Users can set non-writable permissions on temporary files for TT and can abuse
disk usage.
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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
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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