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https://issues.apache.org/jira/browse/HIVE-12812?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zoltan Haindrich updated HIVE-12812:
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Assignee: (was: Chaoyu Tang)
Status: Open (was: Patch Available)
the comment have re-queued it for ptest; I'm unassigning the ticket since it's
>1 year since the last change.
which version of Hive are you using? mapreduce is not really recommended
nowadays...and I don't think there will be another 1.x release...
> Enable mapred.input.dir.recursive by default to support union with aggregate
> function
> -------------------------------------------------------------------------------------
>
> Key: HIVE-12812
> URL: https://issues.apache.org/jira/browse/HIVE-12812
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Affects Versions: 2.1.0, 1.2.1
> Reporter: Chaoyu Tang
> Priority: Major
> Attachments: HIVE-12812.patch, HIVE-12812.patch, HIVE-12812.patch
>
>
> When union remove optimization is enabled, union query with aggregate
> function writes its subquery intermediate results to subdirs which needs
> mapred.input.dir.recursive to be enabled in order to be fetched. This
> property is not defined by default in Hive and often ignored by user, which
> causes the query failure and is hard to be debugged.
> So we need set mapred.input.dir.recursive to true whenever union remove
> optimization is enabled.
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