide random string
+    def random_string(self, count):
+        letters = string.ascii_letters
+        return ''.join(random.choice(letters) for i in range(count))
+
+    # execute
+    def execute(self, sql):
+        obj = self.dbs[self.cur]
+        return obj.execute(sql)
+
+    # query
+    def query(self, sql):
+        return self.dbs[self.cur].query(sql)   
+    
+    def set_stb_sql(self,stbname,column_dict,tag_dict):
+        column_sql = ''
+        tag_sql = ''
+        for k,v in column_dict.items():
+            column_sql += f"{k} {v}, "
+        for k,v in tag_dict.items():
+            tag_sql += f"{k} {v}, "
+        create_stb_sql = f'create stable {stbname} ({column_sql[:-2]}) tags ({tag_sql[:-2]})'
+        return create_stb_sql
+
+    # create datbase
+    def create_database(self, dbname, vgroups, replica):
+        sql = f'create database {dbname} vgroups {vgroups} replica {replica}'
+        tdSql.execute(sql)
+        #tdSql.execute(sql)
+        tdSql.execute(f'use {dbname}')
+    
+    # create stable and child tables
+    def create_table(self, stbname, tbname, count):
+        # create stable
+        create_table_sql = self.set_stb_sql(stbname, self.column_dict, self.tag_dict)
+        tdSql.execute(create_table_sql)
+
+        # create child table
+        tdLog.info(f" start create {count} child tables.")
+        for i in range(count):
+            ti = i % 128
+            binTxt = self.random_string(self.lenBinary)
+            tags = f'{ti},{ti},{i},{i},{ti},{ti},{i},{i},{i}.000{i},{i}.000{i},true,"{binTxt}","nch{i}",now'
+            sql  = f'create table {tbname}{i} using {stbname} tags({tags})'
+            tdSql.execute(sql)
+            if i > 0 and i % 1000 == 0:
+                tdLog.info(f"  child table count = {i}")
+
+        tdLog.info(f" end create {count} child tables.")
+    
+    
+    # create stable and child tables
+    def create_tagidx(self, stbname):
+        cnt = -1
+        for key in self.tag_dict.keys():
+            # first tag have default index, so skip
+            if cnt == -1:
+                cnt = 0
+                continue; 
+            sql = f'create index idx_{key} on {stbname} ({key})'
+            tdLog.info(f"  sql={sql}")
+            tdSql.execute(sql)
+            cnt += 1
+        tdLog.info(f' create {cnt} tag indexs ok.')
+
+     # insert to child table d1 data
+    def insert_data(self, tbname):
+        # d1 insert 3 rows
+        for i in range(3):
+            sql = f'insert into {tbname}1(ts,col1) values(now+{i}s,{i});' 
+            tdSql.execute(sql)
+        # d20 insert 4
+        for i in range(4):
+            sql = f'insert into {tbname}20(ts,col1) values(now+{i}s,{i});' 
+            tdSql.execute(sql)
+
+    # check show indexs
+    def show_tagidx(self, dbname, stbname):
+        sql = f'select index_name,column_name from information_schema.ins_indexes where db_name="{dbname}"'
+        tdSql.query(sql)
+        rows = len(self.tag_dict.keys())-1
+        tdSql.checkRows(rows)
+
+        for i in range(rows):
+            col_name = tdSql.getData(i, 1)
+            idx_name = f'idx_{col_name}'
+            tdSql.checkData(i, 0, idx_name)
+
+        tdLog.info(f' show {rows} tag indexs ok.')
+
+    # query with tag idx
+    def query_tagidx(self, stbname):
+        sql = f'select * from meters where t2=1'
+        self.query(sql)
+        tdSql.checkRows(3)
+
+        sql = f'select * from meters where t2<10'
+        self.query(sql)
+        tdSql.checkRows(3)
+
+        sql = f'select * from meters where t2>10'
+        self.query(sql)
+        tdSql.checkRows(4)
+
+        sql = f'select * from meters where t3<30'
+        self.query(sql)
+        tdSql.checkRows(7)
+
+        sql = f'select * from meters where t12="11"'
+        tdSql.query(sql)
+        tdSql.checkRows(0)
+
+        sql = f'select * from meters where (t4 < 10 or t5 = 20) and t6= 30'
+        self.query(sql)
+        tdSql.checkRows(0)
+
+        sql = f'select * from meters where (t7 < 20 and t8 = 20) or t4 = 20'
+        self.query(sql)
+        tdSql.checkRows(4)
+
+        sql = f'select * from meters where t12 like "%ab%" '
+        self.query(sql)
+        tdSql.checkRows(0)
+
+        sql = f'select * from meters where t13 = "d20" '
+        self.query(sql)
+        tdSql.checkRows(0)
+
+        sql = f'select * from meters where t13 = "nch20" '
+        self.query(sql)
+        tdSql.checkRows(4)
+
+        sql = f'select * from meters where tbname = "d20" '
+        self.query(sql)
+        tdSql.checkRows(4)
+
+
+    # drop child table
+    def drop_tables(self, tbname, count):
+        # table d1 and d20 have verify data , so can not drop
