Merge pull request #24936 from taosdata/test/3.0/TD-28868

test: Splitting test cases to avoid case timeouts

tests/parallel_test/cases.task

@@ -238,7 +238,8 @@
 ,,y,system-test,./pytest.sh python3 ./test.py -f 7-tmq/tmqSubscribeStb-r3.py -N 5
 ,,y,system-test,./pytest.sh python3 ./test.py -f 7-tmq/tmq3mnodeSwitch.py -N 6 -M 3 -i True
 ,,y,system-test,./pytest.sh python3 ./test.py -f 7-tmq/tmq3mnodeSwitch.py -N 6 -M 3 -n 3 -i True
-,,y,system-test,./pytest.sh python3 test.py -f 7-tmq/tmqVnodeTransform.py -N 2 -n 1
+,,y,system-test,./pytest.sh python3 test.py -f 7-tmq/tmqVnodeTransform-db-removewal.py -N 2 -n 1
+,,y,system-test,./pytest.sh python3 test.py -f 7-tmq/tmqVnodeTransform-stb-removewal.py -N 6 -n 3
 ,,y,system-test,./pytest.sh python3 test.py -f 7-tmq/tmqVnodeTransform-stb.py -N 2 -n 1
 ,,y,system-test,./pytest.sh python3 test.py -f 7-tmq/tmqVnodeTransform-stb.py -N 6 -n 3
 #,,y,system-test,./pytest.sh python3 test.py -f 7-tmq/tmqVnodeTransform-db.py -N 6 -n 3

tests/system-test/7-tmq/tmqVnodeTransform-db-removewal.py

@@ -122,135 +122,7 @@ class TDTestCase:
         tdLog.debug(f"redistributeSql:{redistributeSql}")
         tdSql.query(redistributeSql)
         tdLog.debug("redistributeSql ok")
-
+        
-    def tmqCase1(self):
-        tdLog.printNoPrefix("======== test case 1: ")
-        paraDict = {'dbName':     'dbt',
-                    'dropFlag':   1,
-                    'event':      '',
-                    'vgroups':    1,
-                    'stbName':    'stb',
-                    'colPrefix':  'c',
-                    'tagPrefix':  't',
-                    'colSchema':   [{'type': 'INT', 'count':1},{'type': 'BIGINT', 'count':1},{'type': 'DOUBLE', 'count':1},{'type': 'BINARY', 'len':32, 'count':1},{'type': 'NCHAR', 'len':32, 'count':1},{'type': 'TIMESTAMP', 'count':1}],
-                    'tagSchema':   [{'type': 'INT', 'count':1},{'type': 'BIGINT', 'count':1},{'type': 'DOUBLE', 'count':1},{'type': 'BINARY', 'len':32, 'count':1},{'type': 'NCHAR', 'len':32, 'count':1}],
-                    'ctbPrefix':  'ctb',
-                    'ctbStartIdx': 0,
-                    'ctbNum':     10,
-                    'rowsPerTbl': 1000,
-                    'batchNum':   10,
-                    'startTs':    1640966400000,  # 2022-01-01 00:00:00.000
-                    'pollDelay':  60,
-                    'showMsg':    1,
-                    'showRow':    1,
-                    'snapshot':   0}
-
-        paraDict['vgroups'] = self.vgroups
-        paraDict['ctbNum'] = self.ctbNum
-        paraDict['rowsPerTbl'] = self.rowsPerTbl
-
-        topicNameList = ['topic1']
-        # expectRowsList = []
-        tmqCom.initConsumerTable()
-
-        tdLog.info("create topics from stb with filter")
-        queryString = "select * from %s.%s"%(paraDict['dbName'], paraDict['stbName'])
-        # sqlString = "create topic %s as stable %s" %(topicNameList[0], paraDict['stbName'])
-        sqlString = "create topic %s as %s" %(topicNameList[0], queryString)
-        tdLog.info("create topic sql: %s"%sqlString)
-        tdSql.execute(sqlString)
-        # tdSql.query(queryString)
-        # expectRowsList.append(tdSql.getRows())
-
-        # init consume info, and start tmq_sim, then check consume result
