Bug 58391

Summary:	Data races on field org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.started/view/suggestedView
Product:	Tomcat 8	Reporter:	Yilong Li <yilong.li>
Component:	Catalina	Assignee:	Tomcat Developers Mailing List <dev>
Status:	RESOLVED FIXED
Severity:	normal
Priority:	P2
Version:	8.0.x-trunk
Target Milestone:	----
Hardware:	PC
OS:	Linux

Description Yilong Li 2015-09-12 16:45:01 UTC

Data race on field org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.started: {{{
    Concurrent read in thread T58 (locks held: {})
 ---->  at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.memberAdded(NonBlockingCoordinator.java:517)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.memberAdded(NonBlockingCoordinator.java:509)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberAdded(ChannelInterceptorBase.java:87)
        at org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.memberAdded(TcpFailureDetector.java:141)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberAdded(ChannelInterceptorBase.java:87)
        at org.apache.catalina.tribes.group.interceptors.DomainFilterInterceptor.memberAdded(DomainFilterInterceptor.java:65)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberAdded(ChannelInterceptorBase.java:87)
        at org.apache.catalina.tribes.group.ChannelCoordinator.memberAdded(ChannelCoordinator.java:245)
        at org.apache.catalina.tribes.membership.McastService.memberAdded(McastService.java:461)
        at org.apache.catalina.tribes.membership.McastServiceImpl$2.run(McastServiceImpl.java:397)
    T58 is created by T36
        at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:1010)

    Concurrent write in thread T20 (locks held: {Monitor@3f4a32d4})
 ---->  at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.start(NonBlockingCoordinator.java:453)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInterceptorBase.java:155)
        at org.apache.catalina.tribes.group.GroupChannel.start(GroupChannel.java:425)
        - locked Monitor@3f4a32d4 at org.apache.catalina.tribes.group.GroupChannel.start(GroupChannel.java:n/a)
        at org.apache.catalina.tribes.group.interceptors.TestNonBlockingCoordinator$1.run(TestNonBlockingCoordinator.java:53)
    T20 is created by T1
        at org.apache.catalina.tribes.group.interceptors.TestNonBlockingCoordinator.setUp(TestNonBlockingCoordinator.java:63)
}}} 

Data race on field org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.started: {{{
    Concurrent read in thread T64 (locks held: {})
 ---->  at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.memberDisappeared(NonBlockingCoordinator.java:529)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberDisappeared(ChannelInterceptorBase.java:93)
        at org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.memberDisappeared(TcpFailureDetector.java:176)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberDisappeared(ChannelInterceptorBase.java:93)
        at org.apache.catalina.tribes.group.interceptors.DomainFilterInterceptor.memberDisappeared(DomainFilterInterceptor.java:79)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberDisappeared(ChannelInterceptorBase.java:93)
        at org.apache.catalina.tribes.group.ChannelCoordinator.memberDisappeared(ChannelCoordinator.java:251)
        at org.apache.catalina.tribes.membership.McastService.memberDisappeared(McastService.java:471)
        at org.apache.catalina.tribes.membership.McastServiceImpl$1.run(McastServiceImpl.java:383)
    T64 is created by T41
        at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:1010)

    Concurrent write in thread T1 (locks held: {Monitor@566a37c1, Monitor@6dbab6f3})
 ---->  at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.stop(NonBlockingCoordinator.java:465)
        - locked Monitor@6dbab6f3 at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.stop(NonBlockingCoordinator.java:463)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.stop(ChannelInterceptorBase.java:171)
        at org.apache.catalina.tribes.group.GroupChannel.stop(GroupChannel.java:444)
        - locked Monitor@566a37c1 at org.apache.catalina.tribes.group.GroupChannel.stop(GroupChannel.java:n/a)
        at org.apache.catalina.tribes.group.interceptors.TestNonBlockingCoordinator.tearDown(TestNonBlockingCoordinator.java:127)
        at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
        at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
        at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
        at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:33)
        at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
        at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
        at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
        at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
        at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
        at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
        at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
        at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
        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)
    T1 is the main thread
}}} 

