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https://issues.apache.org/jira/browse/GEODE-538?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15582559#comment-15582559
 ] 

Kenneth Howe commented on GEODE-538:
------------------------------------

Queries on a persistent colocated PR can also cause this problem.

> PersistentColocatedPartitionedRegionDUnitTest.testRebalanceWithOfflineChildRegion
>  failed if do not wait on getResult
> --------------------------------------------------------------------------------------------------------------------
>
>                 Key: GEODE-538
>                 URL: https://issues.apache.org/jira/browse/GEODE-538
>             Project: Geode
>          Issue Type: Bug
>          Components: persistence
>            Reporter: Jinmei Liao
>            Assignee: Kenneth Howe
>         Attachments: logs.zip
>
>
> While attempting to work on GEODE-506, I commented out line s1538-1540 like 
> the following
>     async1 = vm1.invokeAsync(createChildPR);
>     async0 = vm0.invokeAsync(createChildPR);
>     AsyncInvocation async2 = vm2.invokeAsync(createChildPR);
>     //async0.getResult(MAX_WAIT);  -- line 1538
>     //async1.getResult(MAX_WAIT);  -- line 1539
>     //async2.getResult(MAX_WAIT);  -- line 1540
> This will reproduce the error similar to the one reported in GEODE506, but it 
> failed on checking the data on parent region instead of the child region. Log 
> files attached.
> dunit.RMIException: While invoking 
> com.gemstone.gemfire.internal.cache.partitioned.PersistentPartitionedRegionTestBase$5.run
>  in VM 0 running on Host localhost with 4 VMs
>       at dunit.VM.invoke(VM.java:368)
>       at dunit.VM.invoke(VM.java:312)
>       at dunit.VM.invoke(VM.java:266)
>       at 
> com.gemstone.gemfire.internal.cache.partitioned.PersistentPartitionedRegionTestBase.checkData(PersistentPartitionedRegionTestBase.java:182)
>       at 
> com.gemstone.gemfire.internal.cache.partitioned.PersistentPartitionedRegionTestBase.checkData(PersistentPartitionedRegionTestBase.java:165)
>       at 
> com.gemstone.gemfire.internal.cache.partitioned.PersistentColocatedPartitionedRegionDUnitTest.rebalanceWithOfflineChildRegion(PersistentColocatedPartitionedRegionDUnitTest.java:1543)
>       at 
> com.gemstone.gemfire.internal.cache.partitioned.PersistentColocatedPartitionedRegionDUnitTest.testRebalanceWithOfflineChildRegion(PersistentColocatedPartitionedRegionDUnitTest.java:1223)
>       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:497)
>       at junit.framework.TestCase.runTest(TestCase.java:176)
>       at junit.framework.TestCase.runBare(TestCase.java:141)
>       at junit.framework.TestResult$1.protect(TestResult.java:122)
>       at junit.framework.TestResult.runProtected(TestResult.java:142)
>       at junit.framework.TestResult.run(TestResult.java:125)
>       at junit.framework.TestCase.run(TestCase.java:129)
>       at junit.framework.TestSuite.runTest(TestSuite.java:252)
>       at junit.framework.TestSuite.run(TestSuite.java:247)
>       at 
> org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:86)
>       at 
> org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
>       at 
> org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
>       at 
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
>       at 
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
>       at 
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
>       at 
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
> Caused by: junit.framework.AssertionFailedError: For key 1 expected:<a> but 
> was:<null>
>       at junit.framework.Assert.fail(Assert.java:57)
>       at junit.framework.Assert.failNotEquals(Assert.java:329)
>       at junit.framework.Assert.assertEquals(Assert.java:78)
>       at junit.framework.TestCase.assertEquals(TestCase.java:244)
>       at 
> com.gemstone.gemfire.internal.cache.partitioned.PersistentPartitionedRegionTestBase$5.run(PersistentPartitionedRegionTestBase.java:177)
>       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:497)
>       at hydra.MethExecutor.executeObject(MethExecutor.java:267)
>       at 
> dunit.standalone.RemoteDUnitVM.executeMethodOnObject(RemoteDUnitVM.java:77)
>       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:497)
>       at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:323)
>       at sun.rmi.transport.Transport$1.run(Transport.java:200)
>       at sun.rmi.transport.Transport$1.run(Transport.java:197)
>       at java.security.AccessController.doPrivileged(Native Method)
>       at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
>       at 
> sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568)
>       at 
> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826)
>       at 
> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$256(TCPTransport.java:683)
>       at java.security.AccessController.doPrivileged(Native Method)
>       at 
> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682)
>       at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>       at java.lang.Thread.run(Thread.java:745)



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