Merge pull request #18004 from taosdata/enh/crash_gen

enh: enh   crash_gen  for 3.0 new functions

tests/pytest/crash_gen.sh

@@ -45,7 +45,7 @@ fi
 
 # Now getting ready to execute Python
 # The following is the default of our standard dev env (Ubuntu 20.04), modify/adjust at your own risk
-PYTHON_EXEC=python3.8
+PYTHON_EXEC=python3
 
 # First we need to set up a path for Python to find our own TAOS modules, so that "import" can work.
 # export PYTHONPATH=$(pwd)/../../src/connector/python:$(pwd)

tests/pytest/crash_gen/crash_gen_main.py

@@ -37,6 +37,7 @@ import requests
 # from guppy import hpy
 import gc
 import taos
+from taos.tmq import *
 
 
 from .shared.types import TdColumns, TdTags
@@ -419,10 +420,12 @@ class ThreadCoordinator:
             except threading.BrokenBarrierError as err:
                 self._execStats.registerFailure("Aborted due to worker thread timeout")
                 Logging.error("\n")
+
                 Logging.error("Main loop aborted, caused by worker thread(s) time-out of {} seconds".format(
                     ThreadCoordinator.WORKER_THREAD_TIMEOUT))
                 Logging.error("TAOS related threads blocked at (stack frames top-to-bottom):")
                 ts = ThreadStacks()
+                ts.record_current_time(time.time())  # record thread exit time at current moment
                 ts.print(filterInternal=True)
                 workerTimeout = True
 
@@ -546,7 +549,12 @@ class ThreadCoordinator:
 
         # pick a task type for current state
         db = self.pickDatabase()
-        taskType = db.getStateMachine().pickTaskType() # dynamic name of class
+        if Dice.throw(2)==1:
+            taskType = db.getStateMachine().pickTaskType() # dynamic name of class
+        else:
+            taskType = db.getStateMachine().balance_pickTaskType() #  and an method can get  balance task types 
+            pass
+        
         return taskType(self._execStats, db)  # create a task from it
 
     def resetExecutedTasks(self):
@@ -674,9 +682,15 @@ class AnyState:
     # only "under normal circumstances", as we may override it with the -b option
     CAN_DROP_DB = 2  
     CAN_CREATE_FIXED_SUPER_TABLE = 3
+    CAN_CREATE_STREAM = 3  # super table must exists
+    CAN_CREATE_TOPIC = 3  # super table must exists
+    CAN_CREATE_CONSUMERS = 3 
     CAN_DROP_FIXED_SUPER_TABLE = 4
+    CAN_DROP_TOPIC = 4
+    CAN_DROP_STREAM = 4
     CAN_ADD_DATA = 5
     CAN_READ_DATA = 6
+    CAN_DELETE_DATA = 6
 
     def __init__(self):
         self._info = self.getInfo()
@@ -727,12 +741,30 @@ class AnyState:
             return False
         return self._info[self.CAN_DROP_FIXED_SUPER_TABLE]
 
+    def canCreateTopic(self):
+        return self._info[self.CAN_CREATE_TOPIC]
+    
+    def canDropTopic(self):
+        return self._info[self.CAN_DROP_TOPIC]
+
+    def canCreateConsumers(self):
+        return self._info[self.CAN_CREATE_CONSUMERS]
+    
+    def canCreateStreams(self):
+        return self._info[self.CAN_CREATE_STREAM]
+
+    def canDropStream(self):
+        return self._info[self.CAN_DROP_STREAM]
+
     def canAddData(self):
         return self._info[self.CAN_ADD_DATA]
 
     def canReadData(self):
         return self._info[self.CAN_READ_DATA]
 
+    def canDeleteData(self):
+        return self._info[self.CAN_DELETE_DATA]
+
     def assertAtMostOneSuccess(self, tasks, cls):
         sCnt = 0
         for task in tasks:
@@ -902,7 +934,7 @@ class StateHasData(AnyState):
                 ):  # only if we didn't create one
                 # we shouldn't have dropped it
                 self.assertNoTask(tasks, TaskDropDb)
-            if (not self.hasTask(tasks, TaskCreateSuperTable)
+            if not( self.hasTask(tasks, TaskCreateSuperTable)
                     ):  # if we didn't create the table
                 # we should not have a task that drops it
                 self.assertNoTask(tasks, TaskDropSuperTable)
@@ -974,14 +1006,21 @@ class StateMechine:
         # did not do this when openning connection, and this is NOT the worker
         # thread, which does this on their own
         dbc.use(dbName)
+        
         if not dbc.hasTables():  # no tables
+            
             Logging.debug("[STT] DB_ONLY found, between {} and {}".format(ts, time.time()))
             return StateDbOnly()
 
         # For sure we have tables, which means we must have the super table. # TODO: are we sure?
+        
         sTable = self._db.getFixedSuperTable()
-        if sTable.hasRegTables(dbc):  # no regular tables
+        
+
+        if sTable.hasRegTables(dbc):  # no regular tables 
+            # print("debug=====*\n"*100)
             Logging.debug("[STT] SUPER_TABLE_ONLY found, between {} and {}".format(ts, time.time()))
+                
             return StateSuperTableOnly()
         else:  # has actual tables
             Logging.debug("[STT] HAS_DATA found, between {} and {}".format(ts, time.time()))
@@ -1051,6 +1090,28 @@ class StateMechine:
         # Logging.debug(" (weighted random:{}/{}) ".format(i, len(taskTypes)))
         return taskTypes[i]
 