-        tdLog.info("insert consume info to consume processor")
-        consumerId   = 0
-        expectrowcnt = paraDict["rowsPerTbl"] * paraDict["ctbNum"] * 2
-        topicList    = topicNameList[0]
-        ifcheckdata  = 1
-        ifManualCommit = 1
-        keyList      = 'group.id:cgrp1, enable.auto.commit:true, auto.commit.interval.ms:200, auto.offset.reset:earliest'
-        tmqCom.insertConsumerInfo(consumerId, expectrowcnt,topicList,keyList,ifcheckdata,ifManualCommit)
-
-        tdLog.info("start consume processor")
-        tmqCom.startTmqSimProcess(pollDelay=paraDict['pollDelay'],dbName=paraDict["dbName"],showMsg=paraDict['showMsg'], showRow=paraDict['showRow'],snapshot=paraDict['snapshot'])
-        tdLog.info("wait the consume result")
-
-        tdLog.info("create ctb1")
-        tmqCom.create_ctable(tdSql, dbName=paraDict["dbName"],stbName=paraDict["stbName"],ctbPrefix=paraDict['ctbPrefix'],
-                             ctbNum=paraDict["ctbNum"],ctbStartIdx=paraDict['ctbStartIdx'])
-        tdLog.info("insert data")
-        pInsertThread = tmqCom.asyncInsertDataByInterlace(paraDict)
-
-        tmqCom.getStartConsumeNotifyFromTmqsim()
-        tmqCom.getStartCommitNotifyFromTmqsim()
-
-        #restart dnode & remove wal
-        self.restartAndRemoveWal()
-
-        # redistribute vgroup
-        self.redistributeVgroups();
-
-        tdLog.info("create ctb2")
-        paraDict['ctbPrefix'] = "ctbn"
-        tmqCom.create_ctable(tdSql, dbName=paraDict["dbName"],stbName=paraDict["stbName"],ctbPrefix=paraDict['ctbPrefix'],
-                             ctbNum=paraDict["ctbNum"],ctbStartIdx=paraDict['ctbStartIdx'])
-        tdLog.info("insert data")
-        pInsertThread1 = tmqCom.asyncInsertDataByInterlace(paraDict)
-        pInsertThread.join()
-        pInsertThread1.join()
-
-        expectRows = 1
-        resultList = tmqCom.selectConsumeResult(expectRows)
-
-        if expectrowcnt / 2 > resultList[0]:
-            tdLog.info("expect consume rows: %d, act consume rows: %d"%(expectrowcnt / 2, resultList[0]))
-            tdLog.exit("%d tmq consume rows error!"%consumerId)
-
-        # tmqCom.checkFileContent(consumerId, queryString)
-
-        time.sleep(10)
-        for i in range(len(topicNameList)):
-            tdSql.query("drop topic %s"%topicNameList[i])
-
-        tdLog.printNoPrefix("======== test case 1 end ...... ")
-
-    def tmqCase2(self):
-        tdLog.printNoPrefix("======== test case 2: ")
-        paraDict = {'dbName':'dbt'}
-
-        ntbName = "ntb"
-
-        topicNameList = ['topic2']
-        tmqCom.initConsumerTable()
-
-        sqlString = "create table %s.%s(ts timestamp, i nchar(8))" %(paraDict['dbName'], ntbName)
-        tdLog.info("create nomal table sql: %s"%sqlString)
-        tdSql.execute(sqlString)
-
-        tdLog.info("create topics from nomal table")
-        queryString = "select * from %s.%s"%(paraDict['dbName'], ntbName)
-        sqlString = "create topic %s as %s" %(topicNameList[0], queryString)
-        tdLog.info("create topic sql: %s"%sqlString)
-        tdSql.execute(sqlString)
-        tdSql.query("flush database %s"%(paraDict['dbName']))
-        #restart dnode & remove wal
-        self.restartAndRemoveWal()
-
-        # redistribute vgroup
-        self.redistributeVgroups();
-
