diff --git a/.travis.yml b/.travis.yml
index 37e6e5a6c39085021995e01ad617ab8275e2116a..f9a27fdabde10c96821d307a75d52502cea656ee 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -59,17 +59,30 @@ matrix:
           GREEN_UNDERLINE='\033[4;32m'
           NC='\033[0m'
 
-          tail -10 mem-error-out.txt
-          defiMemError=`grep -m 1 'definitely lost' mem-error-out.txt | awk '{print $7}'`
-          memError=`grep -m 1 'ERROR SUMMARY' mem-error-out.txt | awk '{print $4}'`
-
-          if [ -n "$memError" ]; then
-            if [ "$memError" -gt 16 ] || [ "$defiMemError" -gt 0 ]; then
-              echo -e "${RED} ## Memory errors number valgrind reports is $memError.\
-                       Definitely lost is $defiMemError. More than our threshold! ## ${NC}"
-              travis_terminate $memError
+          grep 'ERROR SUMMARY' mem-error-out.txt | uniq | tee uniq-mem-error-out.txt
+
+          for memError in `cat uniq-mem-error-out.txt | awk '{print $4}'` 
+          do
+            if [ -n "$memError" ]; then
+              if [ "$memError" -gt 16 ]; then
+                echo -e "${RED} ## Memory errors number valgrind reports is $memError.\
+                         More than our threshold! ## ${NC}"
+                travis_terminate $memError
+              fi
             fi
-          fi
+          done
+
+          grep 'definitely lost' mem-error-out.txt | uniq | tee uniq-definitely-lost-out.txt
+          for defiMemError in `cat uniq-definitely-lost-out.txt | awk '{print $7}'` 
+          do
+            if [ -n "$defiMemError" ]; then
+              if [ "$defiMemError" -gt 16 ]; then
+                echo -e "${RED} ## Memory errors number valgrind reports \
+                         Definitely lost is $defiMemError. More than our threshold! ## ${NC}"
+                travis_terminate $defiMemError
+              fi
+            fi
+          done
 
           ;;
         esac
diff --git a/README.md b/README.md
index 280cf73ba0e8140b18e4a98902a7a58f8a72c881..158ae040fa0a95e6c2209ea71f8a3e5da6f848cc 100644
--- a/README.md
+++ b/README.md
@@ -115,6 +115,251 @@ TDengine provides abundant developing tools for users to develop on TDengine. Fo
 - [RESTful API](https://www.taosdata.com/en/documentation/connector/#RESTful-Connector)
 - [Node.js](https://www.taosdata.com/en/documentation/connector/#Node.js-Connector)
 
+# How to run the test cases and how to add a new test case?
+
+### Prepare development environment
+
+1.  sudo apt install
+    build-essential cmake net-tools python-pip python-setuptools python3-pip
+    python3-setuptools valgrind
+
+2.  git clone <https://github.com/taosdata/TDengine>; cd TDengine
+
+3.  mkdir debug; cd debug; cmake ..; make ; sudo make install
+
+4.  pip install src/connector/python/linux/python2 ; pip3 install
+    src/connector/python/linux/python3
+
+### How to run TSIM test suite
+
+1.  cd \<TDengine\>/tests/script
+
+2.  sudo ./test.sh
+
+### How to run Python test suite
+
+1.  cd \<TDengine\>/tests/pytest
+
+2.  ./smoketest.sh \# for smoke test
+
+3.  ./smoketest.sh -g \# for memory leak detection test with valgrind
+
+4.  ./fulltest.sh \# for full test
+
+>   Note1: TDengine daemon's configuration and data files are stored in
+>   \<TDengine\>/sim directory. As a historical design, it's same place with
+>   TSIM script. So after the TSIM script ran with sudo privilege, the directory
+>   has been used by TSIM then the python script cannot write it by a normal
+>   user. You need to remove the directory completely first before running the
+>   Python test case. We should consider using two different locations to store
+>   for TSIM and Python script.
+
+>   Note2: if you need to debug crash problem with a core dump, you need
+>   manually edit smoketest.sh or fulltest.sh to add "ulimit -c unlimited"
+>   before the script line. Then you can look for the core file in
+>   \<TDengine\>/tests/pytest after the program crash.
+
+### How to add a new test case
+
+**1. add a new TSIM test cases:**
+
+TSIM test cases are now included in the new development branch and can be
+added to the TDengine/tests/script/test.sh script based on the manual test
+methods necessary to add test cases as described above.
+
+**2. add a new Python test cases:**
+
+**2.1 Please refer to \<TDengine\>/tests/pytest/insert/basic.py to add a new
+test case.** The new test case must implement 3 functions, where self.init()
+and self.stop() simply copy the contents of insert/basic.py and the test
+logic is implemented in self.run(). You can refer to the code in the util
+directory for more information.
+
+**2.2 Edit smoketest.sh to add the path and filename of the new test case**
+
+Note: The Python test framework may continue to be improved in the future,
+hopefully, to provide more functionality and ease of writing test cases. The
+method of writing the test case above does not exclude that it will also be
+affected.
+
+**2.3 What test.py does in detail:**
+
+test.py is the entry program for test case execution and monitoring.
+
+test.py has the following functions.
+
+\-f --file, Specifies the test case file name to be executed
+-p --path, Specifies deployment path
+
+\-m --master, Specifies the master server IP for cluster deployment 
+-c--cluster, test cluster function
+-s--stop, terminates all running nodes
+
+\-g--valgrind, load valgrind for memory leak detection test
+
+\-h--help, display help
+
+**2.4 What util/log.py does in detail:**
+
+log.py is quite simple, the main thing is that you can print the output in
+different colors as needed. The success() should be called for successful
+test case execution and the success() will print green text. The exit() will
+print red text and exit the program, exit() should be called for test
+failure.
+
+**util/log.py**
+
+...
+
+    def info(self, info):
+
+        printf("%s %s" % (datetime.datetime.now(), info))
+
+ 
+
+    def sleep(self, sec):
+
+        printf("%s sleep %d seconds" % (datetime.datetime.now(), sec))
+
+        time.sleep(sec)
+
+ 
+
+    def debug(self, err):
+
+        printf("\\033[1;36m%s %s\\033[0m" % (datetime.datetime.now(), err))
+
+ 
+
+    def success(self, info):
+
+        printf("\\033[1;32m%s %s\\033[0m" % (datetime.datetime.now(), info))
+
+ 
+
+    def notice(self, err):
+
+        printf("\\033[1;33m%s %s\\033[0m" % (datetime.datetime.now(), err))
+
+ 
+
+    def exit(self, err):
+
+        printf("\\033[1;31m%s %s\\033[0m" % (datetime.datetime.now(), err))
+
+        sys.exit(1)
+
+ 
+
+    def printNoPrefix(self, info):
+
+        printf("\\033[1;36m%s\\033[0m" % (info)
+
+...
+
+**2.5 What util/sql.py does in detail:**
+
+SQL.py is mainly used to execute SQL statements to manipulate the database,
+and the code is extracted and commented as follows:
+
+**util/sql.py**
+
+\# prepare() is mainly used to set up the environment for testing table and
+data, and to set up the database db for testing. do not call prepare() if you
+need to test the database operation command.
+
+def prepare(self):
+
+tdLog.info("prepare database:db")
+
+self.cursor.execute('reset query cache')
+
+self.cursor.execute('drop database if exists db')
+
+self.cursor.execute('create database db')
+
+self.cursor.execute('use db')
+
+...
+
+\# query() is mainly used to execute select statements for normal syntax input
+
+def query(self, sql):
+
+...
+
+\# error() is mainly used to execute the select statement with the wrong syntax
+input, the error will be caught as a reasonable behavior, if not caught it will
+prove that the test failed
+
+def error()
+
+...
+
+\# checkRows() is used to check the number of returned lines after calling
+query(select ...) after calling the query(select ...) to check the number of
+rows of returned results.
+
+def checkRows(self, expectRows):
+
+...
+
+\# checkData() is used to check the returned result data after calling
+query(select ...) after the query(select ...) is called, failure to meet
+expectation is
+
+def checkData(self, row, col, data):
+
+...
+
+\# getData() returns the result data after calling query(select ...) to return
+the resulting data after calling query(select ...)
+
+def getData(self, row, col):
+
+...
+
+\# execute() used to execute sql and return the number of affected rows
+
+def execute(self, sql):
+
+...
+
+\# executeTimes() Multiple executions of the same sql statement
+
+def executeTimes(self, sql, times):
+
+...
+
+\# CheckAffectedRows() Check if the number of affected rows is as expected
+
+def checkAffectedRows(self, expectAffectedRows):
+
+...
+
+>   Note: Both Python2 and Python3 are currently supported by the Python test
+>   case. Since Python2 is no longer officially supported by January 1, 2020, it
+>   is recommended that subsequent test case development be guaranteed to run
+>   correctly on Python3. For Python2, please consider being compatible if
+>   appropriate without additional
+>   burden. <https://nakedsecurity.sophos.com/2020/01/03/python-is-dead-long-live-python/> 
+
+### CI Covenant submission adoption principle.
+
+-   Every commit / PR compilation must pass. Currently, the warning is treated
+    as an error, so the warning must also be resolved.
+
+-   Test cases that already exist must pass.
+
+-   Because CI is very important to support build and automatically test
+    procedure, it is necessary to manually test the test case before adding it
+    and do as many iterations as possible to ensure that the test case provides
+    stable and reliable test results when added.
+
+>   Note: In the future, according to the requirements and test development
+>   progress will add stress testing, performance testing, code style, 
+>   and other features based on functional testing.
+
 ### Third Party Connectors
 
 The TDengine community has also kindly built some of their own connectors! Follow the links below to find the source code for them.
diff --git a/src/client/src/tscServer.c b/src/client/src/tscServer.c
index 47c7d3e4affaf6687030a6bb5ea6d56ecb9f773a..6fe76cedce583978ba9cfc584e6fcbbb5cd00a0f 100644
--- a/src/client/src/tscServer.c
+++ b/src/client/src/tscServer.c
@@ -2262,7 +2262,7 @@ int tscProcessConnectRsp(SSqlObj *pSql) {
   strcpy(pObj->sversion, pConnect->serverVersion);
   pObj->writeAuth = pConnect->writeAuth;
   pObj->superAuth = pConnect->superAuth;
-//  taosTmrReset(tscProcessActivityTimer, tsShellActivityTimer * 500, pObj, tscTmr, &pObj->pTimer);
+  taosTmrReset(tscProcessActivityTimer, tsShellActivityTimer * 500, pObj, tscTmr, &pObj->pTimer);
 
   return 0;
 }
diff --git a/src/client/src/tscSql.c b/src/client/src/tscSql.c
index 922790ad70ed399fbb4146439ccd853bf6037a72..4fdd4c432378044944a1d22f7b860c302da8d5e3 100644
--- a/src/client/src/tscSql.c
+++ b/src/client/src/tscSql.c
@@ -168,6 +168,13 @@ static void syncConnCallback(void *param, TAOS_RES *tres, int code) {
 
 TAOS *taos_connect(const char *ip, const char *user, const char *pass, const char *db, uint16_t port) {
   tscTrace("try to create a connection to %s", ip);
+  if (port != 0) {
+    tsServerPort = port;
+    tsMnodeShellPort = tsServerPort + TSDB_PORT_MNODESHELL;
+    tsDnodeShellPort = tsServerPort + TSDB_PORT_DNODESHELL;
+    tsMnodeDnodePort = tsServerPort + TSDB_PORT_MNODEDNODE;
+    tsDnodeMnodePort = tsServerPort + TSDB_PORT_DNODEMNODE;
+  }
 
   STscObj *pObj = taosConnectImpl(ip, user, pass, db, port, NULL, NULL, NULL);
   if (pObj != NULL) {
diff --git a/src/common/src/tmessage.c b/src/common/src/tmessage.c
index 5a134df12904dad5e97ed132622db6463a11e831..0b6dbfdb51baa45bb968f7281514ad039ae41434 100644
--- a/src/common/src/tmessage.c
+++ b/src/common/src/tmessage.c
@@ -13,122 +13,6 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-char *taosMsg[] = {
-    "null",
-    "registration",
-    "registration-rsp",
-    "submit",
-    "submit-rsp",
-    "query",
-    "query-rsp",
-    "retrieve",
-    "retrieve-rsp",
-    "create-table",
-    "create-table-rsp",        //10
-
-    "drop-table",
-    "drop-table-rsp",
-    "alter-table",
-    "alter-table-rsp",
-    "create-vnode",
-    "create-vnode-rsp",
-    "drop-vnode",
-    "drop-vnode-rsp",
-    "alter-vnode",
-    "alter-vnode-rsp",        //20
-
-    "drop-stable",
-    "drop-stable-rsp",
-    "alter-stream",
-    "alter-stream-rsp",
-    "config-dnode",
-    "config-dnode-rsp",
-    "",
-    "",
-    "",
-    "",                        //30
-
-    "connect",
-    "connect-rsp",
-    "create-acct",
-    "create-acct-rsp",
-    "alter-acct",
-    "alter-acct-rsp",
-    "drop-acct",
-    "drop-acct-rsp",
-    "create-user",
-    "create-user-rsp",         //40
-
-    "alter-user",
-    "alter-user-rsp",
-    "drop-user",
-    "drop-user-rsp",
-    "create-dnode",
-    "create-dnode-rsp",
-    "drop-dnode",
-    "drop-dnode-rsp",
-    "create-db",
-    "create-db-rsp",          //50
-
-    "drop-db",
-    "drop-db-rsp",
-    "use-db",
-    "use-db-rsp",
-    "alter-db",
-    "alter-db-rsp",
-    "create-table",
-    "create-table-rsp",
-    "drop-table",
-    "drop-table-rsp",        //60
-
-    "alter-table",
-    "alter-table-rsp",
-    "table-meta",
-    "table-meta-rsp",
-    "super-table-meta",
-    "super-stable-meta-rsp",
-    "multi-table-meta",
-    "multi-table-meta-rsp",
-    "alter-stream",
-    "alter-stream-rsp",     //70
-
-    "show",
-    "show-rsp",
-    "kill-query",
-    "kill-query-rsp",
-    "kill-stream",
-    "kill-stream-rsp",
-    "kill-connection",
-    "kill-connectoin-rsp",
-    "heart-beat",
-    "heart-beat-rsp",      //80
-
-    "",
-    "",
-    "",
-    "",
-    "",
-    "",
-    "",
-    "",
-    "",
-    "",                    //90
-
-    "config-table",
-    "config-table-rsp",
-    "config-vnode",
-    "config-vnode-rsp",
-    "status",
-    "status-rsp",
-    "grant",
-    "grant-rsp",
-    "",
-    "",                   //100
-
-    "sdb-sync",
-    "sdb-sync-rsp",
-    "sdb-forward",
-    "sdb-forward-rsp",
-    "max"
-};
+#define TAOS_MESSAGE_C
 
+#include "taosmsg.h"
diff --git a/src/connector/python/linux/python3/taos/cinterface.py b/src/connector/python/linux/python3/taos/cinterface.py
index 77001609b61d35c746ef2ef37702aa6fb1460106..6ef54f1ba550ad22f906433801492082d599809c 100644
--- a/src/connector/python/linux/python3/taos/cinterface.py
+++ b/src/connector/python/linux/python3/taos/cinterface.py
@@ -146,6 +146,7 @@ class CTaosInterface(object):
     libtaos.taos_errstr.restype = ctypes.c_char_p
     libtaos.taos_subscribe.restype = ctypes.c_void_p
     libtaos.taos_consume.restype = ctypes.c_void_p
+    libtaos.taos_fetch_lengths.restype = ctypes.c_void_p
 
     def __init__(self, config=None):
         '''
@@ -314,6 +315,8 @@ class CTaosInterface(object):
 
         isMicro = (CTaosInterface.libtaos.taos_result_precision(result) == FieldType.C_TIMESTAMP_MICRO)
         blocks = [None] * len(fields)
+        fieldL = CTaosInterface.libtaos.taos_fetch_lengths(result)
+        fieldLen = [ele for ele in ctypes.cast(fieldL,  ctypes.POINTER(ctypes.c_int))[:len(fields)]]
         for i in range(len(fields)):
             data = ctypes.cast(pblock, ctypes.POINTER(ctypes.c_void_p))[i]
             if data == None:
@@ -323,7 +326,7 @@ class CTaosInterface(object):
             if fields[i]['type'] not in _CONVERT_FUNC:
                 raise DatabaseError("Invalid data type returned from database")
             
-            blocks[i] = _CONVERT_FUNC[fields[i]['type']](data, num_of_rows, fields[i]['bytes'], isMicro)
+            blocks[i] = _CONVERT_FUNC[fields[i]['type']](data, num_of_rows, fieldLen[i], isMicro)
 
         return blocks, abs(num_of_rows)
 
diff --git a/src/dnode/src/dnodeRead.c b/src/dnode/src/dnodeRead.c
index e52b59d20a38ad9242eb7103885b4e6a5c7691b5..efa5dc76951258dba76d5a8ff3d8370728858f41 100644
--- a/src/dnode/src/dnodeRead.c
+++ b/src/dnode/src/dnodeRead.c
@@ -74,8 +74,10 @@ void dnodeCleanupRead() {
 
   for (int i=0; i < readPool.max; ++i) {
     SReadWorker *pWorker = readPool.readWorker + i;
-    if (pWorker->thread) 
+    if (pWorker->thread) {
+      pthread_cancel(pWorker->thread);
       pthread_join(pWorker->thread, NULL);
+    }
   }
 
   taosCloseQset(readQset);
@@ -114,12 +116,12 @@ void dnodeRead(SRpcMsg *pMsg) {
     pRead->pCont       = pCont;
     pRead->contLen     = pHead->contLen;
 
-    taosWriteQitem(queue, TAOS_QTYPE_RPC, pRead);
-
     // next vnode
     leftLen -= pHead->contLen;
     pCont -= pHead->contLen;
     queuedMsgNum++;
+
+    taosWriteQitem(queue, TAOS_QTYPE_RPC, pRead);
   }
 
   if (queuedMsgNum == 0) {
diff --git a/src/dnode/src/dnodeWrite.c b/src/dnode/src/dnodeWrite.c
index 39757c690f6d460fab2378c249f9ce9786ac3e22..4ca9b1935df4584a9a5e7fe5a35eb27911c66bca 100644
--- a/src/dnode/src/dnodeWrite.c
+++ b/src/dnode/src/dnodeWrite.c
@@ -71,7 +71,10 @@ void dnodeCleanupWrite() {
   for (int32_t i = 0; i < wWorkerPool.max; ++i) {
     SWriteWorker *pWorker =  wWorkerPool.writeWorker + i;
     if (pWorker->thread) {
+      pthread_cancel(pWorker->thread);
       pthread_join(pWorker->thread, NULL);
+      taosFreeQall(pWorker->qall);
+      taosCloseQset(pWorker->qset);
     }
   }
 
diff --git a/src/inc/taoserror.h b/src/inc/taoserror.h
index c9071f4cb0c14e689583b25c1c7e2939ec4a6fb6..b5ab4412a9b4f41821b9b0fa00e303f467c4e316 100644
--- a/src/inc/taoserror.h
+++ b/src/inc/taoserror.h
@@ -115,6 +115,7 @@ TAOS_DEFINE_ERROR(TSDB_CODE_INVALID_QUERY_ID,           0, 255, "invalid query i
 TAOS_DEFINE_ERROR(TSDB_CODE_INVALID_STREAM_ID,          0, 256, "invalid stream id")
 TAOS_DEFINE_ERROR(TSDB_CODE_INVALID_CONNECTION,         0, 257, "invalid connection")
 TAOS_DEFINE_ERROR(TSDB_CODE_SDB_ERROR,                  0, 258, "sdb error")
+TAOS_DEFINE_ERROR(TSDB_CODE_TIMESTAMP_OUT_OF_RANGE,     0, 259, "timestamp is out of range")
 
 // acct
 TAOS_DEFINE_ERROR(TSDB_CODE_ACCT_ALREADY_EXIST,         0, 300, "accounts already exist")
@@ -172,6 +173,9 @@ TAOS_DEFINE_ERROR(TSDB_CODE_INVALID_VALUE,              0, 462, "invalid value")
 // others
 TAOS_DEFINE_ERROR(TSDB_CODE_INVALID_FILE_FORMAT,        0, 500, "invalid file format")
 
