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Posted to dev@hive.apache.org by "Liyin Tang (JIRA)" <ji...@apache.org> on 2010/09/28 07:45:39 UTC

[jira] Commented: (HIVE-1642) Convert join queries to map-join based on size of table/row

    [ https://issues.apache.org/jira/browse/HIVE-1642?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12915626#action_12915626 ] 

Liyin Tang commented on HIVE-1642:
----------------------------------

Are we talking about dynamically changing execution plan based on the table size?

> Convert join queries to map-join based on size of table/row
> -----------------------------------------------------------
>
>                 Key: HIVE-1642
>                 URL: https://issues.apache.org/jira/browse/HIVE-1642
>             Project: Hadoop Hive
>          Issue Type: Improvement
>          Components: Query Processor
>            Reporter: Namit Jain
>            Assignee: Liyin Tang
>             Fix For: 0.7.0
>
>
> Based on the number of rows and size of each table, Hive should automatically be able to convert a join into map-join.

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