Merge branch '3.0' into enh/TD-18139

2022-08-08 16:13:41 +08:00 · 2022-08-08 16:13:41 +08:00 · 7d0f42aa0d
parent c2d2f554f2 0a84910be1
commit 7d0f42aa0d
114 changed files with 1458 additions and 889 deletions
--- a/cmake/cmake.install
+++ b/cmake/cmake.install
@ -10,7 +10,9 @@ ELSEIF (TD_WINDOWS)
  # INSTALL(DIRECTORY ${TD_SOURCE_DIR}/src/connector/python DESTINATION connector)
  # INSTALL(DIRECTORY ${TD_SOURCE_DIR}/src/connector/C\# DESTINATION connector)
  # INSTALL(DIRECTORY ${TD_SOURCE_DIR}/examples DESTINATION .)
-  INSTALL(FILES ${TD_SOURCE_DIR}/packaging/cfg/taos.cfg DESTINATION cfg)
+  INSTALL(CODE "IF (NOT EXISTS ${CMAKE_INSTALL_PREFIX}/cfg/taos.cfg)
+    execute_process(COMMAND ${CMAKE_COMMAND} -E copy ${TD_SOURCE_DIR}/packaging/cfg/taos.cfg ${CMAKE_INSTALL_PREFIX}/cfg/taos.cfg)
+  ENDIF ()")
  INSTALL(FILES ${TD_SOURCE_DIR}/include/client/taos.h DESTINATION include)
  INSTALL(FILES ${TD_SOURCE_DIR}/include/util/taoserror.h DESTINATION include)
  INSTALL(FILES ${TD_SOURCE_DIR}/include/libs/function/taosudf.h DESTINATION include)
--- a/cmake/taostools_CMakeLists.txt.in
+++ b/cmake/taostools_CMakeLists.txt.in
@ -2,7 +2,7 @@
 # taos-tools
 ExternalProject_Add(taos-tools
        GIT_REPOSITORY https://github.com/taosdata/taos-tools.git
-        GIT_TAG 8a5e336
+        GIT_TAG 3c7dafe
        SOURCE_DIR "${TD_SOURCE_DIR}/tools/taos-tools"
        BINARY_DIR ""
        #BUILD_IN_SOURCE TRUE
--- a/contrib/CMakeLists.txt
+++ b/contrib/CMakeLists.txt
@ -27,6 +27,10 @@ else ()
    cat("${TD_SUPPORT_DIR}/taosadapter_CMakeLists.txt.in" ${CONTRIB_TMP_FILE})
 endif()

+if(TD_LINUX_64 AND JEMALLOC_ENABLED)
+    cat("${TD_SUPPORT_DIR}/jemalloc_CMakeLists.txt.in" ${CONTRIB_TMP_FILE})
+endif()
+
 # pthread
 if(${BUILD_PTHREAD})
    cat("${TD_SUPPORT_DIR}/pthread_CMakeLists.txt.in" ${CONTRIB_TMP_FILE})
@ -392,6 +396,19 @@ if(${BUILD_WITH_SQLITE})
    endif(NOT TD_WINDOWS)
 endif(${BUILD_WITH_SQLITE})

+# jemalloc
+IF (TD_LINUX_64 AND JEMALLOC_ENABLED)
+    include(ExternalProject)
+    ExternalProject_Add(jemalloc
+        PREFIX        "jemalloc"
+        SOURCE_DIR    ${CMAKE_CURRENT_SOURCE_DIR}/jemalloc
+        BUILD_IN_SOURCE     1
+        CONFIGURE_COMMAND   ./autogen.sh COMMAND ./configure --prefix=${CMAKE_BINARY_DIR}/build/
+        BUILD_COMMAND       ${MAKE}
+        )
+    INCLUDE_DIRECTORIES(${CMAKE_BINARY_DIR}/build/include)
+ENDIF ()
+
 # addr2line
 if(${BUILD_ADDR2LINE})
    if(NOT ${TD_WINDOWS})    
--- a/docs/examples/go/connect/afconn/main.go
+++ b/docs/examples/go/connect/afconn/main.go
@ -2,6 +2,7 @@ package main

 import (
 	"fmt"
+	"log"

 	"github.com/taosdata/driver-go/v3/af"
 )
@ -10,7 +11,7 @@ func main() {
 	conn, err := af.Open("localhost", "root", "taosdata", "", 6030)
 	defer conn.Close()
 	if err != nil {
-		fmt.Println("failed to connect, err:", err)
+		log.Fatalln("failed to connect, err:", err)
 	} else {
 		fmt.Println("connected")
 	}
--- a/docs/examples/go/connect/cgoexample/main.go
+++ b/docs/examples/go/connect/cgoexample/main.go
@ -3,6 +3,7 @@ package main
 import (
 	"database/sql"
 	"fmt"
+	"log"

 	_ "github.com/taosdata/driver-go/v3/taosSql"
 )
@ -11,7 +12,7 @@ func main() {
 	var taosDSN = "root:taosdata@tcp(localhost:6030)/"
 	taos, err := sql.Open("taosSql", taosDSN)
 	if err != nil {
-		fmt.Println("failed to connect TDengine, err:", err)
+		log.Fatalln("failed to connect TDengine, err:", err)
 		return
 	}
 	fmt.Println("Connected")
--- a/docs/examples/go/connect/restexample/main.go
+++ b/docs/examples/go/connect/restexample/main.go
@ -3,6 +3,7 @@ package main
 import (
 	"database/sql"
 	"fmt"
+	"log"

 	_ "github.com/taosdata/driver-go/v3/taosRestful"
 )
@ -11,7 +12,7 @@ func main() {
 	var taosDSN = "root:taosdata@http(localhost:6041)/"
 	taos, err := sql.Open("taosRestful", taosDSN)
 	if err != nil {
-		fmt.Println("failed to connect TDengine, err:", err)
+		log.Fatalln("failed to connect TDengine, err:", err)
 		return
 	}
 	fmt.Println("Connected")
--- a/docs/examples/go/connect/wrapper/main.go
+++ b/docs/examples/go/connect/wrapper/main.go
@ -1,17 +0,0 @@
-package main
-
-import (
-	"fmt"
-
-	"github.com/taosdata/driver-go/v3/wrapper"
-)
-
-func main() {
-	conn, err := wrapper.TaosConnect("localhost", "root", "taosdata", "", 6030)
-	defer wrapper.TaosClose(conn)
-	if err != nil {
-		fmt.Println("fail to connect, err:", err)
-	} else {
-		fmt.Println("connected")
-	}
-}
--- a/docs/examples/go/insert/json/main.go
+++ b/docs/examples/go/insert/json/main.go
@ -1,7 +1,7 @@
 package main

 import (
-	"fmt"
+	"log"

 	"github.com/taosdata/driver-go/v3/af"
 )
@ -20,7 +20,7 @@ func prepareDatabase(conn *af.Connector) {
 func main() {
 	conn, err := af.Open("localhost", "root", "taosdata", "", 6030)
 	if err != nil {
-		fmt.Println("fail to connect, err:", err)
+		log.Fatalln("fail to connect, err:", err)
 	}
 	defer conn.Close()
 	prepareDatabase(conn)
@ -32,6 +32,6 @@ func main() {

 	err = conn.OpenTSDBInsertJsonPayload(payload)
 	if err != nil {
-		fmt.Println("insert error:", err)
+		log.Fatalln("insert error:", err)
 	}
 }
--- a/docs/examples/go/insert/line/main.go
+++ b/docs/examples/go/insert/line/main.go
@ -2,6 +2,7 @@ package main

 import (
 	"fmt"
+	"log"

 	"github.com/taosdata/driver-go/v3/af"
 )
@ -33,6 +34,6 @@ func main() {

 	err = conn.InfluxDBInsertLines(lines, "ms")
 	if err != nil {
-		fmt.Println("insert error:", err)
+		log.Fatalln("insert error:", err)
 	}
 }
--- a/docs/examples/go/insert/sql/main.go
+++ b/docs/examples/go/insert/sql/main.go
@ -3,6 +3,7 @@ package main
 import (
 	"database/sql"
 	"fmt"
+	"log"

 	_ "github.com/taosdata/driver-go/v3/taosRestful"
 )
@ -10,28 +11,26 @@ import (
 func createStable(taos *sql.DB) {
 	_, err := taos.Exec("CREATE DATABASE power")
 	if err != nil {
-		fmt.Println("failed to create database, err:", err)
+		log.Fatalln("failed to create database, err:", err)
 	}
 	_, err = taos.Exec("CREATE STABLE power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (location BINARY(64), groupId INT)")
 	if err != nil {
-		fmt.Println("failed to create stable, err:", err)
+		log.Fatalln("failed to create stable, err:", err)
 	}
 }

 func insertData(taos *sql.DB) {
-	sql := `INSERT INTO power.d1001 USING power.meters TAGS(California.SanFrancisco, 2) VALUES ('2018-10-03 14:38:05.000', 10.30000, 219, 0.31000) ('2018-10-03 14:38:15.000', 12.60000, 218, 0.33000) ('2018-10-03 14:38:16.800', 12.30000, 221, 0.31000)
-	power.d1002 USING power.meters TAGS(California.SanFrancisco, 3) VALUES ('2018-10-03 14:38:16.650', 10.30000, 218, 0.25000)
-	power.d1003 USING power.meters TAGS(California.LosAngeles, 2) VALUES ('2018-10-03 14:38:05.500', 11.80000, 221, 0.28000) ('2018-10-03 14:38:16.600', 13.40000, 223, 0.29000)
-	power.d1004 USING power.meters TAGS(California.LosAngeles, 3) VALUES ('2018-10-03 14:38:05.000', 10.80000, 223, 0.29000) ('2018-10-03 14:38:06.500', 11.50000, 221, 0.35000)`
+	sql := `INSERT INTO power.d1001 USING power.meters TAGS('California.SanFrancisco', 2) VALUES ('2018-10-03 14:38:05.000', 10.30000, 219, 0.31000) ('2018-10-03 14:38:15.000', 12.60000, 218, 0.33000) ('2018-10-03 14:38:16.800', 12.30000, 221, 0.31000)
+	power.d1002 USING power.meters TAGS('California.SanFrancisco', 3) VALUES ('2018-10-03 14:38:16.650', 10.30000, 218, 0.25000)
+	power.d1003 USING power.meters TAGS('California.LosAngeles', 2) VALUES ('2018-10-03 14:38:05.500', 11.80000, 221, 0.28000) ('2018-10-03 14:38:16.600', 13.40000, 223, 0.29000)
+	power.d1004 USING power.meters TAGS('California.LosAngeles', 3) VALUES ('2018-10-03 14:38:05.000', 10.80000, 223, 0.29000) ('2018-10-03 14:38:06.500', 11.50000, 221, 0.35000)`
 	result, err := taos.Exec(sql)
 	if err != nil {
-		fmt.Println("failed to insert, err:", err)
-		return
+		log.Fatalln("failed to insert, err:", err)
 	}
 	rowsAffected, err := result.RowsAffected()
 	if err != nil {
-		fmt.Println("failed to get affected rows, err:", err)
-		return
+		log.Fatalln("failed to get affected rows, err:", err)
 	}
 	fmt.Println("RowsAffected", rowsAffected)
 }
@ -40,8 +39,7 @@ func main() {
 	var taosDSN = "root:taosdata@http(localhost:6041)/"
 	taos, err := sql.Open("taosRestful", taosDSN)
 	if err != nil {
-		fmt.Println("failed to connect TDengine, err:", err)
-		return
+		log.Fatalln("failed to connect TDengine, err:", err)
 	}
 	defer taos.Close()
 	createStable(taos)
--- a/docs/examples/go/insert/stmt/main.go
+++ b/docs/examples/go/insert/stmt/main.go
@ -5,8 +5,8 @@ import (
 	"time"

 	"github.com/taosdata/driver-go/v3/af"
-	"github.com/taosdata/driver-go/v3/af/param"
 	"github.com/taosdata/driver-go/v3/common"
+	"github.com/taosdata/driver-go/v3/common/param"
 )

 func checkErr(err error, prompt string) {
--- a/docs/examples/go/insert/telnet/main.go
+++ b/docs/examples/go/insert/telnet/main.go
@ -1,7 +1,7 @@
 package main

 import (
-	"fmt"
+	"log"

 	"github.com/taosdata/driver-go/v3/af"
 )
@ -20,7 +20,7 @@ func prepareDatabase(conn *af.Connector) {
 func main() {
 	conn, err := af.Open("localhost", "root", "taosdata", "", 6030)
 	if err != nil {
-		fmt.Println("fail to connect, err:", err)
+		log.Fatalln("fail to connect, err:", err)
 	}
 	defer conn.Close()
 	prepareDatabase(conn)
@ -37,6 +37,6 @@ func main() {

 	err = conn.OpenTSDBInsertTelnetLines(lines)
 	if err != nil {
-		fmt.Println("insert error:", err)
+		log.Fatalln("insert error:", err)
 	}
 }
--- a/docs/examples/go/query/sync/main.go
+++ b/docs/examples/go/query/sync/main.go
@ -2,7 +2,7 @@ package main

 import (
 	"database/sql"
-	"fmt"
+	"log"
 	"time"

 	_ "github.com/taosdata/driver-go/v3/taosRestful"
@ -12,14 +12,12 @@ func main() {
 	var taosDSN = "root:taosdata@http(localhost:6041)/power"
 	taos, err := sql.Open("taosRestful", taosDSN)
 	if err != nil {
-		fmt.Println("failed to connect TDengine, err:", err)
-		return
+		log.Fatalln("failed to connect TDengine, err:", err)
 	}
 	defer taos.Close()
 	rows, err := taos.Query("SELECT ts, current FROM meters LIMIT 2")
 	if err != nil {
-		fmt.Println("failed to select from table, err:", err)
-		return
+		log.Fatalln("failed to select from table, err:", err)
 	}

 	defer rows.Close()
@ -30,9 +28,9 @@ func main() {
 		}
 		err := rows.Scan(&r.ts, &r.current)
 		if err != nil {
-			fmt.Println("scan error:\n", err)
+			log.Fatalln("scan error:\n", err)
 			return
 		}
-		fmt.Println(r.ts, r.current)
+		log.Fatalln(r.ts, r.current)
 	}
 }
--- a/docs/examples/node/nativeexample/async_query_example.js
+++ b/docs/examples/node/nativeexample/async_query_example.js
@ -1,4 +1,4 @@
-const taos = require("td2.0-connector");
+const taos = require("@tdengine/client");
 const conn = taos.connect({ host: "localhost", database: "power" });
 const cursor = conn.cursor();

@ -18,4 +18,3 @@ try {
    conn.close();
  }, 2000);
 }
-// bug here: jira 14506
--- a/docs/examples/node/nativeexample/connect.js
+++ b/docs/examples/node/nativeexample/connect.js
@ -1,13 +1,20 @@
-const taos = require("td2.0-connector");
+const { options, connect } = require("@tdengine/rest");

-var conn = taos.connect({
-  host: "localhost",
-  port: 6030,
-  user: "root",
-  password: "taosdata",
-});
-conn.close();
+async function test() {
+  options.path = "/rest/sql";
+  options.host = "localhost";
+  let conn = connect(options);
+  let cursor = conn.cursor();
+  try {
+    let res = await cursor.query("SELECT server_version()");
+    res.toString();
+  } catch (err) {
+    console.log(err);
+  }
+}
+test();

-// run with: node connect.js
 // output:
-// Successfully connected to TDengine
+// server_version() |
+// ===================
+// 3.0.0.0          |
--- a/docs/examples/node/nativeexample/influxdb_line_example.js
+++ b/docs/examples/node/nativeexample/influxdb_line_example.js
@ -1,4 +1,4 @@
-const taos = require("td2.0-connector");
+const taos = require("@tdengine/client");

 const conn = taos.connect({
  host: "localhost",
--- a/docs/examples/node/nativeexample/insert_example.js
+++ b/docs/examples/node/nativeexample/insert_example.js
@ -1,4 +1,4 @@
-const taos = require("td2.0-connector");
+const taos = require("@tdengine/client");

 const conn = taos.connect({
  host: "localhost",
@ -11,11 +11,11 @@ try {
  cursor.execute(
    "CREATE STABLE meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (location BINARY(64), groupId INT)"
  );
-  var sql = `INSERT INTO power.d1001 USING power.meters TAGS(California.SanFrancisco, 2) VALUES ('2018-10-03 14:38:05.000', 10.30000, 219, 0.31000) ('2018-10-03 14:38:15.000', 12.60000, 218, 0.33000) ('2018-10-03 14:38:16.800', 12.30000, 221, 0.31000)
-power.d1002 USING power.meters TAGS(California.SanFrancisco, 3) VALUES ('2018-10-03 14:38:16.650', 10.30000, 218, 0.25000)
-power.d1003 USING power.meters TAGS(California.LosAngeles, 2) VALUES ('2018-10-03 14:38:05.500', 11.80000, 221, 0.28000) ('2018-10-03 14:38:16.600', 13.40000, 223, 0.29000)
-power.d1004 USING power.meters TAGS(California.LosAngeles, 3) VALUES ('2018-10-03 14:38:05.000', 10.80000, 223, 0.29000) ('2018-10-03 14:38:06.500', 11.50000, 221, 0.35000)`;
-  cursor.execute(sql);
+  var sql = `INSERT INTO power.d1001 USING power.meters TAGS('California.SanFrancisco', 2) VALUES ('2018-10-03 14:38:05.000', 10.30000, 219, 0.31000) ('2018-10-03 14:38:15.000', 12.60000, 218, 0.33000) ('2018-10-03 14:38:16.800', 12.30000, 221, 0.31000)
+power.d1002 USING power.meters TAGS('California.SanFrancisco', 3) VALUES ('2018-10-03 14:38:16.650', 10.30000, 218, 0.25000)
+power.d1003 USING power.meters TAGS('California.LosAngeles', 2) VALUES ('2018-10-03 14:38:05.500', 11.80000, 221, 0.28000) ('2018-10-03 14:38:16.600', 13.40000, 223, 0.29000)
+power.d1004 USING power.meters TAGS('California.LosAngeles', 3) VALUES ('2018-10-03 14:38:05.000', 10.80000, 223, 0.29000) ('2018-10-03 14:38:06.500', 11.50000, 221, 0.35000)`;
+  cursor.execute(sql,{'quiet':false});
 } finally {
  cursor.close();
  conn.close();
--- a/docs/examples/node/nativeexample/multi_bind_example.js
+++ b/docs/examples/node/nativeexample/multi_bind_example.js
@ -1,4 +1,4 @@
-const taos = require("td2.0-connector");
+const taos = require("@tdengine/client");

 const conn = taos.connect({
  host: "localhost",
@ -24,10 +24,10 @@ function insertData() {
  );

  // bind table name and tags
-  let tagBind = new taos.TaosBind(2);
-  tagBind.bindBinary("California.SanFrancisco");
-  tagBind.bindInt(2);
-  cursor.stmtSetTbnameTags("d1001", tagBind.getBind());
+  let tagBind = new taos.TaosMultiBindArr(2);
+  tagBind.multiBindBinary(["California.SanFrancisco"]);
+  tagBind.multiBindInt([2]);
+  cursor.stmtSetTbnameTags("d1001", tagBind.getMultiBindArr());

  // bind values
  let valueBind = new taos.TaosMultiBindArr(4);
--- a/docs/examples/node/nativeexample/opentsdb_json_example.js
+++ b/docs/examples/node/nativeexample/opentsdb_json_example.js
@ -1,4 +1,4 @@
-const taos = require("td2.0-connector");
+const taos = require("@tdengine/client");

 const conn = taos.connect({
  host: "localhost",
--- a/docs/examples/node/nativeexample/opentsdb_telnet_example.js
+++ b/docs/examples/node/nativeexample/opentsdb_telnet_example.js
@ -1,4 +1,4 @@
-const taos = require("td2.0-connector");
+const taos = require("@tdengine/client");

 const conn = taos.connect({
  host: "localhost",
--- a/docs/examples/node/nativeexample/param_bind_example.js
+++ b/docs/examples/node/nativeexample/param_bind_example.js
@ -1,4 +1,4 @@
-const taos = require("td2.0-connector");
+const taos = require("@tdengine/client");

 const conn = taos.connect({
  host: "localhost",
@ -23,25 +23,22 @@ function insertData() {
  );

  // bind table name and tags
-  let tagBind = new taos.TaosBind(2);
-  tagBind.bindBinary("California.SanFrancisco");
-  tagBind.bindInt(2);
-  cursor.stmtSetTbnameTags("d1001", tagBind.getBind());
+  let tagBind = new taos.TaosMultiBindArr(2);
+  tagBind.multiBindBinary(["California.SanFrancisco"]);
+  tagBind.multiBindInt([2]);
+  cursor.stmtSetTbnameTags("d1001", tagBind.getMultiBindArr());

  // bind values
-  let rows = [
-    [1648432611249, 10.3, 219, 0.31],
-    [1648432611749, 12.6, 218, 0.33],
-  ];
-  for (let row of rows) {
-    let valueBind = new taos.TaosBind(4);
-    valueBind.bindTimestamp(row[0]);
-    valueBind.bindFloat(row[1]);
-    valueBind.bindInt(row[2]);
-    valueBind.bindFloat(row[3]);
-    cursor.stmtBindParam(valueBind.getBind());
-    cursor.stmtAddBatch();
-  }
+  let rows = [[1648432611249, 1648432611749], [10.3, 12.6], [219, 218], [0.31, 0.33]];
+
+  let valueBind = new taos.TaosMultiBindArr(4);
+  valueBind.multiBindTimestamp(rows[0]);
+  valueBind.multiBindFloat(rows[1]);
+  valueBind.multiBindInt(rows[2]);
+  valueBind.multiBindFloat(rows[3]);
+  cursor.stmtBindParamBatch(valueBind.getMultiBindArr());
+  cursor.stmtAddBatch();
+

  // execute
  cursor.stmtExecute();
--- a/docs/examples/node/nativeexample/query_example.js
+++ b/docs/examples/node/nativeexample/query_example.js
@ -1,4 +1,4 @@
-const taos = require("td2.0-connector");
+const taos = require("@tdengine/client");

 const conn = taos.connect({ host: "localhost", database: "power" });
 const cursor = conn.cursor();
@ -9,8 +9,6 @@ query.execute().then(function (result) {

 // output:
 // Successfully connected to TDengine
-// Query OK, 2 row(s) in set (0.00317767s)
-
 //            ts             |         current          |
 // =======================================================
 // 2018-10-03 14:38:05.000   | 10.3                     |
--- a/docs/examples/node/nativeexample/subscribe_demo.js
+++ b/docs/examples/node/nativeexample/subscribe_demo.js
@ -1,4 +1,51 @@
-const taos = require("td2.0-connector");
+const taos = require("@tdengine/client");

 const conn = taos.connect({ host: "localhost", database: "power" });
-// 未完成
+var cursor = conn.cursor();
+
+function runConsumer() {
+
+    // create topic 
+    cursor.execute("create topic topic_name_example as select * from meters");
+
+    let consumer = taos.consumer({
+        'group.id': 'tg2',
+        'td.connect.user': 'root',
+        'td.connect.pass': 'taosdata',
+        'msg.with.table.name': 'true',
+        'enable.auto.commit': 'true'
+    });
+    
+    // subscribe the topic just created.
+    consumer.subscribe("topic_name_example");
+
+    // get subscribe topic list
+    let topicList = consumer.subscription();
+    console.log(topicList);
+
+    for (let i = 0; i < 5; i++) {
+        let msg = consumer.consume(100);
+        console.log(msg.topicPartition);
+        console.log(msg.block);
+        console.log(msg.fields)
+        consumer.commit(msg);
+        console.log(`=======consumer ${i} done`)
+    }
+
+    consumer.unsubscribe();
+    consumer.close();
+
+    // drop topic
+    cursor.execute("drop topic topic_name_example");
+}
+
+
+try {
+    runConsumer();
+} finally {
+
+    setTimeout(() => {
+        cursor.close();
+        conn.close();
+    }, 2000);
+}
--- a/docs/examples/node/package.json
+++ b/docs/examples/node/package.json
@ -4,7 +4,7 @@
  "main": "index.js",
  "license": "MIT",
  "dependencies": {
-    "td2.0-connector": "^2.0.12",
-    "td2.0-rest-connector": "^1.0.0"
+    "@tdengine/client": "^3.0.0",
+    "@tdengine/rest": "^3.0.0"
  }
 }
--- a/docs/examples/node/restexample/connect.js
+++ b/docs/examples/node/restexample/connect.js
@ -1,4 +1,4 @@
-const { options, connect } = require("td2.0-rest-connector");
+const { options, connect } = require("@tdengine/rest");

 async function test() {
  options.path = "/rest/sqlt";
@ -17,4 +17,4 @@ test();
 // output:
 // server_version() |
 // ===================
-// 2.4.0.12         |
+// 3.0.0.0          |
--- a/docs/zh/05-get-started/03-package.md
+++ b/docs/zh/05-get-started/03-package.md
@ -11,7 +11,7 @@ import TabItem from "@theme/TabItem";

 :::

-TDengine 开源版本提供 deb 和 rpm 格式安装包，用户可以根据自己的运行环境选择合适的安装包。其中 deb 支持 Debian/Ubuntu 及衍生系统，rpm 支持 CentOS/RHEL/SUSE 及衍生系统。同时我们也为企业用户提供 tar.gz 格式安装包。
+TDengine 开源版本提供 deb 和 rpm 格式安装包，用户可以根据自己的运行环境选择合适的安装包。其中 deb 支持 Debian/Ubuntu 及衍生系统，rpm 支持 CentOS/RHEL/SUSE 及衍生系统。同时我们也为企业用户提供 tar.gz 格式安装包。也支持通过 `apt-get` 工具从线上进行安装。

 ## 安装

@ -293,4 +293,4 @@ taos> select avg(current), max(voltage), min(phase) from test.meters where group

 ```sql
 taos> select avg(current), max(voltage), min(phase) from test.d10 interval(10s);
-```
+```
--- a/docs/zh/07-develop/03-insert-data/_go_stmt.mdx
+++ b/docs/zh/07-develop/03-insert-data/_go_stmt.mdx
@ -3,6 +3,6 @@
 ```

 :::tip
-driver-go 的模块 `github.com/taosdata/driver-go/v2/wrapper` 是 C 接口的底层封装。使用这个模块也可以实现参数绑定写入。
+driver-go 的模块 `github.com/taosdata/driver-go/v3/wrapper` 是 C 接口的底层封装。使用这个模块也可以实现参数绑定写入。

 :::
--- a/docs/zh/07-develop/04-query-data/index.mdx
+++ b/docs/zh/07-develop/04-query-data/index.mdx
@ -25,6 +25,7 @@ TDengine 采用 SQL 作为查询语言。应用程序可以通过 REST API 或
 - 单列、多列数据查询
 - 标签和数值的多种过滤条件：>, <, =, <\>, like 等
 - 聚合结果的分组（Group by）、排序（Order by）、约束输出（Limit/Offset）
+- 时间窗口（Interval）、会话窗口（Session）和状态窗口（State_window）等窗口切分聚合查询
 - 数值列及聚合结果的四则运算
 - 时间戳对齐的连接查询（Join Query: 隐式连接）操作
 - 多种聚合/计算函数: count, max, min, avg, sum, twa, stddev, leastsquares, top, bottom, first, last, percentile, apercentile, last_row, spread, diff 等
@ -40,7 +41,7 @@ taos> select * from d1001 where voltage > 215 order by ts desc limit 2;
 Query OK, 2 row(s) in set (0.001100s)
 ```

-为满足物联网场景的需求，TDengine 支持几个特殊的函数，比如 twa(时间加权平均)，spread (最大值与最小值的差)，last_row(最后一条记录)等，更多与物联网场景相关的函数将添加进来。TDengine 还支持连续查询。
+为满足物联网场景的需求，TDengine 支持几个特殊的函数，比如 twa(时间加权平均)，spread (最大值与最小值的差)，last_row(最后一条记录)等，更多与物联网场景相关的函数将添加进来。

 具体的查询语法请看 [TAOS SQL 的数据查询](/taos-sql/select) 章节。

@ -73,7 +74,7 @@ taos> SELECT count(*), max(current) FROM meters where groupId = 2 and ts > now -
 Query OK, 1 row(s) in set (0.002136s)
 ```

-TDengine 仅容许对属于同一个超级表的表之间进行聚合查询，不同超级表之间的聚合查询不支持。在 [TAOS SQL 的数据查询](/taos-sql/select) 一章，查询类操作都会注明是否支持超级表。
+在 [TAOS SQL 的数据查询](/taos-sql/select) 一章，查询类操作都会注明是否支持超级表。

 ## 降采样查询、插值

--- a/docs/zh/07-develop/07-tmq.md
+++ b/docs/zh/07-develop/07-tmq.md
@ -1,14 +1,20 @@
 ---
-sidebar_label: 消息队列
-description: "数据订阅与推送服务。连续写入到 TDengine 中的时序数据能够被自动推送到订阅客户端。"
-title: 消息队列
+sidebar_label: 数据订阅
+description: "数据订阅与推送服务。写入到 TDengine 中的时序数据能够被自动推送到订阅客户端。"
+title: 数据订阅
 ---

-基于数据天然的时间序列特性，TDengine 的数据写入（insert）与消息系统的数据发布（pub）逻辑上一致，均可视为系统中插入一条带时间戳的新记录。同时，TDengine 在内部严格按照数据时间序列单调递增的方式保存数据。本质上来说，TDengine 中每一张表均可视为一个标准的消息队列。
+为了帮助应用实时获取写入 TDengine 的数据，或者以事件到达顺序处理数据，TDengine提供了类似消息队列产品的数据订阅、消费接口。这样在很多场景下，采用 TDengine 的时序数据处理系统不再需要集成消息队列产品，比如 kafka, 从而简化系统设计的复杂度，降低运营维护成本。