+    def balance_pickTaskType(self):
+        # all the task types we can choose from at curent state
+        BasicTypes = self.getTaskTypes()
+        weightsTypes = BasicTypes.copy()
+
+        # this matrixs can balance  the Frequency of TaskTypes 
+        balance_TaskType_matrixs = {'TaskDropDb': 5 , 'TaskDropTopics': 20 , 'TaskDropStreams':10 , 'TaskDropStreamTables':10 ,
+                          'TaskReadData':50 , 'TaskDropSuperTable':5 , 'TaskAlterTags':3 , 'TaskAddData':10,
+                          'TaskDeleteData':10 , 'TaskCreateDb':10 , 'TaskCreateStream': 3, 'TaskCreateTopic' :3,
+                          'TaskCreateConsumers':10, 'TaskCreateSuperTable': 10 }  # TaskType : balance_matrixs of task
+        
+        for task , weights in balance_TaskType_matrixs.items():
+            
+            for basicType in BasicTypes:
+                if basicType.__name__ == task:
+                    for _ in range(weights):
+                        weightsTypes.append(basicType)
+
+        task = random.sample(weightsTypes,1)
+        return task[0]
+
+
     # ref:
     # https://eli.thegreenplace.net/2010/01/22/weighted-random-generation-in-python/
     def _weighted_choice_sub(self, weights) -> int:
@@ -1109,6 +1170,7 @@ class Database:
         return "fs_table"
 
     def getFixedSuperTable(self) -> TdSuperTable:
+
         return TdSuperTable(self.getFixedSuperTableName(), self.getName())
 
     # We aim to create a starting time tick, such that, whenever we run our test here once
@@ -1342,6 +1404,19 @@ class Task():
                 0x2603, # Table does not exist, replaced by 2662 below
                 0x260d, # Tags number not matched
                 0x2662, # Table does not exist #TODO: what about 2603 above?
+                0x2600, # database not specified, SQL: show stables , database droped , and show tables
+                0x032C, # Object is creating
+                0x032D, # Object is dropping
+                0x03D3, # Conflict transaction not completed
+                0x0707, # Query not ready , it always occur at replica 3
+                0x707,  # Query not ready
+                0x396,  # Database in creating status
+                0x386,  # Database in droping status
+                0x03E1, # failed on tmq_subscribe ,topic not exist
+                0x03ed , # Topic must be dropped first, SQL: drop database db_0
+                0x0203 ,  #  Invalid value 
+                0x03f0 ,  # Stream already exist , topic already exists
+
 
 
 
@@ -1638,9 +1713,12 @@ class TaskCreateDb(StateTransitionTask):
             # numReplica = Dice.throw(Settings.getConfig().max_replicas) + 1 # 1,2 ... N
             numReplica = Config.getConfig().num_replicas # fixed, always
             repStr = "replica {}".format(numReplica)
-        updatePostfix = "update 1" if Config.getConfig().verify_data else "" # allow update only when "verify data" is active
+        updatePostfix = "" if Config.getConfig().verify_data else "" # allow update only when "verify data" is active , 3.0 version default is update 1 
+        vg_nums = random.randint(1,8)
+        cache_model = Dice.choice(['none' , 'last_row' , 'last_value' , 'both'])
+        buffer = random.randint(3,128)
         dbName = self._db.getName()
-        self.execWtSql(wt, "create database {} {} {} ".format(dbName, repStr, updatePostfix ) )
+        self.execWtSql(wt, "create database {} {} {} vgroups {} cachemodel '{}' buffer {}  ".format(dbName, repStr, updatePostfix, vg_nums, cache_model,buffer ) )
         if dbName == "db_0" and Config.getConfig().use_shadow_db:
             self.execWtSql(wt, "create database {} {} {} ".format("db_s", repStr, updatePostfix ) )
 
@@ -1654,9 +1732,211 @@ class TaskDropDb(StateTransitionTask):
         return state.canDropDb()
 
     def _executeInternal(self, te: TaskExecutor, wt: WorkerThread):
-        self.execWtSql(wt, "drop database {}".format(self._db.getName()))
+        
+        try:
+            self.queryWtSql(wt, "drop database {}".format(self._db.getName())) # drop database maybe failed ,because topic exists
+        except taos.error.ProgrammingError as err:
+            errno = Helper.convertErrno(err.errno)
+            if errno in [0x0203]: # drop maybe failed 
+                pass
+
         Logging.debug("[OPS] database dropped at {}".format(time.time()))
 
