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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2021/04/25 05:22:00 UTC

[jira] [Assigned] (SPARK-35214) OptimizeSkewedJoin support ShuffledHashJoinExec

     [ https://issues.apache.org/jira/browse/SPARK-35214?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-35214:
------------------------------------

    Assignee: Apache Spark

> OptimizeSkewedJoin support ShuffledHashJoinExec
> -----------------------------------------------
>
>                 Key: SPARK-35214
>                 URL: https://issues.apache.org/jira/browse/SPARK-35214
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.2.0
>            Reporter: ulysses you
>            Assignee: Apache Spark
>            Priority: Major
>
> Currently, we have already supported all type of join through hint that make it easy to choose the join implementation.
> We would choose `ShuffledHashJoin` if one table is not big but over the broadcast threshold. It's better that we can support optimize it in `OptimizeSkewedJoin`.
>  



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