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https://issues.apache.org/jira/browse/MAPREDUCE-896?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12796735#action_12796735
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Hudson commented on MAPREDUCE-896:
----------------------------------
Integrated in Hadoop-Mapreduce-trunk #196 (See
[http://hudson.zones.apache.org/hudson/job/Hadoop-Mapreduce-trunk/196/])
> 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
> Affects Versions: 0.21.0
> Reporter: Vinod K V
> Assignee: Ravi Gummadi
> Fix For: 0.22.0
>
> Attachments: MR-896.patch, MR-896.v1.patch, MR-896.v2.patch,
> MR-896.v3.patch, MR-896.v4.patch, MR-896.v5.patch, MR-896.v6.patch,
> MR-896.v7.patch, MR-896.v8.patch, y896.v1.patch, y896.v2.1.fix.patch,
> y896.v2.1.fix.v1.patch, y896.v2.1.fix.v2.patch, y896.v2.1.patch, y896.v2.patch
>
>
> 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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