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