-TDengine 内嵌支持消息订阅与推送服务（下文都简称TMQ）。使用系统提供的 API，用户可使用普通查询语句订阅数据库中的一张或多张表，或整个库。客户端启动订阅后，定时或按需轮询服务器是否有新的记录到达，有新的记录到达就会将结果反馈到客户。
+与 kafka 一样，你需要定义 topic, 但 TDengine 的 topic 是基于一个已经存在的超级表、子表或普通表的查询条件，即一个 SELECT 语句。你可以使用 SQL 对标签、表名、列、表达式等条件进行过滤，以及对数据进行标量函数与 UDF 计算（不包括数据聚合）。与其他消息队列软件相比，这是 TDengine 数据订阅功能的最大的优势，它提供了更大的灵活性，数据的颗粒度可以由应用随时调整，而且数据的过滤与预处理交给 TDengine，而不是应用完成，有效的减少传输的数据量与应用的复杂度。

-TMQ提供了提交机制来保证消息队列的可靠性和正确性。在调用方法上，支持自动提交和手动提交。
+消费者订阅 topic 后，可以实时获得最新的数据。多个消费者可以组成一个消费者组 (consumer group), 一个消费者组里的多个消费者共享消费进度，便于多线程、分布式地消费数据，提高消费速度。但不同消费者组中的消费者即使消费同一个topic, 并不共享消费进度。一个消费者可以订阅多个 topic。如果订阅的是超级表，数据可能会分布在多个不同的 vnode 上，也就是多个 shard 上，这样一个消费组里有多个消费者可以提高消费效率。TDengine 的消息队列提供了消息的ACK机制，在宕机、重启等复杂环境下确保 at least once 消费。
+
+为了实现上述功能，TDengine 会为 WAL (Write-Ahead-Log) 文件自动创建索引以支持快速随机访问，并提供了灵活可配置的文件切换与保留机制：用户可以按需指定 WAL 文件保留的时间以及大小（详见 create database 语句）。通过以上方式将 WAL 改造成了一个保留事件到达顺序的、可持久化的存储引擎（但由于 TSDB 具有远比 WAL 更高的压缩率，我们不推荐保留太长时间，一般来说，不超过几天）。 对于以 topic 形式创建的查询，TDengine 将对接 WAL 而不是 TSDB 作为其存储引擎。在消费时，TDengine 根据当前消费进度从 WAL 直接读取数据，并使用统一的查询引擎实现过滤、变换等操作，将数据推送给消费者。
+
+本文档不对消息队列本身的基础知识做介绍，如果需要了解，请自行搜索。
+
+## 主要数据结构和API

 TMQ 的 API 中，与订阅相关的主要数据结构和API如下：

@ -47,7 +53,9 @@ DLL_EXPORT void           tmq_conf_set_auto_commit_cb(tmq_conf_t *conf, tmq_comm

 这些 API 的文档请见 [C/C++ Connector](/reference/connector/cpp)，下面介绍一下它们的具体用法（超级表和子表结构请参考“数据建模”一节），完整的示例代码可以在 [tmq.c](https://github.com/taosdata/TDengine/blob/3.0/examples/c/tmq.c) 看到。

-一、首先完成建库、建一张超级表和多张子表，并每个子表插入若干条数据记录：
+## 写入数据
+
+首先完成建库、建一张超级表和多张子表操作，然后就可以写入数据了，比如：

 ```sql
 drop database if exists tmqdb;
@ -63,14 +71,15 @@ insert into tmqdb.ctb2 values(now, 2, 2, 'a1')(now+1s, 22, 22, 'a22');
 insert into tmqdb.ctb3 values(now, 3, 3, 'a1')(now+1s, 33, 33, 'a33');
 ```

-二、创建topic：
+## 创建topic：

 ```sql
 create topic topicName as select ts, c1, c2, c3 from tmqdb.stb where c1 > 1;
 ```

-注：TMQ支持多种订阅类型：
-1、列订阅
+TMQ支持多种订阅类型：
+
+### 列订阅

 语法：CREATE TOPIC topic_name as subquery
 通过select语句订阅（包括select *，或select ts, c1等指定列描述订阅，可以带条件过滤、标量函数计算，但不支持聚合函数、不支持时间窗口聚合）
@ -79,25 +88,18 @@ create topic topicName as select ts, c1, c2, c3 from tmqdb.stb where c1 > 1;
 - 被订阅或用于计算的column和tag不可被删除、修改
 - 若发生schema变更，新增的column不出现在结果中

-2、超级表订阅
+### 超级表订阅
 语法：CREATE TOPIC topic_name AS STABLE stbName

- 订阅某超级表的全部数据，schema变更不受限，schema变更后写入的数据将以最新schema返回
- 在tmq的返回消息中schema是块级别的，每块的schema可能不一样
- 列变更后写入的数据若未落盘，将以写入时的schema返回
- 列变更后写入的数据若已落盘，将以落盘时的schema返回
+与select * from stbName订阅的区别是：
+- 不会限制用户的schema变更
+- 返回的是非结构化的数据：返回数据的schema会随之超级表的schema变化而变化
+- 用户对于要处理的每一个数据块都可能有不同的schema，因此，必须重新获取schema
+- 返回数据不带有tag

-3、db订阅
-语法：CREATE TOPIC topic_name AS DATABASE db_name
+## 创建 consumer 以及consumer group

- 订阅某一db的全部数据，schema变更不受限
- 在tmq的返回消息中schema是块级别的，每块的schema可能不一样
- 列变更后写入的数据若未落盘，将以写入时的schema返回
- 列变更后写入的数据若已落盘，将以落盘时的schema返回
-
-三、创建consumer
-
-目前支持的config：
+对于consumer, 目前支持的config包括：

 | 参数名称                     | 参数值                         | 备注                                                   |
 | ---------------------------- | ------------------------------ | ------------------------------------------------------ |
@ -121,7 +123,7 @@ create topic topicName as select ts, c1, c2, c3 from tmqdb.stb where c1 > 1;
  tmq_conf_set(conf, "group.id", "cgrpName");
  tmq_conf_set(conf, "td.connect.user", "root");
  tmq_conf_set(conf, "td.connect.pass", "taosdata");
-  tmq_conf_set(conf, "auto.offset.reset", "earliest");  
+  tmq_conf_set(conf, "auto.offset.reset", "earliest");
  tmq_conf_set(conf, "experimental.snapshot.enable", "true");
  tmq_conf_set(conf, "msg.with.table.name", "true");
  tmq_conf_set_auto_commit_cb(conf, tmq_commit_cb_print, NULL);
@ -131,7 +133,12 @@ create topic topicName as select ts, c1, c2, c3 from tmqdb.stb where c1 > 1;
  return tmq;
 ```

-四、创建订阅主题列表
+上述配置中包括consumer group ID，如果多个 consumer 指定的 consumer group ID一样，则自动形成一个consumer group，共享消费进度。
+
+
+## 创建 topic 列表
+
+单个consumer支持同时订阅多个topic。

 ```sql
  tmq_list_t* topicList = tmq_list_new();
@ -139,9 +146,7 @@ create topic topicName as select ts, c1, c2, c3 from tmqdb.stb where c1 > 1;
  return topicList;
 ```

-单个consumer支持同时订阅多个topic。
-
-五、启动订阅并开始消费
+## 启动订阅并开始消费

 ```sql
  /* 启动订阅 */
@ -151,9 +156,9 @@ create topic topicName as select ts, c1, c2, c3 from tmqdb.stb where c1 > 1;
  /* 循环poll消息 */
  int32_t totalRows = 0;
  int32_t msgCnt = 0;
-  int32_t consumeDelay = 5000;
+  int32_t timeOut = 5000;
  while (running) {
-    TAOS_RES* tmqmsg = tmq_consumer_poll(tmq, consumeDelay);
+    TAOS_RES* tmqmsg = tmq_consumer_poll(tmq, timeOut);
    if (tmqmsg) {
      msgCnt++;
      totalRows += msg_process(tmqmsg);
@ -190,7 +195,7 @@ create topic topicName as select ts, c1, c2, c3 from tmqdb.stb where c1 > 1;
    int32_t*    length      = taos_fetch_lengths(msg);
    int32_t     precision   = taos_result_precision(msg);
    const char* tbName      = tmq_get_table_name(msg);
-	rows++; 
+    rows++; 
    taos_print_row(buf, row, fields, numOfFields);
    printf("row content from %s: %s\n", (tbName != NULL ? tbName : "null table"), buf);
  }
@ -199,7 +204,7 @@ create topic topicName as select ts, c1, c2, c3 from tmqdb.stb where c1 > 1;
 }
 ```

-五、结束消费
+## 结束消费

 ```sql
  /* 取消订阅 */
@ -209,7 +214,7 @@ create topic topicName as select ts, c1, c2, c3 from tmqdb.stb where c1 > 1;
  tmq_consumer_close(tmq);
 ```

-六、删除topic
+## 删除topic

 如果不再需要，可以删除创建topic，但注意：只有没有被订阅的topic才能别删除。

@ -218,7 +223,7 @@ create topic topicName as select ts, c1, c2, c3 from tmqdb.stb where c1 > 1;
  drop topic topicName;
 ```

-七、状态查看
+## 状态查看

 1、topics：查询已经创建的topic

--- a/docs/zh/14-reference/03-connector/node.mdx
+++ b/docs/zh/14-reference/03-connector/node.mdx
@ -15,11 +15,11 @@ import NodeOpenTSDBTelnet from "../../07-develop/03-insert-data/_js_opts_telnet.
 import NodeOpenTSDBJson from "../../07-develop/03-insert-data/_js_opts_json.mdx";
 import NodeQuery from "../../07-develop/04-query-data/_js.mdx";

-`td2.0-connector` 和 `td2.0-rest-connector` 是 TDengine 的官方 Node.js 语言连接器。Node.js 开发人员可以通过它开发可以存取 TDengine 集群数据的应用软件。
+`@tdengine/client` 和 `@tdengine/rest` 是 TDengine 的官方 Node.js 语言连接器。 Node.js 开发人员可以通过它开发可以存取 TDengine 集群数据的应用软件。注意：从 TDengine 3.0 开始 Node.js 原生连接器的包名由 `td2.0-connector` 改名为 `@tdengine/client` 而 rest 连接器的包名由 `td2.0-rest-connector` 改为 `@tdengine/rest`。并且不与 TDengine 2.x 兼容。

-`td2.0-connector` 是**原生连接器**，它通过 TDengine 客户端驱动程序（taosc）连接 TDengine 运行实例，支持数据写入、查询、订阅、schemaless 接口和参数绑定接口等功能。`td2.0-rest-connector` 是 **REST 连接器**，它通过 taosAdapter 提供的 REST 接口连接 TDengine 的运行实例。REST 连接器可以在任何平台运行，但性能略为下降，接口实现的功能特性集合和原生接口有少量不同。
+`@tdengine/client` 是**原生连接器**，它通过 TDengine 客户端驱动程序（taosc）连接 TDengine 运行实例，支持数据写入、查询、订阅、schemaless 接口和参数绑定接口等功能。`@tdengine/rest` 是 **REST 连接器**，它通过 taosAdapter 提供的 REST 接口连接 TDengine 的运行实例。REST 连接器可以在任何平台运行，但性能略为下降，接口实现的功能特性集合和原生接口有少量不同。

-Node.js 连接器源码托管在 [GitHub](https://github.com/taosdata/taos-connector-node)。
+Node.js 连接器源码托管在 [GitHub](https://github.com/taosdata/taos-connector-node/tree/3.0)。

 ## 支持的平台

@ -58,7 +58,7 @@ REST 连接器支持所有能运行 Node.js 的平台。
 <TabItem value="Linux" label="Linux 系统安装依赖工具">

 - `python` (建议`v2.7` , `v3.x.x` 目前还不支持)
- `td2.0-connector` 2.0.6 支持 Node.js LTS v10.9.0 或更高版本, Node.js LTS v12.8.0 或更高版本；2.0.5 及更早版本支持 Node.js LTS v10.x 版本。其他版本可能存在包兼容性的问题
+- `@tdengine/client` 3.0.0 支持 Node.js LTS v10.9.0 或更高版本, Node.js LTS v12.8.0 或更高版本；其他版本可能存在包兼容性的问题
 - `make`
 - C 语言编译器，[GCC](https://gcc.gnu.org) v4.8.5 或更高版本

@ -90,14 +90,14 @@ REST 连接器支持所有能运行 Node.js 的平台。
 <TabItem value="install_native" label="安装原生连接器">

 ```bash
-npm install td2.0-connector
+npm install @tdengine/client
 ```

 </TabItem>
 <TabItem value="install_rest" label="安装 REST 连接器">

 ```bash
-npm i td2.0-rest-connector
+npm install @tdengine/rest
 ```

 </TabItem>
@ -109,13 +109,13 @@ npm i td2.0-rest-connector

 验证方法：

- 新建安装验证目录，例如：`~/tdengine-test`，下载 GitHub 上 [nodejsChecker.js 源代码](https://github.com/taosdata/TDengine/tree/develop/examples/nodejs/nodejsChecker.js)到本地。
+- 新建安装验证目录，例如：`~/tdengine-test`，下载 GitHub 上 [nodejsChecker.js 源代码](https://github.com/taosdata/taos-connector-node/blob/3.0/nodejs/examples/nodejsChecker.js)到本地。

 - 在命令行中执行以下命令。

 ```bash
 npm init -y
-npm install td2.0-connector
+npm install @tdengine/client
 node nodejsChecker.js host=localhost
 ```

@ -128,11 +128,11 @@ node nodejsChecker.js host=localhost
 <Tabs defaultValue="native">
 <TabItem value="native" label="原生连接">

-安装并引用 `td2.0-connector` 包。
+安装并引用 `@tdengine/client` 包。

 ```javascript
 //A cursor also needs to be initialized in order to interact with TDengine from Node.js.
-const taos = require("td2.0-connector");
+const taos = require("@tdengine/client");
 var conn = taos.connect({
  host: "127.0.0.1",
  user: "root",
@ -149,12 +149,12 @@ conn.close();
 </TabItem>
 <TabItem value="rest" label="REST 连接">

-安装并引用 `td2.0-rest-connector` 包。
+安装并引用 `@tdengine/rest` 包。

 ```javascript
 //A cursor also needs to be initialized in order to interact with TDengine from Node.js.
-import { options, connect } from "td2.0-rest-connector";
-options.path = "/rest/sqlt";
+import { options, connect } from "@tdengine/rest";
+options.path = "/rest/sql";
 // set host
 options.host = "localhost";
 // set other options like user/passwd
@ -190,26 +190,23 @@ let cursor = conn.cursor();

 <NodeQuery />

+
 ## 更多示例程序

 | 示例程序                                                                                                                                   | 示例程序描述                           |
 | ------------------------------------------------------------------------------------------------------------------------------------------ | -------------------------------------- |
-| [connection](https://github.com/taosdata/taos-connector-node/tree/develop/nodejs/examples/cursorClose.js)                                  | 建立连接的示例。                       |
-| [stmtBindBatch](https://github.com/taosdata/taos-connector-node/tree/develop/nodejs/examples/stmtBindParamBatchSample.js)                  | 绑定多行参数插入的示例。               |
-| [stmtBind](https://github.com/taosdata/taos-connector-node/tree/develop/nodejs/examples/stmtBindParamSample.js)                            | 一行一行绑定参数插入的示例。           |
-| [stmtBindSingleParamBatch](https://github.com/taosdata/taos-connector-node/tree/develop/nodejs/examples/stmtBindSingleParamBatchSample.js) | 按列绑定参数插入的示例。               |
-| [stmtUseResult](https://github.com/taosdata/taos-connector-node/tree/develop/nodejs/examples/stmtUseResultSample.js)                       | 绑定参数查询的示例。                   |
-| [json tag](https://github.com/taosdata/taos-connector-node/tree/develop/nodejs/examples/testJsonTag.js)                                    | Json tag 的使用示例。                  |
-| [Nanosecond](https://github.com/taosdata/taos-connector-node/tree/develop/nodejs/examples/testNanoseconds.js)                              | 时间戳为纳秒精度的使用的示例。         |
-| [Microsecond](https://github.com/taosdata/taos-connector-node/tree/develop/nodejs/examples/testMicroseconds.js)                            | 时间戳为微秒精度的使用的示例。         |
-| [schemless insert](https://github.com/taosdata/taos-connector-node/tree/develop/nodejs/examples/testSchemalessInsert.js)                   | schemless 插入的示例。                 |
-| [subscribe](https://github.com/taosdata/taos-connector-node/tree/develop/nodejs/examples/testSubscribe.js)                                 | 订阅的使用示例。                       |
-| [asyncQuery](https://github.com/taosdata/taos-connector-node/tree/develop/nodejs/examples/tset.js)                                         | 异步查询的使用示例。                   |
-| [REST](https://github.com/taosdata/taos-connector-node/blob/develop/typescript-rest/example/example.ts)                                    | 使用 REST 连接的 TypeScript 使用示例。 |
+| [basicUse](https://github.com/taosdata/taos-connector-node/blob/3.0/nodejs/examples/queryExample.js)                                  | 基本的使用如如建立连接，执行 SQL 等操作。                       |
+| [stmtBindBatch](https://github.com/taosdata/taos-connector-node/blob/3.0/nodejs/examples/bindParamBatch.js)                  | 绑定多行参数插入的示例。               | |
+| [stmtBindSingleParamBatch](https://github.com/taosdata/taos-connector-node/blob/3.0/nodejs/examples/bindSingleParamBatch.js) | 按列绑定参数插入的示例。               |
+| [stmtQuery](https://github.com/taosdata/taos-connector-node/blob/3.0/nodejs/examples/stmtQuery.js)                       | 绑定参数查询的示例。                   |
+| [schemless insert](https://github.com/taosdata/taos-connector-node/blob/3.0/nodejs/examples/schemaless.js)                   | schemless 插入的示例。                 |
+| [TMQ](https://github.com/taosdata/taos-connector-node/blob/3.0/nodejs/examples/tmq.js)                                 | 订阅的使用示例。                       |
+| [asyncQuery](https://github.com/taosdata/taos-connector-node/blob/3.0/nodejs/examples/asyncQueryExample.js)                                         | 异步查询的使用示例。                   |
+| [REST](https://github.com/taosdata/taos-connector-node/blob/3.0/typescript-rest/example/example.ts)                                    | 使用 REST 连接的 TypeScript 使用示例。 |

 ## 使用限制

-Node.js 连接器 >= v2.0.6 目前支持 node 的版本为：支持 >=v12.8.0 <= v12.9.1 || >=v10.20.0 <= v10.9.0 ；2.0.5 及更早版本支持 v10.x 版本，其他版本可能存在包兼容性的问题。
+native 连接器（`@tdengine/client`） >= v3.0.0 目前支持 node 的版本为：支持 >=v12.8.0 <= v12.9.1 || >=v10.20.0 <= v10.9.0 ；2.0.5 及更早版本支持 v10.x 版本，其他版本可能存在包兼容性的问题。

 ## 其他说明

@ -225,7 +222,7 @@ Node.js 连接器的使用参见[视频教程](https://www.taosdata.com/blog/202

 2. Node.js 版本

-  连接器 >v2.0.6 目前兼容的 Node.js 版本为：>=v10.20.0 <= v10.9.0 || >=v12.8.0 <= v12.9.1
+   原生连接器 `@tdengine/client` 目前兼容的 Node.js 版本为：>=v10.20.0 <= v10.9.0 || >=v12.8.0 <= v12.9.1

 3. "Unable to establish connection"，"Unable to resolve FQDN"

@ -235,18 +232,22 @@ Node.js 连接器的使用参见[视频教程](https://www.taosdata.com/blog/202

 ### 原生连接器

-| td2.0-connector 版本 | 说明                                                             |
-| -------------------- | ---------------------------------------------------------------- |
-| 2.0.12               | 修复 cursor.close() 报错的 bug。                                 |
-| 2.0.11               | 支持绑定参数、json tag、schemaless 接口等功能。                  |
-| 2.0.10               | 支持连接管理，普通查询、连续查询、获取系统信息、订阅功能等功能。 |
-
+| package name     | version | TDengine version    | 说明                                                             |
+|------------------|---------|---------------------|------------------------------------------------------------------|
+| @tdengine/client | 3.0.0   | 3.0.0               | 支持TDengine 3.0 且不与2.x 兼容。                                                          |
+| td2.0-connector  | 2.0.12  | 2.4.x；2.5.x；2.6.x | 修复 cursor.close() 报错的 bug。                                 |
+| td2.0-connector  | 2.0.11  | 2.4.x；2.5.x；2.6.x | 支持绑定参数、json tag、schemaless 接口等功能。                  |
+| td2.0-connector  | 2.0.10  | 2.4.x；2.5.x；2.6.x | 支持连接管理，普通查询、连续查询、获取系统信息、订阅功能等功能。 |
 ### REST 连接器

-| td2.0-rest-connector 版本 | 说明                                                             |
-| ------------------------- | ---------------------------------------------------------------- |
-| 1.0.3                     | 支持连接管理、普通查询、获取系统信息、错误信息、连续查询等功能。 |
+| package name         | version | TDengine version    | 说明                                                                      |
+|----------------------|---------|---------------------|---------------------------------------------------------------------------|
+| @tdengine/rest       | 3.0.0   | 3.0.0               | 支持 TDegnine 3.0，且不与2.x 兼容。                                               |
+| td2.0-rest-connector | 1.0.7   | 2.4.x；2.5.x；2.6.x | 移除默认端口 6041。                                                       |
+| td2.0-rest-connector | 1.0.6   | 2.4.x；2.5.x；2.6.x | 修复create，insert，update，alter 等SQL 执行返回的 affectRows 错误的bug。 |
+| td2.0-rest-connector | 1.0.5   | 2.4.x；2.5.x；2.6.x | 支持云服务 cloud Token；                                                  |
+| td2.0-rest-connector | 1.0.3   | 2.4.x；2.5.x；2.6.x | 支持连接管理、普通查询、获取系统信息、错误信息、连续查询等功能。          |

 ## API 参考

-[API 参考](https://docs.taosdata.com/api/td2.0-connector/)
+[API 参考](https://docs.taosdata.com/api/td2.0-connector/)
--- a/docs/zh/14-reference/11-docker/index.md
+++ b/docs/zh/14-reference/11-docker/index.md
@ -147,7 +147,7 @@ import (
    "fmt"
    "time"

-    _ "github.com/taosdata/driver-go/v2/taosSql"
+    _ "github.com/taosdata/driver-go/v3/taosSql"
 )

 type config struct {
--- a/include/common/tcommon.h
+++ b/include/common/tcommon.h
@ -104,6 +104,7 @@ typedef struct SDataBlockInfo {
  uint32_t    capacity;
  // TODO: optimize and remove following
  int64_t     version;  // used for stream, and need serialization
+  int64_t     ts;       // used for stream, and need serialization
  int32_t     childId;  // used for stream, do not serialize
  EStreamType type;     // used for stream, do not serialize
  STimeWindow calWin;   // used for stream, do not serialize
--- a/include/common/tmsg.h
+++ b/include/common/tmsg.h
@ -2657,6 +2657,34 @@ typedef struct {
  SEpSet  epSet;
 } SVgEpSet;

+typedef struct {
+  int64_t refId;
+  int64_t suid;
+  int8_t  level;
+} SRSmaFetchMsg;
+
+static FORCE_INLINE int32_t tEncodeSRSmaFetchMsg(SEncoder* pCoder, const SRSmaFetchMsg* pReq) {
+  if (tStartEncode(pCoder) < 0) return -1;
+
+  if (tEncodeI64(pCoder, pReq->refId) < 0) return -1;
+  if (tEncodeI64(pCoder, pReq->suid) < 0) return -1;
+  if (tEncodeI8(pCoder, pReq->level) < 0) return -1;
+
+  tEndEncode(pCoder);
+  return 0;
+}
+
+static FORCE_INLINE int32_t tDecodeSRSmaFetchMsg(SDecoder* pCoder, SRSmaFetchMsg* pReq) {
+  if (tStartDecode(pCoder) < 0) return -1;
+
+  if (tDecodeI64(pCoder, &pReq->refId) < 0) return -1;
+  if (tDecodeI64(pCoder, &pReq->suid) < 0) return -1;
+  if (tDecodeI8(pCoder, &pReq->level) < 0) return -1;
+
+  tEndDecode(pCoder);
+  return 0;
+}
+
 typedef struct {
  int8_t         version;       // for compatibility(default 0)
  int8_t         intervalUnit;  // MACRO: TIME_UNIT_XXX
@ -3075,7 +3103,7 @@ typedef struct {
  void*   msg;
 } SBatchRsp;

-static FORCE_INLINE void tFreeSBatchRsp(void *p) {
+static FORCE_INLINE void tFreeSBatchRsp(void* p) {
  if (NULL == p) {
    return;
  }
--- a/include/libs/function/functionMgt.h
+++ b/include/libs/function/functionMgt.h
@ -202,6 +202,7 @@ bool fmIsForbidStreamFunc(int32_t funcId);
 bool fmIsIntervalInterpoFunc(int32_t funcId);
 bool fmIsInterpFunc(int32_t funcId);
 bool fmIsLastRowFunc(int32_t funcId);
+bool fmIsNotNullOutputFunc(int32_t funcId);
 bool fmIsSelectValueFunc(int32_t funcId);
 bool fmIsSystemInfoFunc(int32_t funcId);
 bool fmIsImplicitTsFunc(int32_t funcId);
--- a/include/libs/stream/tstream.h
+++ b/include/libs/stream/tstream.h
@ -17,6 +17,7 @@
 #include "os.h"
 #include "query.h"
 #include "tdatablock.h"
+#include "tdbInt.h"
 #include "tmsg.h"
 #include "tmsgcb.h"
 #include "tqueue.h"
@ -85,6 +86,12 @@ enum {
  TASK_OUTPUT__FETCH,
 };

+enum {
+  STREAM_QUEUE__SUCESS = 1,
+  STREAM_QUEUE__FAILED,
+  STREAM_QUEUE__PROCESSING,
+};
+
 typedef struct {
  int8_t type;
 } SStreamQueueItem;
@ -123,12 +130,6 @@ typedef struct {
  SSDataBlock* pBlock;
 } SStreamTrigger;

-enum {
-  STREAM_QUEUE__SUCESS = 1,
-  STREAM_QUEUE__FAILED,
-  STREAM_QUEUE__PROCESSING,
-};
-
 typedef struct {
  STaosQueue* queue;
  STaosQall*  qall;
@ -233,6 +234,7 @@ typedef struct {
 typedef struct SStreamTask {
  int64_t streamId;
  int32_t taskId;
+  int32_t totalLevel;
  int8_t  taskLevel;
  int8_t  outputType;
  int16_t dispatchMsgType;
@ -458,13 +460,26 @@ int32_t streamProcessRetrieveRsp(SStreamTask* pTask, SStreamRetrieveRsp* pRsp);
 int32_t streamTryExec(SStreamTask* pTask);
 int32_t streamSchedExec(SStreamTask* pTask);

-typedef struct SStreamMeta SStreamMeta;
+typedef int32_t FTaskExpand(void* ahandle, SStreamTask* pTask);

-SStreamMeta* streamMetaOpen();
+typedef struct SStreamMeta {
+  char*        path;
+  TDB*         db;
+  TTB*         pTaskDb;
+  TTB*         pStateDb;
+  SHashObj*    pTasks;
+  void*        ahandle;
+  TXN          txn;
+  FTaskExpand* expandFunc;
+} SStreamMeta;
+
+SStreamMeta* streamMetaOpen(const char* path, void* ahandle, FTaskExpand expandFunc);
 void         streamMetaClose(SStreamMeta* streamMeta);

-int32_t streamMetaAddTask(SStreamMeta* pMeta, SStreamTask* pTask);
-int32_t streamMetaRemoveTask(SStreamMeta* pMeta, int32_t taskId);
+int32_t      streamMetaAddTask(SStreamMeta* pMeta, SStreamTask* pTask);
+int32_t      streamMetaAddSerializedTask(SStreamMeta* pMeta, char* msg, int32_t msgLen);
+int32_t      streamMetaRemoveTask(SStreamMeta* pMeta, int32_t taskId);
+SStreamTask* streamMetaGetTask(SStreamMeta* pMeta, int32_t taskId);

 int32_t streamMetaBegin(SStreamMeta* pMeta);
 int32_t streamMetaCommit(SStreamMeta* pMeta);
--- a/include/libs/transport/trpc.h
+++ b/include/libs/transport/trpc.h
@ -41,12 +41,13 @@ typedef struct {

 typedef struct SRpcHandleInfo {
  // rpc info
-  void    *handle;         // rpc handle returned to app
-  int64_t  refId;          // refid, used by server
-  int32_t  noResp;         // has response or not(default 0, 0: resp, 1: no resp);
-  int32_t  persistHandle;  // persist handle or not
+  void   *handle;         // rpc handle returned to app
+  int64_t refId;          // refid, used by server
+  int8_t  noResp;         // has response or not(default 0, 0: resp, 1: no resp)
+  int8_t  persistHandle;  // persist handle or not
+  int8_t  hasEpSet;
+
  STraceId traceId;
-  int8_t   hasEpSet;

  // app info
  void *ahandle;  // app handle set by client
@ -69,8 +70,9 @@ typedef struct SRpcMsg {
  SRpcHandleInfo info;
 } SRpcMsg;

-typedef void (*RpcCfp)(void *parent, SRpcMsg *, SEpSet *rf);
+typedef void (*RpcCfp)(void *parent, SRpcMsg *, SEpSet *epset);
 typedef bool (*RpcRfp)(int32_t code, tmsg_t msgType);
+typedef bool (*RpcTfp)(int32_t code, tmsg_t msgType);

 typedef struct SRpcInit {
  char     localFqdn[TSDB_FQDN_LEN];
@ -84,12 +86,15 @@ typedef struct SRpcInit {
  // the following is for client app ecurity only
  char *user;  // user name

-  // call back to process incoming msg, code shall be ignored by server app
+  // call back to process incoming msg
  RpcCfp cfp;

-  // user defined retry func
+  // retry not not for particular msg
  RpcRfp rfp;

+  // set up timeout for particular msg
+  RpcTfp tfp;
+
  void *parent;
 } SRpcInit;

