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https://issues.apache.org/jira/browse/HADOOP-11402?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Varun Saxena updated HADOOP-11402:
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Summary: Use guava cache to implement negative user-to-group cache (was:
Use guava cache to implement negative user-to-group cache entries)
> Use guava cache to implement negative user-to-group cache
> ---------------------------------------------------------
>
> Key: HADOOP-11402
> URL: https://issues.apache.org/jira/browse/HADOOP-11402
> Project: Hadoop Common
> Issue Type: Improvement
> Affects Versions: 2.6.0
> Reporter: Colin Patrick McCabe
> Assignee: Varun Saxena
> Attachments: HADOOP-11402.001.patch
>
>
> Negative user-to-group cache entries are never cleared for
> never-again-accessed users. We should have a background thread that runs
> very infrequently and removes these expired entries.
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