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https://issues.apache.org/jira/browse/HIVE-22760?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Slim Bouguerra updated HIVE-22760:
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Attachment: HIVE-22760.3.patch
> Add Clock caching eviction based strategy
> -----------------------------------------
>
> Key: HIVE-22760
> URL: https://issues.apache.org/jira/browse/HIVE-22760
> Project: Hive
> Issue Type: New Feature
> Components: llap
> Reporter: Slim Bouguerra
> Assignee: Slim Bouguerra
> Priority: Major
> Attachments: HIVE-22760.2.patch, HIVE-22760.3.patch,
> HIVE-22760.3.patch, HIVE-22760.patch, HIVE-22760.patch
>
>
> LRFU is the current default right now.
> The main issue with such Strategy is that it has a very high memory overhead,
> in addition to that, most of the accounting has to happen under locks thus
> can be source of contentions.
> Add Simpler policy like clock, can help with both issues.
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