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https://issues.apache.org/jira/browse/MAPREDUCE-3000?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13103829#comment-13103829
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Allen Wittenauer commented on MAPREDUCE-3000:
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Why?
Moving a system directory into the middle of the users is going to make
manipulating quotas MUCH harder, especially for high population grids.
It sounds like 203 shipping with /user/mapred is a bug, not this one.
> Move /mapred to /user/mapred for Hadoop 0.20.205
> ------------------------------------------------
>
> Key: MAPREDUCE-3000
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3000
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: build
> Affects Versions: 0.20.205.0
> Environment: Java 6, RHEL 5.6
> Reporter: Eric Yang
> Assignee: Eric Yang
> Fix For: 0.20.205.0
>
>
> /mapred directory should be default to /user/mapred. Owen request this to be
> changed for RPM deployment in 0.20.204. This is a regression in 0.20.205
> that /user/mapred is configured back to /mapred.
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