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From "Namit Jain (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HIVE-384) problem in union if the first subquery is a map-only job
Date Tue, 07 Apr 2009 01:21:13 GMT

     [ https://issues.apache.org/jira/browse/HIVE-384?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Namit Jain updated HIVE-384:
----------------------------

    Attachment: hive.384.6.patch

> problem in union if the first subquery is a map-only job
> --------------------------------------------------------
>
>                 Key: HIVE-384
>                 URL: https://issues.apache.org/jira/browse/HIVE-384
>             Project: Hadoop Hive
>          Issue Type: Bug
>            Reporter: Namit Jain
>            Assignee: Namit Jain
>            Priority: Blocker
>         Attachments: hive.384.1.patch, hive.384.2.patch, hive.384.3.patch, hive.384.4.patch,
hive.384.5.patch, hive.384.6.patch
>
>
> Union needs special handling.
> explain 
>   select unionsrc.key, count(1) FROM (select s2.key as key, s2.value as value from src1
s2
>                                         UNION  ALL  
>                                       select 'tst1' as key, cast(count(1) as string)
as value from src s1) 
>   unionsrc group by unionsrc.key;
> results in a null pointer exception

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