-        sqlString = "alter table %s.%s modify column i nchar(16)" %(paraDict['dbName'], ntbName)
-        tdLog.info("alter table sql: %s"%sqlString)
-        tdSql.error(sqlString)
-        expectRows = 0
-        resultList = tmqCom.selectConsumeResult(expectRows)
-        time.sleep(1)
-        for i in range(len(topicNameList)):
-            tdSql.query("drop topic %s"%topicNameList[i])
-
-        tdLog.printNoPrefix("======== test case 2 end ...... ")
-
     def tmqCase3(self):
         tdLog.printNoPrefix("======== test case 3: ")
         paraDict = {'dbName':     'dbt',
@@ -330,12 +202,90 @@ class TDTestCase:
 
         tdLog.printNoPrefix("======== test case 3 end ...... ")
 
+    def tmqCaseDbname(self):
+        tdLog.printNoPrefix("======== test case  4 subscrib Dbname start: ")
+        paraDict = {'dbName':     'dbt',
+                    'dropFlag':   1,
+                    'event':      '',
+                    'vgroups':    1,
+                    'stbName':    'stbn',
+                    'colPrefix':  'c',
+                    'tagPrefix':  't',
+                    'colSchema':   [{'type': 'INT', 'count':1},{'type': 'BIGINT', 'count':1},{'type': 'DOUBLE', 'count':1},{'type': 'BINARY', 'len':32, 'count':1},{'type': 'NCHAR', 'len':32, 'count':1},{'type': 'TIMESTAMP', 'count':1}],
+                    'tagSchema':   [{'type': 'INT', 'count':1},{'type': 'BIGINT', 'count':1},{'type': 'DOUBLE', 'count':1},{'type': 'BINARY', 'len':32, 'count':1},{'type': 'NCHAR', 'len':32, 'count':1}],
+                    'ctbPrefix':  'ctb',
+                    'ctbStartIdx': 0,
+                    'ctbNum':     10,
+                    'rowsPerTbl': 1000,
+                    'batchNum':   10,
+                    'startTs':    1640966400000,  # 2022-01-01 00:00:00.000
+                    'pollDelay':  10,
+                    'showMsg':    1,
+                    'showRow':    1,
+                    'snapshot':   0}
+
+        paraDict['vgroups'] = self.vgroups
+        paraDict['ctbNum'] = self.ctbNum
+        paraDict['rowsPerTbl'] = self.rowsPerTbl
+
+        topicNameList = ['topic4']
+        tmqCom.initConsumerTable()
+
+        tdLog.info("create stb")
+        tmqCom.create_stable(tdSql, dbName=paraDict["dbName"],stbName=paraDict["stbName"])
+
+        tdLog.info("create ctb")
+        tmqCom.create_ctable(tdSql, dbName=paraDict["dbName"],stbName=paraDict["stbName"],ctbPrefix=paraDict['ctbPrefix'],
+                             ctbNum=paraDict["ctbNum"],ctbStartIdx=paraDict['ctbStartIdx'])
+        tdLog.info("insert data")
+        tmqCom.insert_data_interlaceByMultiTbl(tsql=tdSql,dbName=paraDict["dbName"],ctbPrefix=paraDict["ctbPrefix"],
+                                               ctbNum=paraDict["ctbNum"],rowsPerTbl=paraDict["rowsPerTbl"],batchNum=paraDict["batchNum"],
+                                               startTs=paraDict["startTs"],ctbStartIdx=paraDict['ctbStartIdx'])
+
+        tdLog.info("create topics from database ")
+        queryString = "database  %s "%(paraDict['dbName'])
+        sqlString = "create topic %s as %s" %(topicNameList[0], queryString)
+        tdLog.info("create topic sql: %s"%sqlString)
+        tdSql.execute(sqlString)
+
+        # init consume info, and start tmq_sim, then check consume result
