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https://issues.apache.org/jira/browse/HADOOP-2174?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arun C Murthy updated HADOOP-2174:
----------------------------------
Resolution: Fixed
Status: Resolved (was: Patch Available)
I just committed this. Thanks, Chris!
> distcp throws a NullPointerException in the close() method of mapper class
> due to the Reporter becoming invalid
> ---------------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-2174
> URL: https://issues.apache.org/jira/browse/HADOOP-2174
> Project: Hadoop
> Issue Type: Bug
> Components: util
> Affects Versions: 0.15.0
> Reporter: Riccardo
> Assignee: Chris Douglas
> Priority: Critical
> Fix For: 0.15.1
>
> Attachments: 2174-1.patch
>
>
> distcp occasionally throws a NullPointerException in the close() method of
> the mapper class, when the copy of the Reporter handle becomes invalid:
> java.lang.NullPointerException
> at
> org.apache.hadoop.util.CopyFiles$FSCopyFilesMapper.updateStatus(CopyFiles.java:242)
> at
> org.apache.hadoop.util.CopyFiles$FSCopyFilesMapper.close(CopyFiles.java:402)
> at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:53)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:192)
> at
> org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:1760)
> This can easily be fixed by checking whether the Reporter is null before
> updating the status. Also, the status could be updated once the invocation of
> copy(srcstat, dstpath, out, reporter); returns on line 373 of CopyFiles.java.
> Marking this as critical for a 0.15.1 release as Chris requested.
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