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https://issues.apache.org/jira/browse/SPARK-25075?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17346242#comment-17346242
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Dongjoon Hyun commented on SPARK-25075:
---------------------------------------

Yes, we are still focusing on supporting Scala 2.13 first because it's not 
officially released yet. In addition, we are intentionally avoiding Scala 3 
because Apache Spark community supports at most 2 Scala versions historically.

BTW, the binary compatibility between Scala 2.13 and Scala 3 is one of the 
goals of Scala 3.

> Build and test Spark against Scala 2.13
> ---------------------------------------
>
>                 Key: SPARK-25075
>                 URL: https://issues.apache.org/jira/browse/SPARK-25075
>             Project: Spark
>          Issue Type: Umbrella
>          Components: Build, MLlib, Project Infra, Spark Core, SQL
>    Affects Versions: 3.0.0
>            Reporter: Guillaume Massé
>            Priority: Major
>
> This umbrella JIRA tracks the requirements for building and testing Spark 
> against the current Scala 2.13 milestone.



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