+        tdLog.info("insert consume info to consume processor")
+        consumerId   = 0
+        expectrowcnt = paraDict["rowsPerTbl"] * paraDict["ctbNum"]
+        topicList    = topicNameList[0]
+        ifcheckdata  = 1
+        ifManualCommit = 1
+        keyList      = 'group.id:cgrp1, enable.auto.commit:true, auto.commit.interval.ms:200, auto.offset.reset:earliest'
+        tmqCom.insertConsumerInfo(consumerId, expectrowcnt,topicList,keyList,ifcheckdata,ifManualCommit)
+
+        tdLog.info("start consume processor")
+        tmqCom.startTmqSimProcess(pollDelay=paraDict['pollDelay'],dbName=paraDict["dbName"],showMsg=paraDict['showMsg'], showRow=paraDict['showRow'],snapshot=paraDict['snapshot'])
+        tdLog.info("wait the consume result")
+
+        time.sleep(1)
+        # restart dnode & remove wal
+        self.restartAndRemoveWal()
+
+        # redistribute vgroup
+        self.redistributeVgroups()
+
+        tdLog.info("start consume processor")
+        tmqCom.startTmqSimProcess(pollDelay=paraDict['pollDelay'],dbName=paraDict["dbName"],showMsg=paraDict['showMsg'], showRow=paraDict['showRow'],snapshot=paraDict['snapshot'])
+        tdLog.info("wait the consume result")
+        expectRows = 2
+        resultList = tmqCom.selectConsumeResult(expectRows)
+        
+        time.sleep(6)
+        for i in range(len(topicNameList)):
+            tdSql.query("drop topic %s"%topicNameList[i])
+ 
+        tdLog.printNoPrefix("======== test case 4 subscrib Dbname end ...... ")
+
     def run(self):
-        self.prepareTestEnv()
-        self.tmqCase1()
-        self.tmqCase2()
         self.prepareTestEnv()
         self.tmqCase3()
+        self.prepareTestEnv()
+        self.tmqCaseDbname()
 
     def stop(self):
         tdSql.close()

tests/system-test/7-tmq/tmqVnodeTransform-stb-removewal.py

@@ -0,0 +1,266 @@
+
+import taos
+import sys
+import time
+import socket
+import os
+import threading
+import math
+
+from util.log import *
+from util.sql import *
+from util.cases import *
+from util.dnodes import *
+from util.common import *
+from util.cluster import *
+sys.path.append("./7-tmq")
+from tmqCommon import *
+
+class TDTestCase:
+    def __init__(self):
+        self.vgroups    = 1
+        self.ctbNum     = 10
+        self.rowsPerTbl = 1000
+
+    def init(self, conn, logSql, replicaVar=1):
+        self.replicaVar = int(replicaVar)
+        tdLog.debug(f"start to excute {__file__}")
+        tdSql.init(conn.cursor(), True)
+
+    def getDataPath(self):
+        selfPath = tdCom.getBuildPath()
+
+        return selfPath + '/../sim/dnode%d/data/vnode/vnode%d/wal/*';
+
+    def prepareTestEnv(self):
+        tdLog.printNoPrefix("======== prepare test env include database, stable, ctables, and insert data: ")
+        paraDict = {'dbName':     'dbt',
+                    'dropFlag':   1,
+                    'event':      '',
+                    'vgroups':    1,
+                    'stbName':    'stb',
+                    'colPrefix':  'c',
+                    'tagPrefix':  't',
+                    'colSchema':   [{'type': 'INT', 'count':1},{'type': 'BIGINT', 'count':1},{'type': 'DOUBLE', 'count':1},{'type': 'BINARY', 'len':32, 'count':1},{'type': 'NCHAR', 'len':32, 'count':1},{'type': 'TIMESTAMP', 'count':1}],
