[jira] [Created] (TOREE-442) Notebook hangs with ScriptException decoding functions with call by name

["Josiah Samuel Sathiadass (JIRA)" <ji...@apache.org>]

Josiah Samuel Sathiadass created TOREE-442:
----------------------------------------------

             Summary: 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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