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From "Zoltan Haindrich (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-12812) Enable mapred.input.dir.recursive by default to support union with aggregate function
Date Thu, 14 Jun 2018 09:08:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-12812?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zoltan Haindrich updated HIVE-12812:
------------------------------------
    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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