+
+class TaskCreateStream(StateTransitionTask):
+    
+    @classmethod
+    def getEndState(cls):
+        return StateHasData()
+
+    @classmethod
+    def canBeginFrom(cls, state: AnyState):
+        return state.canCreateStreams()
+
+    def _executeInternal(self, te: TaskExecutor, wt: WorkerThread):
+        dbname = self._db.getName()
+        
+        sub_stream_name = dbname+ '_sub_stream'
+        sub_stream_tb_name = 'stream_tb_sub'
+        super_stream_name = dbname+ '_super_stream'
+        super_stream_tb_name = 'stream_tb_super'
+        if not self._db.exists(wt.getDbConn()):
+            Logging.debug("Skipping task, no DB yet")
+            return
+
+        sTable = self._db.getFixedSuperTable() # type: TdSuperTable
+        # wt.execSql("use db")    # should always be in place
+        stbname =sTable.getName()
+        sub_tables = sTable.getRegTables(wt.getDbConn())
+        aggExpr = Dice.choice([                
+                    'count(*)', 'avg(speed)', 'sum(speed)', 'stddev(speed)','min(speed)', 'max(speed)', 'first(speed)', 'last(speed)',
+                    'apercentile(speed, 10)', 'last_row(*)',  'twa(speed)']) 
+        
+        stream_sql = '' # set default value
+
+        if sub_tables:
+            sub_tbname = sub_tables[0]
+            # create stream with query above sub_table
+            stream_sql = 'create stream {} into {}.{} as select  {}, avg(speed) FROM {}.{}  PARTITION BY tbname INTERVAL(5s) SLIDING(3s)  '.\
+            format(sub_stream_name,dbname,sub_stream_tb_name ,aggExpr,dbname,sub_tbname)
+        else:
+            stream_sql = 'create stream {} into {}.{} as select  {}, avg(speed) FROM {}.{}  PARTITION BY tbname INTERVAL(5s) SLIDING(3s)  '.\
+            format(super_stream_name,dbname,super_stream_tb_name,aggExpr, dbname,stbname)
+        self.execWtSql(wt, stream_sql)
+        Logging.debug("[OPS] stream is creating at {}".format(time.time()))
+
+
+class TaskCreateTopic(StateTransitionTask):
+    
+    @classmethod
+    def getEndState(cls):
+        return StateHasData()
+
+    @classmethod
+    def canBeginFrom(cls, state: AnyState):
+        return state.canCreateTopic()
+
+    def _executeInternal(self, te: TaskExecutor, wt: WorkerThread):
+        dbname = self._db.getName()
+       
+        sub_topic_name = dbname+ '_sub_topic'
+        super_topic_name = dbname+ '_super_topic'
+        stable_topic  = dbname+ '_stable_topic'
+        db_topic = 'database_' + dbname+ '_topics'
+        if not self._db.exists(wt.getDbConn()):
+            Logging.debug("Skipping task, no DB yet")
+            return
+
+        sTable = self._db.getFixedSuperTable() # type: TdSuperTable
+        # wt.execSql("use db")    # should always be in place
+        # create topic if not exists topic_ctb_column as select ts, c1, c2, c3 from stb1;
+
+        stbname =sTable.getName()
+        sub_tables = sTable.getRegTables(wt.getDbConn())
+
+        scalarExpr = Dice.choice([ '*','speed','color','abs(speed)','acos(speed)','asin(speed)','atan(speed)','ceil(speed)','cos(speed)','cos(speed)',
+                    'floor(speed)','log(speed,2)','pow(speed,2)','round(speed)','sin(speed)','sqrt(speed)','char_length(color)','concat(color,color)',   
+                    'concat_ws(" ", color,color," ")','length(color)', 'lower(color)',  'ltrim(color)','substr(color , 2)','upper(color)','cast(speed as double)',
+                    'cast(ts as bigint)']) 
+        topic_sql = ''  # set default value
+        if Dice.throw(3)==0:  # create topic : source data from sub query 
+            if sub_tables: # if not empty 
+                sub_tbname = sub_tables[0]
+                # create topic : source data from sub query of sub stable
+                topic_sql = 'create topic {}  as select {} FROM {}.{}  ;  '.format(sub_topic_name,scalarExpr,dbname,sub_tbname)
+            
+            else:  # create topic : source data from sub query of stable
+                topic_sql = 'create topic {}  as select  {} FROM {}.{}  '.format(super_topic_name,scalarExpr, dbname,stbname)
+        elif Dice.throw(3)==1:   # create topic :  source data from super table
+            topic_sql = 'create topic {}  AS STABLE {}.{}  '.format(stable_topic,dbname,stbname)
+  
+        elif Dice.throw(3)==2:   # create topic :  source data from whole database
+            topic_sql = 'create topic {}  AS DATABASE {}  '.format(db_topic,dbname)   
+        else:
+            pass
+
+        # exec create topics
+        self.execWtSql(wt, "use {}".format(dbname))
+        self.execWtSql(wt, topic_sql)
+        Logging.debug("[OPS] db topic is creating at {}".format(time.time()))
+
+class TaskDropTopics(StateTransitionTask):
+    
+    @classmethod
+    def getEndState(cls):
+        return StateHasData()
+
+    @classmethod
+    def canBeginFrom(cls, state: AnyState):
+        return state.canDropTopic()
+
+    def _executeInternal(self, te: TaskExecutor, wt: WorkerThread):
+        dbname = self._db.getName()
+       
+
+        if not self._db.exists(wt.getDbConn()):
+            Logging.debug("Skipping task, no DB yet")
+            return
+
+        sTable = self._db.getFixedSuperTable() # type: TdSuperTable
+        # wt.execSql("use db")    # should always be in place
+        tblName = sTable.getName()
+        if sTable.hasTopics(wt.getDbConn()):
+            sTable.dropTopics(wt.getDbConn(),dbname,None)  # drop topics of database
+            sTable.dropTopics(wt.getDbConn(),dbname,tblName)  # drop topics of stable
+
+class TaskDropStreams(StateTransitionTask):
+    
+    @classmethod
+    def getEndState(cls):
+        return StateHasData()
+
+    @classmethod
+    def canBeginFrom(cls, state: AnyState):
+        return state.canDropStream()
+
+    def _executeInternal(self, te: TaskExecutor, wt: WorkerThread):
+        # dbname = self._db.getName()
+       
+
+        if not self._db.exists(wt.getDbConn()):
+            Logging.debug("Skipping task, no DB yet")
+            return
+
+        sTable = self._db.getFixedSuperTable() # type: TdSuperTable
+        # wt.execSql("use db")    # should always be in place
+        # tblName = sTable.getName()
+        if sTable.hasStreams(wt.getDbConn()):
+            sTable.dropStreams(wt.getDbConn())  # drop stream of database
+
+class TaskDropStreamTables(StateTransitionTask):
+    
+    @classmethod
+    def getEndState(cls):
+        return StateHasData()
+
+    @classmethod
+    def canBeginFrom(cls, state: AnyState):
+        return state.canDropStream()
+
+    def _executeInternal(self, te: TaskExecutor, wt: WorkerThread):
+        # dbname = self._db.getName()
+       
+
+        if not self._db.exists(wt.getDbConn()):
+            Logging.debug("Skipping task, no DB yet")
+            return
+
+        sTable = self._db.getFixedSuperTable() # type: TdSuperTable
+        wt.execSql("use db")    # should always be in place
+        # tblName = sTable.getName()
+        if sTable.hasStreamTables(wt.getDbConn()):
+            sTable.dropStreamTables(wt.getDbConn())   # drop stream tables
+
+class TaskCreateConsumers(StateTransitionTask):
+    
+    @classmethod
+    def getEndState(cls):
+        return StateHasData()
+
+    @classmethod
+    def canBeginFrom(cls, state: AnyState):
+        return state.canCreateConsumers()  
+
+    def _executeInternal(self, te: TaskExecutor, wt: WorkerThread):
+
+        if Config.getConfig().connector_type == 'native':   
+ 
+            sTable = self._db.getFixedSuperTable() # type: TdSuperTable
+            # wt.execSql("use db")    # should always be in place
+            if sTable.hasTopics(wt.getDbConn()):
+                sTable.createConsumer(wt.getDbConn(),random.randint(1,10))
+                pass
+        else:
+            print(" restful not support tmq consumers")
+            return 
+
+        
 class TaskCreateSuperTable(StateTransitionTask):
     @classmethod
     def getEndState(cls):
@@ -1673,7 +1953,7 @@ class TaskCreateSuperTable(StateTransitionTask):
 
