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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3626) map/reduce clients should not access the system dir directly
Date Tue, 24 Jun 2008 06:41:45 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3626?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12607491#action_12607491
] 

Owen O'Malley commented on HADOOP-3626:
---------------------------------------

I'd propose something like:

{code}
~/.staging/$jobid/
{code}

The JobClient would create the job directory and the job tracker would move the job directory
into the system directory and delete it when the job is finished.

> map/reduce clients should not access the system dir directly
> ------------------------------------------------------------
>
>                 Key: HADOOP-3626
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3626
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: mapred
>            Reporter: Owen O'Malley
>
> Map/Reduce's use of the system directory with clients creating directories and files
directly is very insecure. We should change the job client to create a staging directory in
the user's home directory on the same file system as the system directory. 

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