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https://issues.apache.org/jira/browse/TOREE-497?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16791773#comment-16791773
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Kevin Bates commented on TOREE-497:
-----------------------------------
Thank you - interesting. So the notebook front end must prevent empty cells
from being sent in the first place.
And you're using Toree as s Scala kernel?
> 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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