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Posted to issues@spark.apache.org by "Xianjin YE (Jira)" <ji...@apache.org> on 2021/04/28 16:00:06 UTC

[jira] [Commented] (SPARK-34705) Add code-gen for all join types of sort merge join

    [ https://issues.apache.org/jira/browse/SPARK-34705?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17334830#comment-17334830 ] 

Xianjin YE commented on SPARK-34705:
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[~chengsu] could you share some number of the CPU performance improvement?

> Add code-gen for all join types of sort merge join
> --------------------------------------------------
>
>                 Key: SPARK-34705
>                 URL: https://issues.apache.org/jira/browse/SPARK-34705
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.2.0
>            Reporter: Cheng Su
>            Priority: Minor
>
> Currently sort merge join only supports inner join type ([https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/execution/joins/SortMergeJoinExec.scala#L374] ). We added code-gen for other join types internally in our fork and saw obvious CPU performance improvement. Create this Jira to propose to merge back to upstream.



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