+        start = random.randint(21, count/2)
+        end   = random.randint(count/2 + 1, count - 1)
+        for i in range(start, end):
+            sql = f'drop table {tbname}{i}'
+            tdSql.execute(sql)
+        cnt = end - start + 1    
+        tdLog.info(f' drop table from {start} to {end} count={cnt}')     
+
+    # drop tag index
+    def drop_tagidx(self, dbname, stbname):
+        # drop index
+        cnt = -1
+        for key in self.tag_dict.keys():
+            # first tag have default index, so skip
+            if cnt == -1:
+                cnt = 0
+                continue; 
+            sql = f'drop index idx_{key}'
+            tdSql.execute(sql)
+            cnt += 1
+        
+        # check idx result is 0
+        sql = f'select index_name,column_name from information_schema.ins_indexes where db_name="{dbname}"'
+        tdSql.query(sql)
+        tdSql.checkRows(0)
+        tdLog.info(f' drop {cnt} tag indexs ok.')
+
+    # show performance
+    def show_performance(self, count) :
+        db = self.dbs[0] 
+        db1 = self.dbs[1]
+        cnt = len(db.sqls)
+        cnt1 = len(db1.sqls)
+        if  cnt != len(db1.sqls):
+            tdLog.info(f"  datebase sql count not equal. cnt={cnt}  cnt1={cnt1}\n")
+            return False
+
+        tdLog.info(f" database sql cnt ={cnt}")
+        print(f"  ----------------- performance (child tables = {count})--------------------")
+        print("   No  time(index) time(no-index) diff(col3-col2) rate(col2/col3)  sql")
+        for i in range(cnt):
+            key = db.sqls[i]
+            value = db.spends[i]
+            key1 = db1.sqls[i]
+            value1 = db1.spends[i]
+            diff = value1 - value
+            rate = value/value1*100
+            print("   %d   %.3fs      %.3fs          %.3fs         %d%%          %s"%(i+1, value, value1, diff, rate, key))
+        print("  --------------------- end ------------------------")
+        return True 
+    
+    def show_diskspace(self):
+        #calc
+        selfPath = os.path.dirname(os.path.realpath(__file__))
+        projPath = ""
+        if ("community" in selfPath):
+            projPath = selfPath[:selfPath.find("community")]
+        else:
+            projPath = selfPath[:selfPath.find("tests")]
+
+        # total
+        vnode2_size = pathSize(projPath + "sim/dnode2/data/vnode/vnode2/")
+        vnode3_size = pathSize(projPath + "sim/dnode3/data/vnode/vnode3/")
+        vnode4_size = pathSize(projPath + "sim/dnode4/data/vnode/vnode4/")
+        vnode5_size = pathSize(projPath + "sim/dnode5/data/vnode/vnode5/")
+
+        # show
+        print("  ----------------- disk space --------------------")
+        idx_size = vnode2_size + vnode3_size
+        noidx_size = vnode4_size + vnode5_size
+
+        print("  index    = %.02f M"%(idx_size/1024/1024))
+        print("  no-index = %.02f M"%(noidx_size/1024/1024))
+        print("  index/no-index = %.2f multiple"%(idx_size/noidx_size))
+
+        print("  -------------------- end ------------------------")
+
+
+
+
+    # main
+    def testdb(self, dbname, stable, tbname, count, createidx):
+        # cur
+        if createidx:
+            self.cur = 0
+        else :
+            self.cur = 1
+
+        # do 
+        self.create_database(dbname, 2, 1)
+        self.create_table(stable, tbname, count)
+        if(createidx):
+           self.create_tagidx(stable)
+        self.insert_data(tbname)
+        if(createidx):
+           self.show_tagidx(dbname,stable)
+        self.query_tagidx(stable)
+        #self.drop_tables(tbname, count)
+        #if(createidx):
+        #   self.drop_tagidx(dbname, stable)
+        # query after delete , expect no crash
+        #self.query_tagidx(stable)
+        tdSql.execute(f'flush database {dbname}')
+
+    # run
+    def run(self):
+        self.tagCluster.run()
+        
+        # var
+        dbname = "tagindex"
+        dbname1 = dbname + "1"
+        stable = "meters"
+        tbname = "d"
+        count = 10000
+
+        # test db
+        tdLog.info(f" -------------  {dbname} ----------")
+        self.testdb(dbname, stable, tbname, count, True)
+        tdLog.info(f" -------------  {dbname1} ----------")
+        self.testdb(dbname1, stable, tbname, count, False)
+
+        # show test result
+        self.show_performance(count)
+
+        self.tagCluster.TDDnodes.stopAll()
+        sec = 10
+        print(f" sleep {sec}s wait taosd stopping ...")
+        time.sleep(sec)
+
+        self.show_diskspace()
+
+
+    def stop(self):
+        self.tagCluster.stop()
+        tdLog.success("%s successfully executed" % __file__)
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())

