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https://issues.apache.org/jira/browse/SPARK-3862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14938243#comment-14938243
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Reynold Xin commented on SPARK-3862:
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David,
Thanks. Let's chat there. Since I created the ticket, I have new thoughts on
how we can make something better with codegen, rather than writing specialized
operators.
> 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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