+// TSDB
+TAOS_DEFINE_ERROR(TSDB_CODE_INVALID_CONFIG,             0, 550, "invalid TSDB configuration")
+
 
 #ifdef TAOS_ERROR_C
 };
diff --git a/src/inc/taosmsg.h b/src/inc/taosmsg.h
index c7e21217262f4722e0ebe9d75d90b9ece87f41f2..19bd96a0637097b626609c2b2c8428bc5ba28c60 100644
--- a/src/inc/taosmsg.h
+++ b/src/inc/taosmsg.h
@@ -28,103 +28,76 @@ extern "C" {
 #include "trpc.h"
 
 // message type
-#define TSDB_MSG_TYPE_REG               1
-#define TSDB_MSG_TYPE_REG_RSP           2
-#define TSDB_MSG_TYPE_SUBMIT            3
-#define TSDB_MSG_TYPE_SUBMIT_RSP        4
-#define TSDB_MSG_TYPE_QUERY             5
-#define TSDB_MSG_TYPE_QUERY_RSP         6
-#define TSDB_MSG_TYPE_RETRIEVE          7
-#define TSDB_MSG_TYPE_RETRIEVE_RSP      8
+
+#ifdef TAOS_MESSAGE_C
+#define TAOS_DEFINE_MESSAGE_TYPE( name, msg ) msg, msg "-rsp",
+char *taosMsg[] = {
+  "null",
+#else
+#define TAOS_DEFINE_MESSAGE_TYPE( name, msg ) name, name##_RSP,
+enum {
+  TSDB_MESSAGE_NULL = 0,
+#endif
+
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_REG, "registration" )             	// 1
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_SUBMIT, "submit" )	                // 3
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_QUERY, "query" )	                  // 5
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_RETRIEVE, "retrieve" )	            // 7
 
 // message from mnode to dnode
-#define TSDB_MSG_TYPE_MD_CREATE_TABLE     9
-#define TSDB_MSG_TYPE_MD_CREATE_TABLE_RSP 10
-#define TSDB_MSG_TYPE_MD_DROP_TABLE       11
-#define TSDB_MSG_TYPE_MD_DROP_TABLE_RSP   12
-#define TSDB_MSG_TYPE_MD_ALTER_TABLE      13
-#define TSDB_MSG_TYPE_MD_ALTER_TABLE_RSP  14
-#define TSDB_MSG_TYPE_MD_CREATE_VNODE     15
-#define TSDB_MSG_TYPE_MD_CREATE_VNODE_RSP 16
-#define TSDB_MSG_TYPE_MD_DROP_VNODE       17
-#define TSDB_MSG_TYPE_MD_DROP_VNODE_RSP   18
-#define TSDB_MSG_TYPE_MD_DROP_STABLE      19
-#define TSDB_MSG_TYPE_MD_DROP_STABLE_RSP  20
-#define TSDB_MSG_TYPE_MD_ALTER_STREAM     21
-#define TSDB_MSG_TYPE_MD_ALTER_STREAM_RSP 22
-#define TSDB_MSG_TYPE_MD_CONFIG_DNODE     23
-#define TSDB_MSG_TYPE_MD_CONFIG_DNODE_RSP 24
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_MD_CREATE_TABLE, "create-table" )	  // 9
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_MD_DROP_TABLE, "drop-table" )	      // 11
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_MD_ALTER_TABLE, "alter-table" )	    // 13
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_MD_CREATE_VNODE, "create-vnode" )	  // 15
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_MD_DROP_VNODE, "drop-vnode" )	      // 17
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_MD_DROP_STABLE, "drop-stable" )	    // 19
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_MD_ALTER_STREAM, "alter-stream" )	  // 21
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_MD_CONFIG_DNODE, "config-dnode" )	  // 23
 
 // message from client to mnode
-#define TSDB_MSG_TYPE_CM_CONNECT          31
-#define TSDB_MSG_TYPE_CM_CONNECT_RSP      32
-#define TSDB_MSG_TYPE_CM_CREATE_ACCT      33
-#define TSDB_MSG_TYPE_CM_CREATE_ACCT_RSP  34
-#define TSDB_MSG_TYPE_CM_ALTER_ACCT       35
-#define TSDB_MSG_TYPE_CM_ALTER_ACCT_RSP   36
-#define TSDB_MSG_TYPE_CM_DROP_ACCT        37
-#define TSDB_MSG_TYPE_CM_DROP_ACCT_RSP    38
-#define TSDB_MSG_TYPE_CM_CREATE_USER      39
-#define TSDB_MSG_TYPE_CM_CREATE_USER_RSP  40
-#define TSDB_MSG_TYPE_CM_ALTER_USER       41
-#define TSDB_MSG_TYPE_CM_ALTER_USER_RSP   42
-#define TSDB_MSG_TYPE_CM_DROP_USER        43
-#define TSDB_MSG_TYPE_CM_DROP_USER_RSP    44
-#define TSDB_MSG_TYPE_CM_CREATE_DNODE     45
-#define TSDB_MSG_TYPE_CM_CREATE_DNODE_RSP 46
-#define TSDB_MSG_TYPE_CM_DROP_DNODE       47
-#define TSDB_MSG_TYPE_CM_DROP_DNODE_RSP   48
-#define TSDB_MSG_TYPE_CM_CONFIG_DNODE     TSDB_MSG_TYPE_MD_CONFIG_DNODE
-#define TSDB_MSG_TYPE_CM_CONFIG_DNODE_RSP TSDB_MSG_TYPE_MD_CONFIG_DNODE_RSP
-#define TSDB_MSG_TYPE_CM_CREATE_DB        49
-#define TSDB_MSG_TYPE_CM_CREATE_DB_RSP    50
-#define TSDB_MSG_TYPE_CM_DROP_DB          51
-#define TSDB_MSG_TYPE_CM_DROP_DB_RSP      52
-#define TSDB_MSG_TYPE_CM_USE_DB           53
-#define TSDB_MSG_TYPE_CM_USE_DB_RSP       54
-#define TSDB_MSG_TYPE_CM_ALTER_DB         55
-#define TSDB_MSG_TYPE_CM_ALTER_DB_RSP     56
-#define TSDB_MSG_TYPE_CM_CREATE_TABLE     57
-#define TSDB_MSG_TYPE_CM_CREATE_TABLE_RSP 58
-#define TSDB_MSG_TYPE_CM_DROP_TABLE       59
-#define TSDB_MSG_TYPE_CM_DROP_TABLE_RSP   60
-#define TSDB_MSG_TYPE_CM_ALTER_TABLE      61
-#define TSDB_MSG_TYPE_CM_ALTER_TABLE_RSP  62
-#define TSDB_MSG_TYPE_CM_TABLE_META       63
-#define TSDB_MSG_TYPE_CM_TABLE_META_RSP   64
-#define TSDB_MSG_TYPE_CM_STABLE_VGROUP    65
-#define TSDB_MSG_TYPE_CM_STABLE_VGROUP_RSP 66
-#define TSDB_MSG_TYPE_CM_TABLES_META      67
-#define TSDB_MSG_TYPE_CM_TABLES_META_RSP  68
-#define TSDB_MSG_TYPE_CM_ALTER_STREAM     69
-#define TSDB_MSG_TYPE_CM_ALTER_STREAM_RSP 70
-#define TSDB_MSG_TYPE_CM_SHOW             71
-#define TSDB_MSG_TYPE_CM_SHOW_RSP         72
-#define TSDB_MSG_TYPE_CM_KILL_QUERY       73
-#define TSDB_MSG_TYPE_CM_KILL_QUERY_RSP   74
-#define TSDB_MSG_TYPE_CM_KILL_STREAM      75
-#define TSDB_MSG_TYPE_CM_KILL_STREAM_RSP 76
-#define TSDB_MSG_TYPE_CM_KILL_CONN 77
-#define TSDB_MSG_TYPE_CM_KILL_CONN_RSP 78
-#define TSDB_MSG_TYPE_CM_HEARTBEAT 79
-#define TSDB_MSG_TYPE_CM_HEARTBEAT_RSP 80
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_CONNECT, "connect" )	            // 31
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_CREATE_ACCT, "create-acct" )	    // 33
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_ALTER_ACCT, "alter-acct" )	      // 35
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_DROP_ACCT, "drop-acct" )	        // 37
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_CREATE_USER, "create-user" )	    // 39
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_ALTER_USER, "alter-user" )	      // 41
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_DROP_USER, "drop-user" )         // 43
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_CREATE_DNODE, "create-dnode" )	  // 45
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_DROP_DNODE, "drop-dnode" )     	// 47
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_CREATE_DB, "create-db" )	        // 49
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_DROP_DB, "drop-db" )	            // 51
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_USE_DB, "use-db" )	              // 53
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_ALTER_DB, "alter-db" )	          // 55
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_CREATE_TABLE, "create-table" )	  // 57
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_DROP_TABLE, "drop-table" )	      // 59
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_ALTER_TABLE, "alter-table" )	    // 61
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_TABLE_META, "table-meta" )	      // 63
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_STABLE_VGROUP, "stable-vgroup" )	// 65
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_TABLES_META, "tables-meta" )	    // 67
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_ALTER_STREAM, "alter-stream" )	  // 69
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_SHOW, "show" )	                  // 71
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_KILL_QUERY, "kill-query" )	      // 73
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_KILL_STREAM, "kill-stream" )	    // 75
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_KILL_CONN, "kill-conn" )	        // 77
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CM_HEARTBEAT, "heartbeat" )	        // 79
 
 // message from dnode to mnode
-#define TSDB_MSG_TYPE_DM_CONFIG_TABLE 91
-#define TSDB_MSG_TYPE_DM_CONFIG_TABLE_RSP 92
-#define TSDB_MSG_TYPE_DM_CONFIG_VNODE 93
-#define TSDB_MSG_TYPE_DM_CONFIG_VNODE_RSP 94
-#define TSDB_MSG_TYPE_DM_STATUS 95
-#define TSDB_MSG_TYPE_DM_STATUS_RSP 96
-#define TSDB_MSG_TYPE_DM_GRANT 97
-#define TSDB_MSG_TYPE_DM_GRANT_RSP 98
-
-#define TSDB_MSG_TYPE_SDB_SYNC 101
-#define TSDB_MSG_TYPE_SDB_SYNC_RSP 102
-#define TSDB_MSG_TYPE_SDB_FORWARD 103
-#define TSDB_MSG_TYPE_SDB_FORWARD_RSP 104
-
-#define TSDB_MSG_TYPE_MAX 105
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DM_CONFIG_TABLE, "config-table" )	  // 91
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DM_CONFIG_VNODE, "config-vnode" )	  // 93
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DM_STATUS, "status" )	              // 95
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DM_GRANT, "grant" )	                // 97
+
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_SDB_SYNC, "sdb-sync" )	            // 101
+TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_SDB_FORWARD, "sdb-forward" )	      // 103
+
+#ifndef TAOS_MESSAGE_C
+  TSDB_MSG_TYPE_MAX  // 105
+#endif
+
+};
+
+#define TSDB_MSG_TYPE_CM_CONFIG_DNODE     TSDB_MSG_TYPE_MD_CONFIG_DNODE
+#define TSDB_MSG_TYPE_CM_CONFIG_DNODE_RSP TSDB_MSG_TYPE_MD_CONFIG_DNODE_RSP
 
 // IE type
 #define TSDB_IE_TYPE_SEC 1
diff --git a/src/kit/shell/inc/shell.h b/src/kit/shell/inc/shell.h
index 7abe8a57767da2dfe0babb483505147885f6df69..381c6f1dbfcc9f4351919b7602a26be206248f0b 100644
--- a/src/kit/shell/inc/shell.h
+++ b/src/kit/shell/inc/shell.h
@@ -61,6 +61,7 @@ struct arguments {
   int   threadNum;
   char* commands;
   int   abort;
+  int   port;
 };
 
 /**************** Function declarations ****************/
diff --git a/src/kit/shell/src/shellDarwin.c b/src/kit/shell/src/shellDarwin.c
index 13513426cdea898a550ae6ed141246e290e9e555..cd2fe6df33eb20af82c196bbe36e9dc90425a29f 100644
--- a/src/kit/shell/src/shellDarwin.c
+++ b/src/kit/shell/src/shellDarwin.c
@@ -81,7 +81,7 @@ void shellParseArgument(int argc, char *argv[], struct arguments *arguments) {
       // for management port
     else if (strcmp(argv[i], "-P") == 0) {
       if (i < argc - 1) {
-        tsMnodeShellPort = atoi(argv[++i]);
+        arguments->port = atoi(argv[++i]);
       } else {
         fprintf(stderr, "option -P requires an argument\n");
         exit(EXIT_FAILURE);
diff --git a/src/kit/shell/src/shellEngine.c b/src/kit/shell/src/shellEngine.c
index 553dbdb1b6fd3b619d18129d08ba7faa8fe0d956..69475371dcf1fee1ae1296eec9b344cdc92290a5 100644
--- a/src/kit/shell/src/shellEngine.c
+++ b/src/kit/shell/src/shellEngine.c
@@ -66,7 +66,7 @@ TAOS *shellInit(struct arguments *args) {
   tsTableMetaKeepTimer = 3000;
 
   // Connect to the database.
-  TAOS *con = taos_connect(args->host, args->user, args->password, args->database, tsMnodeShellPort);
+  TAOS *con = taos_connect(args->host, args->user, args->password, args->database, args->port);
   if (con == NULL) {
     return con;
   }
diff --git a/src/kit/shell/src/shellLinux.c b/src/kit/shell/src/shellLinux.c
index 22ffa78c8138dcf14ed384c88fec27e205dc6b47..0d9458e00c5f3060b80bc45cdf8f0d1ac234ecbd 100644
--- a/src/kit/shell/src/shellLinux.c
+++ b/src/kit/shell/src/shellLinux.c
@@ -63,7 +63,7 @@ static error_t parse_opt(int key, char *arg, struct argp_state *state) {
       break;
     case 'P':
       if (arg) {
-        tsMnodeShellPort = atoi(arg);
+        arguments->port = atoi(arg);
       } else {
         fprintf(stderr, "Invalid port\n");
         return -1;
diff --git a/src/kit/shell/src/shellWindows.c b/src/kit/shell/src/shellWindows.c
index 8863f4fa46c9b3baa6d9d390c6985ced1ce00758..ac04c593fb3fdaa569bf05ada8ac1d8c8e279ad3 100644
--- a/src/kit/shell/src/shellWindows.c
+++ b/src/kit/shell/src/shellWindows.c
@@ -61,7 +61,7 @@ void shellParseArgument(int argc, char *argv[], struct arguments *arguments) {
     // for management port
     else if (strcmp(argv[i], "-P") == 0) {
       if (i < argc - 1) {
-        tsMnodeShellPort = atoi(argv[++i]);
+        arguments->port = atoi(argv[++i]);
       } else {
         fprintf(stderr, "option -P requires an argument\n");
         exit(EXIT_FAILURE);
diff --git a/src/mnode/src/mgmtDServer.c b/src/mnode/src/mgmtDServer.c
index 726554e49028a2dd4e6a0a15afd5a21b7bedcab1..1e820be0e961620ef1f7458fc9cdca66a3c8c9aa 100644
--- a/src/mnode/src/mgmtDServer.c
+++ b/src/mnode/src/mgmtDServer.c
@@ -52,14 +52,14 @@ int32_t mgmtInitDServer() {
   rpcInit.idleTime     = tsShellActivityTimer * 1000;
   rpcInit.afp          = mgmtDServerRetrieveAuth;
 
+  tsMgmtDServerQhandle = taosInitScheduler(tsMaxShellConns, 1, "MS");
+
   tsMgmtDServerRpc = rpcOpen(&rpcInit);
   if (tsMgmtDServerRpc == NULL) {
     mError("failed to init server connection to dnode");
     return -1;
   }
 
-  tsMgmtDServerQhandle = taosInitScheduler(tsMaxShellConns, 1, "MS");
-
   mPrint("server connection to dnode is opened");
   return 0;
 }
diff --git a/src/mnode/src/mgmtDnode.c b/src/mnode/src/mgmtDnode.c
index b041d862cfe3257007eb0319be24488f41d6b0c8..bb98e1c3e6d8ef43fa0bc3ace647b70f6dd02f83 100644
--- a/src/mnode/src/mgmtDnode.c
+++ b/src/mnode/src/mgmtDnode.c
@@ -426,6 +426,7 @@ static int32_t mgmtDropDnodeByEp(char *ep) {
     return TSDB_CODE_NO_REMOVE_MASTER;
   }
 
+  mPrint("dnode:%d, start to drop it", pDnode->dnodeId);
 #ifndef _SYNC
   return mgmtDropDnode(pDnode);
 #else
diff --git a/src/mnode/src/mgmtSdb.c b/src/mnode/src/mgmtSdb.c
index 91d1a7ca74ba381a394f15439c92ca2207319fe3..e288760bf06ed1f9dc94786180e4a25536c5ddc6 100644
--- a/src/mnode/src/mgmtSdb.c
+++ b/src/mnode/src/mgmtSdb.c
@@ -143,7 +143,9 @@ static void *sdbGetTableFromId(int32_t tableId) {
 
 static int32_t sdbInitWal() {
   SWalCfg walCfg = {.walLevel = 2, .wals = 2, .keep = 1};
-  tsSdbObj.wal = walOpen(tsMnodeDir, &walCfg);
+  char temp[TSDB_FILENAME_LEN];
+  sprintf(temp, "%s/wal", tsMnodeDir);
+  tsSdbObj.wal = walOpen(temp, &walCfg);
   if (tsSdbObj.wal == NULL) {
     sdbError("failed to open sdb wal in %s", tsMnodeDir);
     return -1;
@@ -196,8 +198,7 @@ static uint32_t sdbGetFileInfo(void *ahandle, char *name, uint32_t *index, int32
 }
 
 static int sdbGetWalInfo(void *ahandle, char *name, uint32_t *index) {
-  strcpy(name, "wal0");
-  return 0;
+  return walGetWalFile(tsSdbObj.wal, name, index);
 }
 
 static void sdbNotifyRole(void *ahandle, int8_t role) {
@@ -281,7 +282,7 @@ void sdbUpdateSync() {
   syncInfo.vgId = 1;
   syncInfo.version = sdbGetVersion();
   syncInfo.syncCfg = syncCfg;
-  sprintf(syncInfo.path, "%s/", tsMnodeDir);
+  sprintf(syncInfo.path, "%s", tsMnodeDir);
   syncInfo.ahandle = NULL;
   syncInfo.getWalInfo = sdbGetWalInfo;
   syncInfo.getFileInfo = sdbGetFileInfo;
diff --git a/src/mnode/src/mgmtUser.c b/src/mnode/src/mgmtUser.c
index b4dd58cb3b5d7a9c41766de2c039c7f09ea4d39a..ecd3c217cae6af01ec1fc9a47de03a2d652377f7 100644
--- a/src/mnode/src/mgmtUser.c
+++ b/src/mnode/src/mgmtUser.c
@@ -396,7 +396,7 @@ static void mgmtProcessAlterUserMsg(SQueuedMsg *pMsg) {
       code = mgmtUpdateUser(pUser);
       mLPrint("user:%s, password is altered by %s, result:%s", pUser->user, pOperUser->user, tstrerror(code));
     } else {
-      mError("user:%s, no rights to ater user", pOperUser->user);
+      mError("user:%s, no rights to alter user", pOperUser->user);
       code = TSDB_CODE_NO_RIGHTS;
     }
 