tests/system-test/0-others/tag_index_basic.py

@@ -107,11 +107,11 @@ class TDTestCase:
     def insert_data(self, tbname):
         # d1 insert 3 rows
         for i in range(3):
-            sql = f'insert into {tbname}1(ts,col1) values(now,{i});' 
+            sql = f'insert into {tbname}1(ts,col1) values(now+{i}s,{i});' 
             tdSql.execute(sql)
         # d20 insert 4
         for i in range(4):
-            sql = f'insert into {tbname}20(ts,col1) values(now,{i});' 
+            sql = f'insert into {tbname}20(ts,col1) values(now+{i}s,{i});' 
             tdSql.execute(sql)
 
     # check show indexs
@@ -150,6 +150,22 @@ class TDTestCase:
         tdSql.query(sql)
         tdSql.checkRows(0)
 
+        sql = f'select t12 ,t13,tbname from meters where t13="nch20"'
+        tdSql.query(sql)
+        tdSql.checkRows(4)
+
+        sql = f'select * from meters where t12 like "%ab%" '
+        tdSql.query(sql)
+        tdSql.checkRows(0)
+
+        sql = f'select * from meters where t13 = "d20" '
+        tdSql.query(sql)
+        tdSql.checkRows(0)
+
+        sql = f'select * from meters where tbname = "d20" '
+        tdSql.query(sql)
+        tdSql.checkRows(4)
+
         sql = f'select * from meters where (t4 < 10 or t5 = 20) and t6= 30'
         tdSql.query(sql)
         tdSql.checkRows(0)
@@ -188,6 +204,22 @@ class TDTestCase:
         tdSql.checkRows(0)
         tdLog.info(f' drop {cnt} tag indexs ok.')
 
+    # create long name idx 
+    def longname_idx(self, stbname):
+        long_name = "aaaaaaaaaabbbbbbbbbbccccccccccddddddddddeeeeeeeeeeffffffffffgggggggggghhhhhhhhhhiiiiiiiiiijjjjjjjjjjkkkkkkkkkkllllllllllmmmmmmmmmm"
+        key = "t3"
+        sql = f'create index {long_name} on {stbname} ({key})'
+        tdSql.error(sql)
+
+        long_name = "aaaaaaaaaabbbbbbbbbbccccccccccddddddddddeeeeeeeeeeffffffffff"
+        key = "t3"
+        sql = f'create index {long_name} on {stbname} ({key})'
+        tdLog.info(f"{sql}")
+        tdSql.execute(sql)
+        sql = f'drop index {long_name}'
+        tdLog.info(f"{sql}")
+        tdSql.execute(sql)
+
     # run
     def run(self):
         # var
@@ -204,6 +236,7 @@ class TDTestCase:
         self.drop_tagidx(stable)
         # query after delete , expect no crash
         self.query_tagidx(stable)
+        self.longname_idx(stable)
 
 
     def stop(self):

tests/system-test/2-query/out_of_order.py

@@ -25,7 +25,7 @@ class TDTestCase:
     def init(self, conn, logSql, replicaVar):
         tdLog.debug("start to execute %s" % __file__)
         tdSql.init(conn.cursor(), logSql)
-        
+
     def getBuildPath(self):
         selfPath = os.path.dirname(os.path.realpath(__file__))
 
