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https://issues.apache.org/jira/browse/TOREE-485?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16633665#comment-16633665
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Sergey Kuznetsov commented on TOREE-485:
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[~luciano resende] , I gave it a try and it works great! Thanks for helping!
> Not able to run Toree kernel in JupyterLab 0.34
> -----------------------------------------------
>
> Key: TOREE-485
> URL: https://issues.apache.org/jira/browse/TOREE-485
> Project: TOREE
> Issue Type: Bug
> Environment: Ubuntu 18.04, Python 3.6.6, JupyterLab v0.34.12, Apache
> Toree 0.2.0-rc6
> Reporter: Sergey Kuznetsov
> Assignee: Luciano Resende
> Priority: Major
>
> Hello! I've been using Toree kernel in JupyterLab (Python 2.7) versions 0.32
> and 0.33 for some time and it worked great. Recently I updated JupyterLab to
> version 0.34 that supports only Python 3 and now I'm not ably to run Scala
> code in Toree. The kernel starts fine, without any warnings, but once I
> executed the cell with simple import I get the following error:
> {noformat}
> ERROR OneForOneStrategy:159 -
> JsResultException(errors:List((/deletedCells,List(ValidationError(error.expected.jsstring,WrappedArray())))))
> play.api.libs.json.JsResultException:
> JsResultException(errors:List((/deletedCells,List(ValidationError(error.expected.jsstring,WrappedArray())))))
> at play.api.libs.json.JsValue$$anonfun$2.apply(JsValue.scala:67)
> at play.api.libs.json.JsValue$$anonfun$2.apply(JsValue.scala:67)
> at play.api.libs.json.JsResult$class.fold(JsResult.scala:77)
> at play.api.libs.json.JsError.fold(JsResult.scala:13)
> at play.api.libs.json.JsValue$class.as(JsValue.scala:65)
> at play.api.libs.json.JsObject.as(JsValue.scala:166)
> at
> org.apache.toree.kernel.protocol.v5.kernel.Utilities$.ZMQMessageToKernelMessage(Utilities.scala:69)
> at
> org.apache.toree.kernel.protocol.v5.kernel.socket.ZeromqKernelMessageSocket$$anonfun$receive$1.applyOrElse(ZeromqKernelMessageSocket.scala:48)
> at akka.actor.Actor$class.aroundReceive(Actor.scala:502)
> at
> org.apache.toree.kernel.protocol.v5.kernel.socket.ZeromqKernelMessageSocket.aroundReceive(ZeromqKernelMessageSocket.scala:39)
> at akka.actor.ActorCell.receiveMessage(ActorCell.scala:526)
> at akka.actor.ActorCell.invoke(ActorCell.scala:495)
> at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:257)
> at akka.dispatch.Mailbox.run(Mailbox.scala:224)
> at akka.dispatch.Mailbox.exec(Mailbox.scala:234)
> at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
> at
> scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
> at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
> at
> scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
> 2018-09-26 14:45:29 ERROR ZeroMQSocketRunnable:167 - Unexpected exception in
> 0mq socket runnable!
> org.zeromq.ZMQException: Errno 48 : Address already in use
> at org.zeromq.ZMQ$Socket.mayRaise(ZMQ.java:1425)
> at org.zeromq.ZMQ$Socket.bind(ZMQ.java:1187)
> at org.zeromq.ZMQ$Socket.bind(ZMQ.java:1148)
> at
> org.apache.toree.communication.socket.ZeroMQSocketRunnable$$anonfun$processOptions$2.apply(ZeroMQSocketRunnable.scala:88)
> at
> org.apache.toree.communication.socket.ZeroMQSocketRunnable$$anonfun$processOptions$2.apply(ZeroMQSocketRunnable.scala:87)
> at
> scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
> at scala.collection.mutable.WrappedArray.foreach(WrappedArray.scala:35)
> at
> org.apache.toree.communication.socket.ZeroMQSocketRunnable.processOptions(ZeroMQSocketRunnable.scala:87)
> at
> org.apache.toree.communication.socket.ZeroMQSocketRunnable.run(ZeroMQSocketRunnable.scala:144)
> at java.lang.Thread.run(Thread.java:748){noformat}
> I tried to update Toree: install with pip3 the latest rc6 release, but the
> issue remains. Is there any way to fix this?
>
> Thanks,
> Sergey
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