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https://issues.apache.org/jira/browse/HBASE-13133?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14342644#comment-14342644
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zhangduo commented on HBASE-13133:
----------------------------------
This patch fix the NullPointer, and testOrphanTaskAcquisition does not fail any
more.
But testGetPreviousRecoveryMode is still failing with
{noformat}
java.lang.AssertionError: Mode4=LOG_SPLITTING
at org.junit.Assert.fail(Assert.java:88)
at org.junit.Assert.assertTrue(Assert.java:41)
at
org.apache.hadoop.hbase.master.TestSplitLogManager.testGetPreviousRecoveryMode(TestSplitLogManager.java:662)
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$1.runReflectiveCall(FrameworkMethod.java:47)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at
org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:74)
{noformat}
> NPE when running TestSplitLogManager
> ------------------------------------
>
> Key: HBASE-13133
> URL: https://issues.apache.org/jira/browse/HBASE-13133
> Project: HBase
> Issue Type: Bug
> Reporter: zhangduo
> Assignee: Andrey Stepachev
> Attachments: HBASE-13133.patch
>
>
> https://builds.apache.org/job/HBase-TRUNK/6187/testReport/junit/org.apache.hadoop.hbase.master/TestSplitLogManager/testOrphanTaskAcquisition/
> {noformat}
> 2015-03-01 01:34:58,902 INFO [Thread-23] master.TestSplitLogManager(298):
> TestOrphanTaskAcquisition
> 2015-03-01 01:34:58,904 DEBUG [Thread-23]
> coordination.ZKSplitLogManagerCoordination(870): Distributed log replay=true
> 2015-03-01 01:34:58,907 INFO [Thread-23]
> coordination.ZKSplitLogManagerCoordination(594): found orphan task
> orphan%2Ftest%2Fslash
> 2015-03-01 01:34:58,913 INFO [Thread-23]
> coordination.ZKSplitLogManagerCoordination(598): Found 1 orphan tasks and 0
> rescan nodes
> 2015-03-01 01:34:58,913 ERROR [main-EventThread]
> zookeeper.ClientCnxn$EventThread(613): Caught unexpected throwable
> java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.coordination.ZKSplitLogManagerCoordination.findOrCreateOrphanTask(ZKSplitLogManagerCoordination.java:546)
> at
> org.apache.hadoop.hbase.coordination.ZKSplitLogManagerCoordination.heartbeat(ZKSplitLogManagerCoordination.java:556)
> at
> org.apache.hadoop.hbase.coordination.ZKSplitLogManagerCoordination.getDataSetWatchSuccess(ZKSplitLogManagerCoordination.java:467)
> at
> org.apache.hadoop.hbase.coordination.ZKSplitLogManagerCoordination.access$700(ZKSplitLogManagerCoordination.java:74)
> at
> org.apache.hadoop.hbase.coordination.ZKSplitLogManagerCoordination$GetDataAsyncCallback.processResult(ZKSplitLogManagerCoordination.java:1020)
> at
> org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:561)
> at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:498)
> {noformat}
> I got this NPE almost every time when running TestSplitLogManager locally. I
> am not sure whether it is the root cause of test failing, but seems related.
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