@@ -439,13 +439,13 @@ static void mgmtProcessAlterUserMsg(SQueuedMsg *pMsg) {
       code = mgmtUpdateUser(pUser);
       mLPrint("user:%s, privilege is altered by %s, result:%s", pUser->user, pOperUser->user, tstrerror(code));
     } else {
-      mError("user:%s, no rights to ater user", pOperUser->user);
+      mError("user:%s, no rights to alter user", pOperUser->user);
       code = TSDB_CODE_NO_RIGHTS;
     }
 
     mgmtSendSimpleResp(pMsg->thandle, code);
   } else {
-    mError("user:%s, no rights to ater user", pOperUser->user);
+    mError("user:%s, no rights to alter user", pOperUser->user);
     mgmtSendSimpleResp(pMsg->thandle, TSDB_CODE_NO_RIGHTS);
   }
 
diff --git a/src/mnode/src/mgmtVgroup.c b/src/mnode/src/mgmtVgroup.c
index f48bb37b86db0a509ed94e29502c9452de6c6490..8601be39371e4551303d8cd3eb556c6b739d2458 100644
--- a/src/mnode/src/mgmtVgroup.c
+++ b/src/mnode/src/mgmtVgroup.c
@@ -160,10 +160,7 @@ static int32_t mgmtVgroupActionUpdate(SSdbOper *pOper) {
 
   mgmtDecVgroupRef(pVgroup);
 
-  mTrace("vgId:%d, is updated, numOfVnode:%d", pVgroup->vgId, pVgroup->numOfVnodes);
-  if (pDb) {
-    mTrace("tables:%d", pDb->cfg.maxTables);
-  }
+  mTrace("vgId:%d, is updated, numOfVnode:%d tables:%d", pVgroup->vgId, pVgroup->numOfVnodes, pDb == NULL ? 0 : pDb->cfg.maxTables);
   return TSDB_CODE_SUCCESS;
 }
 
diff --git a/src/rpc/src/rpcMain.c b/src/rpc/src/rpcMain.c
index d463bc3d9596abfe683d2abd232368920b6e14ea..3e4e05cd11f8daa68c0d67a4204f2e310409cd97 100644
--- a/src/rpc/src/rpcMain.c
+++ b/src/rpc/src/rpcMain.c
@@ -1364,7 +1364,7 @@ static int rpcCheckAuthentication(SRpcConn *pConn, char *msg, int msgLen) {
       }
     }
   } else {
-    tTrace("%s %p, auth spi not matched, msg discarded", pRpc->label, pConn);
+    tTrace("%s %p, auth spi:%d not matched with received:%d", pRpc->label, pConn, pConn->spi, pHead->spi);
     code = TSDB_CODE_AUTH_FAILURE;
   }
 
diff --git a/src/tsdb/inc/tsdbMain.h b/src/tsdb/inc/tsdbMain.h
index 39808ab02fd23373a14aae8027604cf4f37b026d..e056a10bbab38e423bc2e978c0a344987bebc836 100644
--- a/src/tsdb/inc/tsdbMain.h
+++ b/src/tsdb/inc/tsdbMain.h
@@ -160,6 +160,7 @@ typedef struct {
 
 typedef struct {
   int64_t index;
+  int     numOfCacheBlocks;
   SList * memPool;
 } STsdbCachePool;
 
@@ -227,13 +228,13 @@ typedef struct {
   int maxFGroups;
   int numOfFGroups;
 
-  SFileGroup fGroup[];
+  SFileGroup *fGroup;
 } STsdbFileH;
 
 #define TSDB_MIN_FILE_ID(fh) (fh)->fGroup[0].fileId
 #define TSDB_MAX_FILE_ID(fh) (fh)->fGroup[(fh)->numOfFGroups - 1].fileId
 
-STsdbFileH *tsdbInitFileH(char *dataDir, int maxFiles);
+STsdbFileH *tsdbInitFileH(char *dataDir, STsdbCfg *pCfg);
 void        tsdbCloseFileH(STsdbFileH *pFileH);
 int         tsdbCreateFile(char *dataDir, int fileId, const char *suffix, int maxTables, SFile *pFile, int writeHeader,
                            int toClose);
@@ -261,11 +262,12 @@ SFileGroup *tsdbGetFileGroupNext(SFileGroupIter *pIter);
 typedef struct {
   int32_t len;
   int32_t offset;
+  int32_t padding; // For padding purpose
   int32_t hasLast : 1;
   int32_t numOfBlocks : 31;
-  int32_t checksum;
+  int64_t uid;
   TSKEY   maxKey;
-} SCompIdx; /* sizeof(SCompIdx) = 24 */
+} SCompIdx; /* sizeof(SCompIdx) = 28 */
 
 /**
  * if numOfSubBlocks == 0, then the SCompBlock is a sub-block
@@ -485,6 +487,11 @@ int tsdbMoveLastBlockIfNeccessary(SRWHelper *pHelper);
 int tsdbWriteCompInfo(SRWHelper *pHelper);
 int tsdbWriteCompIdx(SRWHelper *pHelper);
 
+// --------- Other functions need to further organize
+void tsdbFitRetention(STsdbRepo *pRepo);
+int  tsdbAlterCacheTotalBlocks(STsdbRepo *pRepo, int totalBlocks);
+void tsdbAdjustCacheBlocks(STsdbCache *pCache);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/tsdb/src/tsdbCache.c b/src/tsdb/src/tsdbCache.c
index 9351bc602b5f34746381cbc8c712429b02a6561a..84f8a81eeaaca56b605d769545b5f1fd5e30c960 100644
--- a/src/tsdb/src/tsdbCache.c
+++ b/src/tsdb/src/tsdbCache.c
@@ -20,6 +20,7 @@
 static int  tsdbAllocBlockFromPool(STsdbCache *pCache);
 static void tsdbFreeBlockList(SList *list);
 static void tsdbFreeCacheMem(SCacheMem *mem);
+static int  tsdbAddCacheBlockToPool(STsdbCache *pCache);
 
 STsdbCache *tsdbInitCache(int cacheBlockSize, int totalBlocks, TsdbRepoT *pRepo) {
   STsdbCache *pCache = (STsdbCache *)calloc(1, sizeof(STsdbCache));
@@ -40,13 +41,7 @@ STsdbCache *tsdbInitCache(int cacheBlockSize, int totalBlocks, TsdbRepoT *pRepo)
   if (pPool->memPool == NULL) goto _err;
 
   for (int i = 0; i < totalBlocks; i++) {
-    STsdbCacheBlock *pBlock = (STsdbCacheBlock *)malloc(sizeof(STsdbCacheBlock) + cacheBlockSize);
-    if (pBlock == NULL) {
-      goto _err;
-    }
-    pBlock->offset = 0;
-    pBlock->remain = cacheBlockSize;
-    tdListAppend(pPool->memPool, (void *)(&pBlock));
+    if (tsdbAddCacheBlockToPool(pCache) < 0) goto _err;
   }
 
   pCache->mem = NULL;
@@ -142,4 +137,70 @@ static int tsdbAllocBlockFromPool(STsdbCache *pCache) {
   tsdbUnLockRepo(pCache->pRepo);
 
   return 0;
+}
+
+int tsdbAlterCacheTotalBlocks(STsdbRepo *pRepo, int totalBlocks) {
+  STsdbCache *pCache = pRepo->tsdbCache;
+  int         oldNumOfBlocks = pCache->totalCacheBlocks;
+
+  tsdbLockRepo((TsdbRepoT *)pRepo);
+
+  ASSERT(pCache->totalCacheBlocks != totalBlocks);
+
+  if (pCache->totalCacheBlocks < totalBlocks) {
+    ASSERT(pCache->totalCacheBlocks == pCache->pool.numOfCacheBlocks);
+    int blocksToAdd = pCache->totalCacheBlocks - totalBlocks;
+    pCache->totalCacheBlocks = totalBlocks;
+    for (int i = 0; i < blocksToAdd; i++) {
+      if (tsdbAddCacheBlockToPool(pCache) < 0) {
+        tsdbUnLockRepo((TsdbRepoT *)pRepo);
+        tsdbError("tsdbId %d: failed to add cache block to cache pool", pRepo->config.tsdbId);
+        return -1;
+      }
+    }
+  } else {
+    pCache->totalCacheBlocks = totalBlocks;
+    tsdbAdjustCacheBlocks(pCache);
+  }
+
+  tsdbUnLockRepo((TsdbRepoT *)pRepo);
+  tsdbTrace("tsdbId %d: tsdb total cache blocks changed from %d to %d", pRepo->config.tsdbId, oldNumOfBlocks, totalBlocks);
+  return 0;
+}
+
+static int tsdbAddCacheBlockToPool(STsdbCache *pCache) {
+  STsdbCachePool *pPool = &pCache->pool;
+
+  STsdbCacheBlock *pBlock = malloc(sizeof(STsdbCacheBlock) + pCache->cacheBlockSize);
+  if (pBlock == NULL) return -1;
+
+  pBlock->offset = 0;
+  pBlock->remain = pCache->cacheBlockSize;
+  tdListAppend(pPool->memPool, (void *)(&pBlock));
+  pPool->numOfCacheBlocks++;
+
+  return 0;
+}
+
+static int tsdbRemoveCacheBlockFromPool(STsdbCache *pCache) {
+  STsdbCachePool *pPool = &pCache->pool;
+  STsdbCacheBlock *pBlock = NULL;
+
+  ASSERT(pCache->totalCacheBlocks >= 0);
+
+  SListNode *node = tdListPopHead(pPool->memPool);
+  if (node == NULL) return -1;
+
+  tdListNodeGetData(pPool->memPool, node, &pBlock);
+  free(pBlock);
+  listNodeFree(node);
+  pPool->numOfCacheBlocks--;
+
+  return 0;
+}
+
+void tsdbAdjustCacheBlocks(STsdbCache *pCache) {
+  while (pCache->totalCacheBlocks < pCache->pool.numOfCacheBlocks) {
+    if (tsdbRemoveCacheBlockFromPool(pCache) < 0) break;
+  }
 }
\ No newline at end of file
diff --git a/src/tsdb/src/tsdbFile.c b/src/tsdb/src/tsdbFile.c
index ab76f69bedf1d289be57f7b2539ff1b9fbcac466..b1228b0230537874442f3dc6fa5d497a13c9cfa6 100644
--- a/src/tsdb/src/tsdbFile.c
+++ b/src/tsdb/src/tsdbFile.c
@@ -27,6 +27,7 @@
 #include "tchecksum.h"
 #include "tsdbMain.h"
 #include "tutil.h"
+#include "ttime.h"
 
 const char *tsdbFileSuffix[] = {
     ".head",  // TSDB_FILE_TYPE_HEAD
@@ -40,13 +41,19 @@ static int tsdbWriteFileHead(SFile *pFile);
 static int tsdbWriteHeadFileIdx(SFile *pFile, int maxTables);
 static int tsdbOpenFGroup(STsdbFileH *pFileH, char *dataDir, int fid);
 
-STsdbFileH *tsdbInitFileH(char *dataDir, int maxFiles) {
-  STsdbFileH *pFileH = (STsdbFileH *)calloc(1, sizeof(STsdbFileH) + sizeof(SFileGroup) * maxFiles);
+STsdbFileH *tsdbInitFileH(char *dataDir, STsdbCfg *pCfg) {
+  STsdbFileH *pFileH = (STsdbFileH *)calloc(1, sizeof(STsdbFileH));
   if (pFileH == NULL) {  // TODO: deal with ERROR here
     return NULL;
   }
 
-  pFileH->maxFGroups = maxFiles;
+  pFileH->maxFGroups = pCfg->keep / pCfg->daysPerFile + 3;
+
+  pFileH->fGroup = (SFileGroup *)calloc(pFileH->maxFGroups, sizeof(SFileGroup));
+  if (pFileH->fGroup == NULL) {
+    free(pFileH);
+    return NULL;
+  }
 
   DIR *dir = opendir(dataDir);
   if (dir == NULL) {
@@ -69,7 +76,12 @@ STsdbFileH *tsdbInitFileH(char *dataDir, int maxFiles) {
   return pFileH;
 }
 
-void tsdbCloseFileH(STsdbFileH *pFileH) { free(pFileH); }
+void tsdbCloseFileH(STsdbFileH *pFileH) {
+  if (pFileH) {
+    tfree(pFileH->fGroup);
+    free(pFileH);
+  }
+}
 
 static int tsdbInitFile(char *dataDir, int fid, const char *suffix, SFile *pFile) {
   tsdbGetFileName(dataDir, fid, suffix, pFile->fname);
@@ -161,6 +173,18 @@ void tsdbInitFileGroupIter(STsdbFileH *pFileH, SFileGroupIter *pIter, int direct
   }
 }
 
+void tsdbFitRetention(STsdbRepo *pRepo) {
+  STsdbFileH *pFileH = pRepo->tsdbFileH;
+  SFileGroup *pGroup = pFileH->fGroup;
+
+  int mfid =
+      tsdbGetKeyFileId(taosGetTimestamp(pRepo->config.precision), pRepo->config.daysPerFile, pRepo->config.precision);
+
+  while (pFileH->numOfFGroups > 0 && pGroup[0].fileId < mfid) {
+    tsdbRemoveFileGroup(pFileH, pGroup[0].fileId);
+  }
+}
+
 void tsdbSeekFileGroupIter(SFileGroupIter *pIter, int fid) {
   if (pIter->numOfFGroups == 0) {
     assert(pIter->pFileGroup == NULL);
@@ -252,43 +276,6 @@ int tsdbCopyBlockDataInFile(SFile *pOutFile, SFile *pInFile, SCompInfo *pCompInf
   return 0;
 }
 
-// int tsdbLoadCompIdx(SFileGroup *pGroup, void *buf, int maxTables) {
-//   SFile *pFile = &(pGroup->files[TSDB_FILE_TYPE_HEAD]);
-//   if (lseek(pFile->fd, TSDB_FILE_HEAD_SIZE, SEEK_SET) < 0) return -1;
-
-//   if (read(pFile->fd, buf, sizeof(SCompIdx) * maxTables) < 0) return -1;
-//   // TODO: need to check the correctness
-//   return 0;
-// }
-
-// int tsdbLoadCompBlocks(SFileGroup *pGroup, SCompIdx *pIdx, void *buf) {
-//   SFile *pFile = &(pGroup->files[TSDB_FILE_TYPE_HEAD]);
-
-//   if (lseek(pFile->fd, pIdx->offset, SEEK_SET) < 0) return -1;
-
-//   if (read(pFile->fd, buf, pIdx->len) < 0) return -1;
-
-//   // TODO: need to check the correctness
-
-//   return 0;
-// }
-
-// int tsdbLoadCompCols(SFile *pFile, SCompBlock *pBlock, void *buf) {
-//   // assert(pBlock->numOfSubBlocks == 0 || pBlock->numOfSubBlocks == 1);
-
-//   if (lseek(pFile->fd, pBlock->offset, SEEK_SET) < 0) return -1;
-//   size_t size = sizeof(SCompData) + sizeof(SCompCol) * pBlock->numOfCols;
-//   if (read(pFile->fd, buf, size) < 0) return -1;
-
-//   return 0;
-// }
-
-// int tsdbLoadColData(SFile *pFile, SCompCol *pCol, int64_t blockBaseOffset, void *buf) {
-//   if (lseek(pFile->fd, blockBaseOffset + pCol->offset, SEEK_SET) < 0) return -1;
-//   if (read(pFile->fd, buf, pCol->len) < 0) return -1;
-//   return 0;
-// }
-
 static int compFGroupKey(const void *key, const void *fgroup) {
   int         fid = *(int *)key;
   SFileGroup *pFGroup = (SFileGroup *)fgroup;
diff --git a/src/tsdb/src/tsdbMain.c b/src/tsdb/src/tsdbMain.c
index b1ef3d2d9ce38e0c0e0347ac9d1c6b9a61905cb3..3f41a3c5fe71f8e9986321808ccde0a5b3f2bed1 100644
--- a/src/tsdb/src/tsdbMain.c
+++ b/src/tsdb/src/tsdbMain.c
@@ -6,6 +6,7 @@
 #include "tsdbMain.h"
 #include "tscompression.h"
 #include "tchecksum.h"
+#include "ttime.h"
 
 int tsdbDebugFlag = 135;
 
@@ -27,7 +28,7 @@ static int32_t tsdbCheckAndSetDefaultCfg(STsdbCfg *pCfg);
 static int32_t tsdbSetRepoEnv(STsdbRepo *pRepo);
 static int32_t tsdbDestroyRepoEnv(STsdbRepo *pRepo);
 // static int     tsdbOpenMetaFile(char *tsdbDir);
-static int32_t tsdbInsertDataToTable(TsdbRepoT *repo, SSubmitBlk *pBlock);
+static int32_t tsdbInsertDataToTable(TsdbRepoT *repo, SSubmitBlk *pBlock, TSKEY now);
 static int32_t tsdbRestoreCfg(STsdbRepo *pRepo, STsdbCfg *pCfg);
 static int32_t tsdbGetDataDirName(STsdbRepo *pRepo, char *fname);
 static void *  tsdbCommitData(void *arg);
@@ -35,8 +36,9 @@ static int     tsdbCommitToFile(STsdbRepo *pRepo, int fid, SSkipListIterator **i
                                 SDataCols *pDataCols);
 static TSKEY   tsdbNextIterKey(SSkipListIterator *pIter);
 static int     tsdbHasDataToCommit(SSkipListIterator **iters, int nIters, TSKEY minKey, TSKEY maxKey);
-// static int tsdbWriteBlockToFileImpl(SFile *pFile, SDataCols *pCols, int pointsToWrite, int64_t *offset, int32_t *len,
-//                                     int64_t uid);
+static void    tsdbAlterCompression(STsdbRepo *pRepo, int8_t compression);
+static void    tsdbAlterKeep(STsdbRepo *pRepo, int32_t keep);
+static void tsdbAlterMaxTables(STsdbRepo *pRepo, int32_t maxTables);
 
 #define TSDB_GET_TABLE_BY_ID(pRepo, sid) (((STSDBRepo *)pRepo)->pTableList)[sid]
 #define TSDB_GET_TABLE_BY_NAME(pRepo, name)
@@ -214,7 +216,7 @@ TsdbRepoT *tsdbOpenRepo(char *tsdbDir, STsdbAppH *pAppH) {
   }
 
   tsdbGetDataDirName(pRepo, dataDir);
-  pRepo->tsdbFileH = tsdbInitFileH(dataDir, pRepo->config.maxTables);
+  pRepo->tsdbFileH = tsdbInitFileH(dataDir, &(pRepo->config));
   if (pRepo->tsdbFileH == NULL) {
     tsdbFreeCache(pRepo->tsdbCache);
     tsdbFreeMeta(pRepo->tsdbMeta);
@@ -297,10 +299,23 @@ int32_t tsdbCloseRepo(TsdbRepoT *repo) {
  */
 int32_t tsdbConfigRepo(TsdbRepoT *repo, STsdbCfg *pCfg) {
   STsdbRepo *pRepo = (STsdbRepo *)repo;
+  STsdbCfg * pRCfg = &pRepo->config;
 
-  pRepo->config = *pCfg;
-  // TODO
-  return 0;
+  if (tsdbCheckAndSetDefaultCfg(pCfg) < 0) return TSDB_CODE_INVALID_CONFIG;
+
+  ASSERT(pRCfg->tsdbId == pCfg->tsdbId);
+  ASSERT(pRCfg->cacheBlockSize == pCfg->cacheBlockSize);
+  ASSERT(pRCfg->daysPerFile == pCfg->daysPerFile);
+  ASSERT(pRCfg->minRowsPerFileBlock == pCfg->minRowsPerFileBlock);
+  ASSERT(pRCfg->maxRowsPerFileBlock == pCfg->maxRowsPerFileBlock);
+  ASSERT(pRCfg->precision == pCfg->precision);
+
+  if (pRCfg->compression != pCfg->compression) tsdbAlterCompression(pRepo, pCfg->compression);
+  if (pRCfg->keep != pCfg->keep) tsdbAlterKeep(pRepo, pCfg->keep);
+  if (pRCfg->totalBlocks != pCfg->totalBlocks) tsdbAlterCacheTotalBlocks(pRepo, pCfg->totalBlocks);
+  if (pRCfg->maxTables != pCfg->maxTables) tsdbAlterMaxTables(pRepo, pCfg->maxTables);
+
+  return TSDB_CODE_SUCCESS;
 }
 
 int32_t tsdbTriggerCommit(TsdbRepoT *repo) {
@@ -394,13 +409,16 @@ STableInfo *tsdbGetTableInfo(TsdbRepoT *pRepo, STableId tableId) {
 // TODO: need to return the number of data inserted
 int32_t tsdbInsertData(TsdbRepoT *repo, SSubmitMsg *pMsg) {
   SSubmitMsgIter msgIter;
+  STsdbRepo *pRepo = (STsdbRepo *)repo;
 
   tsdbInitSubmitMsgIter(pMsg, &msgIter);
   SSubmitBlk *pBlock = NULL;
   int32_t code = TSDB_CODE_SUCCESS;
-  
+
+  TSKEY now = taosGetTimestamp(pRepo->config.precision);
+
   while ((pBlock = tsdbGetSubmitMsgNext(&msgIter)) != NULL) {
-    if ((code = tsdbInsertDataToTable(repo, pBlock)) != TSDB_CODE_SUCCESS) {
+    if ((code = tsdbInsertDataToTable(repo, pBlock, now)) != TSDB_CODE_SUCCESS) {
       return code;
     }
   }
@@ -787,21 +805,31 @@ static int32_t tdInsertRowToTable(STsdbRepo *pRepo, SDataRow row, STable *pTable
   return 0;
 }
 
