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https://issues.apache.org/jira/browse/SPARK-20706?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16008010#comment-16008010
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Raphael Roth commented on SPARK-20706:
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also tested with scala console 2.11.8, this works fine. So I assume the bug is
in spark-shell itself
> Spark-shell not overriding method definition
> --------------------------------------------
>
> Key: SPARK-20706
> URL: https://issues.apache.org/jira/browse/SPARK-20706
> Project: Spark
> Issue Type: Bug
> Components: Spark Shell
> Affects Versions: 2.0.0
> Environment: Linux, Scala 2.11.8
> Reporter: Raphael Roth
> Priority: Minor
>
> In the following example, the definition of myMethod is not correctly updated:
> ------------------------------
> def myMethod() = "first definition"
> val tmp = myMethod(); val out = tmp
> println(out) // prints "first definition"
> def myMethod() = "second definition" // override above myMethod
> val tmp = myMethod(); val out = tmp
> println(out) // should be "second definition" but is "first definition"
> ------------------------------
> I'm using semicolon to force two statements to be compiled at the same time.
> It's also possible to reproduce the behavior using :paste
> So if I-redefine myMethod, the implementation seems not to be updated in this
> case. I figured out that the second-last statement (val out = tmp) causes
> this behavior, if this is moved in a separate block, the code works just fine.
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