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From "Steven Wong (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-5418) Integer overflow bug in ConditionalResolverCommonJoin.AliasFileSizePair
Date Fri, 11 Oct 2013 17:10:44 GMT

     [ https://issues.apache.org/jira/browse/HIVE-5418?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Steven Wong updated HIVE-5418:
------------------------------

    Affects Version/s: 0.12.0

> Integer overflow bug in ConditionalResolverCommonJoin.AliasFileSizePair
> -----------------------------------------------------------------------
>
>                 Key: HIVE-5418
>                 URL: https://issues.apache.org/jira/browse/HIVE-5418
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 0.11.0, 0.12.0, 0.13.0
>            Reporter: Steven Wong
>            Assignee: Steven Wong
>             Fix For: 0.13.0
>
>         Attachments: HIVE-5418.0.patch, HIVE-5418.1.patch
>
>
> Sometimes, auto map join conversion unexpectedly fails to choose map join over a common
join, even if the auto map join conversion's size criterion is satisfied.
> This is caused by an integer overflow bug in the method {{compareTo}} of the class {{ConditionalResolverCommonJoin.AliasFileSizePair}}.
> The bug is triggered only if the big table size exceeds the small table size by at least
2**31 bytes.



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