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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2022/07/08 08:06:00 UTC

[jira] [Assigned] (SPARK-39710) Support push topK through outer join

     [ https://issues.apache.org/jira/browse/SPARK-39710?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-39710:
------------------------------------

    Assignee: Apache Spark

> Support push topK through outer join
> ------------------------------------
>
>                 Key: SPARK-39710
>                 URL: https://issues.apache.org/jira/browse/SPARK-39710
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.4.0
>            Reporter: XiDuo You
>            Assignee: Apache Spark
>            Priority: Major
>
> Supports push down local limit and local sort from TopK through other join:
>   - for a left outer join, the references of ordering of TopK come from the left side and
>   the limits of TopK is smaller than left side 
>   - for a right outer join, the references of ordering of TopK come from the right side and
>   the limits of TopK is smaller than right side 



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