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From "Prasanth J (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-8888) Mapjoin with LateralViewJoin generates wrong plan in Tez
Date Tue, 02 Dec 2014 19:08:13 GMT

    [ https://issues.apache.org/jira/browse/HIVE-8888?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14231935#comment-14231935
] 

Prasanth J commented on HIVE-8888:
----------------------------------

Committed this patch to trunk. lvj_mapjoin.q ran successfully locally for me too. [~brocknoland]
Can you reenable lvj_mapjoin.q test to see if it runs successfully now?

> Mapjoin with LateralViewJoin generates wrong plan in Tez
> --------------------------------------------------------
>
>                 Key: HIVE-8888
>                 URL: https://issues.apache.org/jira/browse/HIVE-8888
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 0.13.0, 0.14.0, 0.13.1, 0.15.0
>            Reporter: Prasanth J
>            Assignee: Prasanth J
>             Fix For: 0.14.1
>
>         Attachments: HIVE-8888.1.patch, HIVE-8888.2.patch, HIVE-8888.3.patch, HIVE-8888.4.patch,
HIVE-8888.5.patch
>
>
> Queries like these 
> {code}
> with sub1 as
> (select aid, avalue from expod1 lateral view explode(av) avs as avalue ),
> sub2 as
> (select bid, bvalue from expod2 lateral view explode(bv) bvs as bvalue)
> select sub1.aid, sub1.avalue, sub2.bvalue
> from sub1,sub2
> where sub1.aid=sub2.bid;
> {code}
> generates twice the number of rows in Tez when compared to MR.



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