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https://issues.apache.org/jira/browse/HIVE-14160?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dmitry Tolpeko updated HIVE-14160:
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Component/s: (was: hpl/sql)
> Reduce-task costs a long time to finish on the condition that the certain sql
> "select a,distinct(b) group by a" has been executed on the data which has
> skew distribution
> -------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HIVE-14160
> URL: https://issues.apache.org/jira/browse/HIVE-14160
> Project: Hive
> Issue Type: Improvement
> Affects Versions: 1.1.0
> Reporter: marymwu
>
> Reduce-task costs a long time to finish on the condition that the certain sql
> "select a,distinct(b) group by a" has been executed on the data which has
> skew distribution
> data scale: 64G
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