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https://issues.apache.org/jira/browse/TOREE-442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16258649#comment-16258649
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Hans Schlenker commented on TOREE-442:
--------------------------------------
(Spark 2.2.0, Scala 2.11.8, Toree 0.2.0 rc1|rc2)
I am having the exact same issue with the following content in a cell:
def b(f:(Int => Int)) = f(0)
The problem seems to come from the first class / higher order function
definition.
Is there anything I can do to solve this? I need Toree for a lecture that I
will give in a few weeks and now I am blocked with the current Spark/Toree
versions.
Tried Toree 0.2.0 RC1 and RC2.
Thanks!
> Notebook hangs with ScriptException decoding functions with call by name
> -------------------------------------------------------------------------
>
> Key: TOREE-442
> URL: https://issues.apache.org/jira/browse/TOREE-442
> Project: TOREE
> Issue Type: Bug
> Components: Kernel
> Affects Versions: 0.2.0
> Environment: Mac
> Reporter: Josiah Samuel Sathiadass
>
> Jupyter notebook with Toree kernel hangs when decoding a cell with the
> following content,
> ```
> def function( func : => Int) = {
>
> }
> ```
> I'm using the fresh built version of toree from the source master branch.
> The only way to get back the control is to restart jupyter.
> I see the following error message in the console,
> {{javax.script.ScriptException: compile-time error
> at scala.tools.nsc.interpreter.IMain.compiled(IMain.scala:602)
> at scala.tools.nsc.interpreter.IMain.eval(IMain.scala:1074)
> at javax.script.AbstractScriptEngine.eval(AbstractScriptEngine.java:264)
> at
> org.apache.toree.kernel.interpreter.scala.ScalaInterpreterSpecific$class.read(ScalaInterpreterSpecific.scala:261)
> at
> org.apache.toree.kernel.interpreter.scala.ScalaInterpreter.read(ScalaInterpreter.scala:42)
> at
> org.apache.toree.kernel.interpreter.scala.ScalaInterpreter$$anonfun$prepareResult$1.apply(ScalaInterpreter.scala:182)
> at
> org.apache.toree.kernel.interpreter.scala.ScalaInterpreter$$anonfun$prepareResult$1.apply(ScalaInterpreter.scala:181)
> at
> scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
> at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:186)
> at
> org.apache.toree.kernel.interpreter.scala.ScalaInterpreter.prepareResult(ScalaInterpreter.scala:181)
> at
> org.apache.toree.kernel.interpreter.scala.ScalaInterpreter$$anonfun$interpretMapToResultAndOutput$1.apply(ScalaInterpreter.scala:261)
> at
> org.apache.toree.kernel.interpreter.scala.ScalaInterpreter$$anonfun$interpretMapToResultAndOutput$1.apply(ScalaInterpreter.scala:256)
> at scala.util.Success$$anonfun$map$1.apply(Try.scala:237)
> at scala.util.Try$.apply(Try.scala:192)
> at scala.util.Success.map(Try.scala:237)
> at scala.concurrent.Future$$anonfun$map$1.apply(Future.scala:237)
> at scala.concurrent.Future$$anonfun$map$1.apply(Future.scala:237)
> at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:32)
> at
> scala.concurrent.impl.ExecutionContextImpl$AdaptedForkJoinTask.exec(ExecutionContextImpl.scala:121)
> 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)
> }}
> Rarely i get this error message too,
> {{17/09/28 17:33:03 ERROR InterpreterActor: Could not execute code def
> timeit[T]( code: => T): T ={
> val now1 = System.nanoTime
> val ret: T = code
> val ms1 = (System.nanoTime - now1) / 1000000
> println("Elapsed time: %d ms".format( ms1))
> ret
> } because of exception: Ask timed out on
> [Actor[akka://spark-kernel-actor-system/user/interpreter/execute_request_task#160406270]]
> after [21474835000 ms].
> Sender[Actor[akka://spark-kernel-actor-system/user/interpreter#1508607646]]
> sent message of type "scala.Tuple3".}}
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