[TD-1823] <test> add test case for data loss

tests/pytest/fulltest.sh

@@ -152,6 +152,7 @@ python3 ./test.py -f query/queryInsertValue.py
 python3 ./test.py -f query/queryConnection.py
 python3 ./test.py -f query/natualInterval.py
 python3 ./test.py -f query/bug1471.py
+python3 ./test.py -f query/dataLossTest.py
 
 #stream
 python3 ./test.py -f stream/metric_1.py

tests/pytest/query/dataLossTest.py

@@ -0,0 +1,76 @@
+###################################################################
+#           Copyright (c) 2016 by TAOS Technologies, Inc.
+#                     All rights reserved.
+#
+#  This file is proprietary and confidential to TAOS Technologies.
+#  No part of this file may be reproduced, stored, transmitted,
+#  disclosed or used in any form or by any means other than as
+#  expressly provided by the written permission from Jianhui Tao
+#
+###################################################################
+
+# -*- coding: utf-8 -*-
+
+import sys
+import taos
+import os
+from util.log import *
+from util.cases import *
+from util.sql import *
+from util.dnodes import *
+import inspect
+
+
+class TDTestCase:
+    def init(self, conn, logSql):
+        tdLog.debug("start to execute %s" % __file__)        
+        tdSql.init(conn.cursor())
+
+        self.numberOfTables = 240
+        self.numberOfRecords = 10000
+
+    def run(self):
+        tdSql.prepare()
+
+        os.system("yes | taosdemo -t %d -n %d" % (self.numberOfTables, self.numberOfRecords))
+        print("==============step1")
+
+        tdSql.execute("use test")        
+        sql = "select count(*) from meters"
+        tdSql.query(sql)
+        rows = tdSql.getData(0, 0)
+        print ("number of records: %d" % rows)
+
+        newRows = rows        
+        for i in range(10000):
+            print("kill taosd")
+            time.sleep(10)         
+            os.system("sudo kill -9 $(pgrep taosd)")
+            tdDnodes.startWithoutSleep(1)
+            while True:
+                try:
+                    tdSql.query(sql)
+                    newRows = tdSql.getData(0, 0)
+                    print("numer of records after kill taosd %d" % newRows)
+                    time.sleep(10)
+                    break
+                except Exception as e:                
+                    pass
+                    continue
+            
+            if newRows < rows:
+                caller = inspect.getframeinfo(inspect.stack()[1][0])
+                args = (caller.filename, caller.lineno, sql, newRows, rows)
+                tdLog.exit("%s(%d) failed: sql:%s, queryRows:%d != expect:%d" % args)
+                break
+        
+        tdSql.query(sql)
+        tdSql.checkData(0, 0, rows)
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())

tests/pytest/util/dnodes.py

@@ -15,6 +15,7 @@ import sys
 import os
 import os.path
 import subprocess
+from time import sleep
 from util.log import *
 
 
@@ -210,6 +211,7 @@ class TDDnode:
             (self.index, self.cfgPath))
 
     def getBuildPath(self):
+        buildPath = ""
         selfPath = os.path.dirname(os.path.realpath(__file__))
 
         if ("community" in selfPath):
@@ -256,6 +258,35 @@ class TDDnode:
 
         tdLog.debug("wait 5 seconds for the dnode:%d to start." % (self.index))
         time.sleep(5)
+    
+    def startWithoutSleep(self):
+        buildPath = self.getBuildPath()
+
+        if (buildPath == ""):
+            tdLog.exit("taosd not found!")
+        else:
+            tdLog.info("taosd found in %s" % buildPath)
+
+        binPath = buildPath + "/build/bin/taosd"
+
+        if self.deployed == 0:
+            tdLog.exit("dnode:%d is not deployed" % (self.index))
+
+        if self.valgrind == 0:
+            cmd = "nohup %s -c %s > /dev/null 2>&1 & " % (
+                binPath, self.cfgDir)
+        else:
+            valgrindCmdline = "valgrind --tool=memcheck --leak-check=full --show-reachable=no --track-origins=yes --show-leak-kinds=all -v --workaround-gcc296-bugs=yes"
+
+            cmd = "nohup %s %s -c %s 2>&1 & " % (
+                valgrindCmdline, binPath, self.cfgDir)
+
+            print(cmd)
+
+        if os.system(cmd) != 0:
+            tdLog.exit(cmd)
+        self.running = 1
+        tdLog.debug("dnode:%d is running with %s " % (self.index, cmd))
 
     def stop(self):
         if self.valgrind == 0:
@@ -425,6 +456,10 @@ class TDDnodes:
     def start(self, index):
         self.check(index)
         self.dnodes[index - 1].start()
+    
+    def startWithoutSleep(self, index):
+        self.check(index)
+        self.dnodes[index - 1].startWithoutSleep()
 
     def stop(self, index):
         self.check(index)