+                    'tagSchema':   [{'type': 'INT', 'count':1},{'type': 'BIGINT', 'count':1},{'type': 'DOUBLE', 'count':1},{'type': 'BINARY', 'len':32, 'count':1},{'type': 'NCHAR', 'len':32, 'count':1}],
+                    'ctbPrefix':  'ctb',
+                    'ctbStartIdx': 0,
+                    'ctbNum':     10,
+                    'rowsPerTbl': 1000,
+                    'batchNum':   10,
+                    'startTs':    1640966400000,  # 2022-01-01 00:00:00.000
+                    'pollDelay':  60,
+                    'showMsg':    1,
+                    'showRow':    1,
+                    'snapshot':   0}
+
+        paraDict['vgroups'] = self.vgroups
+        paraDict['ctbNum'] = self.ctbNum
+        paraDict['rowsPerTbl'] = self.rowsPerTbl
+
+        tdCom.drop_all_db()
+        tmqCom.initConsumerTable()
+        tdCom.create_database(tdSql, paraDict["dbName"],paraDict["dropFlag"], wal_retention_period=36000,vgroups=paraDict["vgroups"],replica=self.replicaVar)
+        tdLog.info("create stb")
+        tmqCom.create_stable(tdSql, dbName=paraDict["dbName"],stbName=paraDict["stbName"])
+        # tdLog.info("create ctb")
+        # tmqCom.create_ctable(tdSql, dbName=paraDict["dbName"],stbName=paraDict["stbName"],ctbPrefix=paraDict['ctbPrefix'],
+        #                      ctbNum=paraDict["ctbNum"],ctbStartIdx=paraDict['ctbStartIdx'])
+        # tdLog.info("insert data")
+        # tmqCom.insert_data_interlaceByMultiTbl(tsql=tdSql,dbName=paraDict["dbName"],ctbPrefix=paraDict["ctbPrefix"],
+        #                                        ctbNum=paraDict["ctbNum"],rowsPerTbl=paraDict["rowsPerTbl"],batchNum=paraDict["batchNum"],
+        #                                        startTs=paraDict["startTs"],ctbStartIdx=paraDict['ctbStartIdx'])
+
+        # tdLog.info("restart taosd to ensure that the data falls into the disk")
+        # tdDnodes.stop(1)
+        # tdDnodes.start(1)
+        # tdSql.query("flush database %s"%(paraDict['dbName']))
+        return
+
+    def restartAndRemoveWal(self):
+        tdDnodes = cluster.dnodes
+        tdSql.query("select * from information_schema.ins_vnodes")
+        for result in tdSql.queryResult:
+            if result[2] == 'dbt':
+                tdLog.debug("dnode is %d"%(result[0]))
+                dnodeId = result[0]
+                vnodeId = result[1]
+
+                tdDnodes[dnodeId - 1].stoptaosd()
+                time.sleep(1)
+                dataPath = self.getDataPath()
+                dataPath = dataPath%(dnodeId,vnodeId)
+                os.system('rm -rf ' + dataPath)
+                tdLog.debug("dataPath:%s"%dataPath)
+                tdDnodes[dnodeId - 1].starttaosd()
+                time.sleep(1)
+                break
+        tdLog.debug("restart dnode ok")
+
+    def redistributeVgroups(self):
+        dnodesList = []
+        tdSql.query("show dnodes")
+        for result in tdSql.queryResult:
+            dnodesList.append(result[0])
+        print("dnodeList:",dnodesList)
+        tdSql.query("select * from information_schema.ins_vnodes")
+        vnodeId = 0
+        for result in tdSql.queryResult:
+            if result[2] == 'dbt':
+                tdLog.debug("dnode is %d"%(result[0]))
+                dnodesList.remove(result[0])
+                vnodeId = result[1]
+        print("its all data",dnodesList)
