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https://issues.apache.org/jira/browse/HIVE-10901?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ashutosh Chauhan updated HIVE-10901:
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Attachment: HIVE-10901.patch
Not ready for review yet. Running through existing tests to check if there are
issues.
> Optimize mutli column distinct queries
> ----------------------------------------
>
> Key: HIVE-10901
> URL: https://issues.apache.org/jira/browse/HIVE-10901
> Project: Hive
> Issue Type: New Feature
> Components: CBO, Logical Optimizer
> Affects Versions: 1.2.0
> Reporter: Mostafa Mokhtar
> Assignee: Ashutosh Chauhan
> Attachments: HIVE-10901.patch
>
>
> HIVE-10568 is useful only when there is a distinct on one column. It can be
> expanded for multiple column cases too.
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