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https://issues.apache.org/jira/browse/HIVE-13768?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aihua Xu resolved HIVE-13768.
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Resolution: Not A Problem
Assignee: (was: Aihua Xu)
Seems I misunderstood the problem. It assumes that table is sorted by group by
key. So it works as expected.
> Distinct functions don't work properly after hive.map.groupby.sorted is
> default to true
> ---------------------------------------------------------------------------------------
>
> Key: HIVE-13768
> URL: https://issues.apache.org/jira/browse/HIVE-13768
> Project: Hive
> Issue Type: Bug
> Components: Query Planning
> Affects Versions: 2.0.0
> Reporter: Aihua Xu
>
> HIVE-12325 changes hive.map.groupby.sorted default value to true. The
> following {{select count(distinct) from t1;}} will return incorrect result
> now. In the older version, if you set hive.map.groupby.sorted to true, seems
> it will also return incorrect result.
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