+        # if self.replicaVar == 1:
+        #     redistributeSql = "redistribute vgroup %d dnode %d" %(vnodeId, dnodesList[0])
+        # else:
+        redistributeSql = f"redistribute vgroup {vnodeId} " 
+        for vgdnode in dnodesList:
+            redistributeSql += f"dnode {vgdnode} "
+        print(redistributeSql)
+        
+        tdLog.debug(f"redistributeSql:{redistributeSql}")
+        tdSql.query(redistributeSql)
+        tdLog.debug("redistributeSql ok")
+
+    def tmqCase1(self):
+        tdLog.printNoPrefix("======== test case 1: ")
+        paraDict = {'dbName':     'dbt',
+                    'dropFlag':   1,
+                    'event':      '',
+                    'vgroups':    1,
+                    'stbName':    'stb',
+                    'colPrefix':  'c',
+                    'tagPrefix':  't',
+                    'colSchema':   [{'type': 'INT', 'count':1},{'type': 'BIGINT', 'count':1},{'type': 'DOUBLE', 'count':1},{'type': 'BINARY', 'len':32, 'count':1},{'type': 'NCHAR', 'len':32, 'count':1},{'type': 'TIMESTAMP', 'count':1}],
+                    'tagSchema':   [{'type': 'INT', 'count':1},{'type': 'BIGINT', 'count':1},{'type': 'DOUBLE', 'count':1},{'type': 'BINARY', 'len':32, 'count':1},{'type': 'NCHAR', 'len':32, 'count':1}],
+                    'ctbPrefix':  'ctb',
+                    'ctbStartIdx': 0,
+                    'ctbNum':     10,
+                    'rowsPerTbl': 1000,
+                    'batchNum':   10,
+                    'startTs':    1640966400000,  # 2022-01-01 00:00:00.000
+                    'pollDelay':  60,
+                    'showMsg':    1,
+                    'showRow':    1,
+                    'snapshot':   0}
+
+        paraDict['vgroups'] = self.vgroups
+        paraDict['ctbNum'] = self.ctbNum
+        paraDict['rowsPerTbl'] = self.rowsPerTbl
+
+        topicNameList = ['topic1']
+        # expectRowsList = []
+        tmqCom.initConsumerTable()
+
+        tdLog.info("create topics from stb with filter")
+        queryString = "select * from %s.%s"%(paraDict['dbName'], paraDict['stbName'])
+        # sqlString = "create topic %s as stable %s" %(topicNameList[0], paraDict['stbName'])
+        sqlString = "create topic %s as %s" %(topicNameList[0], queryString)
+        tdLog.info("create topic sql: %s"%sqlString)
+        tdSql.execute(sqlString)
+        # tdSql.query(queryString)
+        # expectRowsList.append(tdSql.getRows())
+
+        # init consume info, and start tmq_sim, then check consume result
+        tdLog.info("insert consume info to consume processor")
+        consumerId   = 0
+        expectrowcnt = paraDict["rowsPerTbl"] * paraDict["ctbNum"] * 2
+        topicList    = topicNameList[0]
+        ifcheckdata  = 1
+        ifManualCommit = 1
+        keyList      = 'group.id:cgrp1, enable.auto.commit:true, auto.commit.interval.ms:200, auto.offset.reset:earliest'
+        tmqCom.insertConsumerInfo(consumerId, expectrowcnt,topicList,keyList,ifcheckdata,ifManualCommit)
+
+        tdLog.info("start consume processor")
+        tmqCom.startTmqSimProcess(pollDelay=paraDict['pollDelay'],dbName=paraDict["dbName"],showMsg=paraDict['showMsg'], showRow=paraDict['showRow'],snapshot=paraDict['snapshot'])
+        tdLog.info("wait the consume result")
+
