Hi Bjorn, My answers are in comments.
Thanks On Tuesday, April 8, 2014 9:31:00 AM UTC+1, Björn Antonsson wrote: > > Hi Ryadh, > > This doesn't answer any of my questions, so I'll repeat them with some > additions. > > - Do the machines have a large number of cores? > > *Yes, 64 cores per machine. 3 machines, 4 tomcat instances on each machine* > > - Do you start multiple actor systems inside the same JVM? > > * No, only 1 actor system per JVM* > > - Have you done custom configuration of the akka I/O dispatchers? > > * Yes:* *akka.actor.provider=akka.cluster.ClusterActorRefProviderakka.actor.creation-timeout=20sakka.cluster.seed-nodes=akka.tcp://system@app1:2551,akka.tcp://system@app2:2551,akka.tcp://system@app3:2551akka.cluster.roles=orchestrate,eventProcess,extractProcess,extractSingletonakka.cluster.seed-node-timeout=25sakka.cluster.failure-detector.threshold=15.0akka.cluster.failure-detector.acceptable-heartbeat-pause=25sakka.actor.default-dispatcher.executor=fork-join-executorakka.actor.default-dispatcher.fork-join-executor.parallelism-min=20akka.actor.default-dispatcher.fork-join-executor.parallelism-factor=2akka.actor.default-dispatcher.fork-join-executor.parallelism-max=40* > > - The number of threads that you are seeing is that from a single > Tomcat instance? > > *Yes * > B/ > > On 8 April 2014 at 00:06:44, Ryadh khsib ([email protected] <javascript:>) > wrote: > > > > On Friday, March 21, 2014 5:37:11 PM UTC, Ryadh khsib wrote: >> >> Hi all, >> >> >> We are getting intermittently a "[actor name [joinSeedNodeProcess] is not >> unique!]" exception at the akka Cluster system start up. >> >> The production setup is a akka Singleton cluster deployed on 12 tomcats >> across 3 physical machines (4 nodes on every machine). >> >> >> Do you have any idea how we could fix this? >> >> >> Many thanks, >> >> Ryadh >> >> >> Exception trace: >> >> >> ERROR akka.cluster.ClusterCoreSupervisor 2014-03-21 08:59:28,092 >> [build=null] [System-akka.actor.default-dispatcher-8] - Cluster node >> [akka.tcp://System@host084:2551] crashed, [actor name [joinSeedNodeProcess] >> is not unique!] - shutting down... >> >> [exceptionClass=akka.actor.dungeon.ChildrenContainer$NormalChildrenContainer, >> exceptionMethod=reserve, exceptionID=74a5d13f, ] >> akka.actor.InvalidActorNameException: actor name [joinSeedNodeProcess] is >> not unique! >> at >> akka.actor.dungeon.ChildrenContainer$NormalChildrenContainer.reserve(ChildrenContainer.scala:130) >> ~[akka-actor_2.10-2.2.0.jar:2.2.0] >> at akka.actor.dungeon.Children$class.reserveChild(Children.scala:77) >> ~[akka-actor_2.10-2.2.0.jar:2.2.0] >> at akka.actor.ActorCell.reserveChild(ActorCell.scala:338) >> [akka-actor_2.10-2.2.0.jar:2.2.0] >> at akka.actor.dungeon.Children$class.makeChild(Children.scala:186) >> ~[akka-actor_2.10-2.2.0.jar:2.2.0] >> at akka.actor.dungeon.Children$class.actorOf(Children.scala:38) >> ~[akka-actor_2.10-2.2.0.jar:2.2.0] >> at akka.actor.ActorCell.actorOf(ActorCell.scala:338) >> [akka-actor_2.10-2.2.0.jar:2.2.0] >> at >> akka.cluster.ClusterCoreDaemon.joinSeedNodes(ClusterDaemon.scala:361) >> ~[akka-cluster_2.10-2.2.0.jar:na] >> at >> akka.cluster.ClusterCoreDaemon$$anonfun$tryingToJoin$1.applyOrElse(ClusterDaemon.scala:302) >> ~[akka-cluster_2.10-2.2.0.jar:na] >> at akka.actor.ActorCell.receiveMessage(ActorCell.scala:498) >> [akka-actor_2.10-2.2.0.jar:2.2.0] >> at akka.actor.ActorCell.invoke(ActorCell.scala:456) >> [akka-actor_2.10-2.2.0.jar:2.2.0] >> at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:237) >> [akka-actor_2.10-2.2.0.jar:2.2.0] >> at