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https://issues.apache.org/jira/browse/HIVE-19032?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16410539#comment-16410539
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Matt McCline commented on HIVE-19032:
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Includes add vectorization disable to the top of regular GROUP BY Q files, etc.
> Vectorization: Disable GROUP BY aggregations with DISTINCT
> ----------------------------------------------------------
>
> Key: HIVE-19032
> URL: https://issues.apache.org/jira/browse/HIVE-19032
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Affects Versions: 3.0.0
> Reporter: Matt McCline
> Assignee: Matt McCline
> Priority: Critical
> Attachments: HIVE-19032.01.patch
>
>
> Vectorized GROUP BY does not support DISTINCT aggregation functions.
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