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From "Matt McCline (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-17073) Incorrect result with vectorization and SharedWorkOptimizer
Date Tue, 11 Jul 2017 20:34:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-17073?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16082920#comment-16082920
] 

Matt McCline commented on HIVE-17073:
-------------------------------------

Ok, LGTM +1 tests pending.

> Incorrect result with vectorization and SharedWorkOptimizer
> -----------------------------------------------------------
>
>                 Key: HIVE-17073
>                 URL: https://issues.apache.org/jira/browse/HIVE-17073
>             Project: Hive
>          Issue Type: Bug
>          Components: Vectorization
>    Affects Versions: 3.0.0
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>         Attachments: HIVE-17073.01.patch, HIVE-17073.02.patch, HIVE-17073.patch
>
>
> We get incorrect result with vectorization and multi-output Select operator created by
SharedWorkOptimizer. It can be reproduced in the following way.
> {code:title=Correct}
> select count(*) as h8_30_to_9
>   from src
>   join src1 on src.key = src1.key
>   where src1.value = "val_278";
> OK
> 2
> {code}
> {code:title=Correct}
> select count(*) as h9_to_9_30
>   from src
>   join src1 on src.key = src1.key
>   where src1.value = "val_255";
> OK
> 2
> {code}
> {code:title=Incorrect}
> select * from (
>   select count(*) as h8_30_to_9
>   from src
>   join src1 on src.key = src1.key
>   where src1.value = "val_278") s1
> join (
>   select count(*) as h9_to_9_30
>   from src
>   join src1 on src.key = src1.key
>   where src1.value = "val_255") s2;
> OK
> 2	0
> {code}
> Problem seems to be that some ds in the batch row need to be re-initialized after they
have been forwarded to each output.



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