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From "Robert Joseph Evans (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (MAPREDUCE-4940) division by zero in getLocalPathForWrite()
Date Mon, 14 Jan 2013 15:06:14 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4940?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Robert Joseph Evans resolved MAPREDUCE-4940.
--------------------------------------------

    Resolution: Duplicate
    
> division by zero in getLocalPathForWrite()
> ------------------------------------------
>
>                 Key: MAPREDUCE-4940
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4940
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>            Reporter: Ted Yu
>
> see https://builds.apache.org/job/HBase-TRUNK-on-Hadoop-2.0.0/345/testReport/org.apache.hadoop.hbase.mapreduce/TestImportExport/testSimpleCase/
> {code}
> 2013-01-12 11:53:52,809 WARN  [AsyncDispatcher event handler] resourcemanager.RMAuditLogger(255):
USER=jenkins	OPERATION=Application Finished - Failed	TARGET=RMAppManager	RESULT=FAILURE	DESCRIPTION=App
failed with state: FAILED	PERMISSIONS=Application application_1357991604658_0002 failed 1
times due to AM Container for appattempt_1357991604658_0002_000001 exited with  exitCode:
-1000 due to: java.lang.ArithmeticException: / by zero
> 	at org.apache.hadoop.fs.LocalDirAllocator$AllocatorPerContext.getLocalPathForWrite(LocalDirAllocator.java:368)
> 	at org.apache.hadoop.fs.LocalDirAllocator.getLocalPathForWrite(LocalDirAllocator.java:150)
> 	at org.apache.hadoop.fs.LocalDirAllocator.getLocalPathForWrite(LocalDirAllocator.java:131)
> 	at org.apache.hadoop.fs.LocalDirAllocator.getLocalPathForWrite(LocalDirAllocator.java:115)
> 	at org.apache.hadoop.yarn.server.nodemanager.LocalDirsHandlerService.getLocalPathForWrite(LocalDirsHandlerService.java:279)
> 	at org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService$LocalizerRunner.run(ResourceLocalizationService.java:851)
> .Failing this attempt.. Failing the application.	APPID=application_1357991604658_0002
> {code}
> Here is related code:
> {code}
>         // Keep rolling the wheel till we get a valid path
>         Random r = new java.util.Random();
>         while (numDirsSearched < numDirs && returnPath == null) {
>           long randomPosition = Math.abs(r.nextLong()) % totalAvailable;
> {code}
> My guess is that totalAvailable was 0, meaning dirDF was empty.

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