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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2021/03/02 09:51:00 UTC

[jira] [Assigned] (SPARK-34593) Preserve broadcast nested loop join output partitioning and ordering

     [ https://issues.apache.org/jira/browse/SPARK-34593?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-34593:
------------------------------------

    Assignee:     (was: Apache Spark)

> Preserve broadcast nested loop join output partitioning and ordering
> --------------------------------------------------------------------
>
>                 Key: SPARK-34593
>                 URL: https://issues.apache.org/jira/browse/SPARK-34593
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.2.0
>            Reporter: Cheng Su
>            Priority: Minor
>
> `BroadcastNestedLoopJoinExec` does not preserve `outputPartitioning` and `outputOrdering` right now. But it can preserve the streamed side partitioning and ordering when possible. This can help avoid shuffle and sort in later stage, if there's join and aggregation in the query.



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