         sTable = self._db.getFixedSuperTable() # type: TdSuperTable
         # wt.execSql("use db")    # should always be in place
-
+        
         sTable.create(wt.getDbConn(),
                       {'ts': TdDataType.TIMESTAMP, 'speed': TdDataType.INT, 'color': TdDataType.BINARY16}, {
                           'b': TdDataType.BINARY200, 'f': TdDataType.FLOAT},
@@ -1688,14 +1968,17 @@ class TdSuperTable:
     def __init__(self, stName, dbName):
         self._stName = stName
         self._dbName = dbName
+        self._consumerLists = {}
+        self._ConsumerInsts = []
 
     def getName(self):
         return self._stName
 
+
     def drop(self, dbc, skipCheck = False):
         dbName = self._dbName
         if self.exists(dbc) : # if myself exists
-            fullTableName = dbName + '.' + self._stName                
+            fullTableName = dbName + '.' + self._stName        
             dbc.execute("DROP TABLE {}".format(fullTableName))
         else:
             if not skipCheck:
@@ -1711,10 +1994,12 @@ class TdSuperTable:
 
         dbName = self._dbName
         dbc.execute("USE " + dbName)
-        fullTableName = dbName + '.' + self._stName       
+        fullTableName = dbName + '.' + self._stName     
+
         if dbc.existsSuperTable(self._stName):
-            if dropIfExists: 
-                dbc.execute("DROP TABLE {}".format(fullTableName))
+            if dropIfExists:            
+                dbc.execute("DROP TABLE {}".format(fullTableName))        
+                
             else: # error
                 raise CrashGenError("Cannot create super table, already exists: {}".format(self._stName))
 
@@ -1728,12 +2013,61 @@ class TdSuperTable:
             )            
         else:
             sql += " TAGS (dummy int) "
-        dbc.execute(sql)        
+        dbc.execute(sql) 
+
+    def createConsumer(self, dbc,Consumer_nums):   
+        
+        def generateConsumer(current_topic_list):
+            conf = TaosTmqConf()
+            conf.set("group.id", "tg2")
+            conf.set("td.connect.user", "root")
+            conf.set("td.connect.pass", "taosdata")
+            conf.set("enable.auto.commit", "true")
+            def tmq_commit_cb_print(tmq, resp, offset, param=None):
+                print(f"commit: {resp}, tmq: {tmq}, offset: {offset}, param: {param}")
+            conf.set_auto_commit_cb(tmq_commit_cb_print, None)
+            consumer = conf.new_consumer()   
+            topic_list = TaosTmqList()
+            for topic in current_topic_list:
+                topic_list.append(topic)
+            try:
+                consumer.subscribe(topic_list)
+            except TmqError as e :
+                pass
+
+            # consumer with random work life 
+            time_start = time.time()
+            while 1:
+                res = consumer.poll(1000)
+                if time.time() - time_start >random.randint(5,50) :
+                    break
+            try:
+                consumer.unsubscribe()
+            except TmqError as e :
+                pass
+            return
+        
+        # mulit Consumer 
+        current_topic_list = self.getTopicLists(dbc)
+        for i in range(Consumer_nums):
+            consumer_inst = threading.Thread(target=generateConsumer, args=(current_topic_list,))
+            self._ConsumerInsts.append(consumer_inst)
+
+        for ConsumerInst in self._ConsumerInsts:
+            ConsumerInst.start()
+        for ConsumerInst in self._ConsumerInsts:
+            ConsumerInst.join()
+
+    def getTopicLists(self, dbc: DbConn):
+        dbc.query("show topics ")
+        topics = dbc.getQueryResult()
+        topicLists = [v[0] for v in topics]
+        return topicLists
 
     def getRegTables(self, dbc: DbConn):
         dbName = self._dbName
         try:
-            dbc.query("select TBNAME from {}.{}".format(dbName, self._stName))  # TODO: analyze result set later            
+            dbc.query("select distinct TBNAME from {}.{}".format(dbName, self._stName))  # TODO: analyze result set later            
         except taos.error.ProgrammingError as err:                    
             errno2 = Helper.convertErrno(err.errno) 
             Logging.debug("[=] Failed to get tables from super table: errno=0x{:X}, msg: {}".format(errno2, err))
@@ -1743,7 +2077,75 @@ class TdSuperTable:
         return [v[0] for v in qr] # list transformation, ref: https://stackoverflow.com/questions/643823/python-list-transformation
 
     def hasRegTables(self, dbc: DbConn):
-        return dbc.query("SELECT * FROM {}.{}".format(self._dbName, self._stName)) > 0
+ 
+        if dbc.existsSuperTable(self._stName):
+
+            return dbc.query("SELECT * FROM {}.{}".format(self._dbName, self._stName)) > 0
+        else:
+            return False
+
+    def hasStreamTables(self,dbc: DbConn):
+        
+        return dbc.query("show {}.stables like 'stream_tb%'".format(self._dbName)) > 0
+
+    def hasStreams(self,dbc: DbConn):
+        return dbc.query("show streams") > 0
+
+    def hasTopics(self,dbc: DbConn):
+       
+        return dbc.query("show topics") > 0
+
+    def dropTopics(self,dbc: DbConn , dbname=None,stb_name=None):
+        dbc.query("show topics ")
+        topics = dbc.getQueryResult()
+
+        if dbname !=None and stb_name == None :
+            
+            for topic in topics:
+                if dbname in topic[0] and topic[0].startswith("database"):
+                    try:
+                        dbc.execute('drop topic {}'.format(topic[0]))
+                        Logging.debug("[OPS] topic  {} is droping at {}".format(topic,time.time()))
+                    except taos.error.ProgrammingError as err:                    
+                        errno = Helper.convertErrno(err.errno)
+                        if errno in [0x03EB]: # Topic subscribed cannot be dropped
+                           pass
+                            # for subsript in subscriptions:
+                                
+                        else:
+                            pass
+
+                        pass
+            return True
+        elif dbname !=None and stb_name!= None:
+            for topic in topics:
+                if topic[0].startswith(self._dbName) and topic[0].endswith('topic'):
+                    dbc.execute('drop topic {}'.format(topic[0]))
+                    Logging.debug("[OPS] topic  {} is droping at {}".format(topic,time.time()))
+            return True
+        else:
+            return True
+            pass
+
+    def dropStreams(self,dbc:DbConn):
+        dbc.query("show streams ")
+        Streams = dbc.getQueryResult()
+        for Stream in Streams:
+            if Stream[0].startswith(self._dbName):
+                dbc.execute('drop stream {}'.format(Stream[0]))
+            
+        return not dbc.query("show streams ") > 0
+
+    def dropStreamTables(self, dbc: DbConn):
+        dbc.query("show {}.stables like 'stream_tb%'".format(self._dbName))
+        
+        StreamTables = dbc.getQueryResult()
+
+        for StreamTable in  StreamTables:
+            if self.dropStreams(dbc):
+                dbc.execute('drop table {}.{}'.format(self._dbName,StreamTable[0]))
+            
+        return not dbc.query("show {}.stables like 'stream_tb%'".format(self._dbName))
 
