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https://issues.apache.org/jira/browse/HIVE-2555?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Surówka reassigned HIVE-2555:
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Assignee: Robert Surówka
> Make the hashmap in map-side group by pluggable
> -----------------------------------------------
>
> Key: HIVE-2555
> URL: https://issues.apache.org/jira/browse/HIVE-2555
> Project: Hive
> Issue Type: New Feature
> Reporter: Namit Jain
> Assignee: Robert Surówka
>
> There are a couple of implementations available (other than
> java.util.HashMap) - COLT, TROVE etc. to name a few.
> If the hashmap was pluggable, it would be easy to play around with different
> hash maps and tune performance.
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