Data race on field org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.suggestedView: {{{
    Concurrent read in thread T189 (locks held: {})
 ---->  at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator$CoordinationEvent.<init>(NonBlockingCoordinator.java:782)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.memberDisappeared(NonBlockingCoordinator.java:528)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberDisappeared(ChannelInterceptorBase.java:93)
        at org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.memberDisappeared(TcpFailureDetector.java:176)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberDisappeared(ChannelInterceptorBase.java:93)
        at org.apache.catalina.tribes.group.interceptors.DomainFilterInterceptor.memberDisappeared(DomainFilterInterceptor.java:79)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberDisappeared(ChannelInterceptorBase.java:93)
        at org.apache.catalina.tribes.group.ChannelCoordinator.memberDisappeared(ChannelCoordinator.java:251)
        at org.apache.catalina.tribes.membership.McastService.memberDisappeared(McastService.java:471)
        at org.apache.catalina.tribes.membership.McastServiceImpl$1.run(McastServiceImpl.java:383)
    T189 is created by T185
        at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:1010)

    Concurrent write in thread T1 (locks held: {Monitor@2b72a0b3, Monitor@16307bd4})
 ---->  at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.stop(NonBlockingCoordinator.java:470)
        - locked Monitor@16307bd4 at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.stop(NonBlockingCoordinator.java:463)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.stop(ChannelInterceptorBase.java:171)
        at org.apache.catalina.tribes.group.GroupChannel.stop(GroupChannel.java:444)
        - locked Monitor@2b72a0b3 at org.apache.catalina.tribes.group.GroupChannel.stop(GroupChannel.java:n/a)
        at org.apache.catalina.tribes.group.interceptors.TestNonBlockingCoordinator.tearDown(TestNonBlockingCoordinator.java:127)
        at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
        at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
        at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
        at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:33)
        at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
        at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
        at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
        at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
        at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
        at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
        at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
        at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
        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)
    T1 is the main thread
}}} 

Data race on field org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.view: {{{
    Concurrent write in thread T104 (locks held: {Monitor@4ded5170})
 ---->  at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.handleViewConf(NonBlockingCoordinator.java:371)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.processCoordMessage(NonBlockingCoordinator.java:321)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.messageReceived(NonBlockingCoordinator.java:498)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:81)
        at org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.messageReceived(TcpFailureDetector.java:117)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:81)
        at org.apache.catalina.tribes.group.interceptors.DomainFilterInterceptor.messageReceived(DomainFilterInterceptor.java:48)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:81)
        at org.apache.catalina.tribes.group.ChannelCoordinator.messageReceived(ChannelCoordinator.java:262)
        at org.apache.catalina.tribes.transport.ReceiverBase.messageDataReceived(ReceiverBase.java:242)
        at org.apache.catalina.tribes.transport.nio.NioReplicationTask.drainChannel(NioReplicationTask.java:211)
        at org.apache.catalina.tribes.transport.nio.NioReplicationTask.run(NioReplicationTask.java:102)
        - locked Monitor@4ded5170 at org.apache.catalina.tribes.transport.nio.NioReplicationTask.run(NioReplicationTask.java:n/a)
    T104 is created by T26
        at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:1010)

