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https://issues.apache.org/jira/browse/MAPREDUCE-896?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinod K V updated MAPREDUCE-896:
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Affects Version/s: 0.21.0
Fix Version/s: 0.21.0
With LinuxTaskController in use, we have seen instances of this on some
clusters. This effectively rendered some of the TTs useless for lack of disk
space. Need in this 0.21.
> 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: 0.21.0
>
>
> 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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