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From "Edward Capriolo (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-4584) CombineHiveInputFormat queries hang when table is empty and aggregation function is used
Date Tue, 03 Sep 2013 01:21:52 GMT

    [ https://issues.apache.org/jira/browse/HIVE-4584?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13756297#comment-13756297
] 

Edward Capriolo commented on HIVE-4584:
---------------------------------------

I just tried on trunk in local mode and it worked. Give me a day to confirm if the functionality
is different in distributed/ non local mode.
                
> CombineHiveInputFormat queries hang when table is empty and aggregation function is used
> ----------------------------------------------------------------------------------------
>
>                 Key: HIVE-4584
>                 URL: https://issues.apache.org/jira/browse/HIVE-4584
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Edward Capriolo
>            Priority: Blocker
>
> Running hadoop 0.20.2. Hive 0.10. The new default is combined input format. When you
aggregate and empty table, or a table not empty with an empty partition the query produces
0 maps and 1 reduce and hangs forever. 

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