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Posted to issues@spark.apache.org by "Wenchen Fan (Jira)" <ji...@apache.org> on 2020/01/14 12:38:00 UTC

[jira] [Assigned] (SPARK-29544) Optimize skewed join at runtime with new Adaptive Execution

     [ https://issues.apache.org/jira/browse/SPARK-29544?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wenchen Fan reassigned SPARK-29544:
-----------------------------------

    Assignee: Ke Jia

> Optimize skewed join at runtime with new Adaptive Execution
> -----------------------------------------------------------
>
>                 Key: SPARK-29544
>                 URL: https://issues.apache.org/jira/browse/SPARK-29544
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: Ke Jia
>            Assignee: Ke Jia
>            Priority: Major
>         Attachments: Skewed Join Optimization Design Doc.docx
>
>
> Implement a rule in the new adaptive execution framework introduced in [SPARK-23128|https://issues.apache.org/jira/browse/SPARK-23128]. This rule is used to handle the skew join optimization based on the runtime statistics (data size and row count).



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