--- a/include/os/osDef.h
+++ b/include/os/osDef.h
@ -57,7 +57,7 @@ extern "C" {

 #if defined(WINDOWS)
  char *stpcpy (char *dest, const char *src);
-  char *stpncpy (char *dest, const char *src, size_t n);
+  char *stpncpy (char *dest, const char *src, int n);

  // specific
 #ifndef __COMPAR_FN_T
@ -77,7 +77,7 @@ extern "C" {

  char *     strsep(char **stringp, const char *delim);
  char *     getpass(const char *prefix);
-  char *     strndup(const char *s, size_t n);
+  char *     strndup(const char *s, int n);

  // for send function in tsocket.c
  #define MSG_NOSIGNAL             0
--- a/include/util/taoserror.h
+++ b/include/util/taoserror.h
@ -46,6 +46,7 @@ int32_t* taosGetErrno();
 #define TSDB_CODE_RPC_FQDN_ERROR                TAOS_DEF_ERROR_CODE(0, 0x0015)
 #define TSDB_CODE_RPC_PORT_EADDRINUSE           TAOS_DEF_ERROR_CODE(0, 0x0017)
 #define TSDB_CODE_RPC_BROKEN_LINK               TAOS_DEF_ERROR_CODE(0, 0x0018)
+#define TSDB_CODE_RPC_TIMEOUT                   TAOS_DEF_ERROR_CODE(0, 0x0019)

 //common & util
 #define TSDB_CODE_TIME_UNSYNCED                 TAOS_DEF_ERROR_CODE(0, 0x0013) 
--- a/include/util/tlockfree.h
+++ b/include/util/tlockfree.h
@ -25,9 +25,9 @@ extern "C" {
 // reference counting
 typedef void (*_ref_fn_t)(const void *pObj);

-#define T_REF_DECLARE() \
-  struct {              \
-    int32_t val;        \
+#define T_REF_DECLARE()   \
+  struct {                \
+    volatile int32_t val; \
  } _ref;

 #define T_REF_REGISTER_FUNC(s, e) \
--- a/packaging/release.bat
+++ b/packaging/release.bat
@ -2,61 +2,78 @@

 set internal_dir=%~dp0\..\..\
 set community_dir=%~dp0\..
-cd %community_dir%
-git checkout -- .
-cd %community_dir%\packaging
+set package_dir=%cd%

 :: %1 name %2 version
 if !%1==! GOTO USAGE
 if !%2==! GOTO USAGE
-if %1 == taos GOTO TAOS
-if %1 == power GOTO POWER
-if %1 == tq GOTO TQ
-if %1 == pro GOTO PRO
-if %1 == kh GOTO KH
-if %1 == jh GOTO JH
-GOTO USAGE

-:TAOS
-goto RELEASE
-
-:POWER
-call sed_power.bat %community_dir%
-goto RELEASE
-
-:TQ
-call sed_tq.bat %community_dir%
-goto RELEASE
-
-:PRO
-call sed_pro.bat %community_dir%
-goto RELEASE
-
-:KH
-call sed_kh.bat %community_dir%
-goto RELEASE
-
-:JH
-call sed_jh.bat %community_dir%
-goto RELEASE
-
-:RELEASE
-echo release windows-client-64 for %1, version: %2
-if not exist %internal_dir%\debug\ver-%2-64bit-%1 (
-	md %internal_dir%\debug\ver-%2-64bit-%1
+if "%1" == "cluster" (
+	set work_dir=%internal_dir%
+	set packagServerName_x64=TDengine-enterprise-server-%2-beta-Windows-x64
+	set packagServerName_x86=TDengine-enterprise-server-%2-beta-Windows-x86
+	set packagClientName_x64=TDengine-enterprise-client-%2-beta-Windows-x64
+	set packagClientName_x86=TDengine-enterprise-client-%2-beta-Windows-x86
 ) else (
-	rd /S /Q %internal_dir%\debug\ver-%2-64bit-%1
-	md %internal_dir%\debug\ver-%2-64bit-%1
+	set work_dir=%community_dir%
+	set packagServerName_x64=TDengine-server-%2-Windows-x64
+	set packagServerName_x86=TDengine-server-%2-Windows-x86
+	set packagClientName_x64=TDengine-client-%2-Windows-x64
+	set packagClientName_x86=TDengine-client-%2-Windows-x86
 )
-cd %internal_dir%\debug\ver-%2-64bit-%1
-call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" amd64
-cmake ../../ -G "NMake Makefiles" -DVERNUMBER=%2 -DCPUTYPE=x64
-set CL=/MP4
-nmake install
+
+echo release windows-client for %1, version: %2
+if not exist %work_dir%\debug (
+	md %work_dir%\debug
+)
+if not exist %work_dir%\debug\ver-%2-x64 (
+	md %work_dir%\debug\ver-%2-x64
+) else (
+	rd /S /Q %work_dir%\debug\ver-%2-x64
+	md %work_dir%\debug\ver-%2-x64
+)
+if not exist %work_dir%\debug\ver-%2-x86 (
+	md %work_dir%\debug\ver-%2-x86
+) else (
+	rd /S /Q %work_dir%\debug\ver-%2-x86
+	md %work_dir%\debug\ver-%2-x86
+)
+cd %work_dir%\debug\ver-%2-x64
+call vcvarsall.bat x64
+cmake ../../ -G "NMake Makefiles JOM" -DCMAKE_MAKE_PROGRAM=jom -DBUILD_TOOLS=true -DBUILD_HTTP=false -DVERNUMBER=%2 -DCPUTYPE=x64
+cmake --build .
+rd /s /Q C:\TDengine
+cmake --install .
+if not %errorlevel% == 0  ( call :RUNFAILED build x64 failed & exit /b 1)
+cd %package_dir%
+iscc /DMyAppInstallName="%packagServerName_x64%" /DMyAppVersion="%2" /DMyAppExcludeSource="" tools\tdengine.iss /O..\release
+if not %errorlevel% == 0  ( call :RUNFAILED package %packagServerName_x64% failed & exit /b 1)
+iscc /DMyAppInstallName="%packagClientName_x64%" /DMyAppVersion="%2" /DMyAppExcludeSource="taosd.exe" tools\tdengine.iss /O..\release
+if not %errorlevel% == 0  ( call :RUNFAILED package %packagClientName_x64% failed & exit /b 1)
+
+cd %work_dir%\debug\ver-%2-x86
+call vcvarsall.bat x86
+cmake ../../ -G "NMake Makefiles JOM" -DCMAKE_MAKE_PROGRAM=jom -DBUILD_TOOLS=true -DBUILD_HTTP=false -DVERNUMBER=%2 -DCPUTYPE=x86
+cmake --build .
+rd /s /Q C:\TDengine
+cmake --install .
+if not %errorlevel% == 0  ( call :RUNFAILED build x86 failed & exit /b 1)
+cd %package_dir%
+iscc /DMyAppInstallName="%packagServerName_x86%" /DMyAppVersion="%2" /DMyAppExcludeSource="" tools\tdengine.iss /O..\release
+if not %errorlevel% == 0  ( call :RUNFAILED package %packagServerName_x86% failed & exit /b 1)
+iscc /DMyAppInstallName="%packagClientName_x86%" /DMyAppVersion="%2" /DMyAppExcludeSource="taosd.exe" tools\tdengine.iss /O..\release
+if not %errorlevel% == 0  ( call :RUNFAILED package %packagClientName_x86% failed & exit /b 1)
+
 goto EXIT0

 :USAGE
-echo Usage: release.bat $productName $version
+echo Usage: release.bat $verMode $version
 goto EXIT0

-:EXIT0
+:EXIT0
+exit /b
+
+:RUNFAILED
+echo %*
+cd %package_dir%
+goto :eof
--- a/packaging/release.sh
+++ b/packaging/release.sh
@ -26,7 +26,7 @@ soMode=dynamic  # [static | dynamic]
 dbName=taos     # [taos | ...]
 allocator=glibc # [glibc | jemalloc]
 verNumber=""
-verNumberComp="2.0.0.0"
+verNumberComp="3.0.0.0"
 httpdBuild=false

 while getopts "hv:V:c:o:l:s:d:a:n:m:H:" arg; do
@ -216,7 +216,7 @@ else
 fi

 # check support cpu type
-if [[ "$cpuType" == "x64" ]] || [[ "$cpuType" == "aarch64" ]] || [[ "$cpuType" == "aarch32" ]] || [[ "$cpuType" == "mips64" ]]; then
+if [[ "$cpuType" == "x64" ]] || [[ "$cpuType" == "aarch64" ]] || [[ "$cpuType" == "aarch32" ]] || [[ "$cpuType" == "arm64" ]] || [[ "$cpuType" == "arm32" ]] || [[ "$cpuType" == "mips64" ]]; then
  if [ "$verMode" != "cluster" ]; then
    # community-version compile
    cmake ../ -DCPUTYPE=${cpuType} -DOSTYPE=${osType} -DSOMODE=${soMode} -DDBNAME=${dbName} -DVERTYPE=${verType} -DVERDATE="${build_time}" -DGITINFO=${gitinfo} -DGITINFOI=${gitinfoOfInternal} -DVERNUMBER=${verNumber} -DVERCOMPATIBLE=${verNumberComp} -DPAGMODE=${pagMode} -DBUILD_HTTP=${BUILD_HTTP} -DBUILD_TOOLS=${BUILD_TOOLS} ${allocator_macro}
--- a/packaging/tools/favicon.ico
+++ b/packaging/tools/favicon.ico
--- a/packaging/tools/install.sh
+++ b/packaging/tools/install.sh
@ -30,7 +30,6 @@ configDir="/etc/taos"
 installDir="/usr/local/taos"
 adapterName="taosadapter"
 benchmarkName="taosBenchmark"
-tmqName="tmq_sim"
 dumpName="taosdump"
 demoName="taosdemo"

--- a/packaging/tools/makepkg.sh
+++ b/packaging/tools/makepkg.sh
@ -60,7 +60,7 @@ if [ "$pagMode" == "lite" ]; then
  strip ${build_dir}/bin/${serverName}
  strip ${build_dir}/bin/${clientName}
  # lite version doesn't include taosadapter,  which will lead to no restful interface
-  bin_files="${build_dir}/bin/${serverName} ${build_dir}/bin/${clientName} ${script_dir}/remove.sh ${script_dir}/startPre.sh ${build_dir}/bin/taosBenchmark  ${build_dir}/bin/tmq_sim"
+  bin_files="${build_dir}/bin/${serverName} ${build_dir}/bin/${clientName} ${script_dir}/remove.sh ${script_dir}/startPre.sh ${build_dir}/bin/taosBenchmark "
  taostools_bin_files=""
 else

@ -78,7 +78,6 @@ else

  taostools_bin_files=" ${build_dir}/bin/taosdump \
      ${build_dir}/bin/taosBenchmark \
-      ${build_dir}/bin/tmq_sim \
      ${build_dir}/bin/TDinsight.sh \
      $tdinsight_caches"

--- a/packaging/tools/taos.bat
+++ b/packaging/tools/taos.bat
@ -0,0 +1,6 @@
+@echo off
+cd C:\TDengine
+if not "%1" == "" (
+    %1 --help 
+    @cmd /k
+)
--- a/packaging/tools/tdengine.iss
+++ b/packaging/tools/tdengine.iss
@ -0,0 +1,81 @@
+#define MyAppName "TDengine"
+#define MyAppPublisher "taosdata"
+#define MyAppURL "http://www.taosdata.com/"
+#define MyAppBeforeInstallTxt "windows_before_install.txt"
+#define MyAppIco "favicon.ico"
+#define MyAppInstallDir "C:\TDengine"
+#define MyAppOutputDir "./"
+#define MyAppSourceDir "C:\TDengine"
+;#define MyAppAllFile "\*"
+#define MyAppCfgName "\cfg\*"
+#define MyAppDriverName "\driver\*"
+#define MyAppConnectorName "\connector\*"
+#define MyAppExamplesName "\examples\*"
+#define MyAppIncludeName "\include\*"
+#define MyAppExeName "\*.exe"
+#define MyAppTaosExeName "\taos.bat"
+#define MyAppTaosdemoExeName "\taosBenchmark.exe"
+#define MyAppDLLName "\driver\taos.dll"
+;#define MyAppVersion "3.0"
+;#define MyAppInstallName "TDengine"
+
+[Setup]
+VersionInfoVersion={#MyAppVersion}
+AppId={{A0F7A93C-79C4-485D-B2B8-F0D03DF42FAB}
+AppName={#MyAppName}
+AppVersion={#MyAppVersion}
+;AppVerName={#MyAppName} {#MyAppVersion}
+AppPublisher={#MyAppPublisher}
+AppPublisherURL={#MyAppURL}
+AppSupportURL={#MyAppURL}
+AppUpdatesURL={#MyAppURL}
+DefaultDirName={#MyAppInstallDir}
+DefaultGroupName={#MyAppName}
+DisableProgramGroupPage=yes
+InfoBeforeFile={#MyAppBeforeInstallTxt}
+OutputDir={#MyAppOutputDir}
+OutputBaseFilename={#MyAppInstallName}
+SetupIconFile={#MyAppIco}
+Compression=lzma
+SolidCompression=yes
+DisableDirPage=yes
+Uninstallable=yes
+
+[Languages]
+Name: "chinesesimp"; MessagesFile: "compiler:Default.isl"
+;Name: "english"; MessagesFile: "compiler:Languages\English.isl"
+
+[Files]
+;Source: {#MyAppSourceDir}{#MyAppAllFile}; DestDir: "{app}"; Flags: igNoreversion recursesubdirs createallsubdirs 
+Source: taos.bat; DestDir: "{app}\include"; Flags: igNoreversion;
+;Source: taosdemo.png; DestDir: "{app}\include"; Flags: igNoreversion;
+;Source: taosShell.png; DestDir: "{app}\include"; Flags: igNoreversion;
+Source: favicon.ico; DestDir: "{app}\include"; Flags: igNoreversion;
+Source: {#MyAppSourceDir}{#MyAppDLLName}; DestDir: "{win}\System32"; Flags: igNoreversion;
+Source: {#MyAppSourceDir}{#MyAppCfgName}; DestDir: "{app}\cfg"; Flags: igNoreversion recursesubdirs createallsubdirs onlyifdoesntexist uninsneveruninstall
+Source: {#MyAppSourceDir}{#MyAppDriverName}; DestDir: "{app}\driver"; Flags: igNoreversion recursesubdirs createallsubdirs
+;Source: {#MyAppSourceDir}{#MyAppConnectorName}; DestDir: "{app}\connector"; Flags: igNoreversion recursesubdirs createallsubdirs
+;Source: {#MyAppSourceDir}{#MyAppExamplesName}; DestDir: "{app}\examples"; Flags: igNoreversion recursesubdirs createallsubdirs
+Source: {#MyAppSourceDir}{#MyAppIncludeName}; DestDir: "{app}\include"; Flags: igNoreversion recursesubdirs createallsubdirs
+Source: {#MyAppSourceDir}{#MyAppExeName}; DestDir: "{app}"; Excludes: {#MyAppExcludeSource} ; Flags: igNoreversion recursesubdirs createallsubdirs
+Source: {#MyAppSourceDir}{#MyAppTaosdemoExeName}; DestDir: "{app}"; Flags: igNoreversion recursesubdirs createallsubdirs
+
+[UninstallDelete]
+Name: {app}\driver; Type: filesandordirs 
+Name: {app}\connector; Type: filesandordirs
+Name: {app}\examples; Type: filesandordirs
+Name: {app}\include; Type: filesandordirs
+
+[Tasks]
+Name: "desktopicon";Description: "{cm:CreateDesktopIcon}"; GroupDescription:"{cm:AdditionalIcons}"; Flags: checkablealone
+
+[Icons]
+Name:"{group}\Taos Shell"; Filename: "{app}\include\{#MyAppTaosExeName}" ; Parameters: "taos.exe" ; IconFilename: "{app}\include\{#MyAppIco}" 
+Name:"{group}\Open TDengine Directory"; Filename: "{app}\" 
+Name:"{group}\Taosdemo"; Filename: "{app}\include\{#MyAppTaosExeName}" ; Parameters: "taosdemo.exe" ; IconFilename: "{app}\include\{#MyAppIco}" 
+Name: "{group}\{cm:UninstallProgram,{#MyAppName}}"; Filename: "{uninstallexe}" ; IconFilename: "{app}\include\{#MyAppIco}" 
+Name:"{commondesktop}\Taos Shell"; Filename: "{app}\include\{#MyAppTaosExeName}" ; Parameters: "taos.exe" ; Tasks: desktopicon; WorkingDir: "{app}" ; IconFilename: "{app}\include\{#MyAppIco}" 
+
+
+[Messages]
+ConfirmUninstall=Do you really want to uninstall TDengine from your computer?%n%nPress [Y] to completely delete %1 and all its components;%nPress [N] to keep the software on your computer.
--- a/packaging/tools/windows_before_install.txt
+++ b/packaging/tools/windows_before_install.txt
@ -0,0 +1,3 @@
+TDengine is a high-efficient, scalable, high-available distributed time-series database, which makes a lot of optimizations on inserting and querying data, which is far more efficient than normal regular databases. So TDengine can meet the high requirements of IOT and other areas on storing and querying a large amount of data. 
+
+TDengine will be installed under C:\TDengine, users can modify configuration file C:\TDengine\cfg\taos.cfg, set the log file path or other parameters.
--- a/source/client/src/clientEnv.c
+++ b/source/client/src/clientEnv.c
@ -60,7 +60,7 @@ static int32_t registerRequest(SRequestObj *pRequest, STscObj *pTscObj) {
 }

 static void deregisterRequest(SRequestObj *pRequest) {
-  const static int64_t SLOW_QUERY_INTERVAL = 3000000L; // todo configurable
+  const static int64_t SLOW_QUERY_INTERVAL = 3000000L;  // todo configurable
  assert(pRequest != NULL);

  STscObj            *pTscObj = pRequest->pTscObj;
@ -77,13 +77,13 @@ static void deregisterRequest(SRequestObj *pRequest) {
  if (QUERY_NODE_VNODE_MODIF_STMT == pRequest->stmtType) {
    atomic_add_fetch_64((int64_t *)&pActivity->insertElapsedTime, duration);
  } else if (QUERY_NODE_SELECT_STMT == pRequest->stmtType) {
-    atomic_add_fetch_64((int64_t *)&pActivity->queryElapsedTime, duration);           
+    atomic_add_fetch_64((int64_t *)&pActivity->queryElapsedTime, duration);
  }
-  
+
  if (duration >= SLOW_QUERY_INTERVAL) {
    atomic_add_fetch_64((int64_t *)&pActivity->numOfSlowQueries, 1);
  }
-  
+
  releaseTscObj(pTscObj->id);
 }

@ -109,6 +109,14 @@ static bool clientRpcRfp(int32_t code, tmsg_t msgType) {
  }
 }

+// start timer for particular msgType
+static bool clientRpcTfp(int32_t code, tmsg_t msgType) {
+  if (msgType == TDMT_VND_SUBMIT || msgType == TDMT_VND_CREATE_TABLE) {
+    return true;
+  }
+  return false;
+}
+
 // TODO refactor
 void *openTransporter(const char *user, const char *auth, int32_t numOfThread) {
  SRpcInit rpcInit;
@ -118,6 +126,7 @@ void *openTransporter(const char *user, const char *auth, int32_t numOfThread) {
  rpcInit.numOfThreads = numOfThread;
  rpcInit.cfp = processMsgFromServer;
  rpcInit.rfp = clientRpcRfp;
+  rpcInit.tfp = clientRpcTfp;
  rpcInit.sessions = 1024;
  rpcInit.connType = TAOS_CONN_CLIENT;
  rpcInit.user = (char *)user;
@ -375,7 +384,7 @@ void taos_init_imp(void) {
  initQueryModuleMsgHandle();

  taosConvInit();
-  
+
  rpcInit();

  SCatalogCfg cfg = {.maxDBCacheNum = 100, .maxTblCacheNum = 100};
--- a/source/client/src/clientHb.c
+++ b/source/client/src/clientHb.c
@ -286,6 +286,7 @@ static int32_t hbAsyncCallBack(void *param, SDataBuf *pMsg, int32_t code) {
  if (pInst == NULL || NULL == *pInst) {
    taosThreadMutexUnlock(&appInfo.mutex);
    tscError("cluster not exist, key:%s", key);
+    taosMemoryFree(pMsg->pData);
    tFreeClientHbBatchRsp(&pRsp);
    return -1;
  }
--- a/source/client/src/tmq.c
+++ b/source/client/src/tmq.c
@ -1007,7 +1007,7 @@ int32_t tmqPollCb(void* param, SDataBuf* pMsg, int32_t code) {
  taosMemoryFree(pParam);
  if (code != 0) {
    tscWarn("msg discard from vgId:%d, epoch %d, code:%x", vgId, epoch, code);
-    if (pMsg->pData) taosMemoryFree(pMsg->pData);
+    if (pMsg->pData) taosMemoryFreeClear(pMsg->pData);
    if (code == TSDB_CODE_TQ_NO_COMMITTED_OFFSET) {
      SMqPollRspWrapper* pRspWrapper = taosAllocateQitem(sizeof(SMqPollRspWrapper), DEF_QITEM);
      if (pRspWrapper == NULL) {
@ -1699,7 +1699,8 @@ int32_t tmq_consumer_close(tmq_t* tmq) {

    tmq_list_destroy(lst);

-    return rsp;
+    /*return rsp;*/
+    return 0;
  }
  // TODO: free resources
  return 0;
--- a/source/common/src/systable.c
+++ b/source/common/src/systable.c
@ -16,15 +16,15 @@
 #include "systable.h"
 #include "taos.h"
 #include "tdef.h"
-#include "types.h"
 #include "tgrant.h"
+#include "types.h"

 #define SYSTABLE_SCH_TABLE_NAME_LEN ((TSDB_TABLE_NAME_LEN - 1) + VARSTR_HEADER_SIZE)
 #define SYSTABLE_SCH_DB_NAME_LEN    ((TSDB_DB_NAME_LEN - 1) + VARSTR_HEADER_SIZE)
 #define SYSTABLE_SCH_COL_NAME_LEN   ((TSDB_COL_NAME_LEN - 1) + VARSTR_HEADER_SIZE)

 static const SSysDbTableSchema dnodesSchema[] = {
-    {.name = "id", .bytes = 2, .type = TSDB_DATA_TYPE_SMALLINT},
+    {.name = "id", .bytes = 4, .type = TSDB_DATA_TYPE_SMALLINT},
    {.name = "endpoint", .bytes = TSDB_EP_LEN + VARSTR_HEADER_SIZE, .type = TSDB_DATA_TYPE_VARCHAR},
    {.name = "vnodes", .bytes = 2, .type = TSDB_DATA_TYPE_SMALLINT},
    {.name = "support_vnodes", .bytes = 2, .type = TSDB_DATA_TYPE_SMALLINT},
@ -66,7 +66,7 @@ static const SSysDbTableSchema bnodesSchema[] = {
 };

 static const SSysDbTableSchema clusterSchema[] = {
-    {.name = "id", .bytes = 8, .type = TSDB_DATA_TYPE_BIGINT},
+    {.name = "id", .bytes = 4, .type = TSDB_DATA_TYPE_BIGINT},
    {.name = "name", .bytes = TSDB_CLUSTER_ID_LEN + VARSTR_HEADER_SIZE, .type = TSDB_DATA_TYPE_VARCHAR},
    {.name = "create_time", .bytes = 8, .type = TSDB_DATA_TYPE_TIMESTAMP},
 };
@ -97,7 +97,7 @@ static const SSysDbTableSchema userDBSchema[] = {
    {.name = "wal_retention_period", .bytes = 4, .type = TSDB_DATA_TYPE_INT},
    {.name = "wal_retention_size", .bytes = 8, .type = TSDB_DATA_TYPE_BIGINT},
    {.name = "wal_roll_period", .bytes = 4, .type = TSDB_DATA_TYPE_INT},
-    {.name = "wal_seg_size", .bytes = 8, .type = TSDB_DATA_TYPE_BIGINT},
+    {.name = "wal_segment_size", .bytes = 8, .type = TSDB_DATA_TYPE_BIGINT},
 };

 static const SSysDbTableSchema userFuncSchema[] = {
@ -243,8 +243,8 @@ static const SSysTableMeta infosMeta[] = {
    {TSDB_INS_TABLE_MNODES, mnodesSchema, tListLen(mnodesSchema)},
    {TSDB_INS_TABLE_MODULES, modulesSchema, tListLen(modulesSchema)},
    {TSDB_INS_TABLE_QNODES, qnodesSchema, tListLen(qnodesSchema)},
-//    {TSDB_INS_TABLE_SNODES, snodesSchema, tListLen(snodesSchema)},
-//    {TSDB_INS_TABLE_BNODES, bnodesSchema, tListLen(bnodesSchema)},
+    //    {TSDB_INS_TABLE_SNODES, snodesSchema, tListLen(snodesSchema)},
+    //    {TSDB_INS_TABLE_BNODES, bnodesSchema, tListLen(bnodesSchema)},
    {TSDB_INS_TABLE_CLUSTER, clusterSchema, tListLen(clusterSchema)},
    {TSDB_INS_TABLE_DATABASES, userDBSchema, tListLen(userDBSchema)},
    {TSDB_INS_TABLE_FUNCTIONS, userFuncSchema, tListLen(userFuncSchema)},
@ -354,11 +354,19 @@ static const SSysTableMeta perfsMeta[] = {
    {TSDB_PERFS_TABLE_APPS, appSchema, tListLen(appSchema)}};

 void getInfosDbMeta(const SSysTableMeta** pInfosTableMeta, size_t* size) {
-  *pInfosTableMeta = infosMeta;
-  *size = tListLen(infosMeta);
+  if (pInfosTableMeta) {
+    *pInfosTableMeta = infosMeta;
+  }
+  if (size) {
+    *size = tListLen(infosMeta);
+  }
 }

 void getPerfDbMeta(const SSysTableMeta** pPerfsTableMeta, size_t* size) {
-  *pPerfsTableMeta = perfsMeta;
-  *size = tListLen(perfsMeta);
+  if (pPerfsTableMeta) {
+    *pPerfsTableMeta = perfsMeta;
+  }
+  if (size) {
+    *size = tListLen(perfsMeta);
+  }
 }
--- a/source/common/src/tglobal.c
+++ b/source/common/src/tglobal.c
@ -401,7 +401,8 @@ static int32_t taosAddServerCfg(SConfig *pCfg) {
  tsNumOfVnodeWriteThreads = TMAX(tsNumOfVnodeWriteThreads, 1);
  if (cfgAddInt32(pCfg, "numOfVnodeWriteThreads", tsNumOfVnodeWriteThreads, 1, 1024, 0) != 0) return -1;

-  tsNumOfVnodeSyncThreads = tsNumOfCores;
+  // tsNumOfVnodeSyncThreads = tsNumOfCores;
+  tsNumOfVnodeSyncThreads = 32;
  tsNumOfVnodeSyncThreads = TMAX(tsNumOfVnodeSyncThreads, 1);
  if (cfgAddInt32(pCfg, "numOfVnodeSyncThreads", tsNumOfVnodeSyncThreads, 1, 1024, 0) != 0) return -1;

--- a/source/dnode/mnode/impl/inc/mndDef.h
+++ b/source/dnode/mnode/impl/inc/mndDef.h
@ -604,11 +604,11 @@ typedef struct {
  int64_t createTime;
  int64_t updateTime;
  int32_t version;
+  int32_t totalLevel;
  int64_t smaId;  // 0 for unused
  // info
  int64_t uid;
  int8_t  status;
-  int8_t  isDistributed;
  // config
  int8_t  igExpired;
  int8_t  trigger;
@ -647,7 +647,6 @@ typedef struct {
 typedef struct {
  int64_t uid;
  int64_t streamId;
-  int8_t  isDistributed;
  int8_t  status;
  int8_t  stage;
 } SStreamRecoverObj;
--- a/source/dnode/mnode/impl/src/mndDb.c
+++ b/source/dnode/mnode/impl/src/mndDb.c
@ -1691,13 +1691,17 @@ static int32_t mndRetrieveDbs(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *pBloc
  if (!pShow->sysDbRsp) {
    SDbObj infoschemaDb = {0};
    setInformationSchemaDbCfg(&infoschemaDb);
-    dumpDbInfoData(pBlock, &infoschemaDb, pShow, numOfRows, 14, true, 0, 1);
+    size_t numOfTables = 0;
+    getInfosDbMeta(NULL, &numOfTables);
+    dumpDbInfoData(pBlock, &infoschemaDb, pShow, numOfRows, numOfTables, true, 0, 1);

    numOfRows += 1;

