Might want to print those constructed strings out and then correlate to when you get the failure.
On Wed, Feb 12, 2014 at 11:21 PM, Bruce <[email protected]> wrote: > Hi Viktor, > > I've been constructing the paths on-the-fly in the following manner: > > > context.actorSelection("akka://system/user/myApp/myActor_"+instance+"_"+symbol) > ! aMessage > > where instance is an Int and symbol is a String, and both change as I > iterate. To date, I haven't had any issues with this approach. > > Cheers, > Bruce > > > On Wednesday, 12 February 2014 17:09:02 UTC-5, √ wrote: > >> Hi Bruce, >> >> Looks to be some weird use of actorSelection: https:// >> github.com/akka/akka/blob/v2.2.3/akka-actor/src/main/scala/ >> akka/actor/ActorCell.scala#L493 >> >> >> On Wed, Feb 12, 2014 at 11:03 PM, Bruce <[email protected]> wrote: >> >>> Hi all, >>> >>> I'm hoping that someone will be able point me in the right direction, >>> given their experience on what usually causes the following error. >>> *Note*: due to a confidentiality agreement, I'm unable to post the code >>> that causes it. There doesn't seem to be any direct information in the >>> stack trace that would identify my offending code. I've gone as far as >>> testing each individual message for null prior to sending, and nothing >>> shows up. I've also tried to trap the exception with fine-grained >>> try-catch blocks, and again nothing shows up. Any ideas? >>> >>> Thanks in advance, >>> Bruce >>> >>> 2014-02-12 16:55:24,372 ERROR [system-akka.actor.default-dispatcher-16] >>> a.a.OneForOneStrategy [Slf4jLogger.scala:66] Message is null >>> akka.actor.InvalidMessageException: Message is null >>> at akka.dispatch.Envelope$.apply(AbstractDispatcher.scala:29) >>> ~[akka-actor_2.10-2.2.3.jar:2.2.3] >>> at akka.actor.Cell$class.sendMessage(ActorCell.scala:259) >>> ~[akka-actor_2.10-2.2.3.jar:2.2.3] >>> at akka.actor.ActorCell.sendMessage(ActorCell.scala:338) >>> ~[akka-actor_2.10-2.2.3.jar:2.2.3] >>> at akka.actor.LocalActorRef.$bang(ActorRef.scala:389) >>> ~[akka-actor_2.10-2.2.3.jar:2.2.3] >>> at akka.actor.ActorRef.tell(ActorRef.scala:125) >>> ~[akka-actor_2.10-2.2.3.jar:2.2.3] >>> at >>> akka.actor.ActorCell$$anonfun$autoReceiveMessage$2.apply(ActorCell.scala:493) >>> ~[akka-actor_2.10-2.2.3.jar:2.2.3] >>> at >>> akka.actor.ActorCell$$anonfun$autoReceiveMessage$2.apply(ActorCell.scala:493) >>> ~[akka-actor_2.10-2.2.3.jar:2.2.3] >>> at scala.collection.TraversableLike$WithFilter$$ >>> anonfun$foreach$1.apply(TraversableLike.scala:772) >>> ~[scala-library.jar:na] >>> at scala.collection.Iterator$class.foreach(Iterator.scala:727) >>> ~[scala-library.jar:na] >>> at akka.util.Collections$PartialImmutableValuesIterable >>> $$anon$1.foreach(Collections.scala:27) ~[akka-actor_2.10-2.2.3.jar:2. >>> 2.3] >>> at >>> akka.util.Collections$PartialImmutableValuesIterable.foreach(Collections.scala:52) >>> ~[akka-actor_2.10-2.2.3.jar:2.2.3] >>> at scala.collection.TraversableLike$WithFilter. >>> foreach(TraversableLike.scala:771) ~[scala-library.jar:na] >>> at akka.actor.ActorCell.autoReceiveMessage(ActorCell.scala:493) >>> ~[akka-actor_2.10-2.2.3.jar:2.2.3] >>> at akka.actor.ActorCell.invoke(ActorCell.scala:455) >>> ~[akka-actor_2.10-2.2.3.jar:2.2.3] >>> at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:237) >>> [akka-actor_2.10-2.2.3.jar:2.2.3] >>> at akka.dispatch.Mailbox.run(Mailbox.scala:219) >>> [akka-actor_2.10-2.2.3.jar:2.2.3] >>> at akka.dispatch.ForkJoinExecutorConfigurator$ >>> AkkaForkJoinTask.exec(AbstractDispatcher.scala:386) >>> [akka-actor_2.10-2.2.3.jar:2.2.3] >>> at >>> scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) >>> [scala-library.jar:na] >>> at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue. >>> runTask(ForkJoinPool.java:1339) [scala-library.jar:na] >>> at >>> scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) >>> [scala-library.jar:na] >>> at >>> scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) >>> [scala-library.jar:na] >>> >>> -- >>> >>>>>>>>>> Read the docs: http://akka.io/docs/ >>> >>>>>>>>>> Check the FAQ: http://akka.io/faq/ >>> >>>>>>>>>> Search the archives: https://groups.google.com/ >>> group/akka-user >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "Akka User List" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To post to this group, send email to [email protected]. >>> >>> Visit this group at http://groups.google.com/group/akka-user. >>> For more options, visit https://groups.google.com/groups/opt_out. >>> >> >> >> >> -- >> Cheers, >> √ >> >> * ——————— **Viktor Klang* >> *Chief Architect - **Typesafe <http://www.typesafe.com/>* >> >> Twitter: @viktorklang >> > -- > >>>>>>>>>> Read the docs: http://akka.io/docs/ > >>>>>>>>>> Check the FAQ: http://akka.io/faq/ > >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user > --- > You received this message because you are subscribed to the Google Groups > "Akka User List" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/akka-user. > For more options, visit https://groups.google.com/groups/opt_out. > -- Cheers, √ *———————**Viktor Klang* *Chief Architect - **Typesafe <http://www.typesafe.com/>* Twitter: @viktorklang -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: http://akka.io/faq/ >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user --- You received this message because you are subscribed to the Google Groups "Akka User List" group. 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