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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2021/12/02 19:38:00 UTC

[jira] [Commented] (SPARK-37523) Support optimize skewed partitions in Distribution and Ordering if numPartitions is not specified

    [ https://issues.apache.org/jira/browse/SPARK-37523?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17452574#comment-17452574 ] 

Apache Spark commented on SPARK-37523:
--------------------------------------

User 'huaxingao' has created a pull request for this issue:
https://github.com/apache/spark/pull/34785

> Support optimize skewed partitions in Distribution and Ordering if numPartitions is not specified
> -------------------------------------------------------------------------------------------------
>
>                 Key: SPARK-37523
>                 URL: https://issues.apache.org/jira/browse/SPARK-37523
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.3.0
>            Reporter: Huaxin Gao
>            Priority: Major
>
> When doing repartition in distribution and sort, if data source requests for a specific number of partitions, we should not optimize repartition. However, if data source does not request for a specific number of partitions, Spark should optimize repartition and split the skewed partitions if necessary.



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