     def ensureRegTable(self, task: Optional[Task], dbc: DbConn, regTableName: str):
         '''
@@ -1838,10 +2240,46 @@ class TdSuperTable:
             # Run the query against the regular table first
             doAggr = (Dice.throw(2) == 0) # 1 in 2 chance
             if not doAggr: # don't do aggregate query, just simple one
+                commonExpr = Dice.choice([
+                    '*',
+                    'abs(speed)',
+                    'acos(speed)',
+                    'asin(speed)',
+                    'atan(speed)',
+                    'ceil(speed)',
+                    'cos(speed)',
+                    'cos(speed)',
+                    'floor(speed)',
+                    'log(speed,2)',
+                    'pow(speed,2)',
+                    'round(speed)',
+                    'sin(speed)',
+                    'sqrt(speed)',
+                    'char_length(color)',
+                    'concat(color,color)',   
+                    'concat_ws(" ", color,color," ")',
+                    'length(color)',
+                    'lower(color)',
+                    'ltrim(color)',
+                    'substr(color , 2)',
+                    'upper(color)',
+                    'cast(speed as double)',
+                    'cast(ts as bigint)',
+                    # 'TO_ISO8601(color)',
+                    # 'TO_UNIXTIMESTAMP(ts)',
+                    'now()',
+                    'timediff(ts,now)',
+                    'timezone()',
+                    'TIMETRUNCATE(ts,1s)',
+                    'TIMEZONE()',
+                    'TODAY()',
+                    'distinct(color)'
+                ]
+                )
                 ret.append(SqlQuery( # reg table
-                    "select {} from {}.{}".format('*', self._dbName, rTbName)))
+                    "select {} from {}.{}".format(commonExpr, self._dbName, rTbName)))
                 ret.append(SqlQuery( # super table
-                    "select {} from {}.{}".format('*', self._dbName, self.getName())))
+                    "select {} from {}.{}".format(commonExpr, self._dbName, self.getName())))
             else: # Aggregate query
                 aggExpr = Dice.choice([                
                     'count(*)',
@@ -1857,17 +2295,34 @@ class TdSuperTable:
                     'top(speed, 50)', # TODO: not supported?
                     'bottom(speed, 50)', # TODO: not supported?
                     'apercentile(speed, 10)', # TODO: TD-1316
-                    # 'last_row(speed)', # TODO: commented out per TD-3231, we should re-create
+                    'last_row(*)', # TODO: commented out per TD-3231, we should re-create
                     # Transformation Functions
                     # 'diff(speed)', # TODO: no supported?!
-                    'spread(speed)'
+                    'spread(speed)',
+                    'elapsed(ts)',
+                    'mode(speed)',
+                    'bottom(speed,1)',
+                    'top(speed,1)',
+                    'tail(speed,1)',
+                    'unique(color)',
+                    'csum(speed)',
+                    'DERIVATIVE(speed,1s,1)',
+                    'diff(speed,1)',
+                    'irate(speed)',
+                    'mavg(speed,3)',
+                    'sample(speed,5)',
+                    'STATECOUNT(speed,"LT",1)',
+                    'STATEDURATION(speed,"LT",1)',
+                    'twa(speed)' 
+                    
                     ]) # TODO: add more from 'top'
 
             
                 # if aggExpr not in ['stddev(speed)']: # STDDEV not valid for super tables?! (Done in TD-1049)
                 sql = "select {} from {}.{}".format(aggExpr, self._dbName, self.getName())
                 if Dice.throw(3) == 0: # 1 in X chance
-                    sql = sql + ' GROUP BY color'
+                    partion_expr = Dice.choice(['color','tbname'])
+                    sql = sql + ' partition BY ' + partion_expr + ' order by ' + partion_expr
                     Progress.emit(Progress.QUERY_GROUP_BY)
                     # Logging.info("Executing GROUP-BY query: " + sql)
                 ret.append(SqlQuery(sql))
@@ -1974,6 +2429,7 @@ class TaskDropSuperTable(StateTransitionTask):
                         isSuccess = False
                         Logging.debug("[DB] Acceptable error when dropping a table")
                     continue  # try to delete next regular table
+                   
 
                 if (not tickOutput):
                     tickOutput = True  # Print only one time
@@ -1985,6 +2441,8 @@ class TaskDropSuperTable(StateTransitionTask):
         # Drop the super table itself
         tblName = self._db.getFixedSuperTableName()
         self.execWtSql(wt, "drop table {}.{}".format(self._db.getName(), tblName))
+       
+
 
 
 class TaskAlterTags(StateTransitionTask):
@@ -2234,6 +2692,220 @@ class TaskAddData(StateTransitionTask):
 
