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From "Devaraj K (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2427) JT should ensure history directory is a directory
Date Wed, 18 May 2011 15:44:49 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13035452#comment-13035452
] 

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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