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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] [Commented] (SPARK-35214) OptimizeSkewedJoin support
ShuffledHashJoinExec
[ https://issues.apache.org/jira/browse/SPARK-35214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17331393#comment-17331393 ]
Apache Spark commented on SPARK-35214:
--------------------------------------
User 'ulysses-you' has created a pull request for this issue:
https://github.com/apache/spark/pull/32328
> 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
> 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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