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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ZOOKEEPER-3219) Fix flaky FileChangeWatcherTest
Date Thu, 20 Dec 2018 16:02:00 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-3219?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16725973#comment-16725973
] 

Hudson commented on ZOOKEEPER-3219:
-----------------------------------

SUCCESS: Integrated in Jenkins build Zookeeper-trunk-single-thread #155 (See [https://builds.apache.org/job/Zookeeper-trunk-single-thread/155/])
ZOOKEEPER-3219: Fix flaky FileChangeWatcherTest (fangmin: rev b8c8937029ca7e15116e91c6a6c436368ac0f9bb)
* (edit) zookeeper-server/src/test/java/org/apache/zookeeper/common/FileChangeWatcherTest.java


> Fix flaky FileChangeWatcherTest
> -------------------------------
>
>                 Key: ZOOKEEPER-3219
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3219
>             Project: ZooKeeper
>          Issue Type: Improvement
>    Affects Versions: 3.6.0, 3.5.5
>            Reporter: Ilya Maykov
>            Assignee: Ilya Maykov
>            Priority: Minor
>             Fix For: 3.6.0
>
>
> A test I committed recently is flaky. Here is an example of failed test output from jenkins:
>  
> {code:java}
> 2018-12-17 21:52:53,824 [myid:] - INFO [main:JUnit4ZKTestRunner$LoggedInvokeMethod@77]
- RUNNING TEST METHOD testCallbackErrorDoesNotCrashWatcherThread 2018-12-17 21:52:53,826 [myid:]
- INFO [FileChangeWatcher:FileChangeWatcher$WatcherThread@193] - FileChangeWatcher thread
started 2018-12-17 21:52:54,830 [myid:] - INFO [main:FileChangeWatcherTest@237] - Modifying
file 2018-12-17 21:52:54,834 [myid:] - INFO [FileChangeWatcher:FileChangeWatcherTest@222]
- Got an update: ENTRY_CREATE zk_test_5141143184635472109 2018-12-17 21:52:54,835 [myid:]
- ERROR [FileChangeWatcher:FileChangeWatcher$WatcherThread@238] - Error from callback java.lang.RuntimeException:
This error should not crash the watcher thread at org.apache.zookeeper.common.FileChangeWatcherTest.lambda$testCallbackErrorDoesNotCrashWatcherThread$4(FileChangeWatcherTest.java:226)
at org.apache.zookeeper.common.FileChangeWatcher$WatcherThread.runLoop(FileChangeWatcher.java:236)
at org.apache.zookeeper.common.FileChangeWatcher$WatcherThread.run(FileChangeWatcher.java:205)
2018-12-17 21:52:54,837 [myid:] - INFO [main:FileChangeWatcherTest@244] - Modifying file again
2018-12-17 21:52:54,837 [myid:] - INFO [FileChangeWatcher:FileChangeWatcherTest@222] - Got
an update: ENTRY_MODIFY zk_test_5141143184635472109 2018-12-17 21:52:54,838 [myid:] - INFO
[FileChangeWatcher:FileChangeWatcherTest@222] - Got an update: ENTRY_MODIFY zk_test_5141143184635472109
2018-12-17 21:52:54,839 [myid:] - INFO [FileChangeWatcher:FileChangeWatcher$WatcherThread@215]
- FileChangeWatcher thread finished 2018-12-17 21:52:54,839 [myid:] - INFO [main:JUnit4ZKTestRunner$LoggedInvokeMethod@98]
- TEST METHOD FAILED testCallbackErrorDoesNotCrashWatcherThread java.lang.AssertionError:
expected:<2> but was:<3> at org.junit.Assert.fail(Assert.java:88) at org.junit.Assert.failNotEquals(Assert.java:834)
at org.junit.Assert.assertEquals(Assert.java:645) at org.junit.Assert.assertEquals(Assert.java:631)
at org.apache.zookeeper.common.FileChangeWatcherTest.testCallbackErrorDoesNotCrashWatcherThread(FileChangeWatcherTest.java:250)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at
java.lang.reflect.Method.invoke(Method.java:498) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.apache.zookeeper.JUnit4ZKTestRunner$LoggedInvokeMethod.evaluate(JUnit4ZKTestRunner.java:79)
at org.junit.rules.TestWatchman$1.evaluate(TestWatchman.java:53) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27) at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at junit.framework.JUnit4TestAdapter.run(JUnit4TestAdapter.java:38) at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.run(JUnitTestRunner.java:535)
at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.launch(JUnitTestRunner.java:1182)
at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(JUnitTestRunner.java:1033)
2018-12-17 21:52:54,847 [myid:] - INFO [main:ZKTestCase$1@74] - FAILED testCallbackErrorDoesNotCrashWatcherThread
java.lang.AssertionError: expected:<2> but was:<3> at org.junit.Assert.fail(Assert.java:88)
at org.junit.Assert.failNotEquals(Assert.java:834) at org.junit.Assert.assertEquals(Assert.java:645)
at org.junit.Assert.assertEquals(Assert.java:631) at org.apache.zookeeper.common.FileChangeWatcherTest.testCallbackErrorDoesNotCrashWatcherThread(FileChangeWatcherTest.java:250)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at
java.lang.reflect.Method.invoke(Method.java:498) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.apache.zookeeper.JUnit4ZKTestRunner$LoggedInvokeMethod.evaluate(JUnit4ZKTestRunner.java:79)
at org.junit.rules.TestWatchman$1.evaluate(TestWatchman.java:53) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27) at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at junit.framework.JUnit4TestAdapter.run(JUnit4TestAdapter.java:38) at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.run(JUnitTestRunner.java:535)
at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.launch(JUnitTestRunner.java:1182)
at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(JUnitTestRunner.java:1033)
2018-12-17 21:52:54,848 [myid:] - INFO [main:ZKTestCase$1@64] - FINISHED testCallbackErrorDoesNotCrashWatcherThread{code}



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