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From "Gang Tim Liu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-4146) bug with hive.auto.convert.join.noconditionaltask with outer joins
Date Wed, 20 Mar 2013 14:55:18 GMT

    [ https://issues.apache.org/jira/browse/HIVE-4146?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13607672#comment-13607672
] 

Gang Tim Liu commented on HIVE-4146:
------------------------------------

+1
                
> bug with hive.auto.convert.join.noconditionaltask with outer joins
> ------------------------------------------------------------------
>
>                 Key: HIVE-4146
>                 URL: https://issues.apache.org/jira/browse/HIVE-4146
>             Project: Hive
>          Issue Type: Bug
>          Components: Query Processor
>            Reporter: Namit Jain
>            Assignee: Namit Jain
>         Attachments: hive.4146.1.patch, hive.4146.2.patch, hive.4146.3.patch, hive.4146.4.patch,
hive.4146.5.patch, hive.4146.6.patch
>
>
> Consider the following scenario:
> create table s1 as select * from src where key = 0;
> set hive.auto.convert.join.noconditionaltask=false;                                 
     
> SELECT * FROM s1 src1 LEFT OUTER JOIN s1 src2 ON (src1.key = src2.key AND src2.key >
10);
> gives correct results
> 0	val_0	NULL	NULL
> 0	val_0	NULL	NULL
> 0	val_0	NULL	NULL
> whereas it gives no results with hive.auto.convert.join.noconditionaltask set
> to true

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