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https://issues.apache.org/jira/browse/SPARK-27681?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16837749#comment-16837749
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Marcelo Vanzin commented on SPARK-27681:
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OOC, what happens if we do nothing?
As far as I can see, Scala 2.12 builds will have scala.Seq in the API, Scala
2.13 builds will have scala.collection.immutable.Seq, and that should be fine,
right, since those builds are not binary compatible with each other anyway?
> Use scala.collection.Seq explicitly instead of scala.Seq alias
> --------------------------------------------------------------
>
> Key: SPARK-27681
> URL: https://issues.apache.org/jira/browse/SPARK-27681
> Project: Spark
> Issue Type: Sub-task
> Components: ML, MLlib, Spark Core, SQL, Structured Streaming
> Affects Versions: 3.0.0
> Reporter: Sean Owen
> Assignee: Sean Owen
> Priority: Major
>
> {{scala.Seq}} is widely used in the code, and is an alias for
> {{scala.collection.Seq}} in Scala 2.12. It will become an alias for
> {{scala.collection.immutable.Seq}} in Scala 2.13. To avoid API changes, we
> should simply explicit import and use {{scala.collection.Seq}}.
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