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From "Namit Jain (JIRA)" <>
Subject [jira] Commented: (HIVE-195) map-side joins are not supported
Date Tue, 02 Jun 2009 18:55:07 GMT


Namit Jain commented on HIVE-195:

Some cleanups can be performed in follow-ups.

Filed new JIRAS:

> map-side joins are not supported
> --------------------------------
>                 Key: HIVE-195
>                 URL:
>             Project: Hadoop Hive
>          Issue Type: New Feature
>          Components: Query Processor
>            Reporter: Namit Jain
>            Assignee: Namit Jain
>         Attachments: 195.patch1.txt, 195.patch2.txt, 195.patch3.txt
> map-side joins are not supported.
> If all the tables but one are small and can fit in memory, the join should be performed
on the map-side. Ideally, it should be all cost-based, but
> to start with, the user should be given an option to specify that he needs a map-side

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