    Concurrent read in thread T50 (locks held: {Monitor@6dbab6f3})
 ---->  at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.startElection(NonBlockingCoordinator.java:212)
        - locked Monitor@6dbab6f3 at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.startElection(NonBlockingCoordinator.java:191)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.memberAdded(NonBlockingCoordinator.java:517)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.memberAdded(NonBlockingCoordinator.java:509)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberAdded(ChannelInterceptorBase.java:87)
        at org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.memberAdded(TcpFailureDetector.java:141)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberAdded(ChannelInterceptorBase.java:87)
        at org.apache.catalina.tribes.group.interceptors.DomainFilterInterceptor.memberAdded(DomainFilterInterceptor.java:65)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberAdded(ChannelInterceptorBase.java:87)
        at org.apache.catalina.tribes.group.ChannelCoordinator.memberAdded(ChannelCoordinator.java:245)
        at org.apache.catalina.tribes.membership.McastService.memberAdded(McastService.java:461)
        at org.apache.catalina.tribes.membership.McastServiceImpl$2.run(McastServiceImpl.java:397)
    T50 is created by T41
        at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:1010)
}}} 

Data race on field org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.view: {{{
    Concurrent read in thread T50 (locks held: {})
 ---->  at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.getCoordinator(NonBlockingCoordinator.java:411)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator$CoordinationEvent.<init>(NonBlockingCoordinator.java:778)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.memberAdded(NonBlockingCoordinator.java:516)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.memberAdded(NonBlockingCoordinator.java:509)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberAdded(ChannelInterceptorBase.java:87)
        at org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.memberAdded(TcpFailureDetector.java:141)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberAdded(ChannelInterceptorBase.java:87)
        at org.apache.catalina.tribes.group.interceptors.DomainFilterInterceptor.memberAdded(DomainFilterInterceptor.java:65)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberAdded(ChannelInterceptorBase.java:87)
        at org.apache.catalina.tribes.group.ChannelCoordinator.memberAdded(ChannelCoordinator.java:245)
        at org.apache.catalina.tribes.membership.McastService.memberAdded(McastService.java:461)
        at org.apache.catalina.tribes.membership.McastServiceImpl$2.run(McastServiceImpl.java:397)
    T50 is created by T41
        at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:1010)

    Concurrent write in thread T104 (locks held: {Monitor@4ded5170})
 ---->  at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.handleViewConf(NonBlockingCoordinator.java:371)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.processCoordMessage(NonBlockingCoordinator.java:321)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.messageReceived(NonBlockingCoordinator.java:498)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:81)
        at org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.messageReceived(TcpFailureDetector.java:117)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:81)
        at org.apache.catalina.tribes.group.interceptors.DomainFilterInterceptor.messageReceived(DomainFilterInterceptor.java:48)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:81)
        at org.apache.catalina.tribes.group.ChannelCoordinator.messageReceived(ChannelCoordinator.java:262)
        at org.apache.catalina.tribes.transport.ReceiverBase.messageDataReceived(ReceiverBase.java:242)
        at org.apache.catalina.tribes.transport.nio.NioReplicationTask.drainChannel(NioReplicationTask.java:211)
        at org.apache.catalina.tribes.transport.nio.NioReplicationTask.run(NioReplicationTask.java:102)
        - locked Monitor@4ded5170 at org.apache.catalina.tribes.transport.nio.NioReplicationTask.run(NioReplicationTask.java:n/a)
    T104 is created by T26
        at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:1010)
}}} 

Data race on field org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.view: {{{
    Concurrent read in thread T69 (locks held: {})
 ---->  at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.getCoordinator(NonBlockingCoordinator.java:411)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator$CoordinationEvent.<init>(NonBlockingCoordinator.java:778)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.memberAdded(NonBlockingCoordinator.java:516)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.memberAdded(NonBlockingCoordinator.java:509)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberAdded(ChannelInterceptorBase.java:87)
        at org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.memberAdded(TcpFailureDetector.java:141)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberAdded(ChannelInterceptorBase.java:87)
        at org.apache.catalina.tribes.group.interceptors.DomainFilterInterceptor.memberAdded(DomainFilterInterceptor.java:65)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberAdded(ChannelInterceptorBase.java:87)
        at org.apache.catalina.tribes.group.ChannelCoordinator.memberAdded(ChannelCoordinator.java:245)
        at org.apache.catalina.tribes.membership.McastService.memberAdded(McastService.java:461)
        at org.apache.catalina.tribes.membership.McastServiceImpl$2.run(McastServiceImpl.java:397)
    T69 is created by T36
        at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:1010)

