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Posted to issues@spark.apache.org by "XiDuo You (Jira)" <ji...@apache.org> on 2022/07/07 12:40:00 UTC
[jira] [Updated] (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 ]
XiDuo You updated SPARK-39710:
------------------------------
Description:
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 max rows
- 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 max rows
> 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
> 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 max rows
> - 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 max rows
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