Stale user directories left on TTs after MAPREDUCE-856
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Key: MAPREDUCE-1019
URL: https://issues.apache.org/jira/browse/MAPREDUCE-1019
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: tasktracker
Reporter: Vinod K V
Fix For: 0.21.0
MAPREUCE-856 changed the directory structure of job files on the TT. As part of
this, it introduced user directories under taskTracker subdirectory which
contains private files of a user. The user directories are created on the TT
when the user's first task is assigned to this TT. But these user-directories
are never cleaned up from the TT, even when no task of this user is running on
this TT. This essentially leaves empty user directories hanging around on the
TT, whose number may increase over time.
This was originally intended to be fixed in MAPREDUCE-856, but could not be
done because increasing complexity already stretched that issue.
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