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https://issues.apache.org/jira/browse/TAJO-1830?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jinho Kim resolved TAJO-1830.
-----------------------------
Resolution: Fixed
committed it
Thanks
> Fix race condition in HdfsServiceTracker
> ----------------------------------------
>
> Key: TAJO-1830
> URL: https://issues.apache.org/jira/browse/TAJO-1830
> Project: Tajo
> Issue Type: Bug
> Components: TajoMaster, Unit Test
> Affects Versions: 0.10.0
> Reporter: Jinho Kim
> Assignee: Jinho Kim
> Fix For: 0.11.0, 0.12.0
>
>
> If HdfsServiceTracker reads active-master file before the file not closed,
> active-master file is empty.
> {format}
> testAutoFailOver(org.apache.tajo.ha.TestHAServiceHDFSImpl) Time elapsed:
> 4.668 sec <<< ERROR!
> org.apache.tajo.exception.TajoRuntimeException:
> org.apache.tajo.client.v2.exception.ClientConnectionException:
> java.io.EOFException
> at
> org.apache.tajo.client.SessionConnection.getTajoMasterConnection(SessionConnection.java:141)
> at
> org.apache.tajo.client.SessionConnection.<init>(SessionConnection.java:113)
> at org.apache.tajo.client.TajoClientImpl.<init>(TajoClientImpl.java:62)
> at org.apache.tajo.client.TajoClientImpl.<init>(TajoClientImpl.java:86)
> at org.apache.tajo.client.TajoClientImpl.<init>(TajoClientImpl.java:82)
> at
> org.apache.tajo.ha.TestHAServiceHDFSImpl.verifyDataBaseAndTable(TestHAServiceHDFSImpl.java:152)
> at
> org.apache.tajo.ha.TestHAServiceHDFSImpl.testAutoFailOver(TestHAServiceHDFSImpl.java:82)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:606)
> 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.InvokeMethod.evaluate(InvokeMethod.java:17)
> at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
> 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$2.evaluate(ParentRunner.java:229)
> at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
> at
> org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:264)
> at
> org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:153)
> at
> org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:124)
> at
> org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:200)
> at
> org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:153)
> at
> org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:103)
> Caused by: org.apache.tajo.client.v2.exception.ClientConnectionException:
> java.io.EOFException
> ... 30 more
> Caused by: org.apache.tajo.service.ServiceTrackerException:
> java.io.EOFException
> at
> org.apache.tajo.ha.HdfsServiceTracker.getAddressElements(HdfsServiceTracker.java:508)
> at
> org.apache.tajo.ha.HdfsServiceTracker.getClientServiceAddress(HdfsServiceTracker.java:409)
> at
> org.apache.tajo.client.SessionConnection.getTajoMasterAddr(SessionConnection.java:361)
> at
> org.apache.tajo.client.SessionConnection.getTajoMasterConnection(SessionConnection.java:130)
> ... 29 more
> Caused by: java.io.EOFException
> at java.io.DataInputStream.readUnsignedShort(DataInputStream.java:340)
> at java.io.DataInputStream.readUTF(DataInputStream.java:589)
> at java.io.DataInputStream.readUTF(DataInputStream.java:564)
> at
> org.apache.tajo.ha.HdfsServiceTracker.getAddressElements(HdfsServiceTracker.java:498)
> ... 32 more
> at
> org.apache.tajo.ha.HdfsServiceTracker.createMasterFile(HdfsServiceTracker.java:249)
> at
> org.apache.tajo.ha.HdfsServiceTracker.register(HdfsServiceTracker.java:155)
> at
> org.apache.tajo.ha.HdfsServiceTracker$PingChecker.run(HdfsServiceTracker.java:374)
> at java.lang.Thread.run(Thread.java:745)
> {format}
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