2.0.0.M3a - Exception with GraphiteDataWriter (seen 5 times in three months)

Gatling (Open-Source)
1

This Exception was seen 5 times over three months. Pretty uncommon.

Simulation finished.
Generating reports…
Parsing log file(s)…
[ERROR] [12/26/2013 22:09:32.746] [GatlingSystem-akka.actor.default-dispatcher-8] [akka://GatlingSystem/user/$z] Actor GraphiteDataWriter doesn’t support message Send
java.lang.IllegalArgumentException: Actor GraphiteDataWriter doesn’t support message Send
at io.gatling.core.action.BaseActor.unhandled(Actions.scala:30)
at akka.actor.ActorCell$$anonfun$receiveMessage$1.apply(ActorCell.scala:425)
at akka.actor.ActorCell$$anonfun$receiveMessage$1.apply(ActorCell.scala:425)
at io.gatling.core.result.writer.DataWriter$$anonfun$uninitialized$1.applyOrElse(DataWriter.scala:66)
at akka.actor.ActorCell.receiveMessage(ActorCell.scala:425)
at akka.actor.ActorCell.invoke(ActorCell.scala:386)
at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:230)
at akka.dispatch.Mailbox.run(Mailbox.scala:212)
at akka.dispatch.ForkJoinExecutorConfigurator$MailboxExecutionTask.exec(AbstractDispatcher.scala:506)
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)

Parsing log file(s) done

2

This looks like a race condition in the ActorSystem shutdown.
This part has been completely rewritten in upcoming version.
Could you please ping if this still happens once we have released and you have upgraded?