[jira] [Commented] (SPARK-44065) Optimize BroadcastHashJoin skew when localShuffleReader is disabled

["Zhen Wang (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-44065?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17733271#comment-17733271 ] 

Zhen Wang commented on SPARK-44065:
-----------------------------------

https://github.com/apache/spark/pull/41609

> Optimize BroadcastHashJoin skew when localShuffleReader is disabled
> -------------------------------------------------------------------
>
>                 Key: SPARK-44065
>                 URL: https://issues.apache.org/jira/browse/SPARK-44065
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.5.0
>            Reporter: Zhen Wang
>            Priority: Major
>
> In RemoteShuffleService services such as uniffle and celeborn, it is recommended to disable localShuffleReader by default for better performance. But it may make BroadcastHashJoin skewed, so I want to optimize BroadcastHashJoin skew in OptimizeSkewedJoin when localShuffleReader is disabled.
>  
> Refer to:
> https://github.com/apache/incubator-celeborn#spark-configuration
> https://github.com/apache/incubator-uniffle/blob/master/docs/client_guide.md#support-spark-aqe



--
This message was sent by Atlassian Jira
(v8.20.10#820010)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org