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https://issues.apache.org/jira/browse/SPARK-17367?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15457862#comment-15457862
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Jakob Odersky commented on SPARK-17367:
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You're absolutely correct, it is a Scala issue. I raised it here as well
though, since the -Yrepl-class-based option was originally created for Spark
(the standard object-wrapping behaviour had issues with the ClosureCleaner and
serialization IIRC) and was contributed back to Scala.
Should I close the issue?
> Cannot define value classes in REPL
> -----------------------------------
>
> Key: SPARK-17367
> URL: https://issues.apache.org/jira/browse/SPARK-17367
> Project: Spark
> Issue Type: Bug
> Components: Spark Shell
> Reporter: Jakob Odersky
>
> It is currently not possible to define a class extending `AnyVal` in the
> REPL. The underlying reason is the {{-Yrepl-class-based}} option used by
> Spark Shell.
> The report here is more of an FYI for anyone stumbling upon the problem, see
> the upstream issue [https://issues.scala-lang.org/browse/SI-9910] for any
> progress.
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