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https://issues.apache.org/jira/browse/TOREE-365?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jakob Odersky closed TOREE-365.
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Resolution: Won't Fix
Closing as discussed in the pull request. See TOREE-368 for continuation.
> Certain interpreter evaluations do not return result strings
> ------------------------------------------------------------
>
> Key: TOREE-365
> URL: https://issues.apache.org/jira/browse/TOREE-365
> Project: TOREE
> Issue Type: Bug
> Reporter: Jakob Odersky
>
> The scala interpreter currently only returns results for expressions. Import
> statements and declarations will not show up as results in a notebook
> (although they are evaluated internally).
> This behaviour is related to the
> [ScalaInterpreter#truncateResult|https://github.com/apache/incubator-toree/blob/master/scala-interpreter/src/main/scala/org/apache/toree/kernel/interpreter/scala/ScalaInterpreter.scala#L165-L187]
> function. This function runs the result string of a REPL line through a
> regex, in order to remove the "resX:" part. The function returns the empty
> string in case the line does not start with "resX:", therefore returning an
> empty string for import statements and other declarations. This can have
> several subtle side effects, such as TOREE-340, or a toree client never
> completing the "onResult" callback.
> A quick fix to this issue is to return the result string as-is if it does not
> start with "resX".
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