             self.activeTable.discard(i)  # not raising an error, unlike remove
 
+class TaskDeleteData(StateTransitionTask):
+    # Track which table is being actively worked on
+    activeTable: Set[int] = set()
+
+    # We use these two files to record operations to DB, useful for power-off tests
+    fAddLogReady = None # type: Optional[io.TextIOWrapper]
+    fAddLogDone  = None # type: Optional[io.TextIOWrapper]
+
+    @classmethod
+    def prepToRecordOps(cls):
+        if Config.getConfig().record_ops:
+            if (cls.fAddLogReady is None):
+                Logging.info(
+                    "Recording in a file operations to be performed...")
+                cls.fAddLogReady = open("add_log_ready.txt", "w")
+            if (cls.fAddLogDone is None):
+                Logging.info("Recording in a file operations completed...")
+                cls.fAddLogDone = open("add_log_done.txt", "w")
+
+    @classmethod
+    def getEndState(cls):
+        return StateHasData()
+
+    @classmethod
+    def canBeginFrom(cls, state: AnyState):
+        return state.canDeleteData()
+
+    def _lockTableIfNeeded(self, fullTableName, extraMsg = ''):
+        if Config.getConfig().verify_data:
+            # Logging.info("Locking table: {}".format(fullTableName))
+            self.lockTable(fullTableName) 
+            # Logging.info("Table locked {}: {}".format(extraMsg, fullTableName))
+                # print("_w" + str(nextInt % 100), end="", flush=True) # Trace what was written
+        else:
+            # Logging.info("Skipping locking table")
+            pass
+
+    def _unlockTableIfNeeded(self, fullTableName):
+        if Config.getConfig().verify_data:
+            # Logging.info("Unlocking table: {}".format(fullTableName))
+            self.unlockTable(fullTableName) 
+            # Logging.info("Table unlocked: {}".format(fullTableName))
+        else:
+            pass
+            # Logging.info("Skipping unlocking table")
+
+    def _deleteData(self, db: Database, dbc, regTableName, te: TaskExecutor): # implied: NOT in batches
+        numRecords = self.LARGE_NUMBER_OF_RECORDS if Config.getConfig().larger_data else self.SMALL_NUMBER_OF_RECORDS        
+        del_Records = int(numRecords/5)
+        if Dice.throw(2) == 0:
+            for j in range(del_Records):  # number of records per table
+                intToWrite = db.getNextInt()
+                nextTick = db.getNextTick()
+                # nextColor = db.getNextColor()
+                if Config.getConfig().record_ops:
+                    self.prepToRecordOps()
+                    if self.fAddLogReady is None:
+                        raise CrashGenError("Unexpected empty fAddLogReady")
+                    self.fAddLogReady.write("Ready to delete {} to {}\n".format(intToWrite, regTableName))
+                    self.fAddLogReady.flush()
+                    os.fsync(self.fAddLogReady.fileno())
+                    
+                # TODO: too ugly trying to lock the table reliably, refactor...
+                fullTableName = db.getName() + '.' + regTableName
+                self._lockTableIfNeeded(fullTableName) # so that we are verify read-back. TODO: deal with exceptions before unlock
+                
+                try:
+                    sql = "delete from {} where ts = '{}' ;".format( # removed: tags ('{}', {})
+                        fullTableName,
+                        # ds.getFixedSuperTableName(),
+                        # ds.getNextBinary(), ds.getNextFloat(),
+                        nextTick)
+
+                    # print(sql)
+                    # Logging.info("Adding data: {}".format(sql))
+                    dbc.execute(sql)
+                    # Logging.info("Data added: {}".format(sql))
+                    intWrote = intToWrite
+
+                    # Quick hack, attach an update statement here. TODO: create an "update" task
+                    if (not Config.getConfig().use_shadow_db) and Dice.throw(5) == 0: # 1 in N chance, plus not using shaddow DB
+                        intToUpdate = db.getNextInt() # Updated， but should not succeed
+                        # nextColor = db.getNextColor()
+                        sql = "delete from {} where ts = '{}' ;".format( # "INSERt" means "update" here
+                        fullTableName,
+                        nextTick)
+                        # sql = "UPDATE {} set speed={}, color='{}' WHERE ts='{}'".format(
+                        #     fullTableName, db.getNextInt(), db.getNextColor(), nextTick)
+                        dbc.execute(sql)
+                        intWrote = intToUpdate # We updated, seems TDengine non-cluster accepts this.
+
+                except: # Any exception at all
+                    self._unlockTableIfNeeded(fullTableName) 
+                    raise
+
+                # Now read it back and verify, we might encounter an error if table is dropped
+                if Config.getConfig().verify_data: # only if command line asks for it
+                    try:
+                        dbc.query("SELECT * from {}.{} WHERE ts='{}'".
+                            format(db.getName(), regTableName, nextTick))
+                        result = dbc.getQueryResult()
+                        if len(result)==0:
+                            # means data has been delete
+                            print("D1",end="") # DF means delete failed 
+                        else:
+                            print("DF",end="") # DF means delete failed 
+                    except taos.error.ProgrammingError as err:
+                        errno = Helper.convertErrno(err.errno)
+                        # if errno == CrashGenError.INVALID_EMPTY_RESULT: # empty result
+                        #     print("D1",end="")   # D1 means delete data success and only 1 record
+
+                        if errno in [0x218, 0x362,0x2662]: # table doesn't exist
+                            # do nothing
+                            pass
+                        else:
+                            # Re-throw otherwise
+                            raise
+                    finally:
+                        self._unlockTableIfNeeded(fullTableName) # Quite ugly, refactor lock/unlock
+                # Done with read-back verification, unlock the table now
+                # Successfully wrote the data into the DB, let's record it somehow
+                te.recordDataMark(intWrote)
+            else:
+
+                # delete all datas and verify datas ,expected table is empty
+                if Config.getConfig().record_ops:
+                    self.prepToRecordOps()
+                    if self.fAddLogReady is None:
+                        raise CrashGenError("Unexpected empty fAddLogReady")
+                    self.fAddLogReady.write("Ready to delete {} to {}\n".format(intToWrite, regTableName))
+                    self.fAddLogReady.flush()
+                    os.fsync(self.fAddLogReady.fileno())
+                    
+                # TODO: too ugly trying to lock the table reliably, refactor...
+                fullTableName = db.getName() + '.' + regTableName
+                self._lockTableIfNeeded(fullTableName) # so that we are verify read-back. TODO: deal with exceptions before unlock
+                
+                try:
+                    sql = "delete from {} ;".format( # removed: tags ('{}', {})
+                        fullTableName)
+                    # Logging.info("Adding data: {}".format(sql))
+                    dbc.execute(sql)
+                    # Logging.info("Data added: {}".format(sql))
+                
+                    # Quick hack, attach an update statement here. TODO: create an "update" task
+                    if (not Config.getConfig().use_shadow_db) and Dice.throw(5) == 0: # 1 in N chance, plus not using shaddow DB
+                        sql = "delete from {}  ;".format( # "INSERt" means "update" here
+                        fullTableName)
+                        dbc.execute(sql)
+
+                except: # Any exception at all
+                    self._unlockTableIfNeeded(fullTableName) 
+                    raise
+
+                # Now read it back and verify, we might encounter an error if table is dropped
+                if Config.getConfig().verify_data: # only if command line asks for it
+                    try:
+                        dbc.query("SELECT * from {}.{} WHERE ts='{}'".
+                            format(db.getName(), regTableName, nextTick))
+                        result = dbc.getQueryResult()
+                        if len(result)==0:
+                            # means data has been delete
+                            print("DA",end="")
+                        else:
+                            print("DF",end="") # DF means delete failed 
+                    except taos.error.ProgrammingError as err:
+                        errno = Helper.convertErrno(err.errno)
+                        # if errno == CrashGenError.INVALID_EMPTY_RESULT: # empty result
+                        #     print("Da",end="")  # Da means delete data success and for all datas
+
+                        if errno in [0x218, 0x362,0x2662]: # table doesn't exist
+                            # do nothing
+                            pass
+                        else:
+                            # Re-throw otherwise
+                            raise
+                    finally:
+                        self._unlockTableIfNeeded(fullTableName) # Quite ugly, refactor lock/unlock
+                # Done with read-back verification, unlock the table now
+
+            if Config.getConfig().record_ops:
+                if self.fAddLogDone is None:
+                    raise CrashGenError("Unexpected empty fAddLogDone")
+                self.fAddLogDone.write("Wrote {} to {}\n".format(intWrote, regTableName))
+                self.fAddLogDone.flush()
+                os.fsync(self.fAddLogDone.fileno())
+
+    def _executeInternal(self, te: TaskExecutor, wt: WorkerThread):
+        # ds = self._dbManager # Quite DANGEROUS here, may result in multi-thread client access
+        db = self._db
+        dbc = wt.getDbConn()
+        numTables  = self.LARGE_NUMBER_OF_TABLES  if Config.getConfig().larger_data else self.SMALL_NUMBER_OF_TABLES
+        numRecords = self.LARGE_NUMBER_OF_RECORDS if Config.getConfig().larger_data else self.SMALL_NUMBER_OF_RECORDS
+        tblSeq = list(range(numTables ))
+        random.shuffle(tblSeq) # now we have random sequence
+        for i in tblSeq:
+            if (i in self.activeTable):  # wow already active
+                # print("x", end="", flush=True) # concurrent insertion
+                Progress.emit(Progress.CONCURRENT_INSERTION)
+            else:
+                self.activeTable.add(i)  # marking it active
+            
+            dbName = db.getName()
+            sTable = db.getFixedSuperTable()
+            regTableName = self.getRegTableName(i)  # "db.reg_table_{}".format(i)            
+            fullTableName = dbName + '.' + regTableName
+            # self._lockTable(fullTableName) # "create table" below. Stop it if the table is "locked"
+            sTable.ensureRegTable(self, wt.getDbConn(), regTableName)  # Ensure the table exists           
+            # self._unlockTable(fullTableName)
+           
+            self._deleteData(db, dbc, regTableName, te)
+     
+            self.activeTable.discard(i)  # not raising an error, unlike remove
+
 