-static int32_t tsdbInsertDataToTable(TsdbRepoT *repo, SSubmitBlk *pBlock) {
+static int32_t tsdbInsertDataToTable(TsdbRepoT *repo, SSubmitBlk *pBlock, TSKEY now) {
   STsdbRepo *pRepo = (STsdbRepo *)repo;
 
   STableId tableId = {.uid = pBlock->uid, .tid = pBlock->tid};
   STable *pTable = tsdbIsValidTableToInsert(pRepo->tsdbMeta, tableId);
   if (pTable == NULL) {
-    uError("failed to get table for insert, uid:%" PRIu64 ", tid:%d", tableId.uid, tableId.tid);
+    tsdbError("failed to get table for insert, uid:%" PRIu64 ", tid:%d", tableId.uid, tableId.tid);
     return TSDB_CODE_INVALID_TABLE_ID;
   }
 
-  SSubmitBlkIter blkIter;
-  SDataRow row;
+  SSubmitBlkIter blkIter = {0};
+  SDataRow row = NULL;
+
+  TSKEY minKey = now - tsMsPerDay[pRepo->config.precision] * pRepo->config.keep;
+  TSKEY maxKey = now + tsMsPerDay[pRepo->config.precision] * pRepo->config.daysPerFile;
 
   tsdbInitSubmitBlkIter(pBlock, &blkIter);
   while ((row = tsdbGetSubmitBlkNext(&blkIter)) != NULL) {
+    if (dataRowKey(row) < minKey || dataRowKey(row) > maxKey) {
+      tsdbError(
+          "tsdbId: %d, table tid: %d, talbe uid: %ld timestamp is out of range. now: %ld maxKey: %ld, minKey: %ld",
+          pRepo->config.tsdbId, pTable->tableId.tid, pTable->tableId.uid, now, minKey, maxKey);
+      return TSDB_CODE_TIMESTAMP_OUT_OF_RANGE;
+    }
+
     if (tdInsertRowToTable(pRepo, row, pTable) < 0) {
       return -1;
     }
@@ -903,6 +931,9 @@ static void *tsdbCommitData(void *arg) {
     }
   }
 
+  // Do retention actions
+  tsdbFitRetention(pRepo);
+
 _exit:
   tdFreeDataCols(pDataCols);
   tsdbDestroyTableIters(iters, pCfg->maxTables);
@@ -910,6 +941,7 @@ _exit:
 
   tsdbLockRepo(arg);
   tdListMove(pCache->imem->list, pCache->pool.memPool);
+  tsdbAdjustCacheBlocks(pCache);
   tdListFree(pCache->imem->list);
   free(pCache->imem);
   pCache->imem = NULL;
@@ -1028,4 +1060,27 @@ static int tsdbHasDataToCommit(SSkipListIterator **iters, int nIters, TSKEY minK
     if (nextKey > 0 && (nextKey >= minKey && nextKey <= maxKey)) return 1;
   }
   return 0;
+}
+
+static void tsdbAlterCompression(STsdbRepo *pRepo, int8_t compression) {
+  pRepo->config.compression = compression;
+}
+
+static void tsdbAlterKeep(STsdbRepo *pRepo, int32_t keep) {
+  STsdbCfg *pCfg = &pRepo->config;
+
+  int maxFiles = keep / pCfg->maxTables + 3;
+  if (pRepo->config.keep > keep) {
+    pRepo->tsdbFileH->maxFGroups = maxFiles;
+  } else {
+    pRepo->tsdbFileH->fGroup = realloc(pRepo->tsdbFileH->fGroup, sizeof(SFileGroup));
+    if (pRepo->tsdbFileH->fGroup == NULL) {
+      // TODO: deal with the error
+    }
+    pRepo->tsdbFileH->maxFGroups = maxFiles;
+  }
+}
+
+static void tsdbAlterMaxTables(STsdbRepo *pRepo, int32_t maxTables) {
+  // TODO
 }
\ No newline at end of file
diff --git a/src/tsdb/src/tsdbRWHelper.c b/src/tsdb/src/tsdbRWHelper.c
index 653379e03b1154cf95fab271286996f68fce170d..e32a64629678a4d16a54885ccb9184a09a50a15a 100644
--- a/src/tsdb/src/tsdbRWHelper.c
+++ b/src/tsdb/src/tsdbRWHelper.c
@@ -414,6 +414,7 @@ int tsdbWriteCompInfo(SRWHelper *pHelper) {
     ASSERT((pIdx->len - sizeof(SCompInfo) - sizeof(TSCKSUM)) % sizeof(SCompBlock) == 0);
     taosCalcChecksumAppend(0, (uint8_t *)pHelper->pCompInfo, pIdx->len);
     pIdx->offset = lseek(pHelper->files.nHeadF.fd, 0, SEEK_END);
+    pIdx->uid = pHelper->tableInfo.uid;
     if (pIdx->offset < 0) return -1;
     ASSERT(pIdx->offset >= tsizeof(pHelper->pCompIdx));
 
diff --git a/src/util/inc/ttime.h b/src/util/inc/ttime.h
index 34c241cbc0f22afc511660cee475c82d08466599..61df65f345afc3085890cdcb8396ddba6a2fe857 100644
--- a/src/util/inc/ttime.h
+++ b/src/util/inc/ttime.h
@@ -22,22 +22,37 @@ extern "C" {
 
 #include <stdint.h>
 #include <time.h>
+#include "tutil.h"
 
 //@return timestamp in second
 int32_t taosGetTimestampSec();
 
 //@return timestamp in millisecond
-int64_t taosGetTimestampMs();
+static FORCE_INLINE int64_t taosGetTimestampMs() {
+  struct timeval systemTime;
+  gettimeofday(&systemTime, NULL);
+  return (int64_t)systemTime.tv_sec * 1000L + (uint64_t)systemTime.tv_usec / 1000;
+}
 
 //@return timestamp in microsecond
-int64_t taosGetTimestampUs();
+static FORCE_INLINE int64_t taosGetTimestampUs() {
+  struct timeval systemTime;
+  gettimeofday(&systemTime, NULL);
+  return (int64_t)systemTime.tv_sec * 1000000L + (uint64_t)systemTime.tv_usec;
+}
 
 /*
  * @return timestamp decided by global conf variable, tsTimePrecision
  * if precision == TSDB_TIME_PRECISION_MICRO, it returns timestamp in microsecond.
  *    precision == TSDB_TIME_PRECISION_MILLI, it returns timestamp in millisecond.
  */
-int64_t taosGetTimestamp(int32_t precision);
+static FORCE_INLINE int64_t taosGetTimestamp(int32_t precision) {
+  if (precision == TSDB_TIME_PRECISION_MICRO) {
+    return taosGetTimestampUs();
+  } else {
+    return taosGetTimestampMs();
+  }
+}
 
 int32_t getTimestampInUsFromStr(char* token, int32_t tokenlen, int64_t* ts);
 
diff --git a/src/util/src/tqueue.c b/src/util/src/tqueue.c
index c639452823438257b62fbfc8adef96bca94ecf8b..a458cefc9c9c703ffb2144fb95161d5892431ec8 100644
--- a/src/util/src/tqueue.c
+++ b/src/util/src/tqueue.c
@@ -41,6 +41,7 @@ typedef struct _taos_qset {
   pthread_mutex_t    mutex;
   int32_t            numOfQueues;
   int32_t            numOfItems;
+  tsem_t             sem;
 } STaosQset;
 
 typedef struct _taos_qall {
@@ -59,6 +60,7 @@ taos_queue taosOpenQueue() {
   }
 
   pthread_mutex_init(&queue->mutex, NULL);
+
   return queue;
 }
 
@@ -79,7 +81,7 @@ void taosCloseQueue(taos_queue param) {
   }
 
   pthread_mutex_unlock(&queue->mutex);
-
+  pthread_mutex_destroy(&queue->mutex);
   free(queue);
 }
 
@@ -116,11 +118,12 @@ int taosWriteQitem(taos_queue param, int type, void *item) {
 
   queue->numOfItems++;
   if (queue->qset) atomic_add_fetch_32(&queue->qset->numOfItems, 1);
-
   uTrace("item:%p is put into queue:%p, type:%d items:%d", item, queue, type, queue->numOfItems);
 
   pthread_mutex_unlock(&queue->mutex);
 
+  if (queue->qset) tsem_post(&queue->qset->sem);
+
   return 0;
 }
 
@@ -217,12 +220,15 @@ taos_qset taosOpenQset() {
   }
 
   pthread_mutex_init(&qset->mutex, NULL);
+  tsem_init(&qset->sem, 0, 0);
 
   return qset;
 }
 
 void taosCloseQset(taos_qset param) {
   STaosQset *qset = (STaosQset *)param;
+  pthread_mutex_destroy(&qset->mutex);
+  tsem_destroy(&qset->sem);
   free(qset);
 }
 
@@ -298,6 +304,8 @@ int taosReadQitemFromQset(taos_qset param, int *type, void **pitem, void **phand
   STaosQnode *pNode = NULL;
   int         code = 0;
    
+  tsem_wait(&qset->sem);
+
   pthread_mutex_lock(&qset->mutex);
 
   for(int i=0; i<qset->numOfQueues; ++i) {
@@ -339,6 +347,7 @@ int taosReadAllQitemsFromQset(taos_qset param, taos_qall p2, void **phandle) {
   STaosQall  *qall = (STaosQall *)p2;
   int         code = 0;
 
+  tsem_wait(&qset->sem);
   pthread_mutex_lock(&qset->mutex);
 
   for(int i=0; i<qset->numOfQueues; ++i) {
@@ -364,6 +373,7 @@ int taosReadAllQitemsFromQset(taos_qset param, taos_qall p2, void **phandle) {
       queue->tail = NULL;
       queue->numOfItems = 0;
       atomic_sub_fetch_32(&qset->numOfItems, qall->numOfItems);
+      for (int j=1; j<qall->numOfItems; ++j) tsem_wait(&qset->sem);
     } 
 
     pthread_mutex_unlock(&queue->mutex);
diff --git a/src/util/src/ttime.c b/src/util/src/ttime.c
index 015cb19606ff11b5ddb857a1fc11299f224afd16..d34bf0e6ce922a09eb9941bb8cac9c98141a68cc 100644
--- a/src/util/src/ttime.c
+++ b/src/util/src/ttime.c
@@ -121,30 +121,6 @@ static int32_t parseLocaltime(char* timestr, int64_t* time, int32_t timePrec);
 
 int32_t taosGetTimestampSec() { return (int32_t)time(NULL); }
 
-int64_t taosGetTimestampMs() {
-  struct timeval systemTime;
-  gettimeofday(&systemTime, NULL);
-  return (int64_t)systemTime.tv_sec * 1000L + (uint64_t)systemTime.tv_usec / 1000;
-}
-
-int64_t taosGetTimestampUs() {
-  struct timeval systemTime;
-  gettimeofday(&systemTime, NULL);
-  return (int64_t)systemTime.tv_sec * 1000000L + (uint64_t)systemTime.tv_usec;
-}
-
-/*
- * If tsTimePrecision == 1, taosGetTimestamp will return timestamp in microsecond.
- * Otherwise, it will return timestamp in millisecond.
- */
-int64_t taosGetTimestamp(int32_t precision) {
-  if (precision == TSDB_TIME_PRECISION_MICRO) {
-    return taosGetTimestampUs();
-  } else {
-    return taosGetTimestampMs();
-  }
-}
-
 int32_t taosParseTime(char* timestr, int64_t* time, int32_t len, int32_t timePrec) {
   /* parse datatime string in with tz */
   if (strnchr(timestr, 'T', len, false) != NULL) {
diff --git a/src/vnode/src/vnodeMain.c b/src/vnode/src/vnodeMain.c
index c305ff0665588684d8ffc11e52315e3bd78fd2fa..f5d7bd45a74233c9245a1bcc47aa9ef50b18e781 100644
--- a/src/vnode/src/vnodeMain.c
+++ b/src/vnode/src/vnodeMain.c
@@ -184,6 +184,7 @@ int32_t vnodeOpen(int32_t vnode, char *rootDir) {
   pVnode->status   = TAOS_VN_STATUS_INIT;
   pVnode->refCount = 1;
   pVnode->version  = 0;  
+  pVnode->tsdbCfg.tsdbId = pVnode->vgId;
   taosAddIntHash(tsDnodeVnodesHash, pVnode->vgId, (char *)(&pVnode));
   
   int32_t code = vnodeReadCfg(pVnode);
diff --git a/src/vnode/src/vnodeWrite.c b/src/vnode/src/vnodeWrite.c
index 2f49280cb6af32fc308a59a7820bcde8993f444f..3541fc15b649c64dbb411c1b03b0763e3d329f67 100644
--- a/src/vnode/src/vnodeWrite.c
+++ b/src/vnode/src/vnodeWrite.c
@@ -111,11 +111,13 @@ static int32_t vnodeProcessCreateTableMsg(SVnodeObj *pVnode, void *pCont, SRspRe
   int32_t code = 0;
 
   dTrace("pVnode:%p vgId:%d, table:%s, start to create", pVnode, pVnode->vgId, pTable->tableId);
-  int16_t numOfColumns  = htons(pTable->numOfColumns);
-  int16_t numOfTags     = htons(pTable->numOfTags);
-  int32_t sid           = htonl(pTable->sid);
-  uint64_t uid           = htobe64(pTable->uid);
-  SSchema *pSchema = (SSchema *) pTable->data;
+  int16_t   numOfColumns = htons(pTable->numOfColumns);
+  int16_t   numOfTags = htons(pTable->numOfTags);
+  int32_t   sid = htonl(pTable->sid);
+  uint64_t  uid = htobe64(pTable->uid);
+  SSchema * pSchema = (SSchema *)pTable->data;
+  STSchema *pDestTagSchema = NULL;
+  SDataRow  dataRow = NULL;
 
   int32_t totalCols = numOfColumns + numOfTags;
   
@@ -130,7 +132,7 @@ static int32_t vnodeProcessCreateTableMsg(SVnodeObj *pVnode, void *pCont, SRspRe
   tsdbTableSetName(&tCfg, pTable->tableId, false);
 
   if (numOfTags != 0) {
-    STSchema *pDestTagSchema = tdNewSchema(numOfTags);
+    pDestTagSchema = tdNewSchema(numOfTags);
     for (int i = numOfColumns; i < totalCols; i++) {
       tdSchemaAddCol(pDestTagSchema, pSchema[i].type, htons(pSchema[i].colId), htons(pSchema[i].bytes));
     }
@@ -140,7 +142,7 @@ static int32_t vnodeProcessCreateTableMsg(SVnodeObj *pVnode, void *pCont, SRspRe
     
     char *pTagData = pTable->data + totalCols * sizeof(SSchema);
     int accumBytes = 0;
-    SDataRow dataRow = tdNewDataRowFromSchema(pDestTagSchema);
+    dataRow = tdNewDataRowFromSchema(pDestTagSchema);
 
     for (int i = 0; i < numOfTags; i++) {
       STColumn *pTCol = schemaColAt(pDestTagSchema, i);
@@ -151,6 +153,8 @@ static int32_t vnodeProcessCreateTableMsg(SVnodeObj *pVnode, void *pCont, SRspRe
   }
 
   code = tsdbCreateTable(pVnode->tsdb, &tCfg);
+  tdFreeDataRow(dataRow);
+  tfree(pDestTagSchema);
   tfree(pDestSchema);
 
