[TOREE-442] Notebook hangs with ScriptException decoding functions with call by name

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 0.2.0
• Component/s: Kernel
• Environment: Mac
• Assignee: Unassigned
• Reporter: Josiah Samuel Sathiadass
• Created: 28/Sep/17 12:19
• Updated: 21/Mar/18 16:29

Description

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]. SenderActor[akka://spark-kernel-actor-system/user/interpreter#1508607646] sent message of type "scala.Tuple3".}}

Issue Links

• is cloned by: TOREE-466 Function taking a function as parameter, Kernel Crashes