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https://issues.apache.org/jira/browse/TOREE-497?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16792168#comment-16792168
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Manu Zhang commented on TOREE-497:
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Yes, I'm using Toree as a Scala kernel and the notebook is run from command
line through jupyter client API.
> Fail to executing empty cell
> ----------------------------
>
> Key: TOREE-497
> URL: https://issues.apache.org/jira/browse/TOREE-497
> Project: TOREE
> Issue Type: Bug
> Components: Kernel
> Affects Versions: 0.3.0
> Reporter: Manu Zhang
> Priority: Major
>
> Executing empty cell would throw
> {code:java}
> java.lang.ClassNotFoundException: java.lang.String cannot be cast to
> scala.collection.immutable.Map
> {code}
> at {{ExecuteRequestRelay$packageFutureResponse}}
> It seems {{Map}} is expected for {{ExecuteResult}} but a {{String}} is
> returned when executing empty cell.
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