[jira] [Commented] (SPARK-3862) MultiWayBroadcastInnerHashJoin

["David Sabater (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-3862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14935054#comment-14935054 ] 

David Sabater commented on SPARK-3862:
--------------------------------------

Thanks Reynold - I am really interested in this feature and happy to contribute in whatever format, I see there is a Jira task opened around that actually!
https://issues.apache.org/jira/browse/SPARK-3863

Let me know how I can contribute please, I am actually attending Spark Summit EU so we may see each other to talk about potential use cases and ways to collaborate.


Regards. 

> 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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