+        tdLog.info("create ctb1")
+        tmqCom.create_ctable(tdSql, dbName=paraDict["dbName"],stbName=paraDict["stbName"],ctbPrefix=paraDict['ctbPrefix'],
+                             ctbNum=paraDict["ctbNum"],ctbStartIdx=paraDict['ctbStartIdx'])
+        tdLog.info("insert data")
+        pInsertThread = tmqCom.asyncInsertDataByInterlace(paraDict)
+
+        tmqCom.getStartConsumeNotifyFromTmqsim()
+        tmqCom.getStartCommitNotifyFromTmqsim()
+
+        #restart dnode & remove wal
+        self.restartAndRemoveWal()
+
+        # redistribute vgroup
+        self.redistributeVgroups();
+
+        tdLog.info("create ctb2")
+        paraDict['ctbPrefix'] = "ctbn"
+        tmqCom.create_ctable(tdSql, dbName=paraDict["dbName"],stbName=paraDict["stbName"],ctbPrefix=paraDict['ctbPrefix'],
+                             ctbNum=paraDict["ctbNum"],ctbStartIdx=paraDict['ctbStartIdx'])
+        tdLog.info("insert data")
+        pInsertThread1 = tmqCom.asyncInsertDataByInterlace(paraDict)
+        pInsertThread.join()
+        pInsertThread1.join()
+
+        expectRows = 1
+        resultList = tmqCom.selectConsumeResult(expectRows)
+
+        if expectrowcnt / 2 > resultList[0]:
+            tdLog.info("expect consume rows: %d, act consume rows: %d"%(expectrowcnt / 2, resultList[0]))
+            tdLog.exit("%d tmq consume rows error!"%consumerId)
+
+        # tmqCom.checkFileContent(consumerId, queryString)
+
+        time.sleep(10)
+        for i in range(len(topicNameList)):
+            tdSql.query("drop topic %s"%topicNameList[i])
+
+        tdLog.printNoPrefix("======== test case 1 end ...... ")
+
+    def tmqCase2(self):
+        tdLog.printNoPrefix("======== test case 2: ")
+        paraDict = {'dbName':'dbt'}
+
+        ntbName = "ntb"
+
+        topicNameList = ['topic2']
+        tmqCom.initConsumerTable()
+
+        sqlString = "create table %s.%s(ts timestamp, i nchar(8))" %(paraDict['dbName'], ntbName)
+        tdLog.info("create nomal table sql: %s"%sqlString)
+        tdSql.execute(sqlString)
+
+        tdLog.info("create topics from nomal table")
+        queryString = "select * from %s.%s"%(paraDict['dbName'], ntbName)
+        sqlString = "create topic %s as %s" %(topicNameList[0], queryString)
+        tdLog.info("create topic sql: %s"%sqlString)
+        tdSql.execute(sqlString)
+        tdSql.query("flush database %s"%(paraDict['dbName']))
+        #restart dnode & remove wal
+        self.restartAndRemoveWal()
+
+        # redistribute vgroup
+        self.redistributeVgroups();
+
+        sqlString = "alter table %s.%s modify column i nchar(16)" %(paraDict['dbName'], ntbName)
+        tdLog.info("alter table sql: %s"%sqlString)
+        tdSql.error(sqlString)
+        expectRows = 0
+        resultList = tmqCom.selectConsumeResult(expectRows)
+        time.sleep(1)
+        for i in range(len(topicNameList)):
+            tdSql.query("drop topic %s"%topicNameList[i])
+
+        tdLog.printNoPrefix("======== test case 2 end ...... ")
+
+    def run(self):
+        self.prepareTestEnv()
+        self.tmqCase1()
+        self.tmqCase2()
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success(f"{__file__} successfully executed")
+
+event = threading.Event()
+
+tdCases.addLinux(__file__, TDTestCase())
+tdCases.addWindows(__file__, TDTestCase())