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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-3862) MultiWayBroadcastInnerHashJoin
Date Thu, 02 Apr 2015 06:20:53 GMT

    [ https://issues.apache.org/jira/browse/SPARK-3862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14392214#comment-14392214
] 

Apache Spark commented on SPARK-3862:
-------------------------------------

User 'chenghao-intel' has created a pull request for this issue:
https://github.com/apache/spark/pull/5326

> MultiWayBroadcastInnerHashJoin
> ------------------------------
>
>                 Key: SPARK-3862
>                 URL: https://issues.apache.org/jira/browse/SPARK-3862
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>            Reporter: Reynold Xin
>
> It is common to have a single fact table inner join many small dimension tables.  We
can exploit this fact and create a MultiWayBroadcastInnerHashJoin (or maybe just MultiwayDimensionJoin)
operator that optimizes for this pattern.



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