    SDbObj perfschemaDb = {0};
    setPerfSchemaDbCfg(&perfschemaDb);
-    dumpDbInfoData(pBlock, &perfschemaDb, pShow, numOfRows, 3, true, 0, 1);
+    numOfTables = 0;
+    getPerfDbMeta(NULL, &numOfTables);
+    dumpDbInfoData(pBlock, &perfschemaDb, pShow, numOfRows, numOfTables, true, 0, 1);

    numOfRows += 1;
    pShow->sysDbRsp = true;
--- a/source/dnode/mnode/impl/src/mndDef.c
+++ b/source/dnode/mnode/impl/src/mndDef.c
@ -23,11 +23,11 @@ int32_t tEncodeSStreamObj(SEncoder *pEncoder, const SStreamObj *pObj) {
  if (tEncodeI64(pEncoder, pObj->createTime) < 0) return -1;
  if (tEncodeI64(pEncoder, pObj->updateTime) < 0) return -1;
  if (tEncodeI32(pEncoder, pObj->version) < 0) return -1;
+  if (tEncodeI32(pEncoder, pObj->totalLevel) < 0) return -1;
  if (tEncodeI64(pEncoder, pObj->smaId) < 0) return -1;

  if (tEncodeI64(pEncoder, pObj->uid) < 0) return -1;
  if (tEncodeI8(pEncoder, pObj->status) < 0) return -1;
-  if (tEncodeI8(pEncoder, pObj->isDistributed) < 0) return -1;

  if (tEncodeI8(pEncoder, pObj->igExpired) < 0) return -1;
  if (tEncodeI8(pEncoder, pObj->trigger) < 0) return -1;
@ -69,11 +69,11 @@ int32_t tDecodeSStreamObj(SDecoder *pDecoder, SStreamObj *pObj) {
  if (tDecodeI64(pDecoder, &pObj->createTime) < 0) return -1;
  if (tDecodeI64(pDecoder, &pObj->updateTime) < 0) return -1;
  if (tDecodeI32(pDecoder, &pObj->version) < 0) return -1;
+  if (tDecodeI32(pDecoder, &pObj->totalLevel) < 0) return -1;
  if (tDecodeI64(pDecoder, &pObj->smaId) < 0) return -1;

  if (tDecodeI64(pDecoder, &pObj->uid) < 0) return -1;
  if (tDecodeI8(pDecoder, &pObj->status) < 0) return -1;
-  if (tDecodeI8(pDecoder, &pObj->isDistributed) < 0) return -1;

  if (tDecodeI8(pDecoder, &pObj->igExpired) < 0) return -1;
  if (tDecodeI8(pDecoder, &pObj->trigger) < 0) return -1;
--- a/source/dnode/mnode/impl/src/mndScheduler.c
+++ b/source/dnode/mnode/impl/src/mndScheduler.c
@ -307,10 +307,9 @@ int32_t mndScheduleStream(SMnode* pMnode, SStreamObj* pStream) {
    terrno = TSDB_CODE_QRY_INVALID_INPUT;
    return -1;
  }
-  int32_t totLevel = LIST_LENGTH(pPlan->pSubplans);
-  ASSERT(totLevel <= 2);
-  pStream->tasks = taosArrayInit(totLevel, sizeof(void*));
-  pStream->isDistributed = totLevel == 2;
+  int32_t planTotLevel = LIST_LENGTH(pPlan->pSubplans);
+  ASSERT(planTotLevel <= 2);
+  pStream->tasks = taosArrayInit(planTotLevel, sizeof(void*));

  bool    hasExtraSink = false;
  bool    externalTargetDB = strcmp(pStream->sourceDb, pStream->targetDb) != 0;
@ -320,7 +319,7 @@ int32_t mndScheduleStream(SMnode* pMnode, SStreamObj* pStream) {

  bool multiTarget = pDbObj->cfg.numOfVgroups > 1;

-  if (totLevel == 2 || externalTargetDB || multiTarget) {
+  if (planTotLevel == 2 || externalTargetDB || multiTarget) {
    /*if (true) {*/
    SArray* taskOneLevel = taosArrayInit(0, sizeof(void*));
    taosArrayPush(pStream->tasks, &taskOneLevel);
@ -338,8 +337,9 @@ int32_t mndScheduleStream(SMnode* pMnode, SStreamObj* pStream) {
      }
    }
  }
+  pStream->totalLevel = planTotLevel + hasExtraSink;

-  if (totLevel > 1) {
+  if (planTotLevel > 1) {
    SStreamTask* pInnerTask;
    // inner level
    {
@ -371,13 +371,6 @@ int32_t mndScheduleStream(SMnode* pMnode, SStreamObj* pStream) {
        return -1;
      }

-#if 0
-      SDbObj* pSourceDb = mndAcquireDb(pMnode, pStream->sourceDb);
-      ASSERT(pDbObj != NULL);
-      sdbRelease(pSdb, pSourceDb);
-      pInnerTask->numOfVgroups = pSourceDb->cfg.numOfVgroups;
-#endif
-
      if (tsSchedStreamToSnode) {
        SSnodeObj* pSnode = mndSchedFetchOneSnode(pMnode);
        if (pSnode == NULL) {
@ -464,7 +457,7 @@ int32_t mndScheduleStream(SMnode* pMnode, SStreamObj* pStream) {
    }
  }

-  if (totLevel == 1) {
+  if (planTotLevel == 1) {
    SArray* taskOneLevel = taosArrayInit(0, sizeof(void*));
    taosArrayPush(pStream->tasks, &taskOneLevel);

--- a/source/dnode/mnode/impl/src/mndSma.c
+++ b/source/dnode/mnode/impl/src/mndSma.c
@ -489,7 +489,7 @@ static int32_t mndCreateSma(SMnode *pMnode, SRpcMsg *pReq, SMCreateSmaReq *pCrea
  smaObj.uid = mndGenerateUid(pCreate->name, TSDB_TABLE_FNAME_LEN);
  ASSERT(smaObj.uid != 0);
  char resultTbName[TSDB_TABLE_FNAME_LEN + 16] = {0};
-  snprintf(resultTbName, TSDB_TABLE_FNAME_LEN + 16, "td.tsma.rst.tb.%s", pCreate->name);
+  snprintf(resultTbName, TSDB_TABLE_FNAME_LEN + 16, "%s_td_tsma_rst_tb",pCreate->name);
  memcpy(smaObj.dstTbName, resultTbName, TSDB_TABLE_FNAME_LEN);
  smaObj.dstTbUid = mndGenerateUid(smaObj.dstTbName, TSDB_TABLE_FNAME_LEN);
  smaObj.stbUid = pStb->uid;
@ -603,6 +603,9 @@ static int32_t mndCreateSma(SMnode *pMnode, SRpcMsg *pReq, SMCreateSmaReq *pCrea
  if (mndPersistStream(pMnode, pTrans, &streamObj) != 0) goto _OVER;
  if (mndTransPrepare(pMnode, pTrans) != 0) goto _OVER;

+  mDebug("mndSma: create sma index %s %" PRIi64 " on stb:%" PRIi64 ", dstSuid:%" PRIi64 " dstTb:%s dstVg:%d",
+         pCreate->name, smaObj.uid, smaObj.stbUid, smaObj.dstTbUid, smaObj.dstTbName, smaObj.dstVgId);
+
  code = 0;

 _OVER:
--- a/source/dnode/mnode/impl/src/mndStream.c
+++ b/source/dnode/mnode/impl/src/mndStream.c
@ -36,7 +36,7 @@ static int32_t mndStreamActionDelete(SSdb *pSdb, SStreamObj *pStream);
 static int32_t mndStreamActionUpdate(SSdb *pSdb, SStreamObj *pStream, SStreamObj *pNewStream);
 static int32_t mndProcessCreateStreamReq(SRpcMsg *pReq);
 static int32_t mndProcessDropStreamReq(SRpcMsg *pReq);
-static int32_t mndProcessRecoverStreamReq(SRpcMsg *pReq);
+/*static int32_t mndProcessRecoverStreamReq(SRpcMsg *pReq);*/
 static int32_t mndProcessStreamMetaReq(SRpcMsg *pReq);
 static int32_t mndGetStreamMeta(SRpcMsg *pReq, SShowObj *pShow, STableMetaRsp *pMeta);
 static int32_t mndRetrieveStream(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *pBlock, int32_t rows);
@ -55,7 +55,7 @@ int32_t mndInitStream(SMnode *pMnode) {

  mndSetMsgHandle(pMnode, TDMT_MND_CREATE_STREAM, mndProcessCreateStreamReq);
  mndSetMsgHandle(pMnode, TDMT_MND_DROP_STREAM, mndProcessDropStreamReq);
-  mndSetMsgHandle(pMnode, TDMT_MND_RECOVER_STREAM, mndProcessRecoverStreamReq);
+  /*mndSetMsgHandle(pMnode, TDMT_MND_RECOVER_STREAM, mndProcessRecoverStreamReq);*/

  mndSetMsgHandle(pMnode, TDMT_STREAM_TASK_DEPLOY_RSP, mndTransProcessRsp);
  mndSetMsgHandle(pMnode, TDMT_STREAM_TASK_DROP_RSP, mndTransProcessRsp);
@ -540,6 +540,7 @@ static int32_t mndPersistTaskRecoverReq(STrans *pTrans, SStreamTask *pTask) {
  return 0;
 }

+#if 0
 int32_t mndRecoverStreamTasks(SMnode *pMnode, STrans *pTrans, SStreamObj *pStream) {
  if (pStream->isDistributed) {
    int32_t lv = taosArrayGetSize(pStream->tasks);
@ -573,6 +574,7 @@ int32_t mndRecoverStreamTasks(SMnode *pMnode, STrans *pTrans, SStreamObj *pStrea
  }
  return 0;
 }
+#endif

 int32_t mndDropStreamTasks(SMnode *pMnode, STrans *pTrans, SStreamObj *pStream) {
  int32_t lv = taosArrayGetSize(pStream->tasks);
@ -755,6 +757,7 @@ static int32_t mndProcessDropStreamReq(SRpcMsg *pReq) {
  return TSDB_CODE_ACTION_IN_PROGRESS;
 }

+#if 0
 static int32_t mndProcessRecoverStreamReq(SRpcMsg *pReq) {
  SMnode     *pMnode = pReq->info.node;
  SStreamObj *pStream = NULL;
@ -817,6 +820,7 @@ static int32_t mndProcessRecoverStreamReq(SRpcMsg *pReq) {

  return TSDB_CODE_ACTION_IN_PROGRESS;
 }
+#endif

 int32_t mndDropStreamByDb(SMnode *pMnode, STrans *pTrans, SDbObj *pDb) {
  SSdb *pSdb = pMnode->pSdb;
--- a/source/dnode/vnode/src/inc/sma.h
+++ b/source/dnode/vnode/src/inc/sma.h
@ -115,24 +115,29 @@ struct SSmaStat {
 #define RSMA_FS_LOCK(r)       (&(r)->lock)

 struct SRSmaInfoItem {
-  void   *taskInfo;  // qTaskInfo_t
-  int64_t refId;
-  tmr_h   tmrId;
-  int32_t maxDelay;
  int8_t  level;
  int8_t  triggerStat;
+  int32_t maxDelay;
+  tmr_h   tmrId;
 };

 struct SRSmaInfo {
  STSchema *pTSchema;
  int64_t   suid;
+  int64_t   refId;  // refId of SRSmaStat
  int8_t    delFlag;
  T_REF_DECLARE()
  SRSmaInfoItem items[TSDB_RETENTION_L2];
+  void         *taskInfo[TSDB_RETENTION_L2];   // qTaskInfo_t
+  void         *iTaskInfo[TSDB_RETENTION_L2];  // immutable
 };
-#define RSMA_INFO_HEAD_LEN   24
-#define RSMA_INFO_IS_DEL(r)  ((r)->delFlag == 1)
-#define RSMA_INFO_SET_DEL(r) ((r)->delFlag = 1)
+
+#define RSMA_INFO_HEAD_LEN     32
+#define RSMA_INFO_IS_DEL(r)    ((r)->delFlag == 1)
+#define RSMA_INFO_SET_DEL(r)   ((r)->delFlag = 1)
+#define RSMA_INFO_QTASK(r, i)  ((r)->taskInfo[i])
+#define RSMA_INFO_IQTASK(r, i) ((r)->iTaskInfo[i])
+#define RSMA_INFO_ITEM(r, i)   (&(r)->items[i])

 enum {
  TASK_TRIGGER_STAT_INIT = 0,
@ -168,8 +173,8 @@ int32_t tdUnRefSmaStat(SSma *pSma, SSmaStat *pStat);
 int32_t tdRefRSmaInfo(SSma *pSma, SRSmaInfo *pRSmaInfo);
 int32_t tdUnRefRSmaInfo(SSma *pSma, SRSmaInfo *pRSmaInfo);

-void   *tdAcquireSmaRef(int32_t rsetId, int64_t refId, const char *tags, int32_t ln);
-int32_t tdReleaseSmaRef(int32_t rsetId, int64_t refId, const char *tags, int32_t ln);
+void   *tdAcquireSmaRef(int32_t rsetId, int64_t refId);
+int32_t tdReleaseSmaRef(int32_t rsetId, int64_t refId);

 int32_t tdCheckAndInitSmaEnv(SSma *pSma, int8_t smaType);

@ -223,12 +228,11 @@ static FORCE_INLINE void tdSmaStatSetDropped(STSmaStat *pTStat) {

 void           tdRSmaQTaskInfoGetFileName(int32_t vid, int64_t version, char *outputName);
 void           tdRSmaQTaskInfoGetFullName(int32_t vid, int64_t version, const char *path, char *outputName);
-int32_t        tdCloneRSmaInfo(SSma *pSma, SRSmaInfo *pDest, SRSmaInfo *pSrc);
+int32_t        tdCloneRSmaInfo(SSma *pSma, SRSmaInfo **pDest, SRSmaInfo *pSrc);
 void           tdFreeQTaskInfo(qTaskInfo_t *taskHandle, int32_t vgId, int32_t level);
 static int32_t tdDestroySmaState(SSmaStat *pSmaStat, int8_t smaType);
 void          *tdFreeSmaState(SSmaStat *pSmaStat, int8_t smaType);
 void          *tdFreeRSmaInfo(SSma *pSma, SRSmaInfo *pInfo, bool isDeepFree);
-void           tdRemoveRSmaInfoBySuid(SSma *pSma, int64_t suid);
 int32_t        tdRSmaPersistExecImpl(SRSmaStat *pRSmaStat, SHashObj *pInfoHash);

 int32_t tdProcessRSmaCreateImpl(SSma *pSma, SRSmaParam *param, int64_t suid, const char *tbName);
--- a/source/dnode/vnode/src/inc/tq.h
+++ b/source/dnode/vnode/src/inc/tq.h
@ -117,10 +117,9 @@ typedef struct {
 struct STQ {
  SVnode*   pVnode;
  char*     path;
-  SHashObj* pushMgr;       // consumerId -> STqHandle*
-  SHashObj* handles;       // subKey -> STqHandle
-  SHashObj* pStreamTasks;  // taksId -> SStreamTask
-  SHashObj* pAlterInfo;    // topic -> SAlterCheckInfo
+  SHashObj* pushMgr;     // consumerId -> STqHandle*
+  SHashObj* handles;     // subKey -> STqHandle
+  SHashObj* pAlterInfo;  // topic -> SAlterCheckInfo

  STqOffsetStore* pOffsetStore;

@ -129,9 +128,7 @@ struct STQ {

  TTB* pAlterInfoStore;

-  TDB* pStreamStore;
-  TTB* pTaskDb;
-  TTB* pTaskState;
+  SStreamMeta* pStreamMeta;
 };

 typedef struct {
@ -188,6 +185,9 @@ static FORCE_INLINE void tqOffsetResetToLog(STqOffsetVal* pOffsetVal, int64_t ve
  pOffsetVal->version = ver;
 }

+// tqStream
+int32_t tqExpandTask(STQ* pTq, SStreamTask* pTask);
+
 #ifdef __cplusplus
 }
 #endif
--- a/source/dnode/vnode/src/meta/metaTable.c
+++ b/source/dnode/vnode/src/meta/metaTable.c
@ -381,6 +381,8 @@ int metaCreateTable(SMeta *pMeta, int64_t version, SVCreateTbReq *pReq) {
    terrno = TSDB_CODE_TDB_TABLE_ALREADY_EXIST;
    metaReaderClear(&mr);
    return -1;
+  } else if (terrno == TSDB_CODE_PAR_TABLE_NOT_EXIST) {
+    terrno = TSDB_CODE_SUCCESS;
  }
  metaReaderClear(&mr);

--- a/source/dnode/vnode/src/sma/smaCommit.c
+++ b/source/dnode/vnode/src/sma/smaCommit.c
@ -308,12 +308,12 @@ static int32_t tdProcessRSmaSyncPostCommitImpl(SSma *pSma) {
 * @return int32_t
 */
 static int32_t tdProcessRSmaAsyncPreCommitImpl(SSma *pSma) {
-  SSmaEnv *pSmaEnv = SMA_RSMA_ENV(pSma);
-  if (!pSmaEnv) {
+  SSmaEnv *pEnv = SMA_RSMA_ENV(pSma);
+  if (!pEnv) {
    return TSDB_CODE_SUCCESS;
  }

-  SSmaStat  *pStat = SMA_ENV_STAT(pSmaEnv);
+  SSmaStat  *pStat = SMA_ENV_STAT(pEnv);
  SRSmaStat *pRSmaStat = SMA_RSMA_STAT(pStat);

  // step 1: set rsma stat
@ -337,18 +337,26 @@ static int32_t tdProcessRSmaAsyncPreCommitImpl(SSma *pSma) {
  }

  // step 3:  swap rsmaInfoHash and iRsmaInfoHash
-  ASSERT(!RSMA_IMU_INFO_HASH(pRSmaStat));
+  // lock
+  taosWLockLatch(SMA_ENV_LOCK(pEnv));
+
  ASSERT(RSMA_INFO_HASH(pRSmaStat));
+  ASSERT(!RSMA_IMU_INFO_HASH(pRSmaStat));

  RSMA_IMU_INFO_HASH(pRSmaStat) = RSMA_INFO_HASH(pRSmaStat);
  RSMA_INFO_HASH(pRSmaStat) =
      taosHashInit(RSMA_TASK_INFO_HASH_SLOT, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BIGINT), true, HASH_ENTRY_LOCK);

  if (!RSMA_INFO_HASH(pRSmaStat)) {
+    // unlock
+    taosWUnLockLatch(SMA_ENV_LOCK(pEnv));
    smaError("vgId:%d, rsma async commit failed since %s", SMA_VID(pSma), terrstr());
    return TSDB_CODE_FAILED;
  }

+  // unlock
+  taosWUnLockLatch(SMA_ENV_LOCK(pEnv));
+
  // step 4: others
  pRSmaStat->commitAppliedVer = pSma->pVnode->state.applied;

@ -383,26 +391,52 @@ static int32_t tdProcessRSmaAsyncCommitImpl(SSma *pSma) {
 * @return int32_t
 */
 static int32_t tdProcessRSmaAsyncPostCommitImpl(SSma *pSma) {
-  SSmaEnv *pSmaEnv = SMA_RSMA_ENV(pSma);
-  if (!pSmaEnv) {
+  SSmaEnv *pEnv = SMA_RSMA_ENV(pSma);
+  if (!pEnv) {
    return TSDB_CODE_SUCCESS;
  }

-  SSmaStat  *pStat = SMA_ENV_STAT(pSmaEnv);
+  SSmaStat  *pStat = SMA_ENV_STAT(pEnv);
  SRSmaStat *pRSmaStat = SMA_RSMA_STAT(pStat);

  // step 1: merge rsmaInfoHash and iRsmaInfoHash
-  taosWLockLatch(SMA_ENV_LOCK(pSmaEnv));
-
+  // lock
+  taosWLockLatch(SMA_ENV_LOCK(pEnv));
+#if 0
  if (taosHashGetSize(RSMA_INFO_HASH(pRSmaStat)) <= 0) {
-    // TODO: optimization - just switch the hash pointer if rsmaInfoHash is empty
-  }
-
+    // just switch the hash pointer if rsmaInfoHash is empty
+    if (taosHashGetSize(RSMA_IMU_INFO_HASH(pRSmaStat)) > 0) {
+      SHashObj *infoHash = RSMA_INFO_HASH(pRSmaStat);
+      RSMA_INFO_HASH(pRSmaStat) = RSMA_IMU_INFO_HASH(pRSmaStat);
+      RSMA_IMU_INFO_HASH(pRSmaStat) = infoHash;
+    }
+  } else {
+#endif
+#if 1
  void *pIter = taosHashIterate(RSMA_IMU_INFO_HASH(pRSmaStat), NULL);
  while (pIter) {
    tb_uid_t *pSuid = (tb_uid_t *)taosHashGetKey(pIter, NULL);

    if (!taosHashGet(RSMA_INFO_HASH(pRSmaStat), pSuid, sizeof(tb_uid_t))) {
+      SRSmaInfo *pRSmaInfo = *(SRSmaInfo **)pIter;
+      if (RSMA_INFO_IS_DEL(pRSmaInfo)) {
+        int32_t refVal = T_REF_VAL_GET(pRSmaInfo);
+        if (refVal == 0) {
+          tdFreeRSmaInfo(pSma, pRSmaInfo, true);
+          smaDebug(
+              "vgId:%d, rsma async post commit, free rsma info since already deleted and ref is 0 for "
+              "table:%" PRIi64,
+              SMA_VID(pSma), *pSuid);
+        } else {
+          smaDebug(
+              "vgId:%d, rsma async post commit, not free rsma info since ref is %d although already deleted for "
+              "table:%" PRIi64,
+              SMA_VID(pSma), refVal, *pSuid);
+        }
+
+        pIter = taosHashIterate(RSMA_IMU_INFO_HASH(pRSmaStat), pIter);
+        continue;
+      }
      taosHashPut(RSMA_INFO_HASH(pRSmaStat), pSuid, sizeof(tb_uid_t), pIter, sizeof(pIter));
      smaDebug("vgId:%d, rsma async post commit, migrated from iRsmaInfoHash for table:%" PRIi64, SMA_VID(pSma),
               *pSuid);
@ -416,11 +450,14 @@ static int32_t tdProcessRSmaAsyncPostCommitImpl(SSma *pSma) {

    pIter = taosHashIterate(RSMA_IMU_INFO_HASH(pRSmaStat), pIter);
  }
+#endif
+  // }

  taosHashCleanup(RSMA_IMU_INFO_HASH(pRSmaStat));
  RSMA_IMU_INFO_HASH(pRSmaStat) = NULL;

-  taosWUnLockLatch(SMA_ENV_LOCK(pSmaEnv));
+  // unlock
+  taosWUnLockLatch(SMA_ENV_LOCK(pEnv));

  // step 2: cleanup outdated qtaskinfo files
  tdCleanupQTaskInfoFiles(pSma, pRSmaStat);
--- a/source/dnode/vnode/src/sma/smaEnv.c
+++ b/source/dnode/vnode/src/sma/smaEnv.c
@ -17,7 +17,7 @@

 typedef struct SSmaStat SSmaStat;

-#define SMA_MGMT_REF_NUM         10240
+#define SMA_MGMT_REF_NUM 10240

 extern SSmaMgmt smaMgmt;

@ -171,7 +171,7 @@ int32_t tdUnRefSmaStat(SSma *pSma, SSmaStat *pStat) {

 int32_t tdRefRSmaInfo(SSma *pSma, SRSmaInfo *pRSmaInfo) {
  if (!pRSmaInfo) return 0;
-
+  
  int ref = T_REF_INC(pRSmaInfo);
  smaDebug("vgId:%d, ref rsma info:%p, val:%d", SMA_VID(pSma), pRSmaInfo, ref);
  return 0;
@ -183,9 +183,6 @@ int32_t tdUnRefRSmaInfo(SSma *pSma, SRSmaInfo *pRSmaInfo) {
  int ref = T_REF_DEC(pRSmaInfo);
  smaDebug("vgId:%d, unref rsma info:%p, val:%d", SMA_VID(pSma), pRSmaInfo, ref);

-  if (ref == 0) {
-    tdRemoveRSmaInfoBySuid(pSma, pRSmaInfo->suid);
-  }
  return 0;
 }

--- a/source/dnode/vnode/src/sma/smaRollup.c
+++ b/source/dnode/vnode/src/sma/smaRollup.c
@ -32,12 +32,14 @@ static int32_t    tdUidStorePut(STbUidStore *pStore, tb_uid_t suid, tb_uid_t *ui
 static int32_t    tdUpdateTbUidListImpl(SSma *pSma, tb_uid_t *suid, SArray *tbUids);
 static int32_t    tdSetRSmaInfoItemParams(SSma *pSma, SRSmaParam *param, SRSmaStat *pStat, SRSmaInfo *pRSmaInfo,
                                          int8_t idx);
-static int32_t    tdExecuteRSmaImpl(SSma *pSma, const void *pMsg, int32_t inputType, SRSmaInfoItem *rsmaItem,
-                                    STSchema *pTSchema, tb_uid_t suid, int8_t level);
-static SRSmaInfo *tdGetRSmaInfoBySuid(SSma *pSma, int64_t suid);
-static int32_t    tdRSmaFetchAndSubmitResult(SRSmaInfoItem *pItem, STSchema *pTSchema, int64_t suid, SRSmaStat *pStat,
-                                             int8_t blkType);
-static void       tdRSmaFetchTrigger(void *param, void *tmrId);
+static int32_t    tdExecuteRSmaImpl(SSma *pSma, const void *pMsg, int32_t inputType, SRSmaInfo *pInfo, tb_uid_t suid,
+                                    int8_t level);
+static SRSmaInfo *tdAcquireRSmaInfoBySuid(SSma *pSma, int64_t suid);
+static void       tdReleaseRSmaInfo(SSma *pSma, SRSmaInfo *pInfo);
+
+static int32_t tdRSmaFetchAndSubmitResult(qTaskInfo_t taskInfo, SRSmaInfoItem *pItem, STSchema *pTSchema, int64_t suid,
+                                          SRSmaStat *pStat, int8_t blkType);
+static void    tdRSmaFetchTrigger(void *param, void *tmrId);

 static int32_t tdRSmaQTaskInfoIterInit(SRSmaQTaskInfoIter *pIter, STFile *pTFile);
 static int32_t tdRSmaQTaskInfoIterNextBlock(SRSmaQTaskInfoIter *pIter, bool *isFinish);
@ -115,17 +117,26 @@ void *tdFreeRSmaInfo(SSma *pSma, SRSmaInfo *pInfo, bool isDeepFree) {
  if (pInfo) {
    for (int32_t i = 0; i < TSDB_RETENTION_L2; ++i) {
      SRSmaInfoItem *pItem = &pInfo->items[i];
-      if (pItem->taskInfo) {
-        if (isDeepFree && pItem->tmrId) {
-          smaDebug("vgId:%d, stop fetch timer %p for table %" PRIi64 " level %d", SMA_VID(pSma), pInfo->suid,
-                   pItem->tmrId, i + 1);
-          taosTmrStopA(&pItem->tmrId);
-        }
-        tdFreeQTaskInfo(&pItem->taskInfo, SMA_VID(pSma), i + 1);
+
+      if (isDeepFree && pItem->tmrId) {
+        smaDebug("vgId:%d, stop fetch timer %p for table %" PRIi64 " level %d", SMA_VID(pSma), pInfo->suid,
+                 pItem->tmrId, i + 1);
+        taosTmrStopA(&pItem->tmrId);
+      }
+
+      if (isDeepFree && pInfo->taskInfo[i]) {
+        tdFreeQTaskInfo(&pInfo->taskInfo[i], SMA_VID(pSma), i + 1);
      } else {
        smaDebug("vgId:%d, table %" PRIi64 " no need to destroy rsma info level %d since empty taskInfo", SMA_VID(pSma),
                 pInfo->suid, i + 1);
      }
+
+      if (pInfo->iTaskInfo[i]) {
+        tdFreeQTaskInfo(&pInfo->iTaskInfo[i], SMA_VID(pSma), i + 1);
+      } else {
+        smaDebug("vgId:%d, table %" PRIi64 " no need to destroy rsma info level %d since empty iTaskInfo",
+                 SMA_VID(pSma), pInfo->suid, i + 1);
+      }
    }
    if (isDeepFree) {
      taosMemoryFreeClear(pInfo->pTSchema);
@ -155,7 +166,12 @@ static int32_t tdUpdateTbUidListImpl(SSma *pSma, tb_uid_t *suid, SArray *tbUids)
    return TSDB_CODE_FAILED;
  }

-  pRSmaInfo = tdGetRSmaInfoBySuid(pSma, *suid);
+  if (!taosArrayGetSize(tbUids)) {
+    smaDebug("vgId:%d, no need to update tbUidList for suid:%" PRIi64 " since Empty tbUids", SMA_VID(pSma), *suid);
+    return TSDB_CODE_SUCCESS;
+  }
+
+  pRSmaInfo = tdAcquireRSmaInfoBySuid(pSma, *suid);

  if (!pRSmaInfo) {
    smaError("vgId:%d, failed to get rsma info for uid:%" PRIi64, SMA_VID(pSma), *suid);
@ -163,26 +179,21 @@ static int32_t tdUpdateTbUidListImpl(SSma *pSma, tb_uid_t *suid, SArray *tbUids)
    return TSDB_CODE_FAILED;
  }

-  if (pRSmaInfo->items[0].taskInfo) {
-    if ((qUpdateQualifiedTableId(pRSmaInfo->items[0].taskInfo, tbUids, true) < 0)) {
-      smaError("vgId:%d, update tbUidList failed for uid:%" PRIi64 " since %s", SMA_VID(pSma), *suid, terrstr());
-      return TSDB_CODE_FAILED;
-    } else {
-      smaDebug("vgId:%d, update tbUidList succeed for qTaskInfo:%p with suid:%" PRIi64 ", uid:%" PRIi64, SMA_VID(pSma),
-               pRSmaInfo->items[0].taskInfo, *suid, *(int64_t *)taosArrayGet(tbUids, 0));
-    }
-  }
-
-  if (pRSmaInfo->items[1].taskInfo) {
-    if ((qUpdateQualifiedTableId(pRSmaInfo->items[1].taskInfo, tbUids, true) < 0)) {
-      smaError("vgId:%d, update tbUidList failed for uid:%" PRIi64 " since %s", SMA_VID(pSma), *suid, terrstr());
-      return TSDB_CODE_FAILED;
-    } else {
-      smaDebug("vgId:%d, update tbUidList succeed for qTaskInfo:%p with suid:%" PRIi64 ", uid:%" PRIi64, SMA_VID(pSma),
-               pRSmaInfo->items[1].taskInfo, *suid, *(int64_t *)taosArrayGet(tbUids, 0));
+  for (int32_t i = 0; i < TSDB_RETENTION_L2; ++i) {
+    if (pRSmaInfo->taskInfo[i]) {
+      if ((qUpdateQualifiedTableId(pRSmaInfo->taskInfo[i], tbUids, true) < 0)) {
+        tdReleaseRSmaInfo(pSma, pRSmaInfo);
+        smaError("vgId:%d, update tbUidList failed for uid:%" PRIi64 " level %d since %s", SMA_VID(pSma), *suid, i,
+                 terrstr());
+        return TSDB_CODE_FAILED;
+      } else {
+        smaDebug("vgId:%d, update tbUidList succeed for qTaskInfo:%p with suid:%" PRIi64 " uid:%" PRIi64 " level %d",
+                 SMA_VID(pSma), pRSmaInfo->taskInfo[0], *suid, *(int64_t *)taosArrayGet(tbUids, 0), i);
+      }
    }
  }

