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https://issues.apache.org/jira/browse/HIVE-2416?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ted Xu updated HIVE-2416:
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Attachment: multi_distinct_skew.patch
> Multiple distinct function to support hive.groupby.skewindata optimization
> --------------------------------------------------------------------------
>
> Key: HIVE-2416
> URL: https://issues.apache.org/jira/browse/HIVE-2416
> Project: Hive
> Issue Type: Improvement
> Reporter: Ted Xu
> Assignee: Ted Xu
> Attachments: multi_distinct_skew.patch
>
>
> Currently when multiple distinct function is used, hive.groupby.skewindata
> optimization parameter shall be set false, or else an exception is raised:
> {code}
> Error in semantic analysis: DISTINCT on different columns not supported with
> skew in data
> {code}
> Skew groupby should support multiple distinct function
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