[jira] [Commented] (SPARK-40946) Introduce a new DataSource V2 interface SupportsPushDownClusterKeys

["Apache Spark (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-40946?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17626007#comment-17626007 ] 

Apache Spark commented on SPARK-40946:
--------------------------------------

User 'huaxingao' has created a pull request for this issue:
https://github.com/apache/spark/pull/38434

> Introduce a new DataSource V2 interface SupportsPushDownClusterKeys
> -------------------------------------------------------------------
>
>                 Key: SPARK-40946
>                 URL: https://issues.apache.org/jira/browse/SPARK-40946
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>    Affects Versions: 3.4.0
>            Reporter: Huaxin Gao
>            Priority: Major
>
> A mix-in interface for ScanBuilder. Data sources can implement this interface to push down all the join or aggregate keys to data sources. A return value true indicates that data source will return input partitions  following the clustering keys. Otherwise, a false return value indicates the data source doesn't make such a guarantee, even though it may still report a partitioning that may or may not be compatible with the given clustering keys, and it's Spark's responsibility to group the input partitions whether it can be applied.



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