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https://issues.apache.org/jira/browse/MAPREDUCE-4737?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13637716#comment-13637716
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Arun C Murthy commented on MAPREDUCE-4737:
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[~daijy] I started looking closely at this and see that we need a lot more work
to get this right (lots of existing exception handling for o.a.h.mapred is
broken too). Do you mind if I take this over, fix related issues and add tests
etc.? Thanks!
> Hadoop does not close output file / does not call Mapper.cleanup if
> exception in map
> -------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-4737
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4737
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 1-win
> Reporter: Daniel Dai
> Assignee: Daniel Dai
> Attachments: HADOOP-23-2.patch, HADOOP-8904-1.patch
>
>
> Find this in Pig unit test TestStore under Windows. There are dangling files
> because map does not close the file when exception happens in map(). In
> Windows, Hadoop will not remove a file if it is not closed. This happens in
> reduce() as well.
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