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https://issues.apache.org/jira/browse/MAPREDUCE-2427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13035452#comment-13035452
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Devaraj K commented on MAPREDUCE-2427:
--------------------------------------
When initializing job history throwing IOException if 'history' is present and
it is not a directory.
> JT should ensure history directory is a directory
> -------------------------------------------------
>
> Key: MAPREDUCE-2427
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2427
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: jobtracker
> Affects Versions: 0.20.2
> Reporter: E. Sammer
> Assignee: Devaraj K
> Fix For: 0.20.4, 0.23.0
>
> Attachments: MAPREDUCE-2427.0.20.patch, MAPREDUCE-2427.patch
>
>
> If the JT history directory doesn't exist or isn't a directory retired job
> files are renamed to a file called 'history' and eventually start overwriting
> each other. The JT should ensure 'history' exists and is a directory before
> performing the move.
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