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https://issues.apache.org/jira/browse/MAPREDUCE-6847?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Weiwei Yang resolved MAPREDUCE-6847.
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Resolution: Won't Fix
> 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
> Attachments: MAPREDUCE-6847.01.patch
>
>
> 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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