+  tdReleaseRSmaInfo(pSma, pRSmaInfo);
  return TSDB_CODE_SUCCESS;
 }

@ -267,13 +278,12 @@ static int32_t tdSetRSmaInfoItemParams(SSma *pSma, SRSmaParam *param, SRSmaStat
        .initTqReader = 1,
    };

-    SRSmaInfoItem *pItem = &(pRSmaInfo->items[idx]);
-    pItem->refId = RSMA_REF_ID(pStat);
-    pItem->taskInfo = qCreateStreamExecTaskInfo(param->qmsg[idx], &handle);
-    if (!pItem->taskInfo) {
+    pRSmaInfo->taskInfo[idx] = qCreateStreamExecTaskInfo(param->qmsg[idx], &handle);
+    if (!pRSmaInfo->taskInfo[idx]) {
      terrno = TSDB_CODE_RSMA_QTASKINFO_CREATE;
      return TSDB_CODE_FAILED;
    }
+    SRSmaInfoItem *pItem = &(pRSmaInfo->items[idx]);
    pItem->triggerStat = TASK_TRIGGER_STAT_INACTIVE;
    if (param->maxdelay[idx] < TSDB_MIN_ROLLUP_MAX_DELAY) {
      int64_t msInterval =
@ -342,6 +352,7 @@ int32_t tdProcessRSmaCreateImpl(SSma *pSma, SRSmaParam *param, int64_t suid, con
  }
  pRSmaInfo->pTSchema = pTSchema;
  pRSmaInfo->suid = suid;
+  pRSmaInfo->refId = RSMA_REF_ID(pStat);
  T_REF_INIT_VAL(pRSmaInfo, 1);

  if (tdSetRSmaInfoItemParams(pSma, param, pStat, pRSmaInfo, 0) < 0) {
@ -411,7 +422,7 @@ int32_t tdProcessRSmaDrop(SSma *pSma, SVDropStbReq *pReq) {
  SSmaStat  *pStat = SMA_ENV_STAT(pSmaEnv);
  SRSmaStat *pRSmaStat = SMA_RSMA_STAT(pStat);

-  SRSmaInfo *pRSmaInfo = tdGetRSmaInfoBySuid(pSma, pReq->suid);
+  SRSmaInfo *pRSmaInfo = tdAcquireRSmaInfoBySuid(pSma, pReq->suid);

  if (!pRSmaInfo) {
    smaWarn("vgId:%d, drop rsma for stable %s %" PRIi64 " failed no rsma in hash", TD_VID(pVnode), pReq->name,
@ -423,8 +434,10 @@ int32_t tdProcessRSmaDrop(SSma *pSma, SVDropStbReq *pReq) {
  RSMA_INFO_SET_DEL(pRSmaInfo);
  tdUnRefRSmaInfo(pSma, pRSmaInfo);

-  // save to file
+  tdReleaseRSmaInfo(pSma, pRSmaInfo);

+  // save to file
+  // TODO
  smaDebug("vgId:%d, drop rsma for table %" PRIi64 " succeed", TD_VID(pVnode), pReq->suid);
  return TSDB_CODE_SUCCESS;
 }
@ -567,8 +580,32 @@ static void tdDestroySDataBlockArray(SArray *pArray) {
  taosArrayDestroy(pArray);
 }

-static int32_t tdRSmaFetchAndSubmitResult(SRSmaInfoItem *pItem, STSchema *pTSchema, int64_t suid, SRSmaStat *pStat,
-                                          int8_t blkType) {
+/**
+ * @brief retention of rsma1/rsma2
+ *
+ * @param pSma
+ * @param now
+ * @return int32_t
+ */
+int32_t smaDoRetention(SSma *pSma, int64_t now) {
+  int32_t code = TSDB_CODE_SUCCESS;
+  if (VND_IS_RSMA(pSma->pVnode)) {
+    return code;
+  }
+
+  for (int32_t i = 0; i < TSDB_RETENTION_L2; ++i) {
+    if (pSma->pRSmaTsdb[i]) {
+      code = tsdbDoRetention(pSma->pRSmaTsdb[i], now);
+      if (code) goto _end;
+    }
+  }
+
+_end:
+  return code;
+}
+
+static int32_t tdRSmaFetchAndSubmitResult(qTaskInfo_t taskInfo, SRSmaInfoItem *pItem, STSchema *pTSchema, int64_t suid,
+                                          SRSmaStat *pStat, int8_t blkType) {
  SArray *pResult = NULL;
  SSma   *pSma = pStat->pSma;

@ -576,7 +613,7 @@ static int32_t tdRSmaFetchAndSubmitResult(SRSmaInfoItem *pItem, STSchema *pTSche
    SSDataBlock *output = NULL;
    uint64_t     ts;

-    int32_t code = qExecTask(pItem->taskInfo, &output, &ts);
+    int32_t code = qExecTask(taskInfo, &output, &ts);
    if (code < 0) {
      smaError("vgId:%d, qExecTask for rsma table %" PRIi64 " level %" PRIi8 " failed since %s", SMA_VID(pSma), suid,
               pItem->level, terrstr(code));
@ -637,29 +674,32 @@ _err:
  return TSDB_CODE_FAILED;
 }

-static int32_t tdExecuteRSmaImpl(SSma *pSma, const void *pMsg, int32_t inputType, SRSmaInfoItem *pItem,
-                                 STSchema *pTSchema, tb_uid_t suid, int8_t level) {
-  if (!pItem || !pItem->taskInfo) {
+static int32_t tdExecuteRSmaImpl(SSma *pSma, const void *pMsg, int32_t inputType, SRSmaInfo *pInfo, tb_uid_t suid,
+                                 int8_t level) {
+  int32_t idx = level - 1;
+  if (!pInfo || !RSMA_INFO_QTASK(pInfo, idx)) {
    smaDebug("vgId:%d, no qTaskInfo to execute rsma %" PRIi8 " task for suid:%" PRIu64, SMA_VID(pSma), level, suid);
    return TSDB_CODE_SUCCESS;
  }
-  if (!pTSchema) {
+  if (!pInfo->pTSchema) {
    smaWarn("vgId:%d, no schema to execute rsma %" PRIi8 " task for suid:%" PRIu64, SMA_VID(pSma), level, suid);
    return TSDB_CODE_FAILED;
  }

  smaDebug("vgId:%d, execute rsma %" PRIi8 " task for qTaskInfo:%p suid:%" PRIu64, SMA_VID(pSma), level,
-           pItem->taskInfo, suid);
+           RSMA_INFO_QTASK(pInfo, idx), suid);

-  if (qSetMultiStreamInput(pItem->taskInfo, pMsg, 1, inputType) < 0) {  // INPUT__DATA_SUBMIT
+  if (qSetMultiStreamInput(RSMA_INFO_QTASK(pInfo, idx), pMsg, 1, inputType) < 0) {  // INPUT__DATA_SUBMIT
    smaError("vgId:%d, rsma %" PRIi8 " qSetStreamInput failed since %s", SMA_VID(pSma), level, tstrerror(terrno));
    return TSDB_CODE_FAILED;
  }

-  SSmaEnv   *pEnv = SMA_RSMA_ENV(pSma);
-  SRSmaStat *pStat = SMA_RSMA_STAT(pEnv->pStat);
+  SSmaEnv       *pEnv = SMA_RSMA_ENV(pSma);
+  SRSmaStat     *pStat = SMA_RSMA_STAT(pEnv->pStat);
+  SRSmaInfoItem *pItem = RSMA_INFO_ITEM(pInfo, idx);

-  tdRSmaFetchAndSubmitResult(pItem, pTSchema, suid, pStat, STREAM_INPUT__DATA_SUBMIT);
+  tdRSmaFetchAndSubmitResult(RSMA_INFO_QTASK(pInfo, idx), pItem, pInfo->pTSchema, suid, pStat,
+                             STREAM_INPUT__DATA_SUBMIT);
  atomic_store_8(&pItem->triggerStat, TASK_TRIGGER_STAT_ACTIVE);

  if (smaMgmt.tmrHandle) {
@ -678,7 +718,7 @@ static int32_t tdExecuteRSmaImpl(SSma *pSma, const void *pMsg, int32_t inputType
 * @param suid
 * @return SRSmaInfo*
 */
-static SRSmaInfo *tdGetRSmaInfoBySuid(SSma *pSma, int64_t suid) {
+static SRSmaInfo *tdAcquireRSmaInfoBySuid(SSma *pSma, int64_t suid) {
  SSmaEnv   *pEnv = SMA_RSMA_ENV(pSma);
  SRSmaStat *pStat = NULL;
  SRSmaInfo *pRSmaInfo = NULL;
@ -692,94 +732,86 @@ static SRSmaInfo *tdGetRSmaInfoBySuid(SSma *pSma, int64_t suid) {
    return NULL;
  }

+  taosRLockLatch(SMA_ENV_LOCK(pEnv));
  pRSmaInfo = taosHashGet(RSMA_INFO_HASH(pStat), &suid, sizeof(tb_uid_t));
  if (pRSmaInfo && (pRSmaInfo = *(SRSmaInfo **)pRSmaInfo)) {
+    if (RSMA_INFO_IS_DEL(pRSmaInfo)) {
+      taosRUnLockLatch(SMA_ENV_LOCK(pEnv));
+      return NULL;
+    }
+    tdRefRSmaInfo(pSma, pRSmaInfo);
+    taosRUnLockLatch(SMA_ENV_LOCK(pEnv));
    return pRSmaInfo;
  }

-  if (RSMA_COMMIT_STAT(pStat) == 0) {
+  if (RSMA_COMMIT_STAT(pStat) == 0) {  // return NULL if not in committing stat
+    taosRUnLockLatch(SMA_ENV_LOCK(pEnv));
    return NULL;
  }
+  taosRUnLockLatch(SMA_ENV_LOCK(pEnv));

  // clone the SRSmaInfo from iRsmaInfoHash to rsmaInfoHash if in committing stat
  SRSmaInfo *pCowRSmaInfo = NULL;
  // lock
  taosWLockLatch(SMA_ENV_LOCK(pEnv));
-  if (!taosHashGet(RSMA_INFO_HASH(pStat), &suid, sizeof(tb_uid_t))) {  // 2-phase lock
+  if (!(pCowRSmaInfo = taosHashGet(RSMA_INFO_HASH(pStat), &suid, sizeof(tb_uid_t)))) {  // 2-phase lock
    void *iRSmaInfo = taosHashGet(RSMA_IMU_INFO_HASH(pStat), &suid, sizeof(tb_uid_t));
    if (iRSmaInfo) {
      SRSmaInfo *pIRSmaInfo = *(SRSmaInfo **)iRSmaInfo;
-      if (pIRSmaInfo) {
-        if (tdCloneRSmaInfo(pSma, pCowRSmaInfo, pIRSmaInfo) < 0) {
+      if (pIRSmaInfo && !RSMA_INFO_IS_DEL(pIRSmaInfo)) {
+        if (tdCloneRSmaInfo(pSma, &pCowRSmaInfo, pIRSmaInfo) < 0) {
+          // unlock
          taosWUnLockLatch(SMA_ENV_LOCK(pEnv));
          smaError("vgId:%d, clone rsma info failed for suid:%" PRIu64 " since %s", SMA_VID(pSma), suid, terrstr());
          return NULL;
        }
        smaDebug("vgId:%d, clone rsma info succeed for suid:%" PRIu64, SMA_VID(pSma), suid);
        if (taosHashPut(RSMA_INFO_HASH(pStat), &suid, sizeof(tb_uid_t), &pCowRSmaInfo, sizeof(pCowRSmaInfo)) < 0) {
+          // unlock
          taosWUnLockLatch(SMA_ENV_LOCK(pEnv));
+          smaError("vgId:%d, clone rsma info failed for suid:%" PRIu64 " since %s", SMA_VID(pSma), suid, terrstr());
          return NULL;
        }
      }
    }
+  } else {
+    pCowRSmaInfo = *(SRSmaInfo **)pCowRSmaInfo;
+    ASSERT(!pCowRSmaInfo);
+  }
+
+  if(pCowRSmaInfo) {
+    tdRefRSmaInfo(pSma, pCowRSmaInfo);
  }
  // unlock
  taosWUnLockLatch(SMA_ENV_LOCK(pEnv));
  return pCowRSmaInfo;
 }

-/**
- * @brief During the drop procedure, only need to delete the object in rsmaInfoHash.
- *
- * @param pSma
- * @param suid
- * @return SRSmaInfo*
- */
-void tdRemoveRSmaInfoBySuid(SSma *pSma, int64_t suid) {
-  SSmaEnv   *pEnv = SMA_RSMA_ENV(pSma);
-  SRSmaStat *pStat = NULL;
-  SRSmaInfo *pRSmaInfo = NULL;
-
-  if (!pEnv) {
-    return;
-  }
-
-  pStat = (SRSmaStat *)SMA_ENV_STAT(pEnv);
-  if (!pStat || !RSMA_INFO_HASH(pStat)) {
-    return;
-  }
-
-  pRSmaInfo = taosHashGet(RSMA_INFO_HASH(pStat), &suid, sizeof(tb_uid_t));
-  if (pRSmaInfo) {
-    if ((pRSmaInfo = *(SRSmaInfo **)pRSmaInfo)) {
-      tdFreeRSmaInfo(pSma, pRSmaInfo, true);
-    }
-    taosHashRemove(RSMA_INFO_HASH(pStat), &suid, sizeof(tb_uid_t));
-    smaDebug("vgId:%d, remove from infoHash for table:%" PRIu64 " succeed", SMA_VID(pSma), suid);
+static FORCE_INLINE void tdReleaseRSmaInfo(SSma *pSma, SRSmaInfo *pInfo) {
+  if (pInfo) {
+    tdUnRefRSmaInfo(pSma, pInfo);
  }
 }

 static int32_t tdExecuteRSma(SSma *pSma, const void *pMsg, int32_t inputType, tb_uid_t suid) {
-  SRSmaInfo *pRSmaInfo = tdGetRSmaInfoBySuid(pSma, suid);
+  SRSmaInfo *pRSmaInfo = tdAcquireRSmaInfoBySuid(pSma, suid);
  if (!pRSmaInfo) {
    smaDebug("vgId:%d, execute rsma, no rsma info for suid:%" PRIu64, SMA_VID(pSma), suid);
    return TSDB_CODE_SUCCESS;
  }

-  if (!pRSmaInfo->items[0].taskInfo) {
+  if (!RSMA_INFO_QTASK(pRSmaInfo, 0)) {
+    tdReleaseRSmaInfo(pSma, pRSmaInfo);
    smaDebug("vgId:%d, execute rsma, no rsma qTaskInfo for suid:%" PRIu64, SMA_VID(pSma), suid);
    return TSDB_CODE_SUCCESS;
  }

  if (inputType == STREAM_INPUT__DATA_SUBMIT) {
-    tdRefRSmaInfo(pSma, pRSmaInfo);
-
-    tdExecuteRSmaImpl(pSma, pMsg, inputType, &pRSmaInfo->items[0], pRSmaInfo->pTSchema, suid, TSDB_RETENTION_L1);
-    tdExecuteRSmaImpl(pSma, pMsg, inputType, &pRSmaInfo->items[1], pRSmaInfo->pTSchema, suid, TSDB_RETENTION_L2);
-
-    tdUnRefRSmaInfo(pSma, pRSmaInfo);
+    tdExecuteRSmaImpl(pSma, pMsg, inputType, pRSmaInfo, suid, TSDB_RETENTION_L1);
+    tdExecuteRSmaImpl(pSma, pMsg, inputType, pRSmaInfo, suid, TSDB_RETENTION_L2);
  }

+  tdReleaseRSmaInfo(pSma, pRSmaInfo);
  return TSDB_CODE_SUCCESS;
 }

@ -990,26 +1022,28 @@ static int32_t tdRSmaQTaskInfoItemRestore(SSma *pSma, const SRSmaQTaskInfoItem *
  SRSmaInfo *pRSmaInfo = NULL;
  void      *qTaskInfo = NULL;

-  pRSmaInfo = tdGetRSmaInfoBySuid(pSma, pItem->suid);
+  pRSmaInfo = tdAcquireRSmaInfoBySuid(pSma, pItem->suid);
  if (!pRSmaInfo) {
    smaDebug("vgId:%d, no restore as no rsma info for table:%" PRIu64, SMA_VID(pSma), pItem->suid);
    return TSDB_CODE_SUCCESS;
  }

  if (pItem->type == TSDB_RETENTION_L1) {
-    qTaskInfo = pRSmaInfo->items[0].taskInfo;
+    qTaskInfo = RSMA_INFO_QTASK(pRSmaInfo, 0);
  } else if (pItem->type == TSDB_RETENTION_L2) {
-    qTaskInfo = pRSmaInfo->items[1].taskInfo;
+    qTaskInfo = RSMA_INFO_QTASK(pRSmaInfo, 1);
  } else {
    ASSERT(0);
  }

  if (!qTaskInfo) {
+    tdReleaseRSmaInfo(pSma, pRSmaInfo);
    smaDebug("vgId:%d, no restore as NULL rsma qTaskInfo for table:%" PRIu64, SMA_VID(pSma), pItem->suid);
    return TSDB_CODE_SUCCESS;
  }

  if (qDeserializeTaskStatus(qTaskInfo, pItem->qTaskInfo, pItem->len) < 0) {
+    tdReleaseRSmaInfo(pSma, pRSmaInfo);
    smaError("vgId:%d, restore rsma task failed for table:%" PRIi64 " level %d since %s", SMA_VID(pSma), pItem->suid,
             pItem->type, terrstr());
    return TSDB_CODE_FAILED;
@ -1017,6 +1051,7 @@ static int32_t tdRSmaQTaskInfoItemRestore(SSma *pSma, const SRSmaQTaskInfoItem *
  smaDebug("vgId:%d, restore rsma task success for table:%" PRIi64 " level %d", SMA_VID(pSma), pItem->suid,
           pItem->type);

+  tdReleaseRSmaInfo(pSma, pRSmaInfo);
  return TSDB_CODE_SUCCESS;
 }

@ -1195,8 +1230,14 @@ int32_t tdRSmaPersistExecImpl(SRSmaStat *pRSmaStat, SHashObj *pInfoHash) {

  while (infoHash) {
    SRSmaInfo *pRSmaInfo = *(SRSmaInfo **)infoHash;
+
+    if (RSMA_INFO_IS_DEL(pRSmaInfo)) {
+      infoHash = taosHashIterate(pInfoHash, infoHash);
+      continue;
+    }
+
    for (int32_t i = 0; i < TSDB_RETENTION_L2; ++i) {
-      qTaskInfo_t taskInfo = pRSmaInfo->items[i].taskInfo;
+      qTaskInfo_t taskInfo = RSMA_INFO_QTASK(pRSmaInfo, i);
      if (!taskInfo) {
        smaDebug("vgId:%d, rsma, table %" PRIi64 " level %d qTaskInfo is NULL", vid, pRSmaInfo->suid, i + 1);
        continue;
@ -1290,11 +1331,17 @@ _err:
 static void tdRSmaFetchTrigger(void *param, void *tmrId) {
  SRSmaInfoItem *pItem = param;
  SSma          *pSma = NULL;
-  SRSmaStat     *pStat = (SRSmaStat *)tdAcquireSmaRef(smaMgmt.rsetId, pItem->refId, __func__, __LINE__);
+  SRSmaInfo     *pRSmaInfo = tdGetRSmaInfoByItem(pItem);
+
+  if (RSMA_INFO_IS_DEL(pRSmaInfo)) {
+    return;
+  }
+
+  SRSmaStat *pStat = (SRSmaStat *)tdAcquireSmaRef(smaMgmt.rsetId, pRSmaInfo->refId);

  if (!pStat) {
    smaDebug("rsma fetch task not start since already destroyed, rsetId rsetId:%" PRIi64 " refId:%d)", smaMgmt.rsetId,
-             pItem->refId);
+             pRSmaInfo->refId);
    return;
  }

@ -1305,10 +1352,10 @@ static void tdRSmaFetchTrigger(void *param, void *tmrId) {
  switch (rsmaTriggerStat) {
    case TASK_TRIGGER_STAT_PAUSED:
    case TASK_TRIGGER_STAT_CANCELLED: {
-      tdReleaseSmaRef(smaMgmt.rsetId, pItem->refId, __func__, __LINE__);
+      tdReleaseSmaRef(smaMgmt.rsetId, pRSmaInfo->refId);
      smaDebug("vgId:%d, not fetch rsma level %" PRIi8 " data since stat is %" PRIi8 ", rsetId rsetId:%" PRIi64
               " refId:%d",
-               SMA_VID(pSma), pItem->level, rsmaTriggerStat, smaMgmt.rsetId, pItem->refId);
+               SMA_VID(pSma), pItem->level, rsmaTriggerStat, smaMgmt.rsetId, pRSmaInfo->refId);
      if (rsmaTriggerStat == TASK_TRIGGER_STAT_PAUSED) {
        taosTmrReset(tdRSmaFetchTrigger, pItem->maxDelay > 5000 ? 5000 : pItem->maxDelay, pItem, smaMgmt.tmrHandle,
                     &pItem->tmrId);
@ -1319,11 +1366,6 @@ static void tdRSmaFetchTrigger(void *param, void *tmrId) {
      break;
  }

-  SRSmaInfo *pRSmaInfo = tdGetRSmaInfoByItem(pItem);
-  if (RSMA_INFO_IS_DEL(pRSmaInfo)) {
-    goto _end;
-  }
-
  int8_t fetchTriggerStat =
      atomic_val_compare_exchange_8(&pItem->triggerStat, TASK_TRIGGER_STAT_ACTIVE, TASK_TRIGGER_STAT_INACTIVE);
  switch (fetchTriggerStat) {
@ -1332,16 +1374,14 @@ static void tdRSmaFetchTrigger(void *param, void *tmrId) {
               pItem->level, pRSmaInfo->suid);

      // sync procedure => async process
-      tdRefRSmaInfo(pSma, pRSmaInfo);

      SSDataBlock dataBlock = {.info.type = STREAM_GET_ALL};
-      qSetMultiStreamInput(pItem->taskInfo, &dataBlock, 1, STREAM_INPUT__DATA_BLOCK);
-      tdRSmaFetchAndSubmitResult(pItem, pRSmaInfo->pTSchema, pRSmaInfo->suid, pStat, STREAM_INPUT__DATA_BLOCK);
-      tdCleanupStreamInputDataBlock(pItem->taskInfo);
+      qTaskInfo_t taskInfo = pRSmaInfo->taskInfo[pItem->level - 1];
+      qSetMultiStreamInput(taskInfo, &dataBlock, 1, STREAM_INPUT__DATA_BLOCK);
+      tdRSmaFetchAndSubmitResult(taskInfo, pItem, pRSmaInfo->pTSchema, pRSmaInfo->suid, pStat,
+                                 STREAM_INPUT__DATA_BLOCK);
+      tdCleanupStreamInputDataBlock(taskInfo);

-      tdUnRefRSmaInfo(pSma, pRSmaInfo);
-      // atomic_store_8(&pItem->triggerStat, TASK_TRIGGER_STAT_ACTIVE);
-      // taosTmrReset(tdRSmaFetchTrigger, 5000, pItem, smaMgmt.tmrHandle, &pItem->tmrId);
    } break;
    case TASK_TRIGGER_STAT_PAUSED: {
      smaDebug("vgId:%d, not fetch rsma level %" PRIi8 " data for table:%" PRIi64 " since stat is paused",
@ -1362,22 +1402,5 @@ static void tdRSmaFetchTrigger(void *param, void *tmrId) {
  }

 _end:
-  tdReleaseSmaRef(smaMgmt.rsetId, pItem->refId, __func__, __LINE__);
+  tdReleaseSmaRef(smaMgmt.rsetId, pRSmaInfo->refId);
 }
-
-int32_t smaDoRetention(SSma *pSma, int64_t now) {
-  int32_t code = TSDB_CODE_SUCCESS;
-  if (VND_IS_RSMA(pSma->pVnode)) {
-    return code;
-  }
-
-  for (int32_t i = 0; i < TSDB_RETENTION_L2; ++i) {
-    if (pSma->pRSmaTsdb[i]) {
-      code = tsdbDoRetention(pSma->pRSmaTsdb[i], now);
-      if (code) goto _end;
-    }
-  }
-
-_end:
-  return code;
-}
--- a/source/dnode/vnode/src/sma/smaTimeRange.c
+++ b/source/dnode/vnode/src/sma/smaTimeRange.c
@ -116,8 +116,10 @@ int32_t tdProcessTSmaCreateImpl(SSma *pSma, int64_t version, const char *pMsg) {
    }

    // create stable to save tsma result in dstVgId
+    SName stbFullName = {0};
+    tNameFromString(&stbFullName, pCfg->dstTbName, T_NAME_ACCT | T_NAME_DB | T_NAME_TABLE);
    SVCreateStbReq pReq = {0};
-    pReq.name = pCfg->dstTbName;
+    pReq.name = (char*)tNameGetTableName(&stbFullName);
    pReq.suid = pCfg->dstTbUid;
    pReq.schemaRow = pCfg->schemaRow;
    pReq.schemaTag = pCfg->schemaTag;
@ -125,6 +127,12 @@ int32_t tdProcessTSmaCreateImpl(SSma *pSma, int64_t version, const char *pMsg) {
    if (metaCreateSTable(SMA_META(pSma), version, &pReq) < 0) {
      return -1;
    }
+
+    smaDebug("vgId:%d, success to create sma index %s %" PRIi64 " on stb:%" PRIi64 ", dstSuid:%" PRIi64
+             " dstTb:%s dstVg:%d",
+             SMA_VID(pSma), pCfg->indexName, pCfg->indexUid, pCfg->tableUid, pCfg->dstTbUid, pReq.name, pCfg->dstVgId);
+  } else {
+    ASSERT(0);
  }

  return 0;
--- a/source/dnode/vnode/src/sma/smaUtil.c
+++ b/source/dnode/vnode/src/sma/smaUtil.c
@ -287,22 +287,22 @@ int32_t tdRemoveTFile(STFile *pTFile) {
 }

 // smaXXXUtil ================
-void *tdAcquireSmaRef(int32_t rsetId, int64_t refId, const char *tags, int32_t ln) {
+void *tdAcquireSmaRef(int32_t rsetId, int64_t refId) {
  void *pResult = taosAcquireRef(rsetId, refId);
  if (!pResult) {
-    smaWarn("%s:%d taosAcquireRef for rsetId:%" PRIi64 " refId:%d failed since %s", tags, ln, rsetId, refId, terrstr());
+    smaWarn("rsma acquire ref for rsetId:%" PRIi64 " refId:%d failed since %s", rsetId, refId, terrstr());
  } else {
-    smaDebug("%s:%d taosAcquireRef for rsetId:%" PRIi64 " refId:%d success", tags, ln, rsetId, refId);
+    smaDebug("rsma acquire ref for rsetId:%" PRIi64 " refId:%d success", rsetId, refId);
  }
  return pResult;
 }

-int32_t tdReleaseSmaRef(int32_t rsetId, int64_t refId, const char *tags, int32_t ln) {
+int32_t tdReleaseSmaRef(int32_t rsetId, int64_t refId) {
  if (taosReleaseRef(rsetId, refId) < 0) {
-    smaWarn("%s:%d taosReleaseRef for rsetId:%" PRIi64 " refId:%d failed since %s", tags, ln, rsetId, refId, terrstr());
+    smaWarn("rsma release ref for rsetId:%" PRIi64 " refId:%d failed since %s", rsetId, refId, terrstr());
    return TSDB_CODE_FAILED;
  }
-  smaDebug("%s:%d taosReleaseRef for rsetId:%" PRIi64 " refId:%d success", tags, ln, rsetId, refId);
+  smaDebug("rsma release ref for rsetId:%" PRIi64 " refId:%d success", rsetId, refId);

  return TSDB_CODE_SUCCESS;
 }
@ -313,7 +313,7 @@ static int32_t tdCloneQTaskInfo(SSma *pSma, qTaskInfo_t dstTaskInfo, qTaskInfo_t
  char   *pOutput = NULL;
  int32_t len = 0;

-  if (qSerializeTaskStatus(srcTaskInfo, &pOutput, &len) < 0) {
+  if ((terrno = qSerializeTaskStatus(srcTaskInfo, &pOutput, &len)) < 0) {
    smaError("vgId:%d, rsma clone, table %" PRIi64 " serialize qTaskInfo failed since %s", TD_VID(pVnode), suid,
             terrstr());
    goto _err;
@ -337,41 +337,34 @@ static int32_t tdCloneQTaskInfo(SSma *pSma, qTaskInfo_t dstTaskInfo, qTaskInfo_t
    goto _err;
  }

-  smaError("vgId:%d, rsma clone, restore rsma task for table:%" PRIi64 " succeed", TD_VID(pVnode), suid);
+  smaDebug("vgId:%d, rsma clone, restore rsma task for table:%" PRIi64 " succeed", TD_VID(pVnode), suid);

  taosMemoryFreeClear(pOutput);
  return TSDB_CODE_SUCCESS;
 _err:
  taosMemoryFreeClear(pOutput);
  tdFreeQTaskInfo(dstTaskInfo, TD_VID(pVnode), idx + 1);
+  smaError("vgId:%d, rsma clone, restore rsma task for table:%" PRIi64 " failed since %s", TD_VID(pVnode), suid,
+           terrstr());
  return TSDB_CODE_FAILED;
 }

