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https://issues.apache.org/jira/browse/SPARK-27683?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16838092#comment-16838092
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Sean Owen commented on SPARK-27683:
-----------------------------------
Yeah I mentioned that above -- I don't think it helps as it still leaves you
without a way to produce a version that can cross compile to 2.12 and 2.13. The
import is different, and the resulting binary signature is different.
> Remove usage of TraversableOnce
> -------------------------------
>
> Key: SPARK-27683
> URL: https://issues.apache.org/jira/browse/SPARK-27683
> Project: Spark
> Issue Type: Sub-task
> Components: ML, Spark Core, SQL, Structured Streaming
> Affects Versions: 3.0.0
> Reporter: Sean Owen
> Assignee: Sean Owen
> Priority: Major
>
> As with {{Traversable}}, {{TraversableOnce}} is going away in Scala 2.13. We
> should use {{IterableOnce}} instead. This one is a bigger change as there are
> more API methods with the existing signature.
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