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From "Mafish (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-1202) "Unknown exception : null" while join
Date Mon, 01 Mar 2010 05:29:05 GMT

    [ https://issues.apache.org/jira/browse/HIVE-1202?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12839552#action_12839552
] 

Mafish commented on HIVE-1202:
------------------------------

Which trunk are you using?
I'm using release 0.4.1, which is checkoed out from 
http://svn.apache.org/repos/asf/hadoop/hive/branches/branch-0.4

$ svn info
Path: .
URL: http://svn.apache.org/repos/asf/hadoop/hive/branches/branch-0.4
Repository Root: http://svn.apache.org/repos/asf
Repository UUID: 13f79535-47bb-0310-9956-ffa450edef68
Revision: 916543
Node Kind: directory
Schedule: normal
Last Changed Author: nzhang
Last Changed Rev: 912061
Last Changed Date: 2010-02-20 09:44:44 +0800 (Sat, 20 Feb 2010)



> "Unknown exception : null" while join
> -------------------------------------
>
>                 Key: HIVE-1202
>                 URL: https://issues.apache.org/jira/browse/HIVE-1202
>             Project: Hadoop Hive
>          Issue Type: Bug
>          Components: Query Processor
>    Affects Versions: 0.4.1
>         Environment: hive-0.4.1
> hadoop 0.19.1
>            Reporter: Mafish
>             Fix For: 0.4.1
>
>         Attachments: HIVE-1202.branch-0.4.1.patch
>
>
> Hive throws "Unknown exception : null" with query:
> select * from 
> (
>   select name from classes 
> ) a
>   join classes b
> where a.name > b.number
> After tracing the code, I found this bug will occur with following
> conditions:
> 1. It is join operation.
> 2. At least one of the source of join is physical table (right side in
> above case).
> 3. With where condition and condition(s) of where clause must include
> columns from both side of join (a.name and b.number in case)

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