   dTrace("pVnode:%p vgId:%d, table:%s is created, result:%x", pVnode, pVnode->vgId, pTable->tableId, code);
diff --git a/tests/pytest/insert/binary.py b/tests/pytest/insert/binary.py
index 9989865f96af21d5d806c42660a79f1be62b5b4c..e254fb1438b7d7363dd2edb695087c95c2b10a91 100644
--- a/tests/pytest/insert/binary.py
+++ b/tests/pytest/insert/binary.py
@@ -27,8 +27,8 @@ class TDTestCase:
         tdSql.query('select speed from tb order by ts desc')
         tdLog.info('tdSql.checkRow(1)')
         tdSql.checkRows(1)
-        tdLog.info('tdSql.checkData(0, 0, 1234)')
-        tdSql.checkData(0, 0, 1234)
+        tdLog.info("tdSql.checkData(0, 0, '1234')")
+        tdSql.checkData(0, 0, '1234')
         tdLog.info('=============== step3')
         tdLog.info("insert into tb values (now+2a, '23456')")
         tdSql.execute("insert into tb values (now+2a, '23456')")
@@ -37,8 +37,8 @@ class TDTestCase:
         tdLog.info('tdSql.checkRow(2)')
         tdSql.checkRows(2)
         tdLog.info('==> $data00')
-        tdLog.info('tdSql.checkData(0, 0, 23456)')
-        tdSql.checkData(0, 0, 23456)
+        tdLog.info("tdSql.checkData(0, 0, '23456')")
+        tdSql.checkData(0, 0, '23456')
         tdLog.info('=============== step4')
         tdLog.info("insert into tb values (now+3a, '345678')")
         tdSql.error("insert into tb values (now+3a, '345678')")
@@ -49,8 +49,8 @@ class TDTestCase:
         tdLog.info('tdSql.checkRow(3)')
         tdSql.checkRows(3)
         tdLog.info('==> $data00')
-        tdLog.info('tdSql.checkData(0, 0, 34567)')
-        tdSql.checkData(0, 0, 34567)
+        tdLog.info("tdSql.checkData(0, 0, '34567')")
+        tdSql.checkData(0, 0, '34567')
         tdLog.info('drop database db')
         tdSql.execute('drop database db')
         tdLog.info('show databases')
diff --git a/tests/pytest/util/sql.py b/tests/pytest/util/sql.py
index a1f7dd2f6468be7dee1d23e3d64d6070e7540e28..0e7e186206b85f38babe3a9c0aceb42c996c0820 100644
--- a/tests/pytest/util/sql.py
+++ b/tests/pytest/util/sql.py
@@ -93,6 +93,9 @@ class TDSql:
         if data is None:
             tdLog.info("sql:%.40s, row:%d col:%d data:%s == expect:%s" %
                        (self.sql, row, col, self.queryResult[row][col], data))
+        elif isinstance(data, str):
+            tdLog.info("sql:%.40s, row:%d col:%d data:%s == expect:%s" %
+                       (self.sql, row, col, self.queryResult[row][col], data))
         elif isinstance(data, datetime.date):
             tdLog.info("sql:%.40s, row:%d col:%d data:%s == expect:%s" %
                        (self.sql, row, col, self.queryResult[row][col], data))
diff --git a/tests/script/jenkins/basic.txt b/tests/script/jenkins/basic.txt
new file mode 100644
index 0000000000000000000000000000000000000000..81f6bc55f79a43726b704ff3a261b32d2c053a3a
--- /dev/null
+++ b/tests/script/jenkins/basic.txt
@@ -0,0 +1,63 @@
+cd ../../debug; cmake ..
+#cd ../../debug; make clean
+cd ../../debug; make
+
+cd ../../../debug; cmake ..
+#cd ../../../debug; make clean
+cd ../../../debug; make
+
+./test.sh -u -f unique/account/account_create.sim
+./test.sh -u -f unique/account/account_delete.sim
+./test.sh -u -f unique/account/account_len.sim
+./test.sh -u -f unique/account/authority.sim
+./test.sh -u -f unique/account/basic.sim
+./test.sh -u -f unique/account/paras.sim
+./test.sh -u -f unique/account/pass_alter.sim
+./test.sh -u -f unique/account/pass_len.sim
+./test.sh -u -f unique/account/usage.sim
+./test.sh -u -f unique/account/user_create.sim
+./test.sh -u -f unique/account/user_len.sim
+
+#big
+
+./test.sh -u -f unique/cluster/balance1.sim
+./test.sh -u -f unique/cluster/balance2.sim
+./test.sh -u -f unique/cluster/balance3.sim
+
+./test.sh -u -f unique/column/replica3.sim
+
+./test.sh -u -f unique/db/replica_add12.sim
+./test.sh -u -f unique/db/replica_add13.sim
+./test.sh -u -f unique/db/replica_add23.sim
+./test.sh -u -f unique/db/replica_reduce21.sim
+./test.sh -u -f unique/db/replica_reduce32.sim
+./test.sh -u -f unique/db/replica_reduce31.sim
+./test.sh -u -f unique/db/replica_part.sim
+
+./test.sh -u -f unique/dnode/balance1.sim
+./test.sh -u -f unique/dnode/balance2.sim
+./test.sh -u -f unique/dnode/balance3.sim
+./test.sh -u -f unique/dnode/balancex.sim
+./test.sh -u -f unique/dnode/offline1.sim
+./test.sh -u -f unique/dnode/offline2.sim
+
+./test.sh -u -f unique/http/admin.sim
+
+#import
+
+#metrics
+
+./test.sh -u -f unique/mnode/mgmt22.sim
+./test.sh -u -f unique/mnode/mgmt23.sim
+./test.sh -u -f unique/mnode/mgmt24.sim
+./test.sh -u -f unique/mnode/mgmt25.sim
+./test.sh -u -f unique/mnode/mgmt26.sim
+./test.sh -u -f unique/mnode/mgmt33.sim
+./test.sh -u -f unique/mnode/mgmt34.sim
+
+#stream
+
+#table
+
+./test.sh -u -f unique/vnode/replica2_basic2.sim
+./test.sh -u -f unique/vnode/replica3_basic.sim
\ No newline at end of file
diff --git a/tests/script/jenkins/basic1.txt b/tests/script/jenkins/basic1.txt
deleted file mode 100644
index ef6d4e239b90879f7899bb22e54aa1b60e072266..0000000000000000000000000000000000000000
--- a/tests/script/jenkins/basic1.txt
+++ /dev/null
@@ -1,11 +0,0 @@
-./test.sh -f general/user/basic1.sim
-
-./test.sh -f general/db/basic1.sim
-./test.sh -f general/db/basic2.sim
-./test.sh -f general/db/basic3.sim
-./test.sh -f general/db/basic4.sim
-./test.sh -f general/db/basic5.sim
-
-./test.sh -f general/table/basic1.sim
-./test.sh -f general/table/basic2.sim
-./test.sh -f general/table/basic3.sim
\ No newline at end of file
diff --git a/tests/script/unique/account/authority.sim b/tests/script/unique/account/authority.sim
index e6532458f0a83580ada801daed0829b8eaf398b0..4198f2c3335680b9da6b7514da6510f23a524798 100644
--- a/tests/script/unique/account/authority.sim
+++ b/tests/script/unique/account/authority.sim
@@ -227,7 +227,8 @@ print ============= step6
 sql close
 sql connect owrite
 sleep 2000
-
+sql reset query cache
+sleep 1000
 sql create database d1
 sql create database d3
 sql create table d1.t1 (ts timestamp, i int)
diff --git a/tests/script/unique/account/testSuite.sim b/tests/script/unique/account/testSuite.sim
index 38856196c28f1161ee4f4ba74bc7a462202f6890..9d4141cfe0c086f9a8863fffb00a9cb0f410e265 100644
--- a/tests/script/unique/account/testSuite.sim
+++ b/tests/script/unique/account/testSuite.sim
@@ -4,7 +4,7 @@ run unique/account/account_len.sim
 run unique/account/authority.sim
 run unique/account/basic.sim
 run unique/account/paras.sim
-#run unique/account/pass_alter.sim
+run unique/account/pass_alter.sim
 run unique/account/pass_len.sim
 run unique/account/usage.sim
 run unique/account/user_create.sim
diff --git a/tests/script/unique/big/balance.sim b/tests/script/unique/big/balance.sim
index 3ae30f283d6a21ee16e8b9b9779df528deb352df..270c3810a703edaa8d09e733b685689164248068 100644
--- a/tests/script/unique/big/balance.sim
+++ b/tests/script/unique/big/balance.sim
@@ -1,9 +1,3 @@
-
-
-
-
-
-
 system sh/stop_dnodes.sh
 system sh/deploy.sh -n dnode1 -i 1
 system sh/cfg.sh -n dnode1 -c numOfTotalVnodes -v 4
diff --git a/tests/script/unique/cluster/balance1.sim b/tests/script/unique/cluster/balance1.sim
index a7113b45359f6d23ac647b74c5a62bb8419ba423..50f56688f36ab4b95d6c59f6ce1c74953927b530 100644
--- a/tests/script/unique/cluster/balance1.sim
+++ b/tests/script/unique/cluster/balance1.sim
@@ -92,7 +92,7 @@ $x = 0
 show2: 
 	$x = $x + 1
 	sleep 2000
-	if $x == 30 then
+	if $x == 20 then
 	  return -1
 	endi
 sql show dnodes -x show2
@@ -134,7 +134,7 @@ $x = 0
 show4: 
 	$x = $x + 1
 	sleep 2000
-	if $x == 30 then
+	if $x == 20 then
 	  return -1
 	endi
 sql show dnodes -x show4
@@ -442,19 +442,24 @@ sql reset query cache
 sleep 1000
 
 sql use c_b1_d1
-sql select * from c_b1_t1
+sql select * from c_b1_d1.c_b1_t1
+print $rows 
+print $data01 $data11 $data21 $data31 $data41
 if $rows != 5 then
   return -1
 endi
 
 sql use c_b1_d2
-sql select * from c_b1_t2
-if $rows == 6 then
+sql select * from c_b1_d2.c_b1_t2
+print $rows 
+print $data01 $data11 $data21 $data31 $data41
+if $rows != 6 then
   return -1
 endi
 
 sql use c_b1_d3
-sql select * from c_b1_t3 order by t desc
+sql select * from c_b1_d3.c_b1_t3 order by t desc
+print $rows 
 print $data01 $data11 $data21 $data31 $data41
 if $rows != 6 then
   return -1
@@ -464,11 +469,13 @@ if $data01 != 36 then
 endi
 
 sql use c_b1_d4
-sql select * from c_b1_t4 order by t desc
+sql select * from c_b1_d4.c_b1_t4 order by t desc
+print $rows 
 print $data01 $data11 $data21 $data31 $data41
 
 sql use c_b1_d5
-sql select * from c_b1_t5 order by t desc
+sql select * from c_b1_d5.c_b1_t5 order by t desc
+print $rows 
 print $data01 $data11 $data21 $data31 $data41
 if $data01 != 51 then
   return -1
@@ -487,7 +494,8 @@ if $data41 != 55 then
 endi
 
 sql use c_b1_d6
-sql select * from c_b1_t6 order by t desc
+sql select * from c_b1_d6.c_b1_t6 order by t desc
+print $rows 
 print $data01 $data11 $data21 $data31 $data41
 if $data01 != 61 then
   return -1
@@ -506,7 +514,8 @@ if $data41 != 65 then
 endi
 
 sql use c_b1_d7
-sql select * from c_b1_t7 order by t desc
+sql select * from c_b1_d7.c_b1_t7 order by t desc
+print $rows 
 print $data01 $data11 $data21 $data31 $data41
 if $data01 != 71 then
   return -1
@@ -525,7 +534,8 @@ if $data41 != 75 then
 endi
 
