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https://issues.apache.org/jira/browse/MAPREDUCE-2219?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon reassigned MAPREDUCE-2219:
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Assignee: Todd Lipcon
> JT should not try to remove mapred.system.dir during startup
> ------------------------------------------------------------
>
> Key: MAPREDUCE-2219
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2219
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: jobtracker
> Affects Versions: 0.22.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Attachments: mapreduce-2219.txt
>
>
> During startup, the JT tries to clean up mapred.system.dir by recursively
> removing it and then recreating it. This requires that mapred.system.dir is
> inside a directory owned by the mapred user. For example, if set to
> /system/mapred then /system must be owned by the mapred account. This isn't
> documented properly and also seems unnecessary. Instead we can remove the
> *contents* of mapred.system.dir instead of the directory itself.
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