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From "Gopal V (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-13818) Fast Vector MapJoin not enhanced to use sortOrder when handling BinarySortable keys for Small Table?
Date Mon, 23 May 2016 09:48:12 GMT

    [ https://issues.apache.org/jira/browse/HIVE-13818?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15296167#comment-15296167
] 

Gopal V commented on HIVE-13818:
--------------------------------

This specific case looks like it internally confuses an {{int:int}} join asa a {{long:long}}
join.

Both are handled by same vector ops for joins, but need different ser/deser codepaths when
reading off the SerDe into the LongColumnVector.

There's no real difference once the deserialization is complete.

> Fast Vector MapJoin not enhanced to use sortOrder when handling BinarySortable keys for
Small Table?
> ----------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-13818
>                 URL: https://issues.apache.org/jira/browse/HIVE-13818
>             Project: Hive
>          Issue Type: Bug
>          Components: Hive
>            Reporter: Matt McCline
>            Assignee: Matt McCline
>            Priority: Critical
>         Attachments: HIVE-13818.01.patch, HIVE-13818.02.patch
>
>
> Changes for HIVE-13682 did fix a bug in Fast Hash Tables, but evidently not this issue
according to Gopal/Rajesh/Nita.



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