 sql use c_b1_d8
-sql select * from c_b1_t8 order by t desc
+sql select * from c_b1_d8.c_b1_t8 order by t desc
+print $rows 
 print $data01 $data11 $data21 $data31 $data41
 if $data01 != 81 then
   return -1
diff --git a/tests/script/unique/cluster/balance1_bug.sim b/tests/script/unique/cluster/balance1_bug.sim
deleted file mode 100644
index d9f903d55e271b2ad08ecb1714b7858a7f7d5f88..0000000000000000000000000000000000000000
--- a/tests/script/unique/cluster/balance1_bug.sim
+++ /dev/null
@@ -1,789 +0,0 @@
-system sh/stop_dnodes.sh
-system sh/deploy.sh -n dnode1 -i 1
-system sh/deploy.sh -n dnode2 -i 2
-system sh/deploy.sh -n dnode3 -i 3
-system sh/deploy.sh -n dnode4 -i 4
-
-system sh/cfg.sh -n dnode1 -c numOfMPeers -v 3
-system sh/cfg.sh -n dnode2 -c numOfMPeers -v 3
-system sh/cfg.sh -n dnode3 -c numOfMPeers -v 3
-system sh/cfg.sh -n dnode4 -c numOfMPeers -v 3
-
-system sh/cfg.sh -n dnode1 -c numOfTotalVnodes -v 4
-system sh/cfg.sh -n dnode2 -c numOfTotalVnodes -v 4
-system sh/cfg.sh -n dnode3 -c numOfTotalVnodes -v 4
-system sh/cfg.sh -n dnode4 -c numOfTotalVnodes -v 4
-
-system sh/cfg.sh -n dnode1 -c clog -v 1
-system sh/cfg.sh -n dnode2 -c clog -v 1
-system sh/cfg.sh -n dnode3 -c clog -v 1
-system sh/cfg.sh -n dnode4 -c clog -v 1
-
-system sh/cfg.sh -n dnode1 -c mgmtEqualVnodeNum -v 0
-system sh/cfg.sh -n dnode2 -c mgmtEqualVnodeNum -v 0
-system sh/cfg.sh -n dnode3 -c mgmtEqualVnodeNum -v 0
-system sh/cfg.sh -n dnode4 -c mgmtEqualVnodeNum -v 0
-
-print ============== step1
-print ========= start dnode1
-system sh/exec_up.sh -n dnode1 -s start
-sql connect
-
-sql create database c_b1_d1 tables 4
-sql use c_b1_d1
-
-sql create table c_b1_t1 (t timestamp, i int)
-sql insert into c_b1_t1 values(now+1s, 15)
-sql insert into c_b1_t1 values(now+2s, 14)
-sql insert into c_b1_t1 values(now+2s, 13)
-sql insert into c_b1_t1 values(now+3s, 12)
-sql insert into c_b1_t1 values(now+4s, 11)
-
-sql create database c_b1_d2 tables 4
-sql use c_b1_d2
-sql create table c_b1_t2 (t timestamp, i int)
-sql insert into c_b1_t2 values(now+1s, 25)
-sql insert into c_b1_t2 values(now+2s, 24)
-sql insert into c_b1_t2 values(now+3s, 23)
-sql insert into c_b1_t2 values(now+4s, 22)
-sql insert into c_b1_t2 values(now+5s, 21)
-
-sql show dnodes
-$dnode1Vnodes = $data2_1
-print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-
-if $dnode1Vnodes != 2 then
-  return -1
-endi
-if $dnode2Vnodes != null then
-  return -1
-endi
-
-print ============================== step2
-print ========= start dnode2
-sleep 2000
-sql create dnode $hostname2
-system sh/exec_up.sh -n dnode2 -s start
-sleep 5000
-
-$x = 0
-show2: 
-	$x = $x + 1
-	sleep 2000
-	if $x == 30 then
-	  return -1
-	endi
-sql show dnodes -x show2
-$dnode1Vnodes = $data2_1
-print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-
-if $dnode1Vnodes != 3 then
-  goto show2
-endi
-if $dnode2Vnodes != 3 then
-  goto show2
-endi
-
-sql show mnodes
-$dnode1Role = $data2_1
-$dnode2Role = $data2_2
-$dnode3Role = $data2_3
-$dnode4Role = $data2_4
-print dnode1 ==> $dnode1Role
-print dnode2 ==> $dnode2Role
-print dnode3 ==> $dnode3Role
-print dnode4 ==> $dnode4Role
-
-print ============================== step3
-print ========= add db3
-sql create database c_b1_d3 tables 4
-sql use c_b1_d3
-sql create table c_b1_t3 (t timestamp, i int)
-sql insert into c_b1_t3 values(now+1s, 35)
-sql insert into c_b1_t3 values(now+2s, 34)
-sql insert into c_b1_t3 values(now+3s, 33)
-sql insert into c_b1_t3 values(now+4s, 32)
-sql insert into c_b1_t3 values(now+5s, 31)
-
-print ============================== step4
-print ========= drop dnode2
-sql drop dnode $hostname2
-sleep 9000
-
-$x = 0
-show4: 
-	$x = $x + 1
-	sleep 2000
-	if $x == 30 then
-	  return -1
-	endi
-sql show dnodes -x show4
-$dnode1Vnodes = $data2_1
-print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-
-if $dnode1Vnodes != 1 then
-  goto show4
-endi
-if $dnode2Vnodes != null then
-  goto show4
-endi
-
-sql show mnodes
-$dnode1Role = $data2_1
-$dnode2Role = $data2_2
-$dnode3Role = $data2_3
-$dnode4Role = $data2_4
-print dnode1 ==> $dnode1Role
-print dnode2 ==> $dnode2Role
-print dnode3 ==> $dnode3Role
-print dnode4 ==> $dnode4Role
-
-print ============================== step5
-print ========= add dnode2
-system sh/exec_up.sh -n dnode2 -s stop -x SIGINT
-sleep 5000
-system sh/exec_up.sh -n dnode2 -s start
-sql create dnode $hostname2
-sleep 9000
-
-$x = 0
-show5: 
-	$x = $x + 1
-	sleep 2000
-	if $x == 20 then 
-	  return -1
-	endi
-sql show dnodes -x show5
-$dnode1Vnodes = $data2_1
-print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-
-if $dnode1Vnodes != 2 then
-  goto show5
-endi
-if $dnode2Vnodes != 3 then
-  goto show5
-endi
-
-sql show mnodes
-$dnode1Role = $data2_1
-$dnode2Role = $data2_2
-$dnode3Role = $data2_3
-$dnode4Role = $data2_4
-print dnode1 ==> $dnode1Role
-print dnode2 ==> $dnode2Role
-print dnode3 ==> $dnode3Role
-print dnode4 ==> $dnode4Role
-
-print ============================== step6
-print ========= drop dnode1
-system sh/exec_up.sh -n dnode1 -s stop -x SIGINT
-print stop dnode1 and sleep 10000
-sleep 10000
-
-sql drop dnode $hostname1
-print drop dnode1 and sleep 9000
-sleep 9000
-
-$x = 0
-show6: 
-	$x = $x + 1
-	sleep 2000
-	if $x == 30 then
-	  return -1
-	endi
-sql show dnodes -x show6
-$dnode1Vnodes = $data2_1
-print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-
-if $dnode1Vnodes != null then
-  goto show6
-endi
-if $dnode2Vnodes != 1 then
-  goto show6
-endi
-
-sql show mnodes
-$dnode1Role = $data2_1
-$dnode2Role = $data2_2
-$dnode3Role = $data2_3
-$dnode4Role = $data2_4
-print dnode1 ==> $dnode1Role
-print dnode2 ==> $dnode2Role
-print dnode3 ==> $dnode3Role
-print dnode4 ==> $dnode4Role
-
-print ============================== step7
-print ========= add dnode1
-sql create dnode $hostname1
-sleep 23000
-system sh/exec_up.sh -n dnode1 -s start
-sleep 14000
-
-$x = 0
-show7: 
-	$x = $x + 1
-	sleep 2000
-	if $x == 20 then 
-	  return -1
-	endi
-sql show dnodes -x show7
-$dnode1Vnodes = $data2_1
-print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-
-if $dnode1Vnodes != 3 then
-  goto show7
-endi
-if $dnode2Vnodes != 2 then
-  goto show7
-endi
-
-sql show mnodes
-$dnode1Role = $data2_1
-$dnode2Role = $data2_2
-$dnode3Role = $data2_3
-$dnode4Role = $data2_4
-print dnode1 ==> $dnode1Role
-print dnode2 ==> $dnode2Role
-print dnode3 ==> $dnode3Role
-print dnode4 ==> $dnode4Role
-
-print ============================== step8
-print ========= drop dnode2
-system sh/exec_up.sh -n dnode2 -s stop -x SIGINT
-print stop dnode2 and sleep 10000
-sleep 20000
-sql drop dnode $hostname2
-print drop dnode2 and sleep 9000
-sleep 19000
-
-$x = 0
-show8: 
-	$x = $x + 1
-	sleep 2000
-	if $x == 30 then
-	  return -1
-	endi
-sql show dnodes -x show8
-$dnode1Vnodes = $data2_1
-print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-
-if $dnode1Vnodes != 1 then
-  goto show8
-endi
-if $dnode2Vnodes != null then
-  goto show8
-endi
-
-sql show mnodes
-$dnode1Role = $data2_1
-$dnode2Role = $data2_2
-$dnode3Role = $data2_3
-$dnode4Role = $data2_4
-print dnode1 ==> $dnode1Role
-print dnode2 ==> $dnode2Role
-print dnode3 ==> $dnode3Role
-print dnode4 ==> $dnode4Role
-
-if $dnode1Role != master then
-  return -1
-endi
-
-print ============================== step9
-print ========= add dnode2
-sql create dnode $hostname2
-system sh/exec_up.sh -n dnode2 -s start
-sleep 9000
-
-$x = 0
-show9: 
-	$x = $x + 1
-	sleep 2000
-	if $x == 30 then
-	  return -1
-	endi
-sql show dnodes -x show9
-$dnode1Vnodes = $data2_1
-print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-
-if $dnode1Vnodes != 2 then
-  goto show9
-endi
-if $dnode2Vnodes != 3 then
-  goto show9
-endi
-
-sql show mnodes
-$dnode1Role = $data2_1
-$dnode2Role = $data2_2
-$dnode3Role = $data2_3
-$dnode4Role = $data2_4
-print dnode1 ==> $dnode1Role
-print dnode2 ==> $dnode2Role
-print dnode3 ==> $dnode3Role
-print dnode4 ==> $dnode4Role
-
-print ============================== step10
-print ========= add db4
-sql create database c_b1_d4 tables 4
-sql use c_b1_d4
-sql create table c_b1_t4 (t timestamp, i int)
-sql insert into c_b1_t4 values(now+1s, 45)
-sql insert into c_b1_t4 values(now+2s, 44)
-sql insert into c_b1_t4 values(now+3s, 43)
-sql insert into c_b1_t4 values(now+4s, 42)
-sql insert into c_b1_t4 values(now+5s, 41)
-
-$x = 0
-show10: 
-	$x = $x + 1
-	sleep 2000
-	if $x == 30 then
-	  return -1
-	endi
-sql show dnodes -x show10
-$dnode1Vnodes = $data2_1
-print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-
-if $dnode1Vnodes != 2 then
-   goto show10
-endi
-if $dnode2Vnodes != 2 then
-   goto show10
-endi
-
-sql use c_b1_d3
-sql insert into c_b1_t3 values(now+1s, 35)
-
-sql use c_b1_d2
-sql insert into c_b1_t2 values(now+1s, 25)
-
-sql show mnodes
-$dnode1Role = $data2_1
-$dnode2Role = $data2_2
-print dnode1 ==> $dnode1Role
-print dnode2 ==> $dnode2Role
-
-if $dnode1Role != master then
-  return -1
-endi
-
-print ============================== step11
-print ========= drop dnode2
-sleep 2000
-sql drop dnode $hostname2
-sleep 9000
-
-$x = 0
-show11: 
-	$x = $x + 1
-	sleep 2000
-	if $x == 20 then 
-	  return -1
-	endi
-sql show dnodes -x show11
-$dnode1Vnodes = $data2_1
-print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-
-if $dnode1Vnodes != 0 then
-   goto show11
-endi
-if $dnode2Vnodes != null then
-   goto show11
-endi
-
-sql show mnodes
-$dnode1Role = $data2_1
-$dnode2Role = $data2_2
-$dnode3Role = $data2_3
-$dnode4Role = $data2_4
-print dnode1 ==> $dnode1Role
-print dnode2 ==> $dnode2Role
-print dnode3 ==> $dnode3Role
-print dnode4 ==> $dnode4Role
-
-system sh/exec_up.sh -n dnode2 -s stop -x SIGINT
-
-print ============================== step12
-print ========= add db5
-sql create database c_b1_d5 tables 4
-sql use c_b1_d5
-sql create table c_b1_t5 (t timestamp, i int) -x error3
-print no enough vnodes, but create success
-return -1
-error3:
-
-print ============================== step13
-print ========= add dnode2
-sql create dnode $hostname2
-system sh/exec_up.sh -n dnode2 -s start
-sleep 9000
-
-sql show mnodes
-$dnode1Role = $data2_1
-$dnode2Role = $data2_2
-$dnode3Role = $data2_3
-$dnode4Role = $data2_4
-print dnode1 ==> $dnode1Role
-print dnode2 ==> $dnode2Role
-print dnode3 ==> $dnode3Role
-print dnode4 ==> $dnode4Role
-
-sql use c_b1_d5;
-$x = 0
-create5: 
-	$x = $x + 1
-	sleep 1000
-	if $x == 50 then
-	  return -1
-	endi
-sql create table c_b1_t5 (t timestamp, i int) -x create5
-sql insert into c_b1_t5 values(now+1s, 55)
-sql insert into c_b1_t5 values(now+2s, 54)
-sql insert into c_b1_t5 values(now+3s, 53)
-sql insert into c_b1_t5 values(now+4s, 52)
-sql insert into c_b1_t5 values(now+5s, 51)
-
-sql create database c_b1_d6
-sql use c_b1_d6
-$x = 0
-create6: 
-	$x = $x + 1
-	sleep 1000
-	if $x == 50 then
-	  return -1
-	endi
-sql create table c_b1_t6 (t timestamp, i int)  -x create6
-sql insert into c_b1_t6 values(now+1s, 65)
-sql insert into c_b1_t6 values(now+2s, 64)
-sql insert into c_b1_t6 values(now+3s, 63)
-sql insert into c_b1_t6 values(now+4s, 62)
-sql insert into c_b1_t6 values(now+5s, 61)
-
-sql show dnodes
-$dnode1Vnodes = $data2_1
-print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-
-#if $dnode1Vnodes != 1 then
-#  return -1
-#endi
-#if $dnode2Vnodes != 1 then
-#  return -1
-#endi
-
-print ============================== step14
-print ========= add dnode3
-
-sql show mnodes
-$dnode1Role = $data2_1
-$dnode2Role = $data2_2
-$dnode3Role = $data2_3
-$dnode4Role = $data2_4
-print dnode1 ==> $dnode1Role
-print dnode2 ==> $dnode2Role
-print dnode3 ==> $dnode3Role
-print dnode4 ==> $dnode4Role
-
-sleep 2000
-sql create dnode $hostname3
-system sh/exec_up.sh -n dnode3 -s start
-sleep 15000
-
-$x = 0
-show14: 
-	$x = $x + 1
-	sleep 2000
-	if $x == 30 then
-	  return -1
-	endi
-sql show dnodes -x show14
-$dnode1Vnodes = $data2_1
-print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-
-if $dnode1Vnodes != 2 then
-  goto show14
-endi
-if $dnode2Vnodes != 2 then
-  goto show14
-endi
-if $dnode3Vnodes != 2 then
-  goto show14
-endi
-
-sql show mnodes
-$dnode1Role = $data2_1
-$dnode2Role = $data2_2
-$dnode3Role = $data2_3
-print dnode1 ==> $dnode1Role
-print dnode2 ==> $dnode2Role
-print dnode3 ==> $dnode3Role
-
-print ============================== step15
-print ========= create db7 db8
-
-sql create database c_b1_d7 tables 4
-sql use c_b1_d7
-sql create table c_b1_t7 (t timestamp, i int)
-sql insert into c_b1_t7 values(now+1s, 75)
-sql insert into c_b1_t7 values(now+2s, 74)
-sql insert into c_b1_t7 values(now+3s, 73)
-sql insert into c_b1_t7 values(now+4s, 72)
-sql insert into c_b1_t7 values(now+5s, 71)
-
-sql create database c_b1_d8
-sql use c_b1_d8
-sql create table c_b1_t8 (t timestamp, i int)
-sql insert into c_b1_t8 values(now+1s, 85)
-sql insert into c_b1_t8 values(now+2s, 84)
-sql insert into c_b1_t8 values(now+3s, 83)
-sql insert into c_b1_t8 values(now+4s, 82)
-sql insert into c_b1_t8 values(now+5s, 81)
-
-sql show mnodes
-$dnode1Role = $data2_1
-$dnode2Role = $data2_2
-$dnode3Role = $data2_3
-$dnode4Role = $data2_4
-print dnode1 ==> $dnode1Role
-print dnode2 ==> $dnode2Role
-print dnode3 ==> $dnode3Role
-print dnode4 ==> $dnode4Role
-
-print ========== add dnode4
-sleep 2000
-sql create dnode $hostname4
-print sql create dnode $hostname4 over
-system sh/exec_up.sh -n dnode4 -s start
-print sleep 12000
-sleep 12000
-print sleep 12000 over
-
-$x = 0
-show15: 
-	$x = $x + 1
-	sleep 2000
-	if $x == 15 then 
-	  return -1
-	endi
-sql show dnodes -x show15
-$dnode1Vnodes = $data2_1
-print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-$dnode4Vnodes = $data2_4
-print dnode4 $dnode4Vnodes
-
-if $dnode1Vnodes != 2 then
-  goto show15
-endi
-if $dnode2Vnodes != 2 then
-  goto show15
-endi
-if $dnode3Vnodes != 2 then
-  goto show15
-endi
-if $dnode4Vnodes != 2 then
-  goto show15
-endi
-
-print ============================== step16
-print ========= drop dnode4, create db9
-
-sql drop dnode $hostname4
-sleep 10000
-sql create database c_b1_d9 tables 4
-sql use c_b1_d9
-sql create table c_b1_t9 (t timestamp, i int)
-sql insert into c_b1_t9 values(now+1s, 95)
-sql insert into c_b1_t9 values(now+2s, 94)
-sql insert into c_b1_t9 values(now+3s, 93)
-sql insert into c_b1_t9 values(now+4s, 92)
-sql insert into c_b1_t9 values(now+5s, 91)
-
-system sh/exec_up.sh -n dnode4 -s stop -x SIGINT
-
-$x = 0
-show16: 
-	$x = $x + 1
-	sleep 2000
-	if $x == 30 then
-	  return -1
-	endi
-sql show dnodes -x show16
-$dnode1Vnodes = $data2_1
-print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-
-if $dnode1Vnodes != 1 then
-  goto show16
-endi
-if $dnode2Vnodes != 1 then
-  goto show16
-endi
-if $dnode3Vnodes != 1 then
-  goto show16
-endi
-
-print ============================== step17
-print ========= check data
-
-sleep 2000
-
-sql use c_b1_d1
-sql select * from c_b1_t1 order by t desc -x s1
-s1:
-
-sql use c_b1_d2
-sql select * from c_b1_t2 order by t desc -x s2
-print $data01 $data11 $data21 $data31 $data41
-
-if $data01 != 25 then
-  return -1
-endi
-
-if $data11 != 21 then
-  return -1
-endi
-if $data21 != 22 then
-  return -1
-endi
-if $data31 != 23 then
-  return -1
-endi
-if $data41 != 24 then
-  return -1
-endi
-s2:
-
-sql use c_b1_d3
-sql select * from c_b1_t3 order by t desc -x s3
-print $data01 $data11 $data21 $data31 $data41
-if $data01 != 35 then
-  return -1
-endi
-s3:
-
-sql use c_b1_d4
-sql select * from c_b1_d4.c_b1_t4 order by t desc -x s4
-print $data01 $data11 $data21 $data31 $data41
-s4:
-
-
-sql use c_b1_d5
-sql select * from c_b1_d5.c_b1_t5 order by t desc -x s5
-print $data01 $data11 $data21 $data31 $data41
-if $data01 != 51 then
-  return -1
-endi
-if $data11 != 52 then
-  return -1
-endi
-if $data21 != 53 then
-  return -1
-endi
-if $data31 != 54 then
-  return -1
-endi
-if $data41 != 55 then
-  return -1
-endi
-s5:
-
-sql use c_b1_d6
-sql select * from c_b1_d6.c_b1_t6 order by t desc -x s6
-print $data01 $data11 $data21 $data31 $data41
-if $data01 != 61 then
-  return -1
-endi
-if $data11 != 62 then
-  return -1
-endi
-if $data21 != 63 then
-  return -1
-endi
-if $data31 != 64 then
-  return -1
-endi
-if $data41 != 65 then
-  return -1
-endi
-s6:
-
-sql use c_b1_d7
-sql select * from c_b1_d7.c_b1_t7 order by t desc -x s7
-print $data01 $data11 $data21 $data31 $data41
-if $data01 != 71 then
-  return -1
-endi
-if $data11 != 72 then
-  return -1
-endi
-if $data21 != 73 then
-  return -1
-endi
-if $data31 != 74 then
-  return -1
-endi
-if $data41 != 75 then
-  return -1
-endi
-s7:
-
-sql use c_b1_d9
-sql select * from c_b1_t9 order by t desc -x s8
-print $data01 $data11 $data21 $data31 $data41
-if $data01 != 91 then
-  return -1
-endi
-if $data11 != 92 then
-  return -1
-endi
-if $data21 != 93 then
-  return -1
-endi
-if $data31 != 94 then
-  return -1
-endi
-if $data41 != 95 then
-  return -1
-endi
-s8:
-
-print ============================================ over
-system sh/exec_up.sh -n dnode1 -s stop -x SIGINT
-system sh/exec_up.sh -n dnode2 -s stop -x SIGINT
-system sh/exec_up.sh -n dnode3 -s stop -x SIGINT
-system sh/exec_up.sh -n dnode4 -s stop -x SIGINT
-
-
-
diff --git a/tests/script/unique/cluster/balance1_single.sim b/tests/script/unique/cluster/balance1_single.sim
deleted file mode 100644
index be46186a595a38e9d91d4423a47b9432fc995ef0..0000000000000000000000000000000000000000
--- a/tests/script/unique/cluster/balance1_single.sim
+++ /dev/null
@@ -1,716 +0,0 @@
-system sh/stop_dnodes.sh
-system sh/deploy.sh -n dnode1 -i 1
-system sh/deploy.sh -n dnode2 -i 2
-system sh/deploy.sh -n dnode3 -i 3
-system sh/deploy.sh -n dnode4 -i 4
-system sh/deploy.sh -n dnode5 -i 5
-
-system sh/cfg.sh -n dnode1 -c numOfMPeers -v 1
-system sh/cfg.sh -n dnode2 -c numOfMPeers -v 1
-system sh/cfg.sh -n dnode3 -c numOfMPeers -v 1
-system sh/cfg.sh -n dnode4 -c numOfMPeers -v 1
-system sh/cfg.sh -n dnode5 -c numOfMPeers -v 1
-
-system sh/cfg.sh -n dnode1 -c numOfTotalVnodes -v 4
-system sh/cfg.sh -n dnode2 -c numOfTotalVnodes -v 4
-system sh/cfg.sh -n dnode3 -c numOfTotalVnodes -v 4
-system sh/cfg.sh -n dnode4 -c numOfTotalVnodes -v 4
-system sh/cfg.sh -n dnode5 -c numOfTotalVnodes -v 4
-
-system sh/cfg.sh -n dnode1 -c clog -v 1
-system sh/cfg.sh -n dnode2 -c clog -v 1
-system sh/cfg.sh -n dnode3 -c clog -v 1
-system sh/cfg.sh -n dnode4 -c clog -v 1
-system sh/cfg.sh -n dnode5 -c clog -v 1
-
-system sh/cfg.sh -n dnode1 -c mgmtEqualVnodeNum -v 4
-system sh/cfg.sh -n dnode2 -c mgmtEqualVnodeNum -v 4
-system sh/cfg.sh -n dnode3 -c mgmtEqualVnodeNum -v 4
-system sh/cfg.sh -n dnode4 -c mgmtEqualVnodeNum -v 4
-system sh/cfg.sh -n dnode5 -c mgmtEqualVnodeNum -v 4
-
-print ============== step1
-print ========= start dnode1
-system sh/exec_up.sh -n dnode1 -s start
-sleep 3000
-sql connect
-sql create dnode $hostname2
-system sh/exec_up.sh -n dnode2 -s start
-
-$x = 0
-show1: 
-	$x = $x + 1
-	sleep 1000
-	if $x == 50 then
-	  return -1
-	endi
-sql show dnodes -x show1
-$dnode1Vnodes = $data2_1
-print dnode1 $dnode2Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode3Vnodes
-
-if $dnode1Vnodes != 4 then
-  goto show1
-endi
-if $dnode2Vnodes != 4 then
-  goto show1
-endi
-sleep 1000
-
-sql create database c_b1_d1 tables 4
-sql use c_b1_d1
-
-sql create table c_b1_t1 (t timestamp, i int)
-sql insert into c_b1_t1 values(now+1s, 15)
-sql insert into c_b1_t1 values(now+2s, 14)
-sql insert into c_b1_t1 values(now+2s, 13)
-sql insert into c_b1_t1 values(now+3s, 12)
-sql insert into c_b1_t1 values(now+4s, 11)
-
-sql create database c_b1_d2 tables 4
-sql use c_b1_d2
-sql create table c_b1_t2 (t timestamp, i int)
-sql insert into c_b1_t2 values(now+1s, 25)
-sql insert into c_b1_t2 values(now+2s, 24)
-sql insert into c_b1_t2 values(now+3s, 23)
-sql insert into c_b1_t2 values(now+4s, 22)
-sql insert into c_b1_t2 values(now+5s, 21)
-
-sql show dnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-
-if $dnode2Vnodes != 2 then
-  return -1
-endi
-if $dnode3Vnodes != null then
-  return -1
-endi
-
-print ============================== step2
-print ========= start dnode3
-sleep 3000
-sql create dnode $hostname3
-system sh/exec_up.sh -n dnode3 -s start
-sleep 8000
-
-$x = 0
-show2: 
-	$x = $x + 1
-	sleep 1000
-	if $x == 50 then
-	  return -1
-	endi
-sql show dnodes -x show2
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-
-if $dnode2Vnodes != 3 then
-  goto show2
-endi
-if $dnode3Vnodes != 3 then
-  goto show2
-endi
-
-sql show mnodes
-$dnode1Role = $data2_1
-$dnode2Role = $data2_2
-$dnode3Role = $data2_3
-$dnode4Role = $data2_4
-print dnode1 ==> $dnode1Role
-print dnode2 ==> $dnode2Role
-print dnode3 ==> $dnode3Role
-print dnode4 ==> $dnode4Role
-
-print ============================== step3
-print ========= add db3
-sql create database c_b1_d3 tables 4
-sql use c_b1_d3
-sql create table c_b1_t3 (t timestamp, i int)
-sql insert into c_b1_t3 values(now+1s, 35)
-sql insert into c_b1_t3 values(now+2s, 34)
-sql insert into c_b1_t3 values(now+3s, 33)
-sql insert into c_b1_t3 values(now+4s, 32)
-sql insert into c_b1_t3 values(now+5s, 31)
-
-
-print ============================== step4
-print ========= drop dnode3
-sql drop dnode $hostname3
-sleep 9000
-
-$x = 0
-show4: 
-	$x = $x + 1
-	sleep 1000
-	if $x == 50 then
-	  return -1
-	endi
-sql show dnodes -x show4
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-
-if $dnode2Vnodes != 1 then
-  goto show4
-endi
-if $dnode3Vnodes != null then
-  goto show4
-endi
-
-sql show mnodes
-$dnode1Role = $data2_1
-$dnode2Role = $data2_2
-$dnode3Role = $data2_3
-$dnode4Role = $data2_4
-print dnode1 ==> $dnode1Role
-print dnode2 ==> $dnode2Role
-print dnode3 ==> $dnode3Role
-print dnode4 ==> $dnode4Role
-
-print ============================== step5
-print ========= add dnode3
-system sh/exec_up.sh -n dnode3 -s stop -x SIGINT
-sleep 5000
-system sh/exec_up.sh -n dnode3 -s start
-sql create dnode $hostname3
-sleep 9000
-
-$x = 0
-show5: 
-	$x = $x + 1
-	sleep 1000
-	if $x == 50 then
-	  return -1
-	endi
-sql show dnodes -x show5
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-
-if $dnode2Vnodes != 2 then
-  goto show5
-endi
-if $dnode3Vnodes != 3 then
-  goto show5
-endi
-
-print ============================== step6
-print ========= drop dnode2
-system sh/exec_up.sh -n dnode2 -s stop -x SIGINT
-print stop dnode2 and sleep 10000
-sleep 10000
-
-sql drop dnode $hostname2
-print drop dnode2 and sleep 9000
-sleep 9000
-
-$x = 0
-show6: 
-	$x = $x + 1
-	sleep 2000
-	if $x == 30 then
-	  return -1
-	endi
-sql show dnodes -x show6
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-
-if $dnode2Vnodes != null then
-  goto show6
-endi
-if $dnode3Vnodes != 1 then
-  goto show6
-endi
-
-#only c_b2_d2 has data, c_b1_d1 and c_b1_d3 is null
-
-print ============================== step7
-print ========= add dnode2
-sql create dnode $hostname2
-system sh/exec_up.sh -n dnode2 -s start
-sleep 9000
-
-$x = 0
-show7: 
-	$x = $x + 1
-	sleep 1000
-	if $x == 50 then
-	  return -1
-	endi
-sql show dnodes -x show7
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-
-if $dnode2Vnodes != 3 then
-  goto show7
-endi
-if $dnode3Vnodes != 2 then
-  goto show7
-endi
-
-print ============================== step8
-print ========= drop dnode3
-system sh/exec_up.sh -n dnode3 -s stop -x SIGINT
-print stop dnode3 and sleep 10000
-sleep 10000
-sql drop dnode $hostname3
-print drop dnode3 and sleep 9000
-sleep 9000
-
-$x = 0
-show8: 
-	$x = $x + 1
-	sleep 1000
-	if $x == 50 then
-	  return -1
-	endi
-sql show dnodes -x show8
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-
-if $dnode2Vnodes != 1 then
-  goto show8
-endi
-if $dnode3Vnodes != null then
-  goto show8
-endi
-
-print ============================== step9
-print ========= add dnode3
-sql create dnode $hostname3
-system sh/exec_up.sh -n dnode3 -s start
-sleep 9000
-
-$x = 0
-show9: 
-	$x = $x + 1
-	sleep 1000
-	if $x == 50 then
-	  return -1
-	endi
-sql show dnodes -x show9
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-
-if $dnode2Vnodes != 2 then
-  goto show9
-endi
-if $dnode3Vnodes != 3 then
-  goto show9
-endi
-
-print ============================== step10
-print ========= add db4
-sql create database c_b1_d4 tables 4
-sql use c_b1_d4
-sql create table c_b1_t4 (t timestamp, i int)
-sql insert into c_b1_t4 values(now+1s, 45)
-sql insert into c_b1_t4 values(now+2s, 44)
-sql insert into c_b1_t4 values(now+3s, 43)
-sql insert into c_b1_t4 values(now+4s, 42)
-sql insert into c_b1_t4 values(now+5s, 41)
-
-$x = 0
-show10: 
-	$x = $x + 1
-	sleep 1000
-	if $x == 50 then
-	  return -1
-	endi
-sql show dnodes -x show10
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-
-if $dnode2Vnodes != 2 then
-   goto show10
-endi
-if $dnode3Vnodes != 2 then
-   goto show10
-endi
-
-sql use c_b1_d3
-sql insert into c_b1_t3 values(now+1s, 35)
-
-sql use c_b1_d2
-sql insert into c_b1_t2 values(now+1s, 25)
-
-print ============================== step11
-print ========= drop dnode3
-sql drop dnode $hostname3
-sleep 9000
-
-$x = 0
-show11: 
-	$x = $x + 1
-	sleep 1000
-	if $x == 50 then
-	  return -1
-	endi
-sql show dnodes -x show11
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-
-if $dnode2Vnodes != 0 then
-   goto show11
-endi
-if $dnode3Vnodes != null then
-   goto show11
-endi
-
-system sh/exec_up.sh -n dnode3 -s stop -x SIGINT
-
-print ============================== step12
-print ========= add db5
-sql create database c_b1_d5 tables 4
-sql use c_b1_d5
-
-print ============================== step13
-print ========= add dnode3
-sql create dnode $hostname3
-system sh/exec_up.sh -n dnode3 -s start
-sleep 9000
-
-sql use c_b1_d5;
-$x = 0
-create5: 
-	$x = $x + 1
-	sleep 1000
-	if $x == 50 then
-	  return -1
-	endi
-sql create table c_b1_t5 (t timestamp, i int) -x create5
-sql insert into c_b1_t5 values(now+1s, 55)
-sql insert into c_b1_t5 values(now+2s, 54)
-sql insert into c_b1_t5 values(now+3s, 53)
-sql insert into c_b1_t5 values(now+4s, 52)
-sql insert into c_b1_t5 values(now+5s, 51)
-
-sql create database c_b1_d6 tables 4
-sql use c_b1_d6
-$x = 0
-create6: 
-	$x = $x + 1
-	sleep 1000
-	if $x == 20 then 
-	  return -1
-	endi
-sql create table c_b1_t6 (t timestamp, i int)  -x create6
-sql insert into c_b1_t6 values(now+1s, 65)
-sql insert into c_b1_t6 values(now+2s, 64)
-sql insert into c_b1_t6 values(now+3s, 63)
-sql insert into c_b1_t6 values(now+4s, 62)
-sql insert into c_b1_t6 values(now+5s, 61)
-
-sql show dnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-
-#if $dnode2Vnodes != 1 then
-#  return -1
-#endi
-#if $dnode3Vnodes != 1 then
-#  return -1
-#endi
-
-print ============================== step14
-print ========= add dnode4
-sql create dnode $hostname4
-system sh/exec_up.sh -n dnode4 -s start
-sleep 10000
-
-$x = 0
-show14: 
-	$x = $x + 1
-	sleep 1000
-	if $x == 50 then
-	  return -1
-	endi
-sql show dnodes -x show14
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-$dnode4Vnodes = $data2_4
-print dnode4 $dnode4Vnodes
-
-if $dnode2Vnodes != 2 then
-  goto show14
-endi
-if $dnode3Vnodes != 2 then
-  goto show14
-endi
-if $dnode4Vnodes != 2 then
-  goto show14
-endi
-
-print ============================== step15
-print ========= create db7 db8
-
-sql create database c_b1_d7 tables 4
-sql use c_b1_d7
-sql create table c_b1_t7 (t timestamp, i int)
-sql insert into c_b1_t7 values(now+1s, 75)
-sql insert into c_b1_t7 values(now+2s, 74)
-sql insert into c_b1_t7 values(now+3s, 73)
-sql insert into c_b1_t7 values(now+4s, 72)
-sql insert into c_b1_t7 values(now+5s, 71)
-
-sql create database c_b1_d8 tables 4
-sql use c_b1_d8
-sql create table c_b1_t8 (t timestamp, i int)
-sql insert into c_b1_t8 values(now+1s, 85)
-sql insert into c_b1_t8 values(now+2s, 84)
-sql insert into c_b1_t8 values(now+3s, 83)
-sql insert into c_b1_t8 values(now+4s, 82)
-sql insert into c_b1_t8 values(now+5s, 81)
-
-
-print ========== add dnode5
-sql create dnode $hostname5
-print sql create dnode $hostname5 over
-system sh/exec_up.sh -n dnode5 -s start
-print sleep 12000
-sleep 12000
-print sleep 12000 over
-
-$x = 0
-show15: 
-	$x = $x + 1
-	sleep 1000
-	if $x == 30 then
-	  return -1
-	endi
-sql show dnodes -x show15
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-$dnode4Vnodes = $data2_4
-print dnode4 $dnode4Vnodes
-$dnode5Vnodes = $data2_5
-print dnode5 $dnode5Vnodes
-
-if $dnode2Vnodes != 2 then
-  goto show15
-endi
-if $dnode3Vnodes != 2 then
-  goto show15
-endi
-if $dnode4Vnodes != 2 then
-  goto show15
-endi
-if $dnode5Vnodes != 2 then
-  goto show15
-endi
-
-print ============================== step16
-print ========= drop dnode5, create db9
-
-sql drop dnode $hostname5
-sleep 10000
-sql create database c_b1_d9 tables 4
-sql use c_b1_d9
-sql create table c_b1_t9 (t timestamp, i int)
-sql insert into c_b1_t9 values(now+1s, 95)
-sql insert into c_b1_t9 values(now+2s, 94)
-sql insert into c_b1_t9 values(now+3s, 93)
-sql insert into c_b1_t9 values(now+4s, 92)
-sql insert into c_b1_t9 values(now+5s, 91)
-
-system sh/exec_up.sh -n dnode5 -s stop -x SIGINT
-
-$x = 0
-show16: 
-	$x = $x + 1
-	sleep 1000
-	if $x == 50 then
-	  return -1
-	endi
-sql show dnodes -x show16
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-$dnode4Vnodes = $data2_4
-print dnode4 $dnode4Vnodes
-
-if $dnode2Vnodes != 1 then
-  goto show16
-endi
-if $dnode3Vnodes != 1 then
-  goto show16
-endi
-if $dnode4Vnodes != 1 then
-  goto show16
-endi
-
-print ============================== step17
-print ========= check data
-
-sql use c_b1_d1
-sql select * from c_b1_t1
-if $rows != 0 then
-  return -1
-endi
-
-sql use c_b1_d2
-sql select * from c_b1_t2
-if $rows != 6 then
-  return -1
-endi
-
-sql use c_b1_d3
-sql select * from c_b1_t3 order by t desc
-print $data01 $data11 $data21 $data31 $data41
-if $rows != 1 then
-  return -1
-endi
-if $data01 != 35 then
-  return -1
-endi
-
-sql use c_b1_d4
-sql select * from c_b1_t4 order by t desc
-print $data01 $data11 $data21 $data31 $data41
-if $data01 != 41 then
-  return -1
-endi
-if $data11 != 42 then
-  return -1
-endi
-if $data21 != 43 then
-  return -1
-endi
-if $data31 != 44 then
-  return -1
-endi
-if $data41 != 45 then
-  return -1
-endi
-
-sql use c_b1_d5
-sql select * from c_b1_t5 order by t desc
-print $data01 $data11 $data21 $data31 $data41
-if $data01 != 51 then
-  return -1
-endi
-if $data11 != 52 then
-  return -1
-endi
-if $data21 != 53 then
-  return -1
-endi
-if $data31 != 54 then
-  return -1
-endi
-if $data41 != 55 then
-  return -1
-endi
-
-sql use c_b1_d6
-sql select * from c_b1_t6 order by t desc
-print $data01 $data11 $data21 $data31 $data41
-if $data01 != 61 then
-  return -1
-endi
-if $data11 != 62 then
-  return -1
-endi
-if $data21 != 63 then
-  return -1
-endi
-if $data31 != 64 then
-  return -1
-endi
-if $data41 != 65 then
-  return -1
-endi
-
-sql use c_b1_d7
-sql select * from c_b1_t7 order by t desc
-print $data01 $data11 $data21 $data31 $data41
-if $data01 != 71 then
-  return -1
-endi
-if $data11 != 72 then
-  return -1
-endi
-if $data21 != 73 then
-  return -1
-endi
-if $data31 != 74 then
-  return -1
-endi
-if $data41 != 75 then
-  return -1
-endi
-
-sql use c_b1_d8
-sql select * from c_b1_t8 order by t desc
-print $data01 $data11 $data21 $data31 $data41
-if $data01 != 81 then
-  return -1
-endi
-if $data11 != 82 then
-  return -1
-endi
-if $data21 != 83 then
-  return -1
-endi
-if $data31 != 84 then
-  return -1
-endi
-if $data41 != 85 then
-  return -1
-endi
-
-sql use c_b1_d9
-sql select * from c_b1_t9 order by t desc
-print $data01 $data11 $data21 $data31 $data41
-if $data01 != 91 then
-  return -1
-endi
-if $data11 != 92 then
-  return -1
-endi
-if $data21 != 93 then
-  return -1
-endi
-if $data31 != 94 then
-  return -1
-endi
-if $data41 != 95 then
-  return -1
-endi
-
-
-print ============================================ over
-#system sh/exec_up.sh -n dnode2 -s stop -x SIGINT
-#system sh/exec_up.sh -n dnode3 -s stop -x SIGINT
-#system sh/exec_up.sh -n dnode4 -s stop -x SIGINT
-#system sh/exec_up.sh -n dnode5 -s stop -x SIGINT
-
-
-
diff --git a/tests/script/unique/cluster/balance2.sim b/tests/script/unique/cluster/balance2.sim
index 907b344140e067ca7a8dfab862ad7b2a612428bf..04ab5f8fe4f126bf1254209254abe8ed6ce0f4fd 100644
--- a/tests/script/unique/cluster/balance2.sim
+++ b/tests/script/unique/cluster/balance2.sim
@@ -128,13 +128,13 @@ print dnode2 $dnode2Vnodes
 $dnode3Vnodes = $data2_3
 print dnode3 $dnode3Vnodes
 
