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Posted to dev@hive.apache.org by "He Yongqiang (JIRA)" <ji...@apache.org> on 2011/04/21 02:07:06 UTC
[jira] [Updated] (HIVE-1745) choose hive.groupby.skewindata
intelligently
[ https://issues.apache.org/jira/browse/HIVE-1745?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
He Yongqiang updated HIVE-1745:
-------------------------------
Assignee: (was: He Yongqiang)
> choose hive.groupby.skewindata intelligently
> --------------------------------------------
>
> Key: HIVE-1745
> URL: https://issues.apache.org/jira/browse/HIVE-1745
> Project: Hive
> Issue Type: Improvement
> Components: Query Processor
> Reporter: Namit Jain
>
> Currently, it is set to false always - it leads to problems when we are issuing select distinct from very large tables with a very large number of distincts.
> We need to tune it intelligently
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