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https://issues.apache.org/jira/browse/HIVE-1641?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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He Yongqiang resolved HIVE-1641.
--------------------------------

    Resolution: Fixed

I just committed! Thanks Liyin!

> add map joined table to distributed cache
> -----------------------------------------
>
>                 Key: HIVE-1641
>                 URL: https://issues.apache.org/jira/browse/HIVE-1641
>             Project: Hive
>          Issue Type: Improvement
>          Components: Query Processor
>    Affects Versions: 0.7.0
>            Reporter: Namit Jain
>            Assignee: Liyin Tang
>             Fix For: 0.7.0
>
>         Attachments: Hive-1641(3).txt, Hive-1641(4).patch, 
> Hive-1641(5).patch, Hive-1641.patch
>
>
> Currently, the mappers directly read the map-joined table from HDFS, which 
> makes it difficult to scale.
> We end up getting lots of timeouts once the number of mappers are beyond a 
> few thousand, due to 
> concurrent mappers.
> It would be good idea to put the mapped file into distributed cache and read 
> from there instead.

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