Hi all,
It has been a few years since this was discovered and the warning is still
present [1] in the docs. Is this advise still the case, and/or are there
ways to test with optimisation on that we can use to check for this "weird
behaviour"?
Cheers,
Alessandro
On Friday, April 12, 2013 at 12:20:22 PM UTC-7, Jamie Allen wrote:
>
> I noticed I wasn't getting output to the console when an actor had an
> exception, and couldn't figure out why. It turned out I was specifying the
> "-optimize" scalac flag in my build.sbt. As a simple example of how to
> reproduce this, here is a simple build.sbt file:
>
>
> scalaVersion := "2.9.1"
>
> name := "Akka Logging Test"
>
> scalacOptions += "-optimize"
>
> libraryDependencies += "com.typesafe.akka" % "akka-actor" % "2.0.3"
>
>
> And here is some simple code to reproduce:
>
> import akka.actor.OneForOneStrategy
> import akka.actor.SupervisorStrategy._
> import akka.actor.ActorSystem
> import akka.actor.Actor
> import akka.util.duration._
> import akka.actor.Props
> case object Start
> case object MakeCrash
> // Create a supervisor and an actor that dies 5 times in 1 minute, check
> output in logs
> class MySupervisor extends Actor {
> override val supervisorStrategy = OneForOneStrategy(maxNrOfRetries = 5,
> withinTimeRange = 1 minute) {
> case ae: ArithmeticException => Restart
> }
> def child = context.actorOf(Props[MyChild])
> def receive = {
> case Start => child ! MakeCrash
> }
> }
> class MyChild extends Actor {
> def receive = {
> case MakeCrash => 1 / 0
> }
> }
> object TestBootstrap extends App {
> val system = ActorSystem()
> val supervisor = system.actorOf(Props[MySupervisor])
> supervisor ! Start
> Thread.sleep(2000)
> supervisor ! Start
> Thread.sleep(2000)
> supervisor ! Start
> Thread.sleep(2000)
> supervisor ! Start
> Thread.sleep(2000)
> supervisor ! Start
> Thread.sleep(2000)
> // Should be dead now
> supervisor ! Start
> Thread.sleep(2000)
> system.shutdown
> }
>
> To fix the problem, just remove the scalacOptions from the build.sbt file.
>
>
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