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https://issues.apache.org/jira/browse/SPARK-17367?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15457848#comment-15457848
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Sean Owen commented on SPARK-17367:
-----------------------------------
I doesn't work in the Scala REPL, as SI-9910 indicates. But it is definitely
caused by -Yrepl-class-based, which the Spark shell sets. It seems like a Scala
issue then, but, I also don't know if -Yrepl-class-based must be set for Spark
or what it does. [~prashant_] you might know; is it possible this is just a
hold-over from old code we don't need? if we need it though, then this isn't
something Spark can fix unfortunately.
> 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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