    Concurrent write in thread T20 (locks held: {Monitor@566a36d7})
 ---->  at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.start(NonBlockingCoordinator.java:454)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInterceptorBase.java:155)
        at org.apache.catalina.tribes.group.GroupChannel.start(GroupChannel.java:425)
        - locked Monitor@566a36d7 at org.apache.catalina.tribes.group.GroupChannel.start(GroupChannel.java:n/a)
        at org.apache.catalina.tribes.group.interceptors.TestNonBlockingCoordinator$1.run(TestNonBlockingCoordinator.java:53)
    T20 is created by T1
        at org.apache.catalina.tribes.group.interceptors.TestNonBlockingCoordinator.setUp(TestNonBlockingCoordinator.java:63)
}}} 

Data race on field org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.view: {{{
    Concurrent read in thread T189 (locks held: {})
 ---->  at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.getCoordinator(NonBlockingCoordinator.java:411)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator$CoordinationEvent.<init>(NonBlockingCoordinator.java:778)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.memberDisappeared(NonBlockingCoordinator.java:528)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberDisappeared(ChannelInterceptorBase.java:93)
        at org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.memberDisappeared(TcpFailureDetector.java:176)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberDisappeared(ChannelInterceptorBase.java:93)
        at org.apache.catalina.tribes.group.interceptors.DomainFilterInterceptor.memberDisappeared(DomainFilterInterceptor.java:79)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberDisappeared(ChannelInterceptorBase.java:93)
        at org.apache.catalina.tribes.group.ChannelCoordinator.memberDisappeared(ChannelCoordinator.java:251)
        at org.apache.catalina.tribes.membership.McastService.memberDisappeared(McastService.java:471)
        at org.apache.catalina.tribes.membership.McastServiceImpl$1.run(McastServiceImpl.java:383)
    T189 is created by T185
        at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:1010)

    Concurrent write in thread T1 (locks held: {Monitor@2b72a0b3, Monitor@16307bd4})
 ---->  at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.stop(NonBlockingCoordinator.java:468)
        - locked Monitor@16307bd4 at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.stop(NonBlockingCoordinator.java:463)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.stop(ChannelInterceptorBase.java:171)
        at org.apache.catalina.tribes.group.GroupChannel.stop(GroupChannel.java:444)
        - locked Monitor@2b72a0b3 at org.apache.catalina.tribes.group.GroupChannel.stop(GroupChannel.java:n/a)
        at org.apache.catalina.tribes.group.interceptors.TestNonBlockingCoordinator.tearDown(TestNonBlockingCoordinator.java:127)
        at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
        at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
        at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
        at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:33)
        at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
        at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
        at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
        at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
        at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
        at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
        at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
        at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
        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)
    T1 is the main thread
}}} 

Data race on field org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.view: {{{
    Concurrent read in thread T50 (locks held: {Monitor@6dbab6f3})
 ---->  at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.getLocalMember(NonBlockingCoordinator.java:603)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.startElection(NonBlockingCoordinator.java:192)
        - locked Monitor@6dbab6f3 at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.startElection(NonBlockingCoordinator.java:191)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.memberAdded(NonBlockingCoordinator.java:517)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.memberAdded(NonBlockingCoordinator.java:509)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberAdded(ChannelInterceptorBase.java:87)
        at org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.memberAdded(TcpFailureDetector.java:141)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberAdded(ChannelInterceptorBase.java:87)
        at org.apache.catalina.tribes.group.interceptors.DomainFilterInterceptor.memberAdded(DomainFilterInterceptor.java:65)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberAdded(ChannelInterceptorBase.java:87)
        at org.apache.catalina.tribes.group.ChannelCoordinator.memberAdded(ChannelCoordinator.java:245)
        at org.apache.catalina.tribes.membership.McastService.memberAdded(McastService.java:461)
        at org.apache.catalina.tribes.membership.McastServiceImpl$2.run(McastServiceImpl.java:397)
    T50 is created by T41
        at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:1010)