-if $dnode1Vnodes != 1 then
+if $dnode1Vnodes != 3 then
   goto show2
 endi
 if $dnode2Vnodes != null then
   goto show2
 endi
-if $dnode3Vnodes != 1 then
+if $dnode3Vnodes != 3 then
   goto show2
 endi
 
@@ -151,18 +151,9 @@ print dnode4 ==> $dnode4Role
 system sh/exec_up.sh -n dnode2 -s stop  -x SIGINT
 
 print ============================== step3
-print ========= start dnode2
-sql create dnode $hostname2
-
-sleep 3000
-system sh/deploy.sh -n dnode2 -i 2
-system sh/cfg.sh -n dnode2 -c numOfMPeers -v 3
-system sh/cfg.sh -n dnode2 -c numOfTotalVnodes -v 4
-system sh/cfg.sh -n dnode2 -c clog -v 1
-system sh/cfg.sh -n dnode2 -c mgmtEqualVnodeNum -v 0
-sleep 3000
-
-system sh/exec_up.sh -n dnode2 -s start
+print ========= start dnode4
+sql create dnode $hostname4
+system sh/exec_up.sh -n dnode4 -s start
 sleep 10000
 
 $x = 0
@@ -175,15 +166,15 @@ show3:
 sql show dnodes -x show3
 $dnode1Vnodes = $data2_1
 print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
+$dnode4Vnodes = $data2_4
+print dnode4 $dnode4Vnodes
 $dnode3Vnodes = $data2_3
 print dnode3 $dnode3Vnodes
 
 if $dnode1Vnodes != 2 then
   goto show3
 endi
-if $dnode2Vnodes != 2 then
+if $dnode4Vnodes != 2 then
   goto show3
 endi
 if $dnode3Vnodes != 2 then
@@ -200,6 +191,20 @@ print dnode2 ==> $dnode2Role
 print dnode3 ==> $dnode3Role
 print dnode4 ==> $dnode4Role
 
+if $dnode1Role != master then
+  return -1
+endi
+if $dnode2Role != null then
+  return -1
+endi
+if $dnode3Role != slave then
+  return -1
+endi
+
+if $dnode4Role != slave then
+  return -1
+endi
+
 print ============================== step4
 print ========= drop dnode3
 sql drop dnode $hostname3
@@ -215,15 +220,15 @@ show4:
 sql show dnodes -x show4
 $dnode1Vnodes = $data2_1
 print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
+$dnode4Vnodes = $data2_4
+print dnode4 $dnode4Vnodes
 $dnode3Vnodes = $data2_3
 print dnode3 $dnode3Vnodes
 
-if $dnode1Vnodes != 1 then
+if $dnode1Vnodes != 3 then
   goto show4
 endi
-if $dnode2Vnodes != 1 then
+if $dnode4Vnodes != 3 then
   goto show4
 endi
 if $dnode3Vnodes != null then
@@ -240,21 +245,26 @@ print dnode2 ==> $dnode2Role
 print dnode3 ==> $dnode3Role
 print dnode4 ==> $dnode4Role
 
+if $dnode1Role != master then
+  return -1
+endi
+if $dnode2Role != null then
+  return -1
+endi
+if $dnode3Role != null then
+  return -1
+endi
+
+if $dnode4Role != slave then
+  return -1
+endi
+
 system sh/exec_up.sh -n dnode3 -s stop  -x SIGINT
 
 print ============================== step5
 print ========= start dnode3
-sql create dnode $hostname3
-
-sleep 3000
-system sh/deploy.sh -n dnode3 -i 3
-system sh/cfg.sh -n dnode3 -c numOfMPeers -v 3
-system sh/cfg.sh -n dnode3 -c numOfTotalVnodes -v 4
-system sh/cfg.sh -n dnode3 -c clog -v 1
-system sh/cfg.sh -n dnode3 -c mgmtEqualVnodeNum -v 0
-sleep 3000
-
-system sh/exec_up.sh -n dnode3 -s start
+sql create dnode $hostname5
+system sh/exec_up.sh -n dnode5 -s start
 sleep 9000
 
 $x = 0
@@ -267,33 +277,30 @@ show5:
 sql show dnodes -x show5
 $dnode1Vnodes = $data2_1
 print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
+$dnode4Vnodes = $data2_4
+print dnode4 $dnode4Vnodes
+$dnode5Vnodes = $data2_5
+print dnode5 $dnode5Vnodes
 
 if $dnode1Vnodes != 2 then
   goto show5
 endi
-if $dnode2Vnodes != 2 then
+if $dnode4Vnodes != 2 then
   goto show5
 endi
-if $dnode3Vnodes != 2 then
+if $dnode5Vnodes != 2 then
   goto show5
 endi
 
 sql show mnodes
 $dnode1Role = $data2_1
-$dnode2Role = $data2_2
-$dnode3Role = $data2_3
 $dnode4Role = $data2_4
+$dnode5Role = $data2_5
 print dnode1 ==> $dnode1Role
-print dnode2 ==> $dnode2Role
-print dnode3 ==> $dnode3Role
 print dnode4 ==> $dnode4Role
+print dnode5 ==> $dnode5Role
 
 print ============================== step6
-print ========= drop dnode1
 system sh/exec_up.sh -n dnode1 -s stop  -x SIGINT
 print stop dnode1 and sleep 10000
 sleep 10000
@@ -302,347 +309,63 @@ sql drop dnode $hostname1
 print drop dnode1 and sleep 9000
 sleep 9000
 
-$x = 0
-show6: 
-	$x = $x + 1
-	sleep 2000
-	if $x == 30 then
-	  return -1
-	endi
-sql show dnodes -x show6
-$dnode1Vnodes = $data2_1
-print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-
-if $dnode1Vnodes != null then
-  goto show6
-endi
-if $dnode2Vnodes != 1 then
-  goto show6
-endi
-if $dnode3Vnodes != 1 then
-  goto show6
-endi
-
 sql show mnodes
 $dnode1Role = $data2_1
-$dnode2Role = $data2_2
-$dnode3Role = $data2_3
 $dnode4Role = $data2_4
+$dnode5Role = $data2_5
 print dnode1 ==> $dnode1Role
-print dnode2 ==> $dnode2Role
-print dnode3 ==> $dnode3Role
 print dnode4 ==> $dnode4Role
+print dnode5 ==> $dnode5Role
 
-print ============================== step7
-print ========= start dnode1
-sql create dnode $hostname1
-
-sql show mnodes
-$dnode1Role = $data2_1
-$dnode2Role = $data2_2
-$dnode3Role = $data2_3
-$dnode4Role = $data2_4
-print dnode1 ==> $dnode1Role
-print dnode2 ==> $dnode2Role
-print dnode3 ==> $dnode3Role
-print dnode4 ==> $dnode4Role
-
-sleep 3000
-system sh/deploy.sh -n dnode1 -i 1
-system sh/cfg.sh -n dnode1 -c numOfMPeers -v 3
-system sh/cfg.sh -n dnode1 -c numOfTotalVnodes -v 4
-system sh/cfg.sh -n dnode1 -c clog -v 1
-system sh/cfg.sh -n dnode1 -c mgmtEqualVnodeNum -v 0
-sleep 3000
-
-system sh/exec_up.sh -n dnode1 -s start
-sleep 9000
-
-$x = 0
-
-show7: 
-	sql show mnodes
-	$dnode1Role = $data2_1
-	$dnode2Role = $data2_2
-	$dnode3Role = $data2_3
-	$dnode4Role = $data2_4
-	print dnode1 ==> $dnode1Role
-	print dnode2 ==> $dnode2Role
-	print dnode3 ==> $dnode3Role
-	print dnode4 ==> $dnode4Role
-
-	$x = $x + 1
-	sleep 2000
-	if $x == 30 then
-	  return -1
-	endi
-sql show dnodes -x show7
-$dnode1Vnodes = $data2_1
-print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-
-if $dnode1Vnodes != 2 then
-  goto show7
-endi
-if $dnode2Vnodes != 2 then
-  goto show7
-endi
-if $dnode3Vnodes != 2 then
-  goto show7
-endi
-
-print ============================== step8
-print ========= add db4
-
-sql create database c_b2_d4 replica 2 tables 4
-sql use c_b2_d4
-sql create table c_b2_t4 (t timestamp, i int) 
-sql insert into c_b2_t4 values(1520000020045, 45)
-sql insert into c_b2_t4 values(1520000021044, 44)
-sql insert into c_b2_t4 values(1520000022043, 43)
-sql insert into c_b2_t4 values(1520000023042, 42)
-sql insert into c_b2_t4 values(1520000024041, 41)
-
-sql create dnode $hostname4
-system sh/exec_up.sh -n dnode4 -s start
-sleep 9000
-
-sql show mnodes
-$dnode1Role = $data2_1
-$dnode2Role = $data2_2
-$dnode3Role = $data2_3
-$dnode4Role = $data2_4
-print dnode1 ==> $dnode1Role
-print dnode2 ==> $dnode2Role
-print dnode3 ==> $dnode3Role
-print dnode4 ==> $dnode4Role
-
-$x = 0
-show8: 
-	$x = $x + 1
-	sleep 2000
-	if $x == 30 then
-	  return -1
-	endi
-sql show dnodes -x show8
-$dnode1Vnodes = $data2_1
-print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-$dnode4Vnodes = $data2_4
-print dnode4 $dnode4Vnodes
-
-if $dnode1Vnodes != 2 then
-  goto show8
-endi
-if $dnode2Vnodes != 2 then
-  goto show8
-endi
-if $dnode3Vnodes != 2 then
-  goto show8
-endi
-if $dnode4Vnodes != 2 then
-  goto show8
-endi
-
-print ============================== step9
-print ========= drop dnode1.4
-sql drop dnode $hostname1
-sql drop dnode $hostname4
-sleep 10000
-
-sql show mnodes
-$dnode1Role = $data2_1
-$dnode2Role = $data2_2
-$dnode3Role = $data2_3
-$dnode4Role = $data2_4
-print dnode1 ==> $dnode1Role
-print dnode2 ==> $dnode2Role
-print dnode3 ==> $dnode3Role
-print dnode4 ==> $dnode4Role
-
-$x = 0
-show9: 
-	$x = $x + 1
-	sleep 2000
-	if $x == 30 then
-	  return -1
-	endi
-sql show dnodes -x show9
-$dnode1Vnodes = $data2_1
-print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-$dnode4Vnodes = $data2_4
-print dnode4 $dnode4Vnodes
-
-if $dnode1Vnodes != null then
-  goto show9
-endi
-if $dnode2Vnodes != 0 then
-  goto show9
-endi
-if $dnode3Vnodes != 0 then
-  goto show9
-endi
-if $dnode4Vnodes != null then
-  goto show9
+if $dnode1Role != offline then
+  return -1
 endi
 
