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Date: Fri, 6 Nov 2009 05:54:32 +0000 (UTC)
From: "Ravi Gummadi (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
Subject: [jira] Assigned: (MAPREDUCE-896) Users can set non-writable
 permissions on temporary files for TT and can abuse disk usage.
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     [ https://issues.apache.org/jira/browse/MAPREDUCE-896?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ravi Gummadi reassigned MAPREDUCE-896:
--------------------------------------

    Assignee: Ravi Gummadi

> Users can set non-writable permissions on temporary files for TT and can abuse disk usage.
> ------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-896
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-896
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: tasktracker
>            Reporter: Vinod K V
>            Assignee: Ravi Gummadi
>
> As of now, irrespective of the TaskController in use, TT itself does a full delete on local files created by itself or job tasks. This step, depending upon TT's umask and the permissions set by files by the user, for e.g in job-work/task-work or child.tmp directories, may or may not go through successful completion fully. Thus is left an opportunity for abusing disk space usage either accidentally or intentionally by TT/users.

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