 /**
 * @brief pTSchema is shared
- * 
- * @param pSma 
- * @param pDest 
- * @param pSrc 
- * @return int32_t 
+ *
+ * @param pSma
+ * @param pDest
+ * @param pSrc
+ * @return int32_t
 */
-int32_t tdCloneRSmaInfo(SSma *pSma, SRSmaInfo *pDest, SRSmaInfo *pSrc) {
+int32_t tdCloneRSmaInfo(SSma *pSma, SRSmaInfo **pDest, SRSmaInfo *pSrc) {
  SVnode     *pVnode = pSma->pVnode;
  SRSmaParam *param = NULL;
  if (!pSrc) {
+    *pDest = NULL;
    return TSDB_CODE_SUCCESS;
  }

-  if (!pDest) {
-    pDest = taosMemoryCalloc(1, sizeof(SRSmaInfo));
-    if (!pDest) {
-      terrno = TSDB_CODE_OUT_OF_MEMORY;
-      return TSDB_CODE_FAILED;
-    }
-  }
-
-  memcpy(pDest, pSrc, sizeof(SRSmaInfo));
-
  SMetaReader mr = {0};
  metaReaderInit(&mr, SMA_META(pSma), 0);
  smaDebug("vgId:%d, rsma clone, suid is %" PRIi64, TD_VID(pVnode), pSrc->suid);
@ -384,21 +377,22 @@ int32_t tdCloneRSmaInfo(SSma *pSma, SRSmaInfo *pDest, SRSmaInfo *pSrc) {
  ASSERT(mr.me.uid == pSrc->suid);
  if (TABLE_IS_ROLLUP(mr.me.flags)) {
    param = &mr.me.stbEntry.rsmaParam;
-    for (int i = 0; i < TSDB_RETENTION_L2; ++i) {
-      SRSmaInfoItem *pItem = &pSrc->items[i];
-      if (pItem->taskInfo) {
-        tdCloneQTaskInfo(pSma, pDest->items[i].taskInfo, pItem->taskInfo, param, pSrc->suid, i);
+    for (int32_t i = 0; i < TSDB_RETENTION_L2; ++i) {
+      if (tdCloneQTaskInfo(pSma, pSrc->iTaskInfo[i], pSrc->taskInfo[i], param, pSrc->suid, i) < 0) {
+        goto _err;
      }
    }
    smaDebug("vgId:%d, rsma clone env success for %" PRIi64, TD_VID(pVnode), pSrc->suid);
  }

  metaReaderClear(&mr);
+
+  *pDest = pSrc;  // pointer copy
+
  return TSDB_CODE_SUCCESS;
 _err:
+  *pDest = NULL;
  metaReaderClear(&mr);
-  tdFreeRSmaInfo(pSma, pDest, false);
+  smaError("vgId:%d, rsma clone env failed for %" PRIi64 " since %s", TD_VID(pVnode), pSrc->suid, terrstr());
  return TSDB_CODE_FAILED;
-}
-
-// ...
+}
--- a/source/dnode/vnode/src/tq/tq.c
+++ b/source/dnode/vnode/src/tq/tq.c
@ -62,8 +62,6 @@ STQ* tqOpen(const char* path, SVnode* pVnode) {

  pTq->handles = taosHashInit(64, MurmurHash3_32, true, HASH_ENTRY_LOCK);

-  pTq->pStreamTasks = taosHashInit(64, taosGetDefaultHashFunction(TSDB_DATA_TYPE_INT), true, HASH_NO_LOCK);
-
  pTq->pushMgr = taosHashInit(64, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BIGINT), true, HASH_ENTRY_LOCK);

  pTq->pAlterInfo = taosHashInit(64, MurmurHash3_32, true, HASH_ENTRY_LOCK);
@ -76,6 +74,11 @@ STQ* tqOpen(const char* path, SVnode* pVnode) {
    ASSERT(0);
  }

+  pTq->pStreamMeta = streamMetaOpen(path, pTq, (FTaskExpand*)tqExpandTask);
+  if (pTq->pStreamMeta == NULL) {
+    ASSERT(0);
+  }
+
  return pTq;
 }

@ -83,18 +86,11 @@ void tqClose(STQ* pTq) {
  if (pTq) {
    tqOffsetClose(pTq->pOffsetStore);
    taosHashCleanup(pTq->handles);
-    void* pIter = NULL;
-    while (1) {
-      pIter = taosHashIterate(pTq->pStreamTasks, pIter);
-      if (pIter == NULL) break;
-      SStreamTask* pTask = *(SStreamTask**)pIter;
-      tFreeSStreamTask(pTask);
-    }
-    taosHashCleanup(pTq->pStreamTasks);
    taosHashCleanup(pTq->pushMgr);
    taosHashCleanup(pTq->pAlterInfo);
    taosMemoryFree(pTq->path);
    tqMetaClose(pTq);
+    streamMetaClose(pTq->pStreamMeta);
    taosMemoryFree(pTq);
  }
 }
@ -672,6 +668,9 @@ FAIL:
 }

 int32_t tqProcessTaskDeployReq(STQ* pTq, char* msg, int32_t msgLen) {
+  //
+  return streamMetaAddSerializedTask(pTq->pStreamMeta, msg, msgLen);
+#if 0
  SStreamTask* pTask = taosMemoryCalloc(1, sizeof(SStreamTask));
  if (pTask == NULL) {
    return -1;
@ -695,6 +694,7 @@ int32_t tqProcessTaskDeployReq(STQ* pTq, char* msg, int32_t msgLen) {
 FAIL:
  if (pTask) taosMemoryFree(pTask);
  return -1;
+#endif
 }

 int32_t tqProcessStreamTrigger(STQ* pTq, SSubmitReq* pReq, int64_t ver) {
@ -710,7 +710,7 @@ int32_t tqProcessStreamTrigger(STQ* pTq, SSubmitReq* pReq, int64_t ver) {
  }

  while (1) {
-    pIter = taosHashIterate(pTq->pStreamTasks, pIter);
+    pIter = taosHashIterate(pTq->pStreamMeta->pTasks, pIter);
    if (pIter == NULL) break;
    SStreamTask* pTask = *(SStreamTask**)pIter;
    if (pTask->taskLevel != TASK_LEVEL__SOURCE) continue;
@ -744,9 +744,9 @@ int32_t tqProcessTaskRunReq(STQ* pTq, SRpcMsg* pMsg) {
  //
  SStreamTaskRunReq* pReq = pMsg->pCont;
  int32_t            taskId = pReq->taskId;
-  SStreamTask**      ppTask = (SStreamTask**)taosHashGet(pTq->pStreamTasks, &taskId, sizeof(int32_t));
-  if (ppTask) {
-    streamProcessRunReq(*ppTask);
+  SStreamTask*       pTask = streamMetaGetTask(pTq->pStreamMeta, taskId);
+  if (pTask) {
+    streamProcessRunReq(pTask);
    return 0;
  } else {
    return -1;
@ -762,14 +762,15 @@ int32_t tqProcessTaskDispatchReq(STQ* pTq, SRpcMsg* pMsg, bool exec) {
  SDecoder           decoder;
  tDecoderInit(&decoder, (uint8_t*)msgBody, msgLen);
  tDecodeStreamDispatchReq(&decoder, &req);
-  int32_t       taskId = req.taskId;
-  SStreamTask** ppTask = (SStreamTask**)taosHashGet(pTq->pStreamTasks, &taskId, sizeof(int32_t));
-  if (ppTask) {
+  int32_t taskId = req.taskId;
+
+  SStreamTask* pTask = streamMetaGetTask(pTq->pStreamMeta, taskId);
+  if (pTask) {
    SRpcMsg rsp = {
        .info = pMsg->info,
        .code = 0,
    };
-    streamProcessDispatchReq(*ppTask, &req, &rsp, exec);
+    streamProcessDispatchReq(pTask, &req, &rsp, exec);
    return 0;
  } else {
    return -1;
@ -779,9 +780,9 @@ int32_t tqProcessTaskDispatchReq(STQ* pTq, SRpcMsg* pMsg, bool exec) {
 int32_t tqProcessTaskRecoverReq(STQ* pTq, SRpcMsg* pMsg) {
  SStreamTaskRecoverReq* pReq = pMsg->pCont;
  int32_t                taskId = pReq->taskId;
-  SStreamTask**          ppTask = (SStreamTask**)taosHashGet(pTq->pStreamTasks, &taskId, sizeof(int32_t));
-  if (ppTask) {
-    streamProcessRecoverReq(*ppTask, pReq, pMsg);
+  SStreamTask*           pTask = streamMetaGetTask(pTq->pStreamMeta, taskId);
+  if (pTask) {
+    streamProcessRecoverReq(pTask, pReq, pMsg);
    return 0;
  } else {
    return -1;
@ -791,9 +792,9 @@ int32_t tqProcessTaskRecoverReq(STQ* pTq, SRpcMsg* pMsg) {
 int32_t tqProcessTaskDispatchRsp(STQ* pTq, SRpcMsg* pMsg) {
  SStreamDispatchRsp* pRsp = POINTER_SHIFT(pMsg->pCont, sizeof(SMsgHead));
  int32_t             taskId = pRsp->taskId;
-  SStreamTask**       ppTask = (SStreamTask**)taosHashGet(pTq->pStreamTasks, &taskId, sizeof(int32_t));
-  if (ppTask) {
-    streamProcessDispatchRsp(*ppTask, pRsp);
+  SStreamTask*        pTask = streamMetaGetTask(pTq->pStreamMeta, taskId);
+  if (pTask) {
+    streamProcessDispatchRsp(pTask, pRsp);
    return 0;
  } else {
    return -1;
@ -803,9 +804,10 @@ int32_t tqProcessTaskDispatchRsp(STQ* pTq, SRpcMsg* pMsg) {
 int32_t tqProcessTaskRecoverRsp(STQ* pTq, SRpcMsg* pMsg) {
  SStreamTaskRecoverRsp* pRsp = pMsg->pCont;
  int32_t                taskId = pRsp->rspTaskId;
-  SStreamTask**          ppTask = (SStreamTask**)taosHashGet(pTq->pStreamTasks, &taskId, sizeof(int32_t));
-  if (ppTask) {
-    streamProcessRecoverRsp(*ppTask, pRsp);
+
+  SStreamTask* pTask = streamMetaGetTask(pTq->pStreamMeta, taskId);
+  if (pTask) {
+    streamProcessRecoverRsp(pTask, pRsp);
    return 0;
  } else {
    return -1;
@ -815,18 +817,7 @@ int32_t tqProcessTaskRecoverRsp(STQ* pTq, SRpcMsg* pMsg) {
 int32_t tqProcessTaskDropReq(STQ* pTq, char* msg, int32_t msgLen) {
  SVDropStreamTaskReq* pReq = (SVDropStreamTaskReq*)msg;

-  SStreamTask** ppTask = (SStreamTask**)taosHashGet(pTq->pStreamTasks, &pReq->taskId, sizeof(int32_t));
-  if (ppTask) {
-    SStreamTask* pTask = *ppTask;
-    taosHashRemove(pTq->pStreamTasks, &pReq->taskId, sizeof(int32_t));
-    atomic_store_8(&pTask->taskStatus, TASK_STATUS__DROPPING);
-  }
-  // todo
-  // clear queue
-  // push drop req into queue
-  // launch exec to free memory
-  // remove from hash
-  return 0;
+  return streamMetaRemoveTask(pTq->pStreamMeta, pReq->taskId);
 }

 int32_t tqProcessTaskRetrieveReq(STQ* pTq, SRpcMsg* pMsg) {
@ -837,18 +828,18 @@ int32_t tqProcessTaskRetrieveReq(STQ* pTq, SRpcMsg* pMsg) {
  SDecoder           decoder;
  tDecoderInit(&decoder, msgBody, msgLen);
  tDecodeStreamRetrieveReq(&decoder, &req);
-  int32_t       taskId = req.dstTaskId;
-  SStreamTask** ppTask = (SStreamTask**)taosHashGet(pTq->pStreamTasks, &taskId, sizeof(int32_t));
-  if (ppTask) {
+  int32_t      taskId = req.dstTaskId;
+  SStreamTask* pTask = streamMetaGetTask(pTq->pStreamMeta, taskId);
+  if (pTask) {
    SRpcMsg rsp = {
        .info = pMsg->info,
        .code = 0,
    };
-    streamProcessRetrieveReq(*ppTask, &req, &rsp);
+    streamProcessRetrieveReq(pTask, &req, &rsp);
+    return 0;
  } else {
    return -1;
  }
-  return 0;
 }

 int32_t tqProcessTaskRetrieveRsp(STQ* pTq, SRpcMsg* pMsg) {
@ -871,16 +862,18 @@ void vnodeEnqueueStreamMsg(SVnode* pVnode, SRpcMsg* pMsg) {
    goto FAIL;
  }

-  int32_t       taskId = req.taskId;
-  SStreamTask** ppTask = (SStreamTask**)taosHashGet(pTq->pStreamTasks, &taskId, sizeof(int32_t));
-  if (ppTask) {
+  int32_t taskId = req.taskId;
+
+  SStreamTask* pTask = streamMetaGetTask(pTq->pStreamMeta, taskId);
+  if (pTask) {
    SRpcMsg rsp = {
        .info = pMsg->info,
        .code = 0,
    };
-    streamProcessDispatchReq(*ppTask, &req, &rsp, false);
+    streamProcessDispatchReq(pTask, &req, &rsp, false);
    return;
  }
+
 FAIL:
  if (pMsg->info.handle == NULL) return;
  SRpcMsg rsp = {
--- a/source/dnode/vnode/src/tq/tqPush.c
+++ b/source/dnode/vnode/src/tq/tqPush.c
@ -215,7 +215,7 @@ int tqPushMsg(STQ* pTq, void* msg, int32_t msgLen, tmsg_t msgType, int64_t ver)
  walApplyVer(pTq->pVnode->pWal, ver);

  if (msgType == TDMT_VND_SUBMIT) {
-    if (taosHashGetSize(pTq->pStreamTasks) == 0) return 0;
+    if (taosHashGetSize(pTq->pStreamMeta->pTasks) == 0) return 0;

    void* data = taosMemoryMalloc(msgLen);
    if (data == NULL) {
--- a/source/dnode/vnode/src/tq/tqRead.c
+++ b/source/dnode/vnode/src/tq/tqRead.c
@ -413,7 +413,7 @@ int32_t tqUpdateTbUidList(STQ* pTq, const SArray* tbUidList, bool isAdd) {
    }
  }
  while (1) {
-    pIter = taosHashIterate(pTq->pStreamTasks, pIter);
+    pIter = taosHashIterate(pTq->pStreamMeta->pTasks, pIter);
    if (pIter == NULL) break;
    SStreamTask* pTask = *(SStreamTask**)pIter;
    if (pTask->taskLevel == TASK_LEVEL__SOURCE) {
--- a/source/dnode/vnode/src/tsdb/tsdbSnapshot.c
+++ b/source/dnode/vnode/src/tsdb/tsdbSnapshot.c
@ -115,12 +115,19 @@ static int32_t tsdbSnapReadData(STsdbSnapReader* pReader, uint8_t** ppData) {
          TSDBROW row = tsdbRowFromBlockData(&pReader->oBlockData, iRow);
          int64_t version = TSDBROW_VERSION(&row);

+          tsdbTrace("vgId:%d, vnode snapshot tsdb read for %s, %" PRId64 "(%" PRId64 " , %" PRId64 ")",
+                    TD_VID(pReader->pTsdb->pVnode), pReader->pTsdb->path, version, pReader->sver, pReader->ever);
+
          if (version < pReader->sver || version > pReader->ever) continue;

          code = tBlockDataAppendRow(&pReader->nBlockData, &row, NULL);
          if (code) goto _err;
        }

+        if (pReader->nBlockData.nRow <= 0) {
+          continue;
+        }
+
        // org data
        // compress data (todo)
        int32_t size = sizeof(TABLEID) + tPutBlockData(NULL, &pReader->nBlockData);
@ -808,7 +815,8 @@ static int32_t tsdbSnapWriteTableData(STsdbSnapWriter* pWriter, TABLEID id) {
  if (code) goto _err;

 _exit:
-  tsdbDebug("vgId:%d, vnode snapshot tsdb write data impl for %s", TD_VID(pWriter->pTsdb->pVnode), pWriter->pTsdb->path);
+  tsdbDebug("vgId:%d, vnode snapshot tsdb write data impl for %s", TD_VID(pWriter->pTsdb->pVnode),
+            pWriter->pTsdb->path);
  return code;

 _err:
--- a/source/dnode/vnode/src/vnd/vnodeSvr.c
+++ b/source/dnode/vnode/src/vnd/vnodeSvr.c
@ -351,7 +351,6 @@ int32_t vnodeProcessFetchMsg(SVnode *pVnode, SRpcMsg *pMsg, SQueueInfo *pInfo) {
 // TODO: remove the function
 void smaHandleRes(void *pVnode, int64_t smaId, const SArray *data) {
  // TODO
-
  blockDebugShowDataBlocks(data, __func__);
  tdProcessTSmaInsert(((SVnode *)pVnode)->pSma, smaId, (const char *)data);
 }
@ -852,6 +851,7 @@ static int32_t vnodeProcessSubmitReq(SVnode *pVnode, int64_t version, void *pReq
      if (metaCreateTable(pVnode->pMeta, version, &createTbReq) < 0) {
        if (terrno != TSDB_CODE_TDB_TABLE_ALREADY_EXIST) {
          submitBlkRsp.code = terrno;
+          pRsp->code = terrno;
          tDecoderClear(&decoder);
          taosArrayDestroy(createTbReq.ctb.tagName);
          goto _exit;
--- a/source/dnode/vnode/src/vnd/vnodeSync.c
+++ b/source/dnode/vnode/src/vnd/vnodeSync.c
@ -722,10 +722,12 @@ void vnodeSyncClose(SVnode *pVnode) { syncStop(pVnode->sync); }

 bool vnodeIsLeader(SVnode *pVnode) {
  if (!syncIsReady(pVnode->sync)) {
+    vDebug("vgId:%d, vnode not ready", pVnode->config.vgId);
    return false;
  }

  if (!pVnode->restored) {
+    vDebug("vgId:%d, vnode not restored", pVnode->config.vgId);
    terrno = TSDB_CODE_APP_NOT_READY;
    return false;
  }
--- a/source/libs/catalog/src/ctgRemote.c
+++ b/source/libs/catalog/src/ctgRemote.c
@ -467,6 +467,7 @@ int32_t ctgAddBatch(SCatalog* pCtg, int32_t vgId, SRequestConnInfo* pConn, SCtgT
    if (NULL == taosArrayPush(newBatch.pMsgs, &req)) {
      CTG_ERR_JRET(TSDB_CODE_OUT_OF_MEMORY);
    }
+    msg = NULL;
    if (NULL == taosArrayPush(newBatch.pTaskIds, &pTask->taskId)) {
      CTG_ERR_JRET(TSDB_CODE_OUT_OF_MEMORY);
    }
@ -517,6 +518,7 @@ int32_t ctgAddBatch(SCatalog* pCtg, int32_t vgId, SRequestConnInfo* pConn, SCtgT
  if (NULL == taosArrayPush(pBatch->pMsgs, &req)) {
    CTG_ERR_JRET(TSDB_CODE_OUT_OF_MEMORY);
  }
+  msg = NULL;  
  if (NULL == taosArrayPush(pBatch->pTaskIds, &pTask->taskId)) {
    CTG_ERR_JRET(TSDB_CODE_OUT_OF_MEMORY);
  }
@ -545,7 +547,7 @@ int32_t ctgAddBatch(SCatalog* pCtg, int32_t vgId, SRequestConnInfo* pConn, SCtgT
      CTG_ERR_JRET(TSDB_CODE_APP_ERROR);
    }

-    tNameGetFullDbName(pName, newBatch.dbFName);    
+    tNameGetFullDbName(pName, pBatch->dbFName);    
  }

  ctgDebug("task %d %s req added to batch %d, target vgId %d", pTask->taskId, TMSG_INFO(msgType), pBatch->batchId,
--- a/source/libs/catalog/src/ctgUtil.c
+++ b/source/libs/catalog/src/ctgUtil.c
@ -438,6 +438,14 @@ void ctgFreeMsgCtx(SCtgMsgCtx* pCtx) {
  }
 }

+void ctgFreeTbMetasMsgCtx(SCtgMsgCtx* pCtx) {
+  ctgFreeMsgCtx(pCtx);
+  if (pCtx->lastOut) {
+    ctgFreeSTableMetaOutput((STableMetaOutput*)pCtx->lastOut);
+    pCtx->lastOut = NULL;
+  }
+}
+
 void ctgFreeSTableMetaOutput(STableMetaOutput* pOutput) {
  if (NULL == pOutput) {
    return;
@ -641,7 +649,7 @@ void ctgFreeTaskCtx(SCtgTask* pTask) {
      taosArrayDestroy(taskCtx->pFetchs);
      // NO NEED TO FREE pNames

-      taosArrayDestroyEx(pTask->msgCtxs, (FDelete)ctgFreeMsgCtx);
+      taosArrayDestroyEx(pTask->msgCtxs, (FDelete)ctgFreeTbMetasMsgCtx);
      
      if (pTask->msgCtx.lastOut) {
        ctgFreeSTableMetaOutput((STableMetaOutput*)pTask->msgCtx.lastOut);
--- a/source/libs/executor/src/executorimpl.c
+++ b/source/libs/executor/src/executorimpl.c
@ -1437,7 +1437,8 @@ static void setExecutionContext(SOperatorInfo* pOperator, int32_t numOfOutput, u
  pAggInfo->groupId = groupId;
 }

-static void doUpdateNumOfRows(SResultRow* pRow, int32_t numOfExprs, const int32_t* rowCellOffset) {
+static void doUpdateNumOfRows(SqlFunctionCtx* pCtx, SResultRow* pRow, int32_t numOfExprs, const int32_t* rowCellOffset) {
+  bool returnNotNull = false;
  for (int32_t j = 0; j < numOfExprs; ++j) {
    struct SResultRowEntryInfo* pResInfo = getResultEntryInfo(pRow, j, rowCellOffset);
    if (!isRowEntryInitialized(pResInfo)) {
@ -1447,6 +1448,15 @@ static void doUpdateNumOfRows(SResultRow* pRow, int32_t numOfExprs, const int32_
    if (pRow->numOfRows < pResInfo->numOfRes) {
      pRow->numOfRows = pResInfo->numOfRes;
    }
+
+    if (fmIsNotNullOutputFunc(pCtx[j].functionId)) {
+      returnNotNull = true;
+    }
+  }
+  // if all expr skips all blocks, e.g. all null inputs for max function, output one row in final result.
+  //  except for first/last, which require not null output, output no rows
+  if (pRow->numOfRows == 0 && !returnNotNull) {
+    pRow->numOfRows = 1;
  }
 }

@ -1458,7 +1468,7 @@ int32_t finalizeResultRowIntoResultDataBlock(SDiskbasedBuf* pBuf, SResultRowPosi
  SFilePage*  page = getBufPage(pBuf, resultRowPosition->pageId);
  SResultRow* pRow = (SResultRow*)((char*)page + resultRowPosition->offset);

-  doUpdateNumOfRows(pRow, numOfExprs, rowCellOffset);
+  doUpdateNumOfRows(pCtx, pRow, numOfExprs, rowCellOffset);
  if (pRow->numOfRows == 0) {
    releaseBufPage(pBuf, page);
    return 0;
@ -1514,7 +1524,7 @@ int32_t doCopyToSDataBlock(SExecTaskInfo* pTaskInfo, SSDataBlock* pBlock, SExprI

    SResultRow* pRow = (SResultRow*)((char*)page + pPos->pos.offset);

-    doUpdateNumOfRows(pRow, numOfExprs, rowCellOffset);
+    doUpdateNumOfRows(pCtx, pRow, numOfExprs, rowCellOffset);
    if (pRow->numOfRows == 0) {
      pGroupResInfo->index += 1;
      releaseBufPage(pBuf, page);
--- a/source/libs/function/src/builtinsimpl.c
+++ b/source/libs/function/src/builtinsimpl.c
@ -64,6 +64,9 @@ typedef struct SMinmaxResInfo {
  bool      assign;  // assign the first value or not
  int64_t   v;
  STuplePos tuplePos;
+
+  STuplePos nullTuplePos;
+  bool      nullTupleSaved;
 } SMinmaxResInfo;

 typedef struct STopBotResItem {
@ -75,6 +78,10 @@ typedef struct STopBotResItem {
 typedef struct STopBotRes {
  int32_t         maxSize;
  int16_t         type;
+
+  STuplePos       nullTuplePos;
+  bool            nullTupleSaved;
+
  STopBotResItem* pItems;
 } STopBotRes;

@ -221,6 +228,10 @@ typedef struct SSampleInfo {
  int32_t    numSampled;
  uint8_t    colType;
  int16_t    colBytes;
+
+  STuplePos  nullTuplePos;
+  bool       nullTupleSaved;
+
  char*      data;
  STuplePos* tuplePos;
 } SSampleInfo;
@ -1134,6 +1145,9 @@ bool minmaxFunctionSetup(SqlFunctionCtx* pCtx, SResultRowEntryInfo* pResultInfo)
  SMinmaxResInfo* buf = GET_ROWCELL_INTERBUF(pResultInfo);
  buf->assign = false;
  buf->tuplePos.pageId = -1;
+
+  buf->nullTupleSaved = false;
+  buf->nullTuplePos.pageId = -1;
  return true;
 }

@ -1575,6 +1589,10 @@ int32_t doMinMaxHelper(SqlFunctionCtx* pCtx, int32_t isMinFunc) {
  }

 _min_max_over:
+  if (numOfElems == 0 && pCtx->subsidiaries.num > 0 && !pBuf->nullTupleSaved ) {
+    doSaveTupleData(pCtx, pInput->startRowIndex, pCtx->pSrcBlock, &pBuf->nullTuplePos);
+    pBuf->nullTupleSaved = true;
+  }
  return numOfElems;
 }

@ -1615,7 +1633,7 @@ int32_t minmaxFunctionFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
  if (pEntryInfo->numOfRes > 0) {
    setSelectivityValue(pCtx, pBlock, &pRes->tuplePos, currentRow);
  } else {
-    setNullSelectivityValue(pCtx, pBlock, currentRow);
+    setSelectivityValue(pCtx, pBlock, &pRes->nullTuplePos, currentRow);
  }

  return pEntryInfo->numOfRes;
@ -3366,6 +3384,8 @@ bool topBotFunctionSetup(SqlFunctionCtx* pCtx, SResultRowEntryInfo* pResInfo) {

  pRes->maxSize = pCtx->param[1].param.i;

+  pRes->nullTupleSaved = false;
+  pRes->nullTuplePos.pageId = -1;
  return true;
 }

@ -3403,6 +3423,10 @@ int32_t topFunction(SqlFunctionCtx* pCtx) {
    doAddIntoResult(pCtx, data, i, pCtx->pSrcBlock, pRes->type, pInput->uid, pResInfo, true);
  }

+  if (numOfElems == 0 && pCtx->subsidiaries.num > 0 && !pRes->nullTupleSaved) {
+    doSaveTupleData(pCtx, pInput->startRowIndex, pCtx->pSrcBlock, &pRes->nullTuplePos);
+    pRes->nullTupleSaved = true;
+  }
  return TSDB_CODE_SUCCESS;
 }

@ -3427,6 +3451,11 @@ int32_t bottomFunction(SqlFunctionCtx* pCtx) {
    doAddIntoResult(pCtx, data, i, pCtx->pSrcBlock, pRes->type, pInput->uid, pResInfo, false);
  }

+  if (numOfElems == 0 && pCtx->subsidiaries.num > 0 && !pRes->nullTupleSaved) {
+    doSaveTupleData(pCtx, pInput->startRowIndex, pCtx->pSrcBlock, &pRes->nullTuplePos);
+    pRes->nullTupleSaved = true;
+  }
+
  return TSDB_CODE_SUCCESS;
 }

@ -3625,6 +3654,11 @@ int32_t topBotFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {

  // todo assign the tag value and the corresponding row data
  int32_t currentRow = pBlock->info.rows;
+  if (pEntryInfo->numOfRes <= 0) {
+    colDataAppendNULL(pCol, currentRow);
+    setSelectivityValue(pCtx, pBlock, &pRes->nullTuplePos, currentRow);
+    return pEntryInfo->numOfRes;
+  }
  for (int32_t i = 0; i < pEntryInfo->numOfRes; ++i) {
    STopBotResItem* pItem = &pRes->pItems[i];
    if (type == TSDB_DATA_TYPE_FLOAT) {
@ -4897,7 +4931,8 @@ bool sampleFunctionSetup(SqlFunctionCtx* pCtx, SResultRowEntryInfo* pResultInfo)
  pInfo->numSampled = 0;
  pInfo->colType = pCtx->resDataInfo.type;
  pInfo->colBytes = pCtx->resDataInfo.bytes;
-
+  pInfo->nullTuplePos.pageId = -1;
+  pInfo->nullTupleSaved = false;
  pInfo->data = (char*)pInfo + sizeof(SSampleInfo);
  pInfo->tuplePos = (STuplePos*)((char*)pInfo + sizeof(SSampleInfo) + pInfo->samples * pInfo->colBytes);

@ -4943,6 +4978,11 @@ int32_t sampleFunction(SqlFunctionCtx* pCtx) {
    doReservoirSample(pCtx, pInfo, data, i);
  }

+  if (pInfo->numSampled == 0 && pCtx->subsidiaries.num > 0 && !pInfo->nullTupleSaved) {
+    doSaveTupleData(pCtx, pInput->startRowIndex, pCtx->pSrcBlock, &pInfo->nullTuplePos);
+    pInfo->nullTupleSaved = true;
+  }
+
  SET_VAL(pResInfo, pInfo->numSampled, pInfo->numSampled);
  return TSDB_CODE_SUCCESS;
 }
@ -4957,6 +4997,11 @@ int32_t sampleFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
  SColumnInfoData* pCol = taosArrayGet(pBlock->pDataBlock, slotId);

  int32_t currentRow = pBlock->info.rows;
+  if (pInfo->numSampled == 0) {
+    colDataAppendNULL(pCol, currentRow);
+    setSelectivityValue(pCtx, pBlock, &pInfo->nullTuplePos, currentRow);
+    return pInfo->numSampled;
+  }
  for (int32_t i = 0; i < pInfo->numSampled; ++i) {
    colDataAppend(pCol, currentRow + i, pInfo->data + i * pInfo->colBytes, false);
    setSelectivityValue(pCtx, pBlock, &pInfo->tuplePos[i], currentRow + i);
--- a/source/libs/function/src/functionMgt.c
+++ b/source/libs/function/src/functionMgt.c
@ -221,6 +221,18 @@ bool fmIsLastRowFunc(int32_t funcId) {
  return FUNCTION_TYPE_LAST_ROW == funcMgtBuiltins[funcId].type;
 }