@@ -41,9 +41,9 @@ class TDTestCase:
                     buildPath = root[:len(root)-len("/build/bin")]
                     break
         return buildPath
-        
+
     def run_benchmark(self,dbname,tables,per_table_num,order,replica):
-        #O :Out of order 
+        #O :Out of order
         #A :Repliaca
         buildPath = self.getBuildPath()
         if (buildPath == ""):
@@ -53,135 +53,147 @@ class TDTestCase:
         binPath = buildPath+ "/build/bin/"
 
         os.system("%staosBenchmark -d %s -t %d -n %d -O %d -a %d -b float,double,nchar\(200\),binary\(50\) -T 50 -y " % (binPath,dbname,tables,per_table_num,order,replica))
-        
+
     def sql_base(self,dbname):
         self.check_sub(dbname)
         sql1 = "select count(*) from %s.meters" %dbname
         self.sql_base_check(sql1,sql1)
-        
+
         self.check_sub(dbname)
         sql2 = "select count(ts) from %s.meters" %dbname
         self.sql_base_check(sql1,sql2)
-        
+
         self.check_sub(dbname)
         sql2 = "select count(_c0) from %s.meters" %dbname
         self.sql_base_check(sql1,sql2)
-        
+
         self.check_sub(dbname)
         sql2 = "select count(c0) from %s.meters" %dbname
         self.sql_base_check(sql1,sql2)
-        
+
         self.check_sub(dbname)
         sql2 = "select count(c1) from %s.meters" %dbname
         self.sql_base_check(sql1,sql2)
-        
+
         self.check_sub(dbname)
         sql2 = "select count(c2) from %s.meters" %dbname
         self.sql_base_check(sql1,sql2)
-        
+
         self.check_sub(dbname)
         sql2 = "select count(c3) from %s.meters" %dbname
         self.sql_base_check(sql1,sql2)
-        
+
         self.check_sub(dbname)
         sql2 = "select count(t0) from %s.meters" %dbname
         self.sql_base_check(sql1,sql2)
-        
+
         self.check_sub(dbname)
         sql2 = "select count(t1) from %s.meters" %dbname
         self.sql_base_check(sql1,sql2)
-        
+
-        
+
         self.check_sub(dbname)
         sql2 = "select count(ts) from (select * from %s.meters)" %dbname
         self.sql_base_check(sql1,sql2)
-        
+
         self.check_sub(dbname)
         sql2 = "select count(_c0) from (select * from %s.meters)" %dbname
         self.sql_base_check(sql1,sql2)
-        
+
         self.check_sub(dbname)
         sql2 = "select count(c0) from (select * from %s.meters)" %dbname
         self.sql_base_check(sql1,sql2)
-        
+
         self.check_sub(dbname)
         sql2 = "select count(c1) from (select * from %s.meters)" %dbname
         self.sql_base_check(sql1,sql2)
-        
+
         self.check_sub(dbname)
         sql2 = "select count(c2) from (select * from %s.meters)" %dbname
         self.sql_base_check(sql1,sql2)
-        
+
         self.check_sub(dbname)
         sql2 = "select count(c3) from (select * from %s.meters)" %dbname
         self.sql_base_check(sql1,sql2)
-        
+
         self.check_sub(dbname)
         sql2 = "select count(t0) from (select * from %s.meters)" %dbname
         self.sql_base_check(sql1,sql2)
-        
+
         self.check_sub(dbname)
         sql2 = "select count(t1) from (select * from %s.meters)" %dbname
         self.sql_base_check(sql1,sql2)
-        
+
-        
+        # TD-22520
+        tdSql.query("select tbname, ts from %s.meters where ts < '2017-07-14 10:40:00' order by ts asc limit 150;" %dbname)
+        tdSql.checkRows(150)
+
+        tdSql.query("select tbname, ts from %s.meters where ts < '2017-07-14 10:40:00' order by ts asc limit 300;" %dbname)
