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https://issues.apache.org/jira/browse/SPARK-27682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16837906#comment-16837906
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Sean Owen commented on SPARK-27682:
-----------------------------------
Looks like we can replace usages of removed collections mentioned at
https://docs.scala-lang.org/overviews/core/collections-migration-213.html and
can remove use of .to[...], but remove collection.breakOut will have to wait as
its replacement is only in 2.13 and its use is important for performance, it
seems.
> Avoid use of Scala collection classes that are removed in 2.13
> --------------------------------------------------------------
>
> Key: SPARK-27682
> URL: https://issues.apache.org/jira/browse/SPARK-27682
> Project: Spark
> Issue Type: Sub-task
> Components: ML, MLlib, Spark Core, SQL
> Affects Versions: 3.0.0
> Reporter: Sean Owen
> Assignee: Sean Owen
> Priority: Minor
>
> Scala 2.13 will remove several collection classes like {{MutableList}}. We
> should avoid using them and replace with similar classes proactively.
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