    Concurrent write in thread T104 (locks held: {Monitor@4ded5170})
 ---->  at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.handleViewConf(NonBlockingCoordinator.java:371)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.processCoordMessage(NonBlockingCoordinator.java:321)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.messageReceived(NonBlockingCoordinator.java:498)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:81)
        at org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.messageReceived(TcpFailureDetector.java:117)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:81)
        at org.apache.catalina.tribes.group.interceptors.DomainFilterInterceptor.messageReceived(DomainFilterInterceptor.java:48)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:81)
        at org.apache.catalina.tribes.group.ChannelCoordinator.messageReceived(ChannelCoordinator.java:262)
        at org.apache.catalina.tribes.transport.ReceiverBase.messageDataReceived(ReceiverBase.java:242)
        at org.apache.catalina.tribes.transport.nio.NioReplicationTask.drainChannel(NioReplicationTask.java:211)
        at org.apache.catalina.tribes.transport.nio.NioReplicationTask.run(NioReplicationTask.java:102)
        - locked Monitor@4ded5170 at org.apache.catalina.tribes.transport.nio.NioReplicationTask.run(NioReplicationTask.java:n/a)
    T104 is created by T26
        at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:1010)
}}} 

Data race on field org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.view: {{{
    Concurrent read in thread T50 (locks held: {})
 ---->  at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator$CoordinationEvent.<init>(NonBlockingCoordinator.java:781)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.memberAdded(NonBlockingCoordinator.java:516)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.memberAdded(NonBlockingCoordinator.java:509)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberAdded(ChannelInterceptorBase.java:87)
        at org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.memberAdded(TcpFailureDetector.java:141)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberAdded(ChannelInterceptorBase.java:87)
        at org.apache.catalina.tribes.group.interceptors.DomainFilterInterceptor.memberAdded(DomainFilterInterceptor.java:65)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberAdded(ChannelInterceptorBase.java:87)
        at org.apache.catalina.tribes.group.ChannelCoordinator.memberAdded(ChannelCoordinator.java:245)
        at org.apache.catalina.tribes.membership.McastService.memberAdded(McastService.java:461)
        at org.apache.catalina.tribes.membership.McastServiceImpl$2.run(McastServiceImpl.java:397)
    T50 is created by T41
        at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:1010)

    Concurrent write in thread T104 (locks held: {Monitor@4ded5170})
 ---->  at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.handleViewConf(NonBlockingCoordinator.java:371)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.processCoordMessage(NonBlockingCoordinator.java:321)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.messageReceived(NonBlockingCoordinator.java:498)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:81)
        at org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.messageReceived(TcpFailureDetector.java:117)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:81)
        at org.apache.catalina.tribes.group.interceptors.DomainFilterInterceptor.messageReceived(DomainFilterInterceptor.java:48)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:81)
        at org.apache.catalina.tribes.group.ChannelCoordinator.messageReceived(ChannelCoordinator.java:262)
        at org.apache.catalina.tribes.transport.ReceiverBase.messageDataReceived(ReceiverBase.java:242)
        at org.apache.catalina.tribes.transport.nio.NioReplicationTask.drainChannel(NioReplicationTask.java:211)
        at org.apache.catalina.tribes.transport.nio.NioReplicationTask.run(NioReplicationTask.java:102)
        - locked Monitor@4ded5170 at org.apache.catalina.tribes.transport.nio.NioReplicationTask.run(NioReplicationTask.java:n/a)
    T104 is created by T26
        at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:1010)
}}} 

