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From "Vinod K V (JIRA)" <j...@apache.org>
Subject [jira] Created: (MAPREDUCE-1019) Stale user directories left on TTs after MAPREDUCE-856
Date Tue, 22 Sep 2009 07:10:16 GMT
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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