akka.dispatch.Mailbox.run(Mailbox.scala:219) >> [akka-actor_2.10-2.2.0.jar:2.2.0] >> at >> akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:386) >> [akka-actor_2.10-2.2.0.jar:2.2.0] >> at >> scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) >> [scala-library-2.10.2.jar:na] >> at >> scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) >> [scala-library-2.10.2.jar:na] >> at >> scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) >> [scala-library-2.10.2.jar:na] >> at >> scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) >> [scala-library-2.10.2.jar:na] >> >> ERROR akka.actor.OneForOneStrategy 2014-03-21 08:59:28,093 [build=null] >> [System-akka.actor.default-dispatcher-8] - actor name [joinSeedNodeProcess] >> is not unique! >> >> [exceptionClass=akka.actor.dungeon.ChildrenContainer$NormalChildrenContainer, >> exceptionMethod=reserve, exceptionID=74a5d13f, ] >> akka.actor.InvalidActorNameException: actor name [joinSeedNodeProcess] is >> not unique! >> at >> akka.actor.dungeon.ChildrenContainer$NormalChildrenContainer.reserve(ChildrenContainer.scala:130) >> ~[akka-actor_2.10-2.2.0.jar:2.2.0] >> at akka.actor.dungeon.Children$class.reserveChild(Children.scala:77) >> ~[akka-actor_2.10-2.2.0.jar:2.2.0] >> at akka.actor.ActorCell.reserveChild(ActorCell.scala:338) >> [akka-actor_2.10-2.2.0.jar:2.2.0] >> at akka.actor.dungeon.Children$class.makeChild(Children.scala:186) >> ~[akka-actor_2.10-2.2.0.jar:2.2.0] >> at akka.actor.dungeon.Children$class.actorOf(Children.scala:38) >> ~[akka-actor_2.10-2.2.0.jar:2.2.0] >> at akka.actor.ActorCell.actorOf(ActorCell.scala:338) >> [akka-actor_2.10-2.2.0.jar:2.2.0] >> at >> akka.cluster.ClusterCoreDaemon.joinSeedNodes(ClusterDaemon.scala:361) >> ~[akka-cluster_2.10-2.2.0.jar:na] >> at >> akka.cluster.ClusterCoreDaemon$$anonfun$tryingToJoin$1.applyOrElse(ClusterDaemon.scala:302) >> ~[akka-cluster_2.10-2.2.0.jar:na] >> at akka.actor.ActorCell.receiveMessage(ActorCell.scala:498) >> [akka-actor_2.10-2.2.0.jar:2.2.0] >> at akka.actor.ActorCell.invoke(ActorCell.scala:456) >> [akka-actor_2.10-2.2.0.jar:2.2.0] >> at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:237) >> [akka-actor_2.10-2.2.0.jar:2.2.0] >> at akka.dispatch.Mailbox.run(Mailbox.scala:219) >> [akka-actor_2.10-2.2.0.jar:2.2.0] >> at >> akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:386) >> [akka-actor_2.10-2.2.0.jar:2.2.0] >> at >> scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) >> [scala-library-2.10.2.jar:na] >> at >> scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) >> [scala-library-2.10.2.jar:na] >> at >> scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) >> [scala-library-2.10.2.jar:na] >> at >> scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) >> [scala-library-2.10.2.jar:na] >> >> -- > >>>>>>>>>> Read the docs: http://akka.io/docs/ > >>>>>>>>>> Check the FAQ: > http://doc.akka.io/docs/akka/current/additional/faq.html > >>>>>>>>>> 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] <javascript:>. > To post to this group, send email to [email protected]<javascript:> > . > Visit this group at http://groups.google.com/group/akka-user. > For more options, visit https://groups.google.com/d/optout. > > -- > *Björn Antonsson* > Typesafe <http://typesafe.com/> – Reactive <http://reactivemanifesto.org/> > Apps > on the JVM > twitter: @bantonsson <http://twitter.com/#!/bantonsson> > > JOIN US. 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