-system sh/exec_up.sh -n dnode1 -s stop  -x SIGINT
-system sh/exec_up.sh -n dnode4 -s stop  -x SIGINT
-
-print ============================== step10
-print ========= start dnode1.4
-sql create dnode $hostname1
-sql create dnode $hostname4
-
-sleep 3000
-system sh/deploy.sh -n dnode1 -i 1
-ssystem sh/cfg.sh -n dnode1 -c numOfMPeers -v 3
-system sh/cfg.sh -n dnode1 -c numOfTotalVnodes -v 4
-system sh/cfg.sh -n dnode1 -c clog -v 1
-system sh/cfg.sh -n dnode1 -c mgmtEqualVnodeNum -v 0
-sleep 3000
-
-sleep 3000
-system sh/deploy.sh -n dnode4 -i 4
-system sh/cfg.sh -n dnode4 -c numOfMPeers -v 3
-system sh/cfg.sh -n dnode4 -c numOfTotalVnodes -v 4
-system sh/cfg.sh -n dnode4 -c clog -v 1
-system sh/cfg.sh -n dnode4 -c mgmtEqualVnodeNum -v 0
-sleep 3000
-
+print ============================== step6.1
 system sh/exec_up.sh -n dnode1 -s start
-system sh/exec_up.sh -n dnode4 -s start
-sleep 10000
 
 $x = 0
-show10: 
-	sql show mnodes
-	$dnode1Role = $data2_1
-	$dnode2Role = $data2_2
-	$dnode3Role = $data2_3
-	$dnode4Role = $data2_4
-	print dnode1 ==> $dnode1Role
-	print dnode2 ==> $dnode2Role
-	print dnode3 ==> $dnode3Role
-	print dnode4 ==> $dnode4Role
-	
+show6: 
 	$x = $x + 1
 	sleep 2000
 	if $x == 30 then
 	  return -1
 	endi
-sql show dnodes -x show10
+sql show dnodes -x show6
 $dnode1Vnodes = $data2_1
 print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
 $dnode4Vnodes = $data2_4
 print dnode4 $dnode4Vnodes
+$dnode5Vnodes = $data2_5
+print dnode5 $dnode5Vnodes
 
-if $dnode1Vnodes != 2 then
-  goto show10
-endi
-if $dnode2Vnodes != 2 then
-  goto show10
+if $dnode1Vnodes != null then
+  goto show6
 endi
-if $dnode3Vnodes != 2 then
-  goto show10
+if $dnode4Vnodes != 3 then
+  goto show6
 endi
-if $dnode4Vnodes != 2 then
-  goto show10
+if $dnode5Vnodes != 3 then
+  goto show6
 endi
 
-print ============================== step11
-
 sql show mnodes
 $dnode1Role = $data2_1
-$dnode2Role = $data2_2
-$dnode3Role = $data2_3
 $dnode4Role = $data2_4
+$dnode5Role = $data2_5
 print dnode1 ==> $dnode1Role
-print dnode2 ==> $dnode2Role
-print dnode3 ==> $dnode3Role
 print dnode4 ==> $dnode4Role
+print dnode5 ==> $dnode5Role
 
-sql create database c_b2_d5 replica 2 tables 4
-sql use c_b2_d5;
-sql create table c_b2_t5 (t timestamp, i int)
-sql insert into c_b2_t5 values(1520000020055, 55)
-sql insert into c_b2_t5 values(1520000021054, 54)
-sql insert into c_b2_t5 values(1520000022053, 53)
-sql insert into c_b2_t5 values(1520000023052, 52)
-sql insert into c_b2_t5 values(1520000024051, 51)
-
-sql create database c_b2_d6 replica 2 tables 4
-sql use c_b2_d6
-sql create table c_b2_t6 (t timestamp, i int) 
-sql insert into c_b2_t6 values(1520000020065, 65)
-sql insert into c_b2_t6 values(1520000021064, 64)
-sql insert into c_b2_t6 values(1520000022063, 63)
-sql insert into c_b2_t6 values(1520000023062, 62)
-sql insert into c_b2_t6 values(1520000024061, 61)
-
-$x = 0
-show11: 
-	$x = $x + 1
-	sleep 2000
-	if $x == 30 then
-	  return -1
-	endi
-sql show dnodes -x show11
-$dnode1Vnodes = $data2_1
-print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-$dnode4Vnodes = $data2_4
-print dnode4 $dnode4Vnodes
-
-if $dnode1Vnodes != 1 then
-  goto show11
-endi
-if $dnode2Vnodes != 1 then
-  goto show11
-endi
-if $dnode3Vnodes != 1 then
-  goto show11
-endi
-if $dnode4Vnodes != 1 then
-  goto show11
-endi
-
-sql show mnodes
-$dnode1Role = $data2_1
-$dnode2Role = $data2_2
-$dnode3Role = $data2_3
-$dnode4Role = $data2_4
-print dnode1 ==> $dnode1Role
-print dnode2 ==> $dnode2Role
-print dnode3 ==> $dnode3Role
-print dnode4 ==> $dnode4Role
+#system sh/exec_up.sh -n dnode1 -s stop  -x SIGINT
 
 print ============================== step12
 print ========= check data
 
-sql use c_b2_d1
-sql select * from c_b2_t1 order by t desc
+sql reset query cache
+sleep 1000
+
+sql select * from c_b2_d1.c_b2_t1 order by t desc
 print $data01 $data11 $data21 $data31 $data41
 if $data01 != 11 then
   return -1
@@ -660,8 +383,7 @@ if $data41 != 15 then
   return -1
 endi
 
-sql use c_b2_d2
-sql select * from c_b2_t2 order by t desc
+sql select * from c_b2_d2.c_b2_t2 order by t desc
 print $data01 $data11 $data21 $data31 $data41
 
 #if $data01 != 21 then
@@ -680,8 +402,7 @@ print $data01 $data11 $data21 $data31 $data41
 #  return -1
 #endi
 
-sql use c_b2_d3
-sql select * from c_b2_t3 order by t desc
+sql select * from c_b2_d3.c_b2_t3 order by t desc
 print $data01 $data11 $data21 $data31 $data41
 if $data01 != 31 then
   return -1
@@ -699,8 +420,7 @@ if $data41 != 35 then
   return -1
 endi
 
-sql use c_b2_d4
-sql select * from c_b2_t4 order by t desc
+sql select * from c_b2_d4.c_b2_t4 order by t desc
 print $data01 $data11 $data21 $data31 $data41
 if $data01 != 41 then
   return -1
@@ -718,8 +438,7 @@ if $data41 != 45 then
   return -1
 endi
 
-sql use c_b2_d5
-sql select * from c_b2_t5 order by t desc
+sql select * from c_b2_d5.c_b2_t5 order by t desc
 print $data01 $data11 $data21 $data31 $data41
 if $data01 != 51 then
   return -1
@@ -737,8 +456,7 @@ if $data41 != 55 then
   return -1
 endi
 
-sql use c_b2_d6
-sql select * from c_b2_t6 order by t desc
+sql select * from c_b2_d6.c_b2_t6 order by t desc
 print $data01 $data11 $data21 $data31 $data41
 if $data01 != 61 then
   return -1
@@ -756,7 +474,6 @@ if $data41 != 65 then
   return -1
 endi
 
-
 print ============================================ over
 system sh/exec_up.sh -n dnode1 -s stop  -x SIGINT
 system sh/exec_up.sh -n dnode2 -s stop  -x SIGINT
@@ -766,5 +483,3 @@ system sh/exec_up.sh -n dnode5 -s stop  -x SIGINT
 system sh/exec_up.sh -n dnode6 -s stop  -x SIGINT
 system sh/exec_up.sh -n dnode7 -s stop  -x SIGINT
 system sh/exec_up.sh -n dnode8 -s stop  -x SIGINT
-
-
diff --git a/tests/script/unique/cluster/balance3.sim b/tests/script/unique/cluster/balance3.sim
index 76ea380e8e12b9e0621dde2774c89a144e781918..1e66fcf253ffb489aba6f1de6177de888b118a05 100644
--- a/tests/script/unique/cluster/balance3.sim
+++ b/tests/script/unique/cluster/balance3.sim
@@ -1,14 +1,5 @@
 system sh/stop_dnodes.sh
 
-
-
-
-
-
-
-
-
-
 system sh/deploy.sh -n dnode1 -i 1
 system sh/deploy.sh -n dnode2 -i 2
 system sh/deploy.sh -n dnode3 -i 3
@@ -188,16 +179,8 @@ endi
 system sh/exec_up.sh -n dnode2 -s stop  -x SIGINT
 
 print ============================== step4
-print ========= start dnode2
-sleep 3000
-system sh/deploy.sh -n dnode2 -i 2
-system sh/cfg.sh -n dnode2 -c numOfMPeers -v 3
-system sh/cfg.sh -n dnode2 -c numOfTotalVnodes -v 4
-system sh/cfg.sh -n dnode2 -c clog -v 1
-system sh/cfg.sh -n dnode2 -c mgmtEqualVnodeNum -v 0
-sleep 3000
-sql create dnode $hostname2
-system sh/exec_up.sh -n dnode2 -s start
+sql create dnode $hostname5
+system sh/exec_up.sh -n dnode5 -s start
 sleep 10000
 
 $x = 0
@@ -210,14 +193,14 @@ show4:
 sql show dnodes -x show4
 $dnode1Vnodes = $data2_1
 print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
+$dnode5Vnodes = $data2_5
+print dnode5 $dnode5Vnodes
 $dnode3Vnodes = $data2_3
 print dnode3 $dnode3Vnodes
 $dnode4Vnodes = $data2_4
 print dnode4 $dnode4Vnodes
 
-if $dnode2Vnodes != 2 then
+if $dnode5Vnodes != 2 then
   goto show4
 endi
 
@@ -236,8 +219,8 @@ show5:
 sql show dnodes -x show5
 $dnode1Vnodes = $data2_1
 print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
+$dnode5Vnodes = $data2_5
+print dnode5 $dnode5Vnodes
 $dnode3Vnodes = $data2_3
 print dnode3 $dnode3Vnodes
 $dnode4Vnodes = $data2_4
@@ -246,7 +229,7 @@ print dnode4 $dnode4Vnodes
 if $dnode1Vnodes != 1 then
   goto show5
 endi
-if $dnode2Vnodes != 1 then
+if $dnode5Vnodes != 1 then
   goto show5
 endi
 if $dnode3Vnodes != null then
@@ -256,20 +239,11 @@ if $dnode4Vnodes != 1 then
   goto show5
 endi
 
-
 system sh/exec_up.sh -n dnode3 -s stop  -x SIGINT
 
 print ============================== step6
-print ========= start dnode3
-sleep 3000
-system sh/deploy.sh -n dnode3 -i 3
-system sh/cfg.sh -n dnode3 -c numOfMPeers -v 3
-system sh/cfg.sh -n dnode3 -c numOfTotalVnodes -v 4
-system sh/cfg.sh -n dnode3 -c clog -v 1
-system sh/cfg.sh -n dnode3 -c mgmtEqualVnodeNum -v 0
-sleep 3000
-sql create dnode $hostname3
-system sh/exec_up.sh -n dnode3 -s start
+sql create dnode $hostname6
+system sh/exec_up.sh -n dnode6 -s start
 sleep 9000
 
 $x = 0
@@ -282,14 +256,14 @@ show6:
 sql show dnodes -x show6
 $dnode1Vnodes = $data2_1
 print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
 $dnode4Vnodes = $data2_4
 print dnode4 $dnode4Vnodes
+$dnode5Vnodes = $data2_5
+print dnode5 $dnode5Vnodes
+$dnode6Vnodes = $data2_6
+print dnode6 $dnode6Vnodes
 
-if $dnode3Vnodes != 2 then
+if $dnode6Vnodes != 2 then
   goto show6
 endi
 
@@ -308,20 +282,20 @@ show7:
 sql show dnodes -x show7
 $dnode1Vnodes = $data2_1
 print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
 $dnode4Vnodes = $data2_4
 print dnode4 $dnode4Vnodes
+$dnode5Vnodes = $data2_5
+print dnode5 $dnode5Vnodes
+$dnode6Vnodes = $data2_6
+print dnode6 $dnode6Vnodes
 
 if $dnode1Vnodes != 1 then
   goto show7
 endi
-if $dnode2Vnodes != 1 then
+if $dnode5Vnodes != 1 then
   goto show7
 endi
-if $dnode3Vnodes != 1 then
+if $dnode6Vnodes != 1 then
   goto show7
 endi
 if $dnode4Vnodes != null then
@@ -331,16 +305,8 @@ endi
 system sh/exec_up.sh -n dnode4 -s stop  -x SIGINT
 
 print ============================== step8
-print ========= start dnode4
-sleep 3000
-system sh/deploy.sh -n dnode4 -i 4
-system sh/cfg.sh -n dnode4 -c numOfMPeers -v 3
-system sh/cfg.sh -n dnode4 -c numOfTotalVnodes -v 4
-system sh/cfg.sh -n dnode4 -c clog -v 1
-system sh/cfg.sh -n dnode4 -c mgmtEqualVnodeNum -v 0
-sleep 3000
-sql create dnode $hostname4
-system sh/exec_up.sh -n dnode4 -s start
+sql create dnode $hostname7
+system sh/exec_up.sh -n dnode7 -s start
 sleep 9000
 
 $x = 0
@@ -353,14 +319,14 @@ show8:
 sql show dnodes -x show8
 $dnode1Vnodes = $data2_1
 print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-$dnode4Vnodes = $data2_4
-print dnode4 $dnode4Vnodes
-
-if $dnode4Vnodes != 2 then
+$dnode5Vnodes = $data2_5
+print dnode5 $dnode5Vnodes
+$dnode6Vnodes = $data2_6
+print dnode6 $dnode6Vnodes
+$dnode7Vnodes = $data2_7
+print dnode7 $dnode7Vnodes
+
+if $dnode7Vnodes != 2 then
   goto show8
 endi
 
@@ -382,39 +348,26 @@ show9:
 	  return -1
 	endi
 sql show dnodes -x show9
-$dnode1Vnodes = $data2_1
-print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-$dnode4Vnodes = $data2_4
-print dnode4 $dnode4Vnodes
-
-if $dnode1Vnodes != null then
-  goto show9
-endi
-if $dnode2Vnodes != 1 then
+$dnode5Vnodes = $data2_5
+print dnode5 $dnode5Vnodes
+$dnode6Vnodes = $data2_6
+print dnode6 $dnode6Vnodes
+$dnode7Vnodes = $data2_7
+print dnode7 $dnode7Vnodes
+
+if $dnode5Vnodes != 1 then
   goto show9
 endi
-if $dnode3Vnodes != 1 then
+if $dnode6Vnodes != 1 then
   goto show9
 endi
-if $dnode4Vnodes != 1 then
+if $dnode7Vnodes != 1 then
   goto show9
 endi
 
 print ============================== step10
-print ========= start dnode1
-sleep 3000
-system sh/deploy.sh -n dnode1 -i 1
-system sh/cfg.sh -n dnode1 -c numOfMPeers -v 3
-system sh/cfg.sh -n dnode1 -c numOfTotalVnodes -v 4
-system sh/cfg.sh -n dnode1 -c clog -v 1
-system sh/cfg.sh -n dnode1 -c mgmtEqualVnodeNum -v 0
-sleep 3000
-sql create dnode $hostname1
-system sh/exec_up.sh -n dnode1 -s start
+sql create dnode $hostname8
+system sh/exec_up.sh -n dnode8 -s start
 sleep 9000
 
 $x = 0
@@ -425,16 +378,16 @@ show10:
 	  return -1
 	endi
 sql show dnodes -x show10
-$dnode1Vnodes = $data2_1
-print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-$dnode4Vnodes = $data2_4
-print dnode4 $dnode4Vnodes
-
-if $dnode1Vnodes != 2 then
+$dnode5Vnodes = $data2_5
+print dnode5 $dnode5Vnodes
+$dnode6Vnodes = $data2_6
+print dnode6 $dnode6Vnodes
+$dnode7Vnodes = $data2_7
+print dnode7 $dnode7Vnodes
+$dnode8Vnodes = $data2_8
+print dnode8 $dnode8Vnodes
+
+if $dnode8Vnodes != 2 then
  goto show10
 endi
 
@@ -488,48 +441,15 @@ endi
 #  goto show11
 #endi
 
-print ============================== step12
-print ========= drop dnode1
-sql drop dnode $hostname1
-sleep 10000
-
-$x = 0
-show12: 
-	$x = $x + 1
-	sleep 2000
-	if $x == 30 then
-	  return -1
-	endi
-sql show dnodes -x show12
-$dnode1Vnodes = $data2_1
-print dnode1 $dnode1Vnodes
-$dnode2Vnodes = $data2_2
-print dnode2 $dnode2Vnodes
-$dnode3Vnodes = $data2_3
-print dnode3 $dnode3Vnodes
-$dnode4Vnodes = $data2_4
-print dnode4 $dnode4Vnodes
-
-if $dnode1Vnodes != null then
-  goto show12
-endi
-if $dnode2Vnodes != 0 then
-  goto show12
-endi
-if $dnode3Vnodes != 0 then
-  goto show12
-endi
-if $dnode4Vnodes != 0 then
-  goto show12
-endi
-
 system sh/exec_up.sh -n dnode1 -s stop  -x SIGINT
 
 print ============================== step13
+sql reset query cache
+sleep 1000
+
 print ========= check data
 
-sql use c_b3_d1
-sql select * from c_b3_t1 order by t desc
+sql select * from c_b3_d1.c_b3_t1 order by t desc
 print $data01 $data11 $data21 $data31 $data41
 if $data01 != 11 then
   return -1
@@ -547,8 +467,7 @@ if $data41 != 15 then
   return -1
 endi
 
-sql use c_b3_d2
-sql select * from c_b3_t2 order by t desc
+sql select * from c_b3_d2.c_b3_t2 order by t desc
 print $data01 $data11 $data21 $data31 $data41
 
 if $data01 != 21 then
@@ -567,8 +486,7 @@ if $data41 != 25 then
   return -1
 endi
 
-sql use c_b3_d3
-sql select * from c_b3_t3 order by t desc
+sql select * from c_b3_d3.c_b3_t3 order by t desc
 print $data01 $data11 $data21 $data31 $data41
 if $data01 != 31 then
   return -1
@@ -586,8 +504,7 @@ if $data41 != 35 then
   return -1
 endi
 
-sql use c_b3_d4
-sql select * from c_b3_t4 order by t desc
+sql select * from c_b3_d4.c_b3_t4 order by t desc
 print $data01 $data11 $data21 $data31 $data41
 if $data01 != 41 then
   return -1
@@ -615,5 +532,3 @@ system sh/exec_up.sh -n dnode5 -s stop  -x SIGINT
 system sh/exec_up.sh -n dnode6 -s stop  -x SIGINT
 system sh/exec_up.sh -n dnode7 -s stop  -x SIGINT
 system sh/exec_up.sh -n dnode8 -s stop  -x SIGINT
-
-
diff --git a/tests/script/unique/cluster/testSuite.sim b/tests/script/unique/cluster/testSuite.sim
index 74fa2cb2715e28c81106251d3d5e0f815f7abe05..34cdda85dd2e984e509941a97269a984592d4118 100644
--- a/tests/script/unique/cluster/testSuite.sim
+++ b/tests/script/unique/cluster/testSuite.sim
@@ -1,5 +1,3 @@
 run unique/cluster/balance1.sim
 run unique/cluster/balance2.sim
 run unique/cluster/balance3.sim
-run unique/cluster/balance1_bug.sim
-run unique/cluster/balance1_single.sim
\ No newline at end of file
diff --git a/tests/script/uniqueSuite.sim b/tests/script/uniqueSuite.sim
deleted file mode 100644
index 0a3d57c27e3f11012e9d37f53745fb617d545d50..0000000000000000000000000000000000000000
--- a/tests/script/uniqueSuite.sim
+++ /dev/null
@@ -1,5 +0,0 @@
-################################# 
-
-run unique/mnode/testSuite.sim
-
-##################################