+        tdSql.checkRows(300)
+
+        tdSql.query("select tbname, ts from %s.meters where ts < '2017-07-14 10:40:00' order by ts desc limit 150;" %dbname)
+        tdSql.checkRows(150)
+
+        tdSql.query("select tbname, ts from %s.meters where ts < '2017-07-14 10:40:00' order by ts desc limit 300;" %dbname)
+        tdSql.checkRows(300)
+
     def sql_base_check(self,sql1,sql2):
         tdSql.query(sql1)
         sql1_result = tdSql.getData(0,0)
         tdLog.info("sql:%s , result: %s" %(sql1,sql1_result))
-        
+
         tdSql.query(sql2)
         sql2_result = tdSql.getData(0,0)
         tdLog.info("sql:%s , result: %s" %(sql2,sql2_result))
-        
+
         if sql1_result==sql2_result:
-            tdLog.info(f"checkEqual success, sql1_result={sql1_result},sql2_result={sql2_result}") 
+            tdLog.info(f"checkEqual success, sql1_result={sql1_result},sql2_result={sql2_result}")
         else :
-            tdLog.exit(f"checkEqual error, sql1_result=={sql1_result},sql2_result={sql2_result}") 
+            tdLog.exit(f"checkEqual error, sql1_result=={sql1_result},sql2_result={sql2_result}")
-                
+
     def run_sql(self,dbname):
         self.sql_base(dbname)
-        
+
         tdSql.execute(" flush database %s;" %dbname)
-        
+
         self.sql_base(dbname)
-                
+
     def check_sub(self,dbname):
-        
+
         sql = "select count(*) from (select distinct(tbname) from %s.meters)" %dbname
         tdSql.query(sql)
         num = tdSql.getData(0,0)
-        
+
         for i in range(0,num):
             sql1 = "select count(*) from %s.d%d" %(dbname,i)
             tdSql.query(sql1)
             sql1_result = tdSql.getData(0,0)
             tdLog.info("sql:%s , result: %s" %(sql1,sql1_result))
-           
+
     def check_out_of_order(self,dbname,tables,per_table_num,order,replica):
         self.run_benchmark(dbname,tables,per_table_num,order,replica)
         print("sleep 10 seconds")
         #time.sleep(10)
         print("sleep 10 seconds finish")
-        
+
         self.run_sql(dbname)
-            
+
     def run(self):
-        startTime = time.time()  
+        startTime = time.time()
-        
+
-        #self.check_out_of_order('db1',10,random.randint(10000,50000),random.randint(1,10),1)  
+        #self.check_out_of_order('db1',10,random.randint(10000,50000),random.randint(1,10),1)
-        self.check_out_of_order('db1',random.randint(50,200),random.randint(10000,20000),random.randint(1,5),1)      
+        self.check_out_of_order('db1',random.randint(50,200),random.randint(10000,20000),random.randint(1,5),1)
-        
+
-        # self.check_out_of_order('db2',random.randint(50,200),random.randint(10000,50000),random.randint(5,50),1)  
+        # self.check_out_of_order('db2',random.randint(50,200),random.randint(10000,50000),random.randint(5,50),1)
-         
+
-        # self.check_out_of_order('db3',random.randint(50,200),random.randint(10000,50000),random.randint(50,100),1)         
+        # self.check_out_of_order('db3',random.randint(50,200),random.randint(10000,50000),random.randint(50,100),1)
-        
+
-        # self.check_out_of_order('db4',random.randint(50,200),random.randint(10000,50000),100,1)    
+        # self.check_out_of_order('db4',random.randint(50,200),random.randint(10000,50000),100,1)
-         
+
         endTime = time.time()
         print("total time %ds" % (endTime - startTime))
-       
+
-        
+
     def stop(self):
         tdSql.close()
         tdLog.success("%s successfully executed" % __file__)