 class ThreadStacks: # stack info for all threads
     def __init__(self):
@@ -2244,6 +2916,9 @@ class ThreadStacks: # stack info for all threads
             shortTid = th.native_id % 10000 #type: ignore                      
             self._allStacks[shortTid] = stack # Was using th.native_id
 
+    def record_current_time(self,current_time):
+        self.current_time = current_time
+
     def print(self, filteredEndName = None, filterInternal = False):
         for shortTid, stack in self._allStacks.items(): # for each thread, stack frames top to bottom
             lastFrame = stack[-1]
@@ -2258,8 +2933,11 @@ class ThreadStacks: # stack info for all threads
                     continue # ignore
             # Now print
             print("\n<----- Thread Info for LWP/ID: {} (most recent call last) <-----".format(shortTid))
+            
             lastSqlForThread = DbConn.fetchSqlForThread(shortTid)
-            print("Last SQL statement attempted from thread {} is: {}".format(shortTid, lastSqlForThread))
+            last_sql_commit_time = DbConn.get_save_sql_time(shortTid)
+            # time_cost = DbConn.get_time_cost()
+            print("Last SQL statement attempted from thread {}  ({:.4f} sec ago) is: {}".format(shortTid, self.current_time-last_sql_commit_time ,lastSqlForThread))
             stackFrame = 0
             for frame in stack: # was using: reversed(stack)
                 # print(frame)
@@ -2268,6 +2946,8 @@ class ThreadStacks: # stack info for all threads
                 print("    {}".format(frame.line))
                 stackFrame += 1
             print("-----> End of Thread Info ----->\n")
+            if self.current_time-last_sql_commit_time >100:  # dead lock occured
+                print("maybe dead locked of thread {} ".format(shortTid))
 
 class ClientManager:
     def __init__(self):
@@ -2631,4 +3311,3 @@ class Container():
             return
         self._verifyValidProperty(name)
         self._cargo[name] = value
-

tests/pytest/crash_gen/shared/db.py

@@ -26,10 +26,13 @@ class DbConn:
     TYPE_NATIVE = "native-c"
     TYPE_REST =   "rest-api"
     TYPE_INVALID = "invalid"
+    
+
 
