When a job is retired by the same user's another job, its jobconf file is not
deleted from the log directory of the JobTracker
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Key: MAPREDUCE-2714
URL: https://issues.apache.org/jira/browse/MAPREDUCE-2714
Project: Hadoop Map/Reduce
Issue Type: Bug
Affects Versions: 0.20.2, 0.20.1
Reporter: Liyin Liang
Assignee: Liyin Liang
After MAPREDUCE-130, the job's conf copy will be deleted from the log directory
of the JobTracker when the job is retired. However, it just works if the job is
retired by _RetireJobs_ thread of JobTracker. If a job is retired by the same
user's another job, its conf copy will not be deleted. This kind of retire
happens in _JobTracker::finalizeJob(job)_, when JobTracker maintains more than
_MAX_COMPLETE_USER_JOBS_IN_MEMORY_ jobs information in memory for a given user.
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