+bool fmIsNotNullOutputFunc(int32_t funcId) {
+  if (funcId < 0 || funcId >= funcMgtBuiltinsNum) {
+    return false;
+  }
+  return FUNCTION_TYPE_LAST == funcMgtBuiltins[funcId].type ||
+         FUNCTION_TYPE_LAST_PARTIAL == funcMgtBuiltins[funcId].type ||
+         FUNCTION_TYPE_LAST_MERGE == funcMgtBuiltins[funcId].type ||
+         FUNCTION_TYPE_FIRST == funcMgtBuiltins[funcId].type ||
+         FUNCTION_TYPE_FIRST_PARTIAL == funcMgtBuiltins[funcId].type ||
+         FUNCTION_TYPE_FIRST_MERGE == funcMgtBuiltins[funcId].type;
+}
+
 bool fmIsSelectValueFunc(int32_t funcId) {
  if (funcId < 0 || funcId >= funcMgtBuiltinsNum) {
    return false;
--- a/source/libs/parser/src/parTranslater.c
+++ b/source/libs/parser/src/parTranslater.c
@ -2515,7 +2515,7 @@ static bool isPartitionByTbname(SNodeList* pPartitionByList) {
    return false;
  }
  SNode* pPartKey = nodesListGetNode(pPartitionByList, 0);
-  return QUERY_NODE_FUNCTION != nodeType(pPartKey) || FUNCTION_TYPE_TBNAME != ((SFunctionNode*)pPartKey)->funcType;
+  return QUERY_NODE_FUNCTION == nodeType(pPartKey) && FUNCTION_TYPE_TBNAME == ((SFunctionNode*)pPartKey)->funcType;
 }

 static int32_t checkStateWindowForStream(STranslateContext* pCxt, SSelectStmt* pSelect) {
@ -2566,7 +2566,6 @@ static int32_t translateWindow(STranslateContext* pCxt, SSelectStmt* pSelect) {
  if (NULL == pSelect->pWindow) {
    return TSDB_CODE_SUCCESS;
  }
-  pSelect->isTimeLineResult = true;
  pCxt->currClause = SQL_CLAUSE_WINDOW;
  int32_t code = translateExpr(pCxt, &pSelect->pWindow);
  if (TSDB_CODE_SUCCESS == code) {
@ -2637,7 +2636,6 @@ static int32_t translatePartitionBy(STranslateContext* pCxt, SSelectStmt* pSelec
  if (NULL == pSelect->pPartitionByList) {
    return TSDB_CODE_SUCCESS;
  }
-  pSelect->isTimeLineResult = false;
  pCxt->currClause = SQL_CLAUSE_PARTITION_BY;
  return translateExprList(pCxt, pSelect->pPartitionByList);
 }
@ -4708,6 +4706,12 @@ static int32_t translateKillTransaction(STranslateContext* pCxt, SKillStmt* pStm
  return buildCmdMsg(pCxt, TDMT_MND_KILL_TRANS, (FSerializeFunc)tSerializeSKillTransReq, &killReq);
 }

+static bool crossTableWithoutAggOper(SSelectStmt* pSelect) {
+  return NULL == pSelect->pWindow && !pSelect->hasAggFuncs && !pSelect->hasIndefiniteRowsFunc &&
+         !pSelect->hasInterpFunc && TSDB_SUPER_TABLE == ((SRealTableNode*)pSelect->pFromTable)->pMeta->tableType &&
+         !isPartitionByTbname(pSelect->pPartitionByList);
+}
+
 static int32_t checkCreateStream(STranslateContext* pCxt, SCreateStreamStmt* pStmt) {
  if (NULL != pStmt->pOptions->pWatermark &&
      (DEAL_RES_ERROR == translateValue(pCxt, (SValueNode*)pStmt->pOptions->pWatermark))) {
@ -4723,14 +4727,12 @@ static int32_t checkCreateStream(STranslateContext* pCxt, SCreateStreamStmt* pSt
    return TSDB_CODE_SUCCESS;
  }

-  if (QUERY_NODE_SELECT_STMT == nodeType(pStmt->pQuery)) {
-    SSelectStmt* pSelect = (SSelectStmt*)pStmt->pQuery;
-    if (QUERY_NODE_REAL_TABLE == nodeType(pSelect->pFromTable)) {
-      return TSDB_CODE_SUCCESS;
-    }
+  if (QUERY_NODE_SELECT_STMT != nodeType(pStmt->pQuery) ||
+      QUERY_NODE_REAL_TABLE != nodeType(((SSelectStmt*)pStmt->pQuery)->pFromTable)) {
+    return generateSyntaxErrMsgExt(&pCxt->msgBuf, TSDB_CODE_PAR_INVALID_STREAM_QUERY, "Unsupported stream query");
  }

-  return generateSyntaxErrMsgExt(&pCxt->msgBuf, TSDB_CODE_PAR_INVALID_STREAM_QUERY, "Unsupported stream query");
+  return TSDB_CODE_SUCCESS;
 }

 static void getSourceDatabase(SNode* pStmt, int32_t acctId, char* pDbFName) {
@ -4759,12 +4761,23 @@ static int32_t addWstartTsToCreateStreamQuery(SNode* pStmt) {
  return code;
 }

+static int32_t checkStreamQuery(STranslateContext* pCxt, SSelectStmt* pSelect) {
+  if (TSDB_DATA_TYPE_TIMESTAMP != ((SExprNode*)nodesListGetNode(pSelect->pProjectionList, 0))->resType.type ||
+      !pSelect->isTimeLineResult || crossTableWithoutAggOper(pSelect)) {
+    return generateSyntaxErrMsgExt(&pCxt->msgBuf, TSDB_CODE_PAR_INVALID_STREAM_QUERY, "Unsupported stream query");
+  }
+  return TSDB_CODE_SUCCESS;
+}
+
 static int32_t buildCreateStreamQuery(STranslateContext* pCxt, SNode* pStmt, SCMCreateStreamReq* pReq) {
  pCxt->createStream = true;
  int32_t code = addWstartTsToCreateStreamQuery(pStmt);
  if (TSDB_CODE_SUCCESS == code) {
    code = translateQuery(pCxt, pStmt);
  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = checkStreamQuery(pCxt, (SSelectStmt*)pStmt);
+  }
  if (TSDB_CODE_SUCCESS == code) {
    getSourceDatabase(pStmt, pCxt->pParseCxt->acctId, pReq->sourceDB);
    code = nodesNodeToString(pStmt, false, &pReq->ast, NULL);
--- a/source/libs/planner/src/planSpliter.c
+++ b/source/libs/planner/src/planSpliter.c
@ -268,7 +268,7 @@ static bool stbSplNeedSplit(bool streamQuery, SLogicNode* pNode) {
    case QUERY_NODE_LOGIC_PLAN_JOIN:
      return stbSplNeedSplitJoin(streamQuery, (SJoinLogicNode*)pNode);
    case QUERY_NODE_LOGIC_PLAN_PARTITION:
-      return stbSplIsMultiTbScanChild(streamQuery, pNode);
+      return streamQuery ? false : stbSplIsMultiTbScanChild(streamQuery, pNode);
    case QUERY_NODE_LOGIC_PLAN_AGG:
      return !stbSplHasGatherExecFunc(((SAggLogicNode*)pNode)->pAggFuncs) && stbSplHasMultiTbScan(streamQuery, pNode);
    case QUERY_NODE_LOGIC_PLAN_WINDOW:
--- a/source/libs/stream/CMakeLists.txt
+++ b/source/libs/stream/CMakeLists.txt
@ -8,7 +8,8 @@ target_include_directories(

 target_link_libraries(
    stream
-    PRIVATE os util transport qcom executor tdb
+    PUBLIC tdb
+    PRIVATE os util transport qcom executor
 )

 if(${BUILD_TEST})
--- a/source/libs/stream/src/streamMeta.c
+++ b/source/libs/stream/src/streamMeta.c
@ -14,22 +14,8 @@
 */

 #include "executor.h"
-#include "tdbInt.h"
 #include "tstream.h"

-typedef int32_t FTaskExpand(void* ahandle, SStreamTask* pTask);
-
-typedef struct SStreamMeta {
-  char*        path;
-  TDB*         db;
-  TTB*         pTaskDb;
-  TTB*         pStateDb;
-  SHashObj*    pTasks;
-  void*        ahandle;
-  TXN          txn;
-  FTaskExpand* expandFunc;
-} SStreamMeta;
-
 SStreamMeta* streamMetaOpen(const char* path, void* ahandle, FTaskExpand expandFunc) {
  SStreamMeta* pMeta = taosMemoryCalloc(1, sizeof(SStreamMeta));
  if (pMeta == NULL) {
@ -50,8 +36,18 @@ SStreamMeta* streamMetaOpen(const char* path, void* ahandle, FTaskExpand expandF
    goto _err;
  }

+  pMeta->pTasks = taosHashInit(64, taosGetDefaultHashFunction(TSDB_DATA_TYPE_INT), true, HASH_NO_LOCK);
+  if (pMeta->pTasks == NULL) {
+    goto _err;
+  }
+
+  if (streamMetaBegin(pMeta) < 0) {
+    goto _err;
+  }
+
  pMeta->ahandle = ahandle;
  pMeta->expandFunc = expandFunc;
+
  return pMeta;
 _err:
  return NULL;
@ -62,6 +58,48 @@ void streamMetaClose(SStreamMeta* pMeta) {
  tdbTbClose(pMeta->pTaskDb);
  tdbTbClose(pMeta->pStateDb);
  tdbClose(pMeta->db);
+
+  void* pIter = NULL;
+  while (1) {
+    pIter = taosHashIterate(pMeta->pTasks, pIter);
+    if (pIter == NULL) break;
+    SStreamTask* pTask = *(SStreamTask**)pIter;
+    tFreeSStreamTask(pTask);
+  }
+  taosHashCleanup(pMeta->pTasks);
+  taosMemoryFree(pMeta->path);
+  taosMemoryFree(pMeta);
+}
+
+int32_t streamMetaAddSerializedTask(SStreamMeta* pMeta, char* msg, int32_t msgLen) {
+  SStreamTask* pTask = taosMemoryCalloc(1, sizeof(SStreamTask));
+  if (pTask == NULL) {
+    return -1;
+  }
+  SDecoder decoder;
+  tDecoderInit(&decoder, (uint8_t*)msg, msgLen);
+  if (tDecodeSStreamTask(&decoder, pTask) < 0) {
+    ASSERT(0);
+    goto FAIL;
+  }
+  tDecoderClear(&decoder);
+
+  if (pMeta->expandFunc(pMeta->ahandle, pTask) < 0) {
+    ASSERT(0);
+    goto FAIL;
+  }
+
+  taosHashPut(pMeta->pTasks, &pTask->taskId, sizeof(int32_t), &pTask, sizeof(void*));
+
+  if (tdbTbUpsert(pMeta->pTaskDb, &pTask->taskId, sizeof(int32_t), msg, msgLen, &pMeta->txn) < 0) {
+    ASSERT(0);
+    return -1;
+  }
+  return 0;
+
+FAIL:
+  if (pTask) taosMemoryFree(pTask);
+  return -1;
 }

 int32_t streamMetaAddTask(SStreamMeta* pMeta, SStreamTask* pTask) {
@ -94,6 +132,16 @@ int32_t streamMetaAddTask(SStreamMeta* pMeta, SStreamTask* pTask) {
  return 0;
 }

+SStreamTask* streamMetaGetTask(SStreamMeta* pMeta, int32_t taskId) {
+  SStreamTask** ppTask = (SStreamTask**)taosHashGet(pMeta->pTasks, &taskId, sizeof(int32_t));
+  if (ppTask) {
+    ASSERT((*ppTask)->taskId == taskId);
+    return *ppTask;
+  } else {
+    return NULL;
+  }
+}
+
 int32_t streamMetaRemoveTask(SStreamMeta* pMeta, int32_t taskId) {
  SStreamTask** ppTask = (SStreamTask**)taosHashGet(pMeta->pTasks, &taskId, sizeof(int32_t));
  if (ppTask) {
@ -150,7 +198,7 @@ int32_t streamMetaAbort(SStreamMeta* pMeta) {
  return 0;
 }

-int32_t streamRestoreTask(SStreamMeta* pMeta) {
+int32_t streamLoadTasks(SStreamMeta* pMeta) {
  TBC* pCur = NULL;
  if (tdbTbcOpen(pMeta->pTaskDb, &pCur, NULL) < 0) {
    ASSERT(0);
--- a/source/libs/stream/src/streamRecover.c
+++ b/source/libs/stream/src/streamRecover.c
@ -87,53 +87,80 @@ int32_t tDecodeSMStreamTaskRecoverRsp(SDecoder* pDecoder, SMStreamTaskRecoverRsp
  return 0;
 }

-int32_t streamProcessFailRecoverReq(SStreamTask* pTask, SMStreamTaskRecoverReq* pReq, SRpcMsg* pRsp) {
-#if 0
-  if (pTask->taskStatus != TASK_STATUS__FAIL) {
-    return 0;
-  }
+typedef struct {
+  int32_t vgId;
+  int32_t childId;
+  int64_t ver;
+} SStreamVgVerCheckpoint;

-  if (pTask->isStreamDistributed) {
-    if (pTask->taskType == TASK_TYPE__SOURCE) {
-      pTask->taskStatus = TASK_STATUS__PREPARE_RECOVER;
-    } else if (pTask->taskType != TASK_TYPE__SINK) {
-      pTask->taskStatus = TASK_STATUS__PREPARE_RECOVER;
-      bool    hasCheckpoint = false;
-      int32_t childSz = taosArrayGetSize(pTask->childEpInfo);
-      for (int32_t i = 0; i < childSz; i++) {
-        SStreamChildEpInfo* pEpInfo = taosArrayGetP(pTask->childEpInfo, i);
-        if (pEpInfo->checkpointVer == -1) {
-          hasCheckpoint = true;
-          break;
-        }
-      }
-      if (hasCheckpoint) {
-        // load from checkpoint
-      } else {
-        // recover child
-      }
-    }
-  } else {
-    if (pTask->taskType == TASK_TYPE__SOURCE) {
-      if (pTask->checkpointVer != -1) {
-        // load from checkpoint
-      } else {
-        // reset stream query task info
-        // TODO get snapshot ver
-        pTask->recoverSnapVer = -1;
-        qStreamPrepareRecover(pTask->exec.executor, pTask->startVer, pTask->recoverSnapVer);
-        pTask->taskStatus = TASK_STATUS__RECOVERING;
-      }
-    }
-  }
-
-  if (pTask->taskStatus == TASK_STATUS__RECOVERING) {
-    if (streamPipelineExec(pTask, 100) < 0) {
-      // set fail
-      return -1;
-    }
-  }
-
-#endif
+int32_t tEncodeSStreamVgVerCheckpoint(SEncoder* pEncoder, const SStreamVgVerCheckpoint* pCheckpoint) {
+  if (tEncodeI32(pEncoder, pCheckpoint->vgId) < 0) return -1;
+  if (tEncodeI32(pEncoder, pCheckpoint->childId) < 0) return -1;
+  if (tEncodeI64(pEncoder, pCheckpoint->ver) < 0) return -1;
+  return 0;
+}
+
+int32_t tDecodeSStreamVgVerCheckpoint(SDecoder* pDecoder, SStreamVgVerCheckpoint* pCheckpoint) {
+  if (tDecodeI32(pDecoder, &pCheckpoint->vgId) < 0) return -1;
+  if (tDecodeI32(pDecoder, &pCheckpoint->childId) < 0) return -1;
+  if (tDecodeI64(pDecoder, &pCheckpoint->ver) < 0) return -1;
+  return 0;
+}
+
+typedef struct {
+  int64_t streamId;
+  int64_t checkTs;
+  int64_t checkpointId;
+  int32_t taskId;
+  SArray* checkpointVer;  // SArray<SStreamVgCheckpointVer>
+} SStreamAggVerCheckpoint;
+
+int32_t tEncodeSStreamAggVerCheckpoint(SEncoder* pEncoder, const SStreamAggVerCheckpoint* pCheckpoint) {
+  if (tEncodeI64(pEncoder, pCheckpoint->streamId) < 0) return -1;
+  if (tEncodeI64(pEncoder, pCheckpoint->checkTs) < 0) return -1;
+  if (tEncodeI64(pEncoder, pCheckpoint->checkpointId) < 0) return -1;
+  if (tEncodeI32(pEncoder, pCheckpoint->taskId) < 0) return -1;
+  int32_t sz = taosArrayGetSize(pCheckpoint->checkpointVer);
+  if (tEncodeI32(pEncoder, sz) < 0) return -1;
+  for (int32_t i = 0; i < sz; i++) {
+    SStreamVgVerCheckpoint* pOneVgCkpoint = taosArrayGet(pCheckpoint->checkpointVer, i);
+    if (tEncodeSStreamVgVerCheckpoint(pEncoder, pOneVgCkpoint) < 0) return -1;
+  }
+  return 0;
+}
+
+int32_t tDecodeSStreamAggVerCheckpoint(SDecoder* pDecoder, SStreamAggVerCheckpoint* pCheckpoint) {
+  if (tDecodeI64(pDecoder, &pCheckpoint->streamId) < 0) return -1;
+  if (tDecodeI64(pDecoder, &pCheckpoint->checkTs) < 0) return -1;
+  if (tDecodeI64(pDecoder, &pCheckpoint->checkpointId) < 0) return -1;
+  if (tDecodeI32(pDecoder, &pCheckpoint->taskId) < 0) return -1;
+  int32_t sz;
+  if (tDecodeI32(pDecoder, &sz) < 0) return -1;
+  for (int32_t i = 0; i < sz; i++) {
+    SStreamVgVerCheckpoint oneVgCheckpoint;
+    if (tDecodeSStreamVgVerCheckpoint(pDecoder, &oneVgCheckpoint) < 0) return -1;
+    taosArrayPush(pCheckpoint->checkpointVer, &oneVgCheckpoint);
+  }
+  return 0;
+}
+
+int32_t streamRecoverSinkLevel(SStreamMeta* pMeta, SStreamTask* pTask) {
+  ASSERT(pTask->taskLevel == TASK_LEVEL__SINK);
+  // load status
+  void*   pVal = NULL;
+  int32_t vLen = 0;
+  if (tdbTbGet(pMeta->pStateDb, &pTask->taskId, sizeof(void*), &pVal, &vLen) < 0) {
+    return -1;
+  }
+  SDecoder decoder;
+  tDecoderInit(&decoder, pVal, vLen);
+  SStreamAggVerCheckpoint aggCheckpoint;
+  tDecodeSStreamAggVerCheckpoint(&decoder, &aggCheckpoint);
+  /*pTask->*/
+  return 0;
+}
+
+int32_t streamRecoverTask(SStreamTask* pTask) {
+  //
  return 0;
 }
--- a/source/libs/stream/src/streamTask.c
+++ b/source/libs/stream/src/streamTask.c
@ -52,6 +52,7 @@ int32_t tEncodeSStreamTask(SEncoder* pEncoder, const SStreamTask* pTask) {
  /*if (tStartEncode(pEncoder) < 0) return -1;*/
  if (tEncodeI64(pEncoder, pTask->streamId) < 0) return -1;
  if (tEncodeI32(pEncoder, pTask->taskId) < 0) return -1;
+  if (tEncodeI32(pEncoder, pTask->totalLevel) < 0) return -1;
  if (tEncodeI8(pEncoder, pTask->taskLevel) < 0) return -1;
  if (tEncodeI8(pEncoder, pTask->outputType) < 0) return -1;
  if (tEncodeI16(pEncoder, pTask->dispatchMsgType) < 0) return -1;
@ -62,7 +63,6 @@ int32_t tEncodeSStreamTask(SEncoder* pEncoder, const SStreamTask* pTask) {
  if (tEncodeI32(pEncoder, pTask->selfChildId) < 0) return -1;
  if (tEncodeI32(pEncoder, pTask->nodeId) < 0) return -1;
  if (tEncodeSEpSet(pEncoder, &pTask->epSet) < 0) return -1;
-  /*if (tEncodeI32(pEncoder, pTask->numOfVgroups) < 0) return -1;*/

  int32_t epSz = taosArrayGetSize(pTask->childEpInfo);
  if (tEncodeI32(pEncoder, epSz) < 0) return -1;
@ -101,6 +101,7 @@ int32_t tDecodeSStreamTask(SDecoder* pDecoder, SStreamTask* pTask) {
  /*if (tStartDecode(pDecoder) < 0) return -1;*/
  if (tDecodeI64(pDecoder, &pTask->streamId) < 0) return -1;
  if (tDecodeI32(pDecoder, &pTask->taskId) < 0) return -1;
+  if (tDecodeI32(pDecoder, &pTask->totalLevel) < 0) return -1;
  if (tDecodeI8(pDecoder, &pTask->taskLevel) < 0) return -1;
  if (tDecodeI8(pDecoder, &pTask->outputType) < 0) return -1;
  if (tDecodeI16(pDecoder, &pTask->dispatchMsgType) < 0) return -1;
@ -111,7 +112,6 @@ int32_t tDecodeSStreamTask(SDecoder* pDecoder, SStreamTask* pTask) {
  if (tDecodeI32(pDecoder, &pTask->selfChildId) < 0) return -1;
  if (tDecodeI32(pDecoder, &pTask->nodeId) < 0) return -1;
  if (tDecodeSEpSet(pDecoder, &pTask->epSet) < 0) return -1;
-  /*if (tDecodeI32(pDecoder, &pTask->numOfVgroups) < 0) return -1;*/

  int32_t epSz;
  if (tDecodeI32(pDecoder, &epSz) < 0) return -1;
--- a/source/libs/sync/inc/syncRaftLog.h
+++ b/source/libs/sync/inc/syncRaftLog.h
@ -47,6 +47,8 @@ char*          logStoreSimple2Str(SSyncLogStore* pLogStore);

 SyncIndex logStoreFirstIndex(SSyncLogStore* pLogStore);

+SyncIndex logStoreWalCommitVer(SSyncLogStore* pLogStore);
+
 // for debug
 void logStorePrint(SSyncLogStore* pLogStore);
 void logStorePrint2(char* s, SSyncLogStore* pLogStore);
--- a/source/libs/sync/src/syncAppendEntries.c
+++ b/source/libs/sync/src/syncAppendEntries.c
@ -357,16 +357,14 @@ static int32_t syncNodeMakeLogSame(SSyncNode* ths, SyncAppendEntries* pMsg) {
  code = ths->pLogStore->syncLogTruncate(ths->pLogStore, delBegin);
  ASSERT(code == 0);

-  char eventLog[128];
-  snprintf(eventLog, sizeof(eventLog), "log truncate, from %" PRId64 " to %" PRId64, delBegin, delEnd);
-  syncNodeEventLog(ths, eventLog);
-  logStoreSimpleLog2("after syncNodeMakeLogSame", ths->pLogStore);
-
  return code;
 }

+// if FromIndex > walCommitVer, return 0
+// else return num of pass entries
 static int32_t syncNodeDoMakeLogSame(SSyncNode* ths, SyncIndex FromIndex) {
-  int32_t code;
+  int32_t code = 0;
+  int32_t pass = 0;

  SyncIndex delBegin = FromIndex;
  SyncIndex delEnd = ths->pLogStore->syncLogLastIndex(ths->pLogStore);
@ -398,16 +396,31 @@ static int32_t syncNodeDoMakeLogSame(SSyncNode* ths, SyncIndex FromIndex) {
    }
  }

+  // update delete begin
+  SyncIndex walCommitVer = logStoreWalCommitVer(ths->pLogStore);
+
+  if (delBegin <= walCommitVer) {
+    delBegin = walCommitVer + 1;
+    pass = walCommitVer - delBegin + 1;
+
+    do {
+      char logBuf[128];
+      snprintf(logBuf, sizeof(logBuf), "update delete begin to %ld", delBegin);
+      syncNodeEventLog(ths, logBuf);
+    } while (0);
+  }
+
  // delete confict entries
  code = ths->pLogStore->syncLogTruncate(ths->pLogStore, delBegin);
  ASSERT(code == 0);

-  char eventLog[128];
-  snprintf(eventLog, sizeof(eventLog), "log truncate, from %" PRId64 " to %" PRId64, delBegin, delEnd);
-  syncNodeEventLog(ths, eventLog);
-  logStoreSimpleLog2("after syncNodeMakeLogSame", ths->pLogStore);
+  do {
+    char logBuf[128];
+    snprintf(logBuf, sizeof(logBuf), "make log same from:%ld, delbegin:%ld, pass:%d", FromIndex, delBegin, pass);
+    syncNodeEventLog(ths, logBuf);
+  } while (0);

-  return code;
+  return pass;
 }

 int32_t syncNodePreCommit(SSyncNode* ths, SSyncRaftEntry* pEntry, int32_t code) {
@ -543,31 +556,34 @@ int32_t syncNodeOnAppendEntriesSnapshot2Cb(SSyncNode* ths, SyncAppendEntriesBatc
      SOffsetAndContLen* metaTableArr = syncAppendEntriesBatchMetaTableArray(pMsg);

      if (hasAppendEntries && pMsg->prevLogIndex == ths->commitIndex) {
+        int32_t   pass = 0;
+        SyncIndex logLastIndex = ths->pLogStore->syncLogLastIndex(ths->pLogStore);
+        bool      hasExtraEntries = logLastIndex > pMsg->prevLogIndex;
+
        // make log same
-        do {
-          SyncIndex logLastIndex = ths->pLogStore->syncLogLastIndex(ths->pLogStore);
-          bool      hasExtraEntries = logLastIndex > pMsg->prevLogIndex;
-
-          if (hasExtraEntries) {
-            // make log same, rollback deleted entries
-            code = syncNodeDoMakeLogSame(ths, pMsg->prevLogIndex + 1);
-            ASSERT(code == 0);
-          }
-
-        } while (0);
+        if (hasExtraEntries) {
+          // make log same, rollback deleted entries
+          pass = syncNodeDoMakeLogSame(ths, pMsg->prevLogIndex + 1);
+          ASSERT(pass >= 0);
+        }

        // append entry batch
-        for (int32_t i = 0; i < pMsg->dataCount; ++i) {
-          SSyncRaftEntry* pAppendEntry = (SSyncRaftEntry*)(pMsg->data + metaTableArr[i].offset);
-          code = ths->pLogStore->syncLogAppendEntry(ths->pLogStore, pAppendEntry);
-          if (code != 0) {
-            return -1;
+        if (pass == 0) {
+          // assert! no batch
+          ASSERT(pMsg->dataCount <= 1);
+
+          for (int32_t i = 0; i < pMsg->dataCount; ++i) {
+            SSyncRaftEntry* pAppendEntry = (SSyncRaftEntry*)(pMsg->data + metaTableArr[i].offset);
+            code = ths->pLogStore->syncLogAppendEntry(ths->pLogStore, pAppendEntry);
+            if (code != 0) {
+              return -1;
+            }
+
+            code = syncNodePreCommit(ths, pAppendEntry, 0);
+            ASSERT(code == 0);
+
+            // syncEntryDestory(pAppendEntry);
          }
-
-          code = syncNodePreCommit(ths, pAppendEntry, 0);
-          ASSERT(code == 0);
-
-          // syncEntryDestory(pAppendEntry);
        }

        // fsync once
@ -670,25 +686,33 @@ int32_t syncNodeOnAppendEntriesSnapshot2Cb(SSyncNode* ths, SyncAppendEntriesBatc

      syncLogRecvAppendEntriesBatch(ths, pMsg, "really match");

+      int32_t pass = 0;
+
      if (hasExtraEntries) {
        // make log same, rollback deleted entries
-        code = syncNodeDoMakeLogSame(ths, pMsg->prevLogIndex + 1);
-        ASSERT(code == 0);
+        pass = syncNodeDoMakeLogSame(ths, pMsg->prevLogIndex + 1);
+        ASSERT(pass >= 0);
      }

      if (hasAppendEntries) {
        // append entry batch
-        for (int32_t i = 0; i < pMsg->dataCount; ++i) {
-          SSyncRaftEntry* pAppendEntry = (SSyncRaftEntry*)(pMsg->data + metaTableArr[i].offset);
-          code = ths->pLogStore->syncLogAppendEntry(ths->pLogStore, pAppendEntry);
-          if (code != 0) {
-            return -1;
+        if (pass == 0) {
+          // assert! no batch
+          ASSERT(pMsg->dataCount <= 1);
+
+          // append entry batch
+          for (int32_t i = 0; i < pMsg->dataCount; ++i) {
+            SSyncRaftEntry* pAppendEntry = (SSyncRaftEntry*)(pMsg->data + metaTableArr[i].offset);
+            code = ths->pLogStore->syncLogAppendEntry(ths->pLogStore, pAppendEntry);
+            if (code != 0) {
+              return -1;
+            }
+
+            code = syncNodePreCommit(ths, pAppendEntry, 0);
+            ASSERT(code == 0);
+
+            // syncEntryDestory(pAppendEntry);
          }
-
-          code = syncNodePreCommit(ths, pAppendEntry, 0);
-          ASSERT(code == 0);
-
-          // syncEntryDestory(pAppendEntry);
        }

        // fsync once
--- a/source/libs/sync/src/syncCommit.c
+++ b/source/libs/sync/src/syncCommit.c
@ -92,6 +92,12 @@ void syncMaybeAdvanceCommitIndex(SSyncNode* pSyncNode) {
    }
  }