tools/shell/src/shellAuto.c

@@ -86,8 +86,8 @@ SWords shellCommands[] = {
      "<anyword> <db_options> <anyword> <db_options> <anyword> <db_options> <anyword> <db_options> <anyword> "
      "<db_options> <anyword> <db_options> <anyword> ;",
      0, 0, NULL},
-    {"create dnode ", 0, 0, NULL},
+    {"create dnode <anyword>", 0, 0, NULL},
-    {"create index ", 0, 0, NULL},
+    {"create index <anyword> on <stb_name> ()", 0, 0, NULL},
     {"create mnode on dnode <dnode_id> ;", 0, 0, NULL},
     {"create qnode on dnode <dnode_id> ;", 0, 0, NULL},
     {"create stream <anyword> into <anyword> as select", 0, 0, NULL},  // 26 append sub sql
@@ -98,6 +98,7 @@ SWords shellCommands[] = {
     {"describe <all_table>", 0, 0, NULL},
     {"delete from <all_table> where ", 0, 0, NULL},
     {"drop database <db_name>", 0, 0, NULL},
+    {"drop index <anyword>", 0, 0, NULL},
     {"drop table <all_table>", 0, 0, NULL},
     {"drop dnode <dnode_id>", 0, 0, NULL},
     {"drop mnode on dnode <dnode_id> ;", 0, 0, NULL},
@@ -384,7 +385,7 @@ void showHelp() {
     create table <tb_name> using <stb_name> tags ...\n\
     create database <db_name> <db_options>  ...\n\
     create dnode \"fqdn:port\" ...\n\
-    create index ...\n\
+    create index <index_name> on <stb_name> (tag_column_name);\n\
     create mnode on dnode <dnode_id> ;\n\
     create qnode on dnode <dnode_id> ;\n\
     create stream <stream_name> into <stb_name> as select ...\n\
@@ -404,6 +405,7 @@ void showHelp() {
     drop consumer group ... \n\
     drop topic <topic_name> ;\n\
     drop stream <stream_name> ;\n\
+    drop index <index_name>;\n\
   ----- E ----- \n\
     explain select clause ...\n\
   ----- F ----- \n\
@@ -534,7 +536,7 @@ SWord* addWord(const char* p, int32_t len, bool pattern) {
   word->len = len;
 
   // check format
-  if (pattern) {
+  if (pattern && len > 0) {
     word->type = wordType(p, len);
   } else {
     word->type = WT_TEXT;
@@ -1724,6 +1726,9 @@ bool matchEnd(TAOS* con, SShellCmd* cmd) {
   if (strlen(last) == 0) {
     goto _return;
   }
+  if (strcmp(last, " ") == 0) {
+    goto _return;
+  }
 
   // match database
   if (elast == NULL) {

tools/shell/src/shellNettest.c

@@ -21,7 +21,7 @@ static void shellWorkAsClient() {
   SRpcInit    rpcInit = {0};
   SEpSet      epSet = {.inUse = 0, .numOfEps = 1};
   SRpcMsg     rpcRsp = {0};
-  void *      clientRpc = NULL;
+  void       *clientRpc = NULL;
   char        pass[TSDB_PASSWORD_LEN + 1] = {0};
 
   taosEncryptPass_c((uint8_t *)("_pwd"), strlen("_pwd"), pass);
@@ -31,6 +31,7 @@ static void shellWorkAsClient() {
   rpcInit.connType = TAOS_CONN_CLIENT;
   rpcInit.idleTime = tsShellActivityTimer * 1000;
   rpcInit.user = "_dnd";
+  rpcInit.timeToGetConn = tsTimeToGetAvailableConn;
 
   clientRpc = rpcOpen(&rpcInit);
   if (clientRpc == NULL) {

utils/test/c/sml_test.c

@@ -215,8 +215,8 @@ int smlProcess_json3_Test() {
   taos_free_result(pRes);
 
   const char *sql[] = {
-      "[{\"metric\":\"sys.cpu.nice3\",\"timestamp\":0,\"value\":\"18\",\"tags\":{\"host\":\"web01\",\"id\":\"t1\","
+      "[{\"metric\":\"sys.cpu.nice3\",\"timestamp\":0,\"value\":\"18\",\"tags\":{\"host\":\"web01\",\"id\":\"t1\",\"dc\":\"lga\"}}]"
-      "\"dc\":\"lga\"}}]"};
+  };
   char *sql1[1] = {0};
   for (int i = 0; i < 1; i++) {
     sql1[i] = taosMemoryCalloc(1, 1024);

utils/test/c/tmqSim.c

@@ -856,7 +856,9 @@ void loop_consume(SThreadInfo* pInfo) {
   taosFprintfFile(g_fp, "==== consumerId: %d, consumeMsgCnt: %" PRId64 ", consumeRowCnt: %" PRId64 "\n",
                   pInfo->consumerId, pInfo->consumeMsgCnt, pInfo->consumeRowCnt);
 
-  taosFsyncFile(pInfo->pConsumeRowsFile);
+  if(taosFsyncFile(pInfo->pConsumeRowsFile) < 0){
+    printf("taosFsyncFile error:%s", strerror(errno));
+  }
   taosCloseFile(&pInfo->pConsumeRowsFile);
 }