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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2020/09/07 02:39:00 UTC

[jira] [Assigned] (SPARK-32806) SortMergeJoin with partial hash distribution can be optimized to remove shuffle

     [ https://issues.apache.org/jira/browse/SPARK-32806?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-32806:
------------------------------------

    Assignee:     (was: Apache Spark)

> SortMergeJoin with partial hash distribution can be optimized to remove shuffle
> -------------------------------------------------------------------------------
>
>                 Key: SPARK-32806
>                 URL: https://issues.apache.org/jira/browse/SPARK-32806
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.1.0
>            Reporter: Terry Kim
>            Priority: Minor
>
> SortMergeJoin with partial hash distribution can be optimized to remove shuffle if the hash partitioning expressions are a subset of join keys for both sides.



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