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https://issues.apache.org/jira/browse/MAPREDUCE-5420?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Konstantin Shvachko updated MAPREDUCE-5420:
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    Hadoop Flags: Incompatible change,Reviewed  (was: Reviewed)

We can never remove anything from {{*-default.xml}}
Isn't that obvious?

> Remove mapreduce.task.tmp.dir from mapred-default.xml
> -----------------------------------------------------
>
>                 Key: MAPREDUCE-5420
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5420
>             Project: Hadoop Map/Reduce
>          Issue Type: Task
>    Affects Versions: 2.1.0-beta
>            Reporter: Sandy Ryza
>            Assignee: James Carman
>              Labels: newbie
>             Fix For: 2.7.0
>
>         Attachments: MAPREDUCE-5420.patch, MAPREDUCE-5420.patch
>
>
> mapreduce.task.tmp.dir no longer has any effect, so it should no longer be 
> documented in mapred-default.  (There is no YARN equivalent for the property. 
>  It now is just always ./tmp).



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