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https://issues.apache.org/jira/browse/HADOOP-2892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12572638#action_12572638
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Olga Natkovich commented on HADOOP-2892:
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In my project, Pig, some queries cause a chain of M-R jobs to be ran with only 
the final results being meaningful. It would be nice if we could write those 
intermediate results into the location that is managed by hadoop and is 
automatically removed upon the chain completion.

This is just one of the examples. In general, an application might need to 
generate temp data for a variety of reasons and providing a way to 
automatically reclaim the space when the data is no longer needed is good for 
users as well as the system.

> providing temp space management for applications
> ------------------------------------------------
>
>                 Key: HADOOP-2892
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2892
>             Project: Hadoop Core
>          Issue Type: New Feature
>            Reporter: Olga Natkovich
>
> It would be greate if hadoop can provide temp space for applications to use. 
> This would be useful for any applications that chain M-R jobs, perform 
> checkpoint and need to store some application specific temp results. 
> DeleteOnExit for files and directories would be ideal.

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