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Posted to issues@spark.apache.org by "Dongjoon Hyun (Jira)" <ji...@apache.org> on 2026/02/20 19:14:00 UTC

[jira] [Updated] (SPARK-50539) Improve Spark Shading/Relocation for JVM users

     [ https://issues.apache.org/jira/browse/SPARK-50539?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dongjoon Hyun updated SPARK-50539:
----------------------------------
    Affects Version/s: 4.2.0
                           (was: 4.0.0)
                           (was: 3.5.3)

> Improve Spark Shading/Relocation for JVM users
> ----------------------------------------------
>
>                 Key: SPARK-50539
>                 URL: https://issues.apache.org/jira/browse/SPARK-50539
>             Project: Spark
>          Issue Type: Improvement
>          Components: Build
>    Affects Versions: 4.2.0
>            Reporter: Holden Karau
>            Priority: Major
>
> Improve the shading of Spark to reduce the class path conflicts & (optionally): setup tests to alert when we accidentally add new classes to the classpath.
>  
> While long term Spark Connect may reduce the need for these improvements, it is not yet ready for all use cases – especially more complex ones which are more likely to encounter issues with shading and relocation. Even in a post spark connect world, proper shading will make writing complex UDFs depending on external libraries easier.



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