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Date: Sat, 5 Jan 2013 22:04:13 +0000 (UTC)
From: "Lars Hofhansl (JIRA)" <jira@apache.org>
To: dev@hbase.apache.org
Message-ID: <JIRA.12625799.1357175684380.86871.1357423453210@arcas>
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Subject: [jira] [Reopened] (HBASE-7483) TestHRegionOnCluster and
 TestSplitTransactionOnCluster are racy with HBaseAdmin.move()
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     [ https://issues.apache.org/jira/browse/HBASE-7483?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lars Hofhansl reopened HBASE-7483:
----------------------------------


Meh. This is still happening. I can't explain how, though. This exception happens when the assignment manager does not know about this region.
My previous patch checks whether the assignment manager does know this region, so it seems impossible now.
                
> TestHRegionOnCluster and TestSplitTransactionOnCluster are racy with HBaseAdmin.move()
> --------------------------------------------------------------------------------------
>
>                 Key: HBASE-7483
>                 URL: https://issues.apache.org/jira/browse/HBASE-7483
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Lars Hofhansl
>            Assignee: Lars Hofhansl
>             Fix For: 0.94.4
>
>         Attachments: 7483.txt, 7483-v2.txt, 7483-v3.txt
>
>
> Seen in TestHRegionOnCluster and TestSplitTransactionOnCluster.
> Stack in both cases it:
> {code}
> java.lang.reflect.UndeclaredThrowableException
> 	at $Proxy20.move(Unknown Source)
> 	at org.apache.hadoop.hbase.client.HBaseAdmin.move(HBaseAdmin.java:1426)
> 	at org.apache.hadoop.hbase.regionserver.TestHRegionOnCluster.testDataCorrectnessReplayingRecoveredEdits(TestHRegionOnCluster.java:94)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:597)
> 	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
> 	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
> 	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
> 	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
> 	at org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:62)
> Caused by: org.apache.hadoop.ipc.RemoteException: org.apache.hadoop.hbase.UnknownRegionException: cc372cfe78f796e467f6d383da1fecba
> 	at org.apache.hadoop.hbase.master.HMaster.move(HMaster.java:1141)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:597)
> 	at org.apache.hadoop.hbase.ipc.WritableRpcEngine$Server.call(WritableRpcEngine.java:364)
> 	at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1426)
> 	at org.apache.hadoop.hbase.ipc.HBaseClient.call(HBaseClient.java:1021)
> 	at org.apache.hadoop.hbase.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:150)
> 	... 12 more
> {code}

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