+  // advance commit index as large as possible
+  SyncIndex walCommitVer = logStoreWalCommitVer(pSyncNode->pLogStore);
+  if (walCommitVer > newCommitIndex) {
+    newCommitIndex = walCommitVer;
+  }
+
  // maybe execute fsm
  if (newCommitIndex > pSyncNode->commitIndex) {
    SyncIndex beginIndex = pSyncNode->commitIndex + 1;
--- a/source/libs/sync/src/syncMain.c
+++ b/source/libs/sync/src/syncMain.c
@ -2409,6 +2409,9 @@ static void syncNodeEqElectTimer(void* param, void* tmrId) {

 static void syncNodeEqHeartbeatTimer(void* param, void* tmrId) {
  SSyncNode* pSyncNode = (SSyncNode*)param;
+
+  syncNodeEventLog(pSyncNode, "eq hb timer");
+
  if (pSyncNode->replicaNum > 1) {
    if (atomic_load_64(&pSyncNode->heartbeatTimerLogicClockUser) <=
        atomic_load_64(&pSyncNode->heartbeatTimerLogicClock)) {
@ -2665,7 +2668,22 @@ int32_t syncDoLeaderTransfer(SSyncNode* ths, SRpcMsg* pRpcMsg, SSyncRaftEntry* p
    syncNodeEventLog(ths, "I am not follower, can not do leader transfer");
    return 0;
  }
-  syncNodeEventLog(ths, "do leader transfer");
+
+  if (!ths->restoreFinish) {
+    syncNodeEventLog(ths, "restore not finish, can not do leader transfer");
+    return 0;
+  }
+
+  if (ths->vgId > 1) {
+    syncNodeEventLog(ths, "I am vnode, can not do leader transfer");
+    return 0;
+  }
+
+  do {
+    char logBuf[128];
+    snprintf(logBuf, sizeof(logBuf), "do leader transfer, index:%ld", pEntry->index);
+    syncNodeEventLog(ths, logBuf);
+  } while (0);

  bool sameId = syncUtilSameId(&(pSyncLeaderTransfer->newLeaderId), &(ths->myRaftId));
  bool sameNodeInfo = strcmp(pSyncLeaderTransfer->newNodeInfo.nodeFqdn, ths->myNodeInfo.nodeFqdn) == 0 &&
--- a/source/libs/sync/src/syncRaftLog.c
+++ b/source/libs/sync/src/syncRaftLog.c
@ -305,10 +305,18 @@ static int32_t raftLogGetEntry(struct SSyncLogStore* pLogStore, SyncIndex index,
  return code;
 }

+// truncate semantic
 static int32_t raftLogTruncate(struct SSyncLogStore* pLogStore, SyncIndex fromIndex) {
  SSyncLogStoreData* pData = pLogStore->data;
  SWal*              pWal = pData->pWal;
-  int32_t            code = walRollback(pWal, fromIndex);
+
+  // need not truncate
+  SyncIndex wallastVer = walGetLastVer(pWal);
+  if (fromIndex > wallastVer) {
+    return 0;
+  }
+
+  int32_t code = walRollback(pWal, fromIndex);
  if (code != 0) {
    int32_t     err = terrno;
    const char* errStr = tstrerror(err);
@ -323,7 +331,7 @@ static int32_t raftLogTruncate(struct SSyncLogStore* pLogStore, SyncIndex fromIn
  // event log
  do {
    char logBuf[128];
-    snprintf(logBuf, sizeof(logBuf), "wal truncate, from-index:%" PRId64, fromIndex);
+    snprintf(logBuf, sizeof(logBuf), "log truncate, from-index:%" PRId64, fromIndex);
    syncNodeEventLog(pData->pSyncNode, logBuf);
  } while (0);

@ -637,6 +645,12 @@ SyncIndex logStoreFirstIndex(SSyncLogStore* pLogStore) {
  return walGetFirstVer(pWal);
 }

+SyncIndex logStoreWalCommitVer(SSyncLogStore* pLogStore) {
+  SSyncLogStoreData* pData = pLogStore->data;
+  SWal*              pWal = pData->pWal;
+  return walGetCommittedVer(pWal);
+}
+
 // for debug -----------------
 void logStorePrint(SSyncLogStore* pLogStore) {
  char* serialized = logStore2Str(pLogStore);
--- a/source/libs/transport/inc/transComm.h
+++ b/source/libs/transport/inc/transComm.h
@ -94,9 +94,10 @@ typedef void* queue[2];
 /* Return the structure holding the given element. */
 #define QUEUE_DATA(e, type, field) ((type*)((void*)((char*)(e)-offsetof(type, field))))

-#define TRANS_RETRY_COUNT_LIMIT 100  // retry count limit
-#define TRANS_RETRY_INTERVAL    15   // ms retry interval
-#define TRANS_CONN_TIMEOUT      3    // connect timeout
+#define TRANS_RETRY_COUNT_LIMIT 100   // retry count limit
+#define TRANS_RETRY_INTERVAL    15    // retry interval (ms)
+#define TRANS_CONN_TIMEOUT      3     // connect timeout (s)
+#define TRANS_READ_TIMEOUT      3000  // read timeout  (ms)

 typedef SRpcMsg      STransMsg;
 typedef SRpcCtx      STransCtx;
--- a/source/libs/transport/inc/transportInt.h
+++ b/source/libs/transport/inc/transportInt.h
@ -53,6 +53,7 @@ typedef struct {

  void (*cfp)(void* parent, SRpcMsg*, SEpSet*);
  bool (*retry)(int32_t code, tmsg_t msgType);
+  bool (*startTimer)(int32_t code, tmsg_t msgType);
  int index;

  void*         parent;
--- a/source/libs/transport/src/.transSvr.c.swo
+++ b/source/libs/transport/src/.transSvr.c.swo
--- a/source/libs/transport/src/trans.c
+++ b/source/libs/transport/src/trans.c
@ -48,6 +48,7 @@ void* rpcOpen(const SRpcInit* pInit) {
  // register callback handle
  pRpc->cfp = pInit->cfp;
  pRpc->retry = pInit->rfp;
+  pRpc->startTimer = pInit->tfp;

  if (pInit->connType == TAOS_CONN_SERVER) {
    pRpc->numOfThreads = pInit->numOfThreads > TSDB_MAX_RPC_THREADS ? TSDB_MAX_RPC_THREADS : pInit->numOfThreads;
--- a/source/libs/transport/src/transCli.c
+++ b/source/libs/transport/src/transCli.c
@ -24,6 +24,7 @@ typedef struct SCliConn {
  uv_connect_t connReq;
  uv_stream_t* stream;
  queue        wreqQueue;
+  uv_timer_t*  timer;

  void* hostThrd;

@ -65,12 +66,13 @@ typedef struct SCliThrd {
  int64_t       pid;     // pid
  uv_loop_t*    loop;
  SAsyncPool*   asyncPool;
-  uv_idle_t*    idle;
  uv_prepare_t* prepare;
-  uv_timer_t    timer;
  void*         pool;  // conn pool

+  SArray* timerList;
+
  // msg queue
+
  queue         msg;
  TdThreadMutex msgMtx;
  SDelayQueue*  delayQueue;
@ -108,6 +110,8 @@ static int sockDebugInfo(struct sockaddr* sockname, char* dst) {
  sprintf(dst, "%s:%d", buf, ntohs(addr.sin_port));
  return r;
 }
+// register timer for read
+static void cliReadTimeoutCb(uv_timer_t* handle);
 // register timer in each thread to clear expire conn
 // static void cliTimeoutCb(uv_timer_t* handle);
 // alloc buf for recv
@ -330,6 +334,16 @@ void cliHandleResp(SCliConn* conn) {
  SCliThrd* pThrd = conn->hostThrd;
  STrans*   pTransInst = pThrd->pTransInst;

+  if (conn->timer) {
+    if (uv_is_active((uv_handle_t*)conn->timer)) {
+      tDebug("%s conn %p stop timer", CONN_GET_INST_LABEL(conn), conn);
+      uv_timer_stop(conn->timer);
+    }
+    conn->timer->data = NULL;
+    taosArrayPush(pThrd->timerList, &conn->timer);
+    conn->timer = NULL;
+  }
+
  STransMsgHead* pHead = NULL;
  transDumpFromBuffer(&conn->readBuf, (char**)&pHead);
  pHead->code = htonl(pHead->code);
@ -409,7 +423,7 @@ void cliHandleResp(SCliConn* conn) {
  uv_read_start((uv_stream_t*)conn->stream, cliAllocRecvBufferCb, cliRecvCb);
 }

-void cliHandleExcept(SCliConn* pConn) {
+void cliHandleExceptImpl(SCliConn* pConn, int32_t code) {
  if (transQueueEmpty(&pConn->cliMsgs)) {
    if (pConn->broken == true && CONN_NO_PERSIST_BY_APP(pConn)) {
      tTrace("%s conn %p handle except, persist:0", CONN_GET_INST_LABEL(pConn), pConn);
@ -428,7 +442,7 @@ void cliHandleExcept(SCliConn* pConn) {
    STransConnCtx* pCtx = pMsg ? pMsg->ctx : NULL;

    STransMsg transMsg = {0};
-    transMsg.code = pConn->broken ? TSDB_CODE_RPC_BROKEN_LINK : TSDB_CODE_RPC_NETWORK_UNAVAIL;
+    transMsg.code = code == -1 ? (pConn->broken ? TSDB_CODE_RPC_BROKEN_LINK : TSDB_CODE_RPC_NETWORK_UNAVAIL) : code;
    transMsg.msgType = pMsg ? pMsg->msg.msgType + 1 : 0;
    transMsg.info.ahandle = NULL;

@ -459,31 +473,18 @@ void cliHandleExcept(SCliConn* pConn) {
  } while (!transQueueEmpty(&pConn->cliMsgs));
  transUnrefCliHandle(pConn);
 }
+void cliHandleExcept(SCliConn* conn) {
+  tTrace("%s conn %p except ref:%d", CONN_GET_INST_LABEL(conn), conn, T_REF_VAL_GET(conn));
+  cliHandleExceptImpl(conn, -1);
+}

-// void cliTimeoutCb(uv_timer_t* handle) {
-//   SCliThrd* pThrd = handle->data;
-//   STrans*   pTransInst = pThrd->pTransInst;
-//   int64_t   currentTime = pThrd->nextTimeout;
-//   tTrace("%s conn timeout, try to remove expire conn from conn pool", pTransInst->label);
-//
-//   SConnList* p = taosHashIterate((SHashObj*)pThrd->pool, NULL);
-//   while (p != NULL) {
-//     while (!QUEUE_IS_EMPTY(&p->conn)) {
-//       queue*    h = QUEUE_HEAD(&p->conn);
-//       SCliConn* c = QUEUE_DATA(h, SCliConn, q);
-//       if (c->expireTime < currentTime) {
-//         QUEUE_REMOVE(h);
-//         transUnrefCliHandle(c);
-//       } else {
-//         break;
-//       }
-//     }
-//     p = taosHashIterate((SHashObj*)pThrd->pool, p);
-//   }
-//
-//   pThrd->nextTimeout = taosGetTimestampMs() + CONN_PERSIST_TIME(pTransInst->idleTime);
-//   uv_timer_start(handle, cliTimeoutCb, CONN_PERSIST_TIME(pTransInst->idleTime) / 2, 0);
-// }
+void cliReadTimeoutCb(uv_timer_t* handle) {
+  // set up timeout cb
+  SCliConn* conn = handle->data;
+  tTrace("%s conn %p timeout, ref:%d", CONN_GET_INST_LABEL(conn), conn, T_REF_VAL_GET(conn));
+  uv_read_stop(conn->stream);
+  cliHandleExceptImpl(conn, TSDB_CODE_RPC_TIMEOUT);
+}

 void* createConnPool(int size) {
  // thread local, no lock
@ -654,13 +655,23 @@ static SCliConn* cliCreateConn(SCliThrd* pThrd) {
  return conn;
 }
 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);
  transRemoveExHandle(transGetRefMgt(), conn->refId);
-
  conn->refId = -1;
-  if (conn->task != NULL) transDQCancel(((SCliThrd*)conn->hostThrd)->timeoutQueue, conn->task);
+
+  if (conn->task != NULL) {
+    transDQCancel(pThrd->timeoutQueue, conn->task);
+    conn->task = NULL;
+  }
+  if (conn->timer != NULL) {
+    uv_timer_stop(conn->timer);
+    taosArrayPush(pThrd->timerList, &conn->timer);
+    conn->timer->data = NULL;
+    conn->timer = NULL;
+  }

  if (clear) {
    if (!uv_is_closing((uv_handle_t*)conn->stream)) {
@ -673,8 +684,15 @@ static void cliDestroy(uv_handle_t* handle) {
  if (uv_handle_get_type(handle) != UV_TCP || handle->data == NULL) {
    return;
  }
-
  SCliConn* conn = handle->data;
+  SCliThrd* pThrd = conn->hostThrd;
+  if (conn->timer != NULL) {
+    uv_timer_stop(conn->timer);
+    taosArrayPush(pThrd->timerList, &conn->timer);
+    conn->timer->data = NULL;
+    conn->timer = NULL;
+  }
+
  transRemoveExHandle(transGetRefMgt(), conn->refId);
  taosMemoryFree(conn->ip);
  conn->stream->data = NULL;
@ -764,6 +782,19 @@ void cliSend(SCliConn* pConn) {
    CONN_SET_PERSIST_BY_APP(pConn);
  }

+  if (pTransInst->startTimer != NULL && pTransInst->startTimer(0, pMsg->msgType)) {
+    uv_timer_t* timer = taosArrayGetSize(pThrd->timerList) > 0 ? *(uv_timer_t**)taosArrayPop(pThrd->timerList) : NULL;
+    if (timer == NULL) {
+      tDebug("no avaiable timer, create");
+      timer = taosMemoryCalloc(1, sizeof(uv_timer_t));
+      uv_timer_init(pThrd->loop, timer);
+    }
+    timer->data = pConn;
+    pConn->timer = timer;
+
+    tGTrace("%s conn %p start timer for msg:%s", CONN_GET_INST_LABEL(pConn), pConn, TMSG_INFO(pMsg->msgType));
+    uv_timer_start((uv_timer_t*)pConn->timer, cliReadTimeoutCb, TRANS_READ_TIMEOUT, 0);
+  }
  uv_write_t* req = transReqQueuePush(&pConn->wreqQueue);
  uv_write(req, (uv_stream_t*)pConn->stream, &wb, 1, cliSendCb);
  return;
@ -781,8 +812,8 @@ void cliConnCb(uv_connect_t* req, int status) {
  }
  // int addrlen = sizeof(pConn->addr);
  struct sockaddr peername, sockname;
-  int             addrlen = sizeof(peername);

+  int addrlen = sizeof(peername);
  uv_tcp_getpeername((uv_tcp_t*)pConn->stream, &peername, &addrlen);
  transGetSockDebugInfo(&peername, pConn->dst);

@ -806,7 +837,6 @@ static void cliHandleQuit(SCliMsg* pMsg, SCliThrd* pThrd) {
  tDebug("cli work thread %p start to quit", pThrd);
  destroyCmsg(pMsg);
  destroyConnPool(pThrd->pool);
-  uv_timer_stop(&pThrd->timer);
  uv_walk(pThrd->loop, cliWalkCb, NULL);
 }
 static void cliHandleRelease(SCliMsg* pMsg, SCliThrd* pThrd) {
@ -879,8 +909,8 @@ void cliMayCvtFqdnToIp(SEpSet* pEpSet, SCvtAddr* pCvtAddr) {
  }
 }
 void cliHandleReq(SCliMsg* pMsg, SCliThrd* pThrd) {
-  STransConnCtx* pCtx = pMsg->ctx;
  STrans*        pTransInst = pThrd->pTransInst;
+  STransConnCtx* pCtx = pMsg->ctx;

  cliMayCvtFqdnToIp(&pCtx->epSet, &pThrd->cvtAddr);
  if (!EPSET_IS_VALID(&pCtx->epSet)) {
@ -964,38 +994,10 @@ static void cliAsyncCb(uv_async_t* handle) {
  if (count >= 2) {
    tTrace("cli process batch size:%d", count);
  }
+  // if (!uv_is_active((uv_handle_t*)pThrd->prepare)) uv_prepare_start(pThrd->prepare, cliPrepareCb);
+
  if (pThrd->stopMsg != NULL) cliHandleQuit(pThrd->stopMsg, pThrd);
 }
-static void cliIdleCb(uv_idle_t* handle) {
-  SCliThrd* thrd = handle->data;
-  tTrace("do idle work");
-
-  SAsyncPool* pool = thrd->asyncPool;
-  for (int i = 0; i < pool->nAsync; i++) {
-    uv_async_t* async = &(pool->asyncs[i]);
-    SAsyncItem* item = async->data;
-
-    queue wq;
-    taosThreadMutexLock(&item->mtx);
-    QUEUE_MOVE(&item->qmsg, &wq);
-    taosThreadMutexUnlock(&item->mtx);
-
-    int count = 0;
-    while (!QUEUE_IS_EMPTY(&wq)) {
-      queue* h = QUEUE_HEAD(&wq);
-      QUEUE_REMOVE(h);
-
-      SCliMsg* pMsg = QUEUE_DATA(h, SCliMsg, q);
-      if (pMsg == NULL) {
-        continue;
-      }
-      (*cliAsyncHandle[pMsg->type])(pMsg, thrd);
-      count++;
-    }
-  }
-  tTrace("prepare work end");
-  if (thrd->stopMsg != NULL) cliHandleQuit(thrd->stopMsg, thrd);
-}
 static void cliPrepareCb(uv_prepare_t* handle) {
  SCliThrd* thrd = handle->data;
  tTrace("prepare work start");
@ -1085,18 +1087,19 @@ static SCliThrd* createThrdObj() {
  uv_loop_init(pThrd->loop);

  pThrd->asyncPool = transAsyncPoolCreate(pThrd->loop, 5, pThrd, cliAsyncCb);
-  uv_timer_init(pThrd->loop, &pThrd->timer);
-  pThrd->timer.data = pThrd;
-
-  // pThrd->idle = taosMemoryCalloc(1, sizeof(uv_idle_t));
-  // uv_idle_init(pThrd->loop, pThrd->idle);
-  // pThrd->idle->data = pThrd;
-  // uv_idle_start(pThrd->idle, cliIdleCb);

  pThrd->prepare = taosMemoryCalloc(1, sizeof(uv_prepare_t));
  uv_prepare_init(pThrd->loop, pThrd->prepare);
  pThrd->prepare->data = pThrd;
-  uv_prepare_start(pThrd->prepare, cliPrepareCb);
+  // uv_prepare_start(pThrd->prepare, cliPrepareCb);
+
+  int32_t timerSize = 512;
+  pThrd->timerList = taosArrayInit(timerSize, sizeof(void*));
+  for (int i = 0; i < timerSize; i++) {
+    uv_timer_t* timer = taosMemoryCalloc(1, sizeof(uv_timer_t));
+    uv_timer_init(pThrd->loop, timer);
+    taosArrayPush(pThrd->timerList, &timer);
+  }

  pThrd->pool = createConnPool(4);
  transDQCreate(pThrd->loop, &pThrd->delayQueue);
@ -1120,7 +1123,11 @@ static void destroyThrdObj(SCliThrd* pThrd) {
  transDQDestroy(pThrd->delayQueue, destroyCmsg);
  transDQDestroy(pThrd->timeoutQueue, NULL);

-  taosMemoryFree(pThrd->idle);
+  for (int i = 0; i < taosArrayGetSize(pThrd->timerList); i++) {
+    uv_timer_t* timer = taosArrayGetP(pThrd->timerList, i);
+    taosMemoryFree(timer);
+  }
+  taosArrayDestroy(pThrd->timerList);
  taosMemoryFree(pThrd->prepare);
  taosMemoryFree(pThrd->loop);
  taosMemoryFree(pThrd);
--- a/source/os/src/osAtomic.c
+++ b/source/os/src/osAtomic.c
@ -193,7 +193,13 @@ void* interlocked_sub_fetch_ptr(void* volatile* ptr, void* val) {
 }
 int32_t interlocked_fetch_sub_32(int32_t volatile* ptr, int32_t val) { return _InterlockedExchangeAdd(ptr, -val); }

-int64_t interlocked_fetch_sub_64(int64_t volatile* ptr, int64_t val) { return _InterlockedExchangeAdd64(ptr, -val); }
+int64_t interlocked_fetch_sub_64(int64_t volatile* ptr, int64_t val) { 
+#ifdef _TD_WINDOWS_32
+  return _InterlockedExchangeAdd((int32_t volatile*)ptr, -(int32_t)val); 
+#else
+  return _InterlockedExchangeAdd64(ptr, -val); 
+#endif
+}

 void* interlocked_fetch_sub_ptr(void* volatile* ptr, void* val) {
 #ifdef WINDOWS
@ -375,7 +381,11 @@ int32_t atomic_exchange_32(int32_t volatile* ptr, int32_t val) {

 int64_t atomic_exchange_64(int64_t volatile* ptr, int64_t val) {
 #ifdef WINDOWS
+#ifdef _TD_WINDOWS_32
+  return _InterlockedExchange((int32_t volatile*)(ptr), (int32_t)(val));
+#else
  return _InterlockedExchange64((int64_t volatile*)(ptr), (int64_t)(val));
+#endif
 #elif defined(_TD_NINGSI_60)
  return atomic_exchange_64_impl((int64_t*)ptr, (int64_t)val);
 #else
@ -529,7 +539,11 @@ int32_t atomic_fetch_add_32(int32_t volatile* ptr, int32_t val) {

 int64_t atomic_fetch_add_64(int64_t volatile* ptr, int64_t val) {
 #ifdef WINDOWS
+#ifdef _TD_WINDOWS_32
+  return _InterlockedExchangeAdd((int32_t volatile*)(ptr), (int32_t)(val));
+#else
  return _InterlockedExchangeAdd64((int64_t volatile*)(ptr), (int64_t)(val));
+#endif
 #elif defined(_TD_NINGSI_60)
  return __sync_fetch_and_add((ptr), (val));
 #else
@ -631,7 +645,11 @@ int32_t atomic_fetch_sub_32(int32_t volatile* ptr, int32_t val) {

 int64_t atomic_fetch_sub_64(int64_t volatile* ptr, int64_t val) {
 #ifdef WINDOWS
+#ifdef _TD_WINDOWS_32
+  return _InterlockedExchangeAdd((int32_t volatile*)(ptr), -(int32_t)(val));
+#else
  return _InterlockedExchangeAdd64((int64_t volatile*)(ptr), -(int64_t)(val));
+#endif
 #elif defined(_TD_NINGSI_60)
  return __sync_fetch_and_sub((ptr), (val));
 #else
--- a/source/os/src/osSocket.c
+++ b/source/os/src/osSocket.c
@ -333,7 +333,7 @@ int32_t taosWriteMsg(TdSocketPtr pSocket, void *buf, int32_t nbytes) {
    return -1;
  }
  int32_t nleft, nwritten;
-  char *  ptr = (char *)buf;
+  char   *ptr = (char *)buf;

  nleft = nbytes;

@ -362,7 +362,7 @@ int32_t taosReadMsg(TdSocketPtr pSocket, void *buf, int32_t nbytes) {
    return -1;
  }
  int32_t nleft, nread;
-  char *  ptr = (char *)buf;
+  char   *ptr = (char *)buf;

  nleft = nbytes;

@ -912,7 +912,7 @@ uint32_t taosGetIpv4FromFqdn(const char *fqdn) {

  int32_t ret = getaddrinfo(fqdn, NULL, &hints, &result);
  if (result) {
-    struct sockaddr *   sa = result->ai_addr;
+    struct sockaddr    *sa = result->ai_addr;
    struct sockaddr_in *si = (struct sockaddr_in *)sa;
    struct in_addr      ia = si->sin_addr;
    uint32_t            ip = ia.s_addr;
--- a/source/os/src/osString.c
+++ b/source/os/src/osString.c
@ -48,7 +48,7 @@ char *strsep(char **stringp, const char *delim) {
  /* NOTREACHED */
 }
 /* Duplicate a string, up to at most size characters */
-char *strndup(const char *s, size_t size) {
+char *strndup(const char *s, int size) {
  size_t l;
  char * s2;
  l = strlen(s);
@ -62,7 +62,7 @@ char *strndup(const char *s, size_t size) {
 }
 /* Copy no more than N characters of SRC to DEST, returning the address of
   the terminating '\0' in DEST, if any, or else DEST + N.  */
-char *stpncpy(char *dest, const char *src, size_t n) {
+char *stpncpy(char *dest, const char *src, int n) {
  size_t size = strnlen(src, n);
  memcpy(dest, src, size);
  dest += size;
--- a/source/util/src/terror.c
+++ b/source/util/src/terror.c
@ -52,6 +52,7 @@ TAOS_DEFINE_ERROR(TSDB_CODE_RPC_NETWORK_UNAVAIL,          "Unable to establish c
 TAOS_DEFINE_ERROR(TSDB_CODE_RPC_FQDN_ERROR,               "Unable to resolve FQDN")
 TAOS_DEFINE_ERROR(TSDB_CODE_RPC_PORT_EADDRINUSE,          "Port already in use")
 TAOS_DEFINE_ERROR(TSDB_CODE_RPC_BROKEN_LINK,              "Conn is broken")
+TAOS_DEFINE_ERROR(TSDB_CODE_RPC_TIMEOUT,                  "Conn read timeout")

 //common & util
 TAOS_DEFINE_ERROR(TSDB_CODE_TIME_UNSYNCED,                "Client and server's time is not synchronized")
--- a/tests/docs-examples-test/go.sh
+++ b/tests/docs-examples-test/go.sh
@ -0,0 +1,31 @@
+#!/bin/bash
+
+set -e
+
+taosd >>/dev/null 2>&1 &
+taosadapter >>/dev/null 2>&1 &
+
+cd ../../docs/examples/go
+
+go mod tidy
+
+go run ./connect/afconn/main.go
+go run ./connect/cgoexample/main.go
+go run ./connect/restexample/main.go
+
+taos -s "drop database if exists test"
+go run ./insert/json/main.go
+taos -s "drop database if exists test"
+go run ./insert/line/main.go
+taos -s "drop database if exists power"
+go run ./insert/sql/main.go
+taos -s "drop database if exists power"
+go run ./insert/stmt/main.go
+taos -s "drop database if exists test"
+go run ./insert/telnet/main.go
+
+go run ./query/sync/main.go
+
+taos -s "drop topic if exists example_tmq_topic"
+taos -s "drop database if exists example_tmq"
+go run ./sub/main.go
--- a/tests/pytest/util/sql.py
+++ b/tests/pytest/util/sql.py
@ -84,10 +84,10 @@ class TDSql:
            self.queryResult = None
            tdLog.info("sql:%s, expect error occured" % (sql))

-    def query(self, sql, row_tag=None,queyTimes=10):
+    def query(self, sql, row_tag=None,queryTimes=10):
        self.sql = sql
        i=1
-        while i <= queyTimes:
+        while i <= queryTimes:
            try:
                self.cursor.execute(sql)
                self.queryResult = self.cursor.fetchall()
@ -97,26 +97,15 @@ class TDSql:
                    return self.queryResult
                return self.queryRows
            except Exception as e:
-                i+=1
                tdLog.notice("Try to query again, query times: %d "%i)
+                if i == queryTimes:
+                    caller = inspect.getframeinfo(inspect.stack()[1][0])
+                    args = (caller.filename, caller.lineno, sql, repr(e))
+                    tdLog.notice("%s(%d) failed: sql:%s, %s" % args)
+                    raise Exception(repr(e))   
+                i+=1
                time.sleep(1)
                pass
-        else:
-            try:
-                tdLog.notice("Try the last query ")
-                self.cursor.execute(sql)
-                self.queryResult = self.cursor.fetchall()
-                self.queryRows = len(self.queryResult)
-                self.queryCols = len(self.cursor.description)
-                if row_tag:
-                    return self.queryResult
-                return self.queryRows
-            except Exception as e:
-                caller = inspect.getframeinfo(inspect.stack()[1][0])
-                args = (caller.filename, caller.lineno, sql, repr(e))
-                tdLog.notice("%s(%d) failed: sql:%s, %s" % args)
-                traceback.print_exc()
-                raise Exception(repr(e))


    def is_err_sql(self, sql):
@ -305,28 +294,23 @@ class TDSql:
                time.sleep(1)
                continue

-    def execute(self, sql,queyTimes=10):
+    def execute(self, sql,queryTimes=10):
        self.sql = sql
        i=1
-        while i <= queyTimes:
+        while i <= queryTimes:
            try:
                self.affectedRows = self.cursor.execute(sql)
                return self.affectedRows
            except Exception as e:
-                i+=1
                tdLog.notice("Try to execute sql again, query times: %d "%i)
+                if i == queryTimes:
+                    caller = inspect.getframeinfo(inspect.stack()[1][0])
+                    args = (caller.filename, caller.lineno, sql, repr(e))
+                    tdLog.notice("%s(%d) failed: sql:%s, %s" % args)
+                    raise Exception(repr(e))                    
+                i+=1
                time.sleep(1)
                pass
-        else:
-            try:
-                tdLog.notice("Try the last execute sql ")
-                self.affectedRows = self.cursor.execute(sql)
-                return self.affectedRows
-            except Exception as e:
-                caller = inspect.getframeinfo(inspect.stack()[1][0])
-                args = (caller.filename, caller.lineno, sql, repr(e))
-                tdLog.notice("%s(%d) failed: sql:%s, %s" % args)
-                raise Exception(repr(e))

    def checkAffectedRows(self, expectAffectedRows):
        if self.affectedRows != expectAffectedRows:
--- a/tests/script/jenkins/basic.txt
+++ b/tests/script/jenkins/basic.txt
@ -179,6 +179,7 @@
 ./test.sh -f tsim/query/scalarFunction.sim
 ./test.sh -f tsim/query/scalarNull.sim
 ./test.sh -f tsim/query/session.sim
+./test.sh -f tsim/query/udf.sim

 # ---- qnode
 ./test.sh -f tsim/qnode/basic1.sim
--- a/Show More
+++ b/Show More