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Posted to dev@hive.apache.org by "Namit Jain (JIRA)" <ji...@apache.org> on 2008/12/24 00:26:44 UTC
[jira] Updated: (HIVE-195) map-side joins are not supported
[ https://issues.apache.org/jira/browse/HIVE-195?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Namit Jain updated HIVE-195:
----------------------------
Attachment: 195.patch1.txt
> map-side joins are not supported
> --------------------------------
>
> Key: HIVE-195
> URL: https://issues.apache.org/jira/browse/HIVE-195
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
> Reporter: Namit Jain
> Assignee: Namit Jain
> Attachments: 195.patch1.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 join.
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