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https://issues.apache.org/jira/browse/HIVE-3765?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Namit Jain reassigned HIVE-3765:
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Assignee: Gang Tim Liu
> Bucket map join optimization not applied to left semi join
> ----------------------------------------------------------
>
> Key: HIVE-3765
> URL: https://issues.apache.org/jira/browse/HIVE-3765
> Project: Hive
> Issue Type: Bug
> Affects Versions: 0.11
> Reporter: Kevin Wilfong
> Assignee: Gang Tim Liu
>
> When all the hints and settings are present to use the bucket map join
> optimization, it will not get applied if the join is a left semi join. It
> works for left outer joins, so it seems it should work for left semi joins.
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