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https://issues.apache.org/jira/browse/HIVE-25780?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zoltan Haindrich reassigned HIVE-25780:
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> DistinctExpansion creates more than 64 grouping sets II
> -------------------------------------------------------
>
> Key: HIVE-25780
> URL: https://issues.apache.org/jira/browse/HIVE-25780
> Project: Hive
> Issue Type: Bug
> Reporter: Zoltan Haindrich
> Assignee: Zoltan Haindrich
> Priority: Major
>
> HIVE-25498 have fixed this when there are only count(distinct x) queries.
> however after the rewrite happens grouping sets are used to handle group by
> columns as well
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