Weiwei Yang created MAPREDUCE-6847:
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Summary: Job history server should release jobs from cache after a
fixed duration
Key: MAPREDUCE-6847
URL: https://issues.apache.org/jira/browse/MAPREDUCE-6847
Project: Hadoop Map/Reduce
Issue Type: Improvement
Components: jobhistoryserver
Reporter: Weiwei Yang
Assignee: Weiwei Yang
We found history server is consuming a lot of memory when there are large jobs
(with more than 100k of tasks in a single job). Currently JHS cache only evicts
entries with size, it's better to add the time expiration as well to reduce
heap usage if job has no one accessing for sometime.
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