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From "Johan Gustavsson (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-12664) Bug in reduce deduplication optimization causing ArrayOutOfBoundException
Date Tue, 15 Dec 2015 01:45:46 GMT

     [ https://issues.apache.org/jira/browse/HIVE-12664?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Johan Gustavsson updated HIVE-12664:
------------------------------------
    Attachment: HIVE-12664-1.patch

Original patch wasn't against trunk... sorry about that.


> Bug in reduce deduplication optimization causing ArrayOutOfBoundException
> -------------------------------------------------------------------------
>
>                 Key: HIVE-12664
>                 URL: https://issues.apache.org/jira/browse/HIVE-12664
>             Project: Hive
>          Issue Type: Bug
>          Components: Hive
>    Affects Versions: 1.1.1, 1.2.1
>            Reporter: Johan Gustavsson
>            Assignee: Johan Gustavsson
>         Attachments: HIVE-12664-1.patch, HIVE-12664.patch
>
>
> The optimisation check for reduce deduplication only checks the first child node for
join -and the check itself also contains a major bug- causing ArrayOutOfBoundException no
matter what.



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