     # class variables
     lastSqlFromThreads : dict[int, str] = {} # stored by thread id, obtained from threading.current_thread().ident%10000
-
+    spendThreads : dict[int, float] = {} # stored by thread id, obtained from threading.current_thread().ident%10000
+    current_time : dict[int, float] = {}  # save current time 
     @classmethod
     def saveSqlForCurrentThread(cls, sql: str):
         '''
@@ -37,15 +40,56 @@ class DbConn:
         run into a dead-lock situation, we can pick out the deadlocked thread, and use 
         that information to find what what SQL statement is stuck.
         '''
+        
         th = threading.current_thread()        
         shortTid = th.native_id % 10000 #type: ignore
         cls.lastSqlFromThreads[shortTid] = sql # Save this for later
+        cls.record_save_sql_time()
 
     @classmethod
-    def fetchSqlForThread(cls, shortTid : int) -> str :        
+    def fetchSqlForThread(cls, shortTid : int) -> str : 
+
+        print("=======================")
         if shortTid not in cls.lastSqlFromThreads:
             raise CrashGenError("No last-attempted-SQL found for thread id: {}".format(shortTid))
-        return cls.lastSqlFromThreads[shortTid]
+        return cls.lastSqlFromThreads[shortTid] 
+
+    @classmethod
+    def get_save_sql_time(cls, shortTid : int):
+        '''
+        Let us save the last SQL statement on a per-thread basis, so that when later we 
+        run into a dead-lock situation, we can pick out the deadlocked thread, and use 
+        that information to find what what SQL statement is stuck.
+        '''
+        return cls.current_time[shortTid] 
+
+    @classmethod
+    def record_save_sql_time(cls):
+        '''
+        Let us save the last SQL statement on a per-thread basis, so that when later we 
+        run into a dead-lock situation, we can pick out the deadlocked thread, and use 
+        that information to find what what SQL statement is stuck.
+        '''
+        th = threading.current_thread()        
+        shortTid = th.native_id % 10000 #type: ignore
+        cls.current_time[shortTid] = float(time.time()) # Save this for later
+ 
+    @classmethod
+    def sql_exec_spend(cls, cost: float):
+        '''
+        Let us save the last SQL statement on a per-thread basis, so that when later we 
+        run into a dead-lock situation, we can pick out the deadlocked thread, and use 
+        that information to find what what SQL statement is stuck.
+        '''
+        th = threading.current_thread()        
+        shortTid = th.native_id % 10000 #type: ignore
+        cls.spendThreads[shortTid] = cost # Save this for later
+
+    @classmethod
+    def get_time_cost(cls) ->float:
+        th = threading.current_thread()        
+        shortTid = th.native_id % 10000 #type: ignore
+        return cls.spendThreads.get(shortTid)
 
     @classmethod
     def create(cls, connType, dbTarget):
@@ -61,6 +105,7 @@ class DbConn:
     def createNative(cls, dbTarget) -> DbConn:
         return cls.create(cls.TYPE_NATIVE, dbTarget)
 
+
     @classmethod
     def createRest(cls, dbTarget) -> DbConn:
         return cls.create(cls.TYPE_REST, dbTarget)
@@ -75,6 +120,7 @@ class DbConn:
         return "[DbConn: type={}, target={}]".format(self._type, self._dbTarget)
 
     def getLastSql(self):
+        
         return self._lastSql
 
     def open(self):
@@ -184,13 +230,19 @@ class DbConnRest(DbConn):
     def _doSql(self, sql):
         self._lastSql = sql # remember this, last SQL attempted
         self.saveSqlForCurrentThread(sql) # Save in global structure too. #TODO: combine with above
-        try:
+        time_cost = -1
+        time_start = time.time()
+        try:   
             r = requests.post(self._url, 
                 data = sql,
-                auth = HTTPBasicAuth('root', 'taosdata'))         
+                auth = HTTPBasicAuth('root', 'taosdata'))    
         except:
             print("REST API Failure (TODO: more info here)")
+            self.sql_exec_spend(-2)
             raise
+        finally:
+            time_cost = time.time()- time_start 
+            self.sql_exec_spend(time_cost)
         rj = r.json()
         # Sanity check for the "Json Result"
         if ('status' not in rj):
@@ -223,6 +275,8 @@ class DbConnRest(DbConn):
             "[SQL-REST] Execution Result, nRows = {}, SQL = {}".format(nRows, sql))
         return nRows
 
+    
+
     def query(self, sql):  # return rows affected
         return self.execute(sql)
 
@@ -336,6 +390,7 @@ class MyTDSql:
             raise
         return self.affectedRows
 
+
 class DbTarget:
     def __init__(self, cfgPath, hostAddr, port):
         self.cfgPath  = cfgPath
@@ -355,6 +410,7 @@ class DbConnNative(DbConn):
     # _connInfoDisplayed = False # TODO: find another way to display this
     totalConnections = 0 # Not private
     totalRequests = 0 
+    time_cost = -1
 
     def __init__(self, dbTarget):
         super().__init__(dbTarget)
@@ -413,8 +469,18 @@ class DbConnNative(DbConn):
                 "Cannot exec SQL unless db connection is open", CrashGenError.DB_CONNECTION_NOT_OPEN)
         Logging.debug("[SQL] Executing SQL: {}".format(sql))
         self._lastSql = sql
+        time_cost = -1
+        nRows = 0
+        time_start = time.time()
         self.saveSqlForCurrentThread(sql) # Save in global structure too. #TODO: combine with above
-        nRows = self._tdSql.execute(sql)
+        try:
+            nRows= self._tdSql.execute(sql)
+        except Exception as e:
+            self.sql_exec_spend(-2)
+        finally:
+            time_cost =  time.time() - time_start
+            self.sql_exec_spend(time_cost)
+        
         cls = self.__class__
         cls.totalRequests += 1
         Logging.debug(
@@ -494,4 +560,3 @@ class DbManager():
             self._dbConn.close()
             self._dbConn = None
             Logging.debug("DbManager closed DB connection...")
-