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https://issues.apache.org/jira/browse/MAHOUT-946?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13202848#comment-13202848
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Sean Owen commented on MAHOUT-946:
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I like it all, except I'm not sure about the cleanup methods. I think as you
say the job can manage that if it needs to clean up; at least, that's how it
works now.
> Map-reduce job status often left unchecked
> ------------------------------------------
>
> Key: MAHOUT-946
> URL: https://issues.apache.org/jira/browse/MAHOUT-946
> Project: Mahout
> Issue Type: Bug
> Affects Versions: 0.6
> Reporter: tom pierce
> Attachments: MAHOUT-946.patch, MAHOUT-946.patch
>
>
> I've run into a few places in Mahout where mapreduce jobs can fail and their
> status won't be checked, so processing will continue on. This sometimes
> obscures the root problem. I've tracked down a bunch of places where this
> problem exists, and tried to fix the code to do something reasonable (return
> -1 status code, throw exception, etc.) when jobs fail.
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