Data race on field org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.view: {{{
    Concurrent read in thread T58 (locks held: {})
 ---->  at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator$CoordinationEvent.<init>(NonBlockingCoordinator.java:781)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.memberAdded(NonBlockingCoordinator.java:516)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.memberAdded(NonBlockingCoordinator.java:509)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberAdded(ChannelInterceptorBase.java:87)
        at org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.memberAdded(TcpFailureDetector.java:141)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberAdded(ChannelInterceptorBase.java:87)
        at org.apache.catalina.tribes.group.interceptors.DomainFilterInterceptor.memberAdded(DomainFilterInterceptor.java:65)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberAdded(ChannelInterceptorBase.java:87)
        at org.apache.catalina.tribes.group.ChannelCoordinator.memberAdded(ChannelCoordinator.java:245)
        at org.apache.catalina.tribes.membership.McastService.memberAdded(McastService.java:461)
        at org.apache.catalina.tribes.membership.McastServiceImpl$2.run(McastServiceImpl.java:397)
    T58 is created by T36
        at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:1010)

    Concurrent write in thread T20 (locks held: {Monitor@3f4a32d4})
 ---->  at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.start(NonBlockingCoordinator.java:454)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInterceptorBase.java:155)
        at org.apache.catalina.tribes.group.GroupChannel.start(GroupChannel.java:425)
        - locked Monitor@3f4a32d4 at org.apache.catalina.tribes.group.GroupChannel.start(GroupChannel.java:n/a)
        at org.apache.catalina.tribes.group.interceptors.TestNonBlockingCoordinator$1.run(TestNonBlockingCoordinator.java:53)
    T20 is created by T1
        at org.apache.catalina.tribes.group.interceptors.TestNonBlockingCoordinator.setUp(TestNonBlockingCoordinator.java:63)
}}} 

Data race on field org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.view: {{{
    Concurrent read in thread T189 (locks held: {})
 ---->  at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator$CoordinationEvent.<init>(NonBlockingCoordinator.java:781)
        at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.memberDisappeared(NonBlockingCoordinator.java:528)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberDisappeared(ChannelInterceptorBase.java:93)
        at org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.memberDisappeared(TcpFailureDetector.java:176)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberDisappeared(ChannelInterceptorBase.java:93)
        at org.apache.catalina.tribes.group.interceptors.DomainFilterInterceptor.memberDisappeared(DomainFilterInterceptor.java:79)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.memberDisappeared(ChannelInterceptorBase.java:93)
        at org.apache.catalina.tribes.group.ChannelCoordinator.memberDisappeared(ChannelCoordinator.java:251)
        at org.apache.catalina.tribes.membership.McastService.memberDisappeared(McastService.java:471)
        at org.apache.catalina.tribes.membership.McastServiceImpl$1.run(McastServiceImpl.java:383)
    T189 is created by T185
        at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:1010)

    Concurrent write in thread T1 (locks held: {Monitor@2b72a0b3, Monitor@16307bd4})
 ---->  at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.stop(NonBlockingCoordinator.java:468)
        - locked Monitor@16307bd4 at org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.stop(NonBlockingCoordinator.java:463)
        at org.apache.catalina.tribes.group.ChannelInterceptorBase.stop(ChannelInterceptorBase.java:171)
        at org.apache.catalina.tribes.group.GroupChannel.stop(GroupChannel.java:444)
        - locked Monitor@2b72a0b3 at org.apache.catalina.tribes.group.GroupChannel.stop(GroupChannel.java:n/a)
        at org.apache.catalina.tribes.group.interceptors.TestNonBlockingCoordinator.tearDown(TestNonBlockingCoordinator.java:127)
        at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
        at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
        at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
        at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:33)
        at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
        at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
        at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
        at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
        at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
        at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
        at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
        at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
        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)
    T1 is the main thread
}}}

Comment 1 Mark Thomas 2015-09-17 09:23:16 UTC

Fixed in trunk and 8.0.x for 8.0.27 onwards.