We are using Akka 2.3.5 via Java. We have had a few rare reports of
akka-remoting communication failing with ResendUnfulfillableException.
When this happens, the log spews a lot of error messages as shown below,
and requires a restart of the node to resolve. Due to the rarity of the
issue, I doubt we'd be able to find a reproduction. Are there any known
issues resolved in later versions (2.3.6 - 2.3.8) which could account for
this problem? It would be nice to know before upgrading whether it has any
chance of fixing the issue.
ERROR Remoting - Error encountered while processing system message
acknowledgement [] ACK[11, {4, 6, 7, 3, 5, 8, 9, 2}]
akka.remote.transport.Transport$InvalidAssociationException: Error
encountered while processing system message acknowledgement [] ACK[11, {4,
6, 7, 3, 5, 8, 9, 2}]
Caused by: akka.remote.ResendUnfulfillableException: Unable to fulfill
resend request since negatively acknowledged payload is no longer in
buffer. The resend states between two systems are compromised and cannot be
recovered.
at akka.remote.AckedSendBuffer.acknowledge(AckedDelivery.scala:103)
at
akka.remote.ReliableDeliverySupervisor$$anonfun$receive$1.applyOrElse(Endpoint.scala:288)
at akka.actor.Actor$class.aroundReceive(Actor.scala:465)
at akka.remote.ReliableDeliverySupervisor.aroundReceive(Endpoint.scala:185)
at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)
at akka.actor.ActorCell.invoke(ActorCell.scala:487)
at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:238)
at akka.dispatch.Mailbox.run(Mailbox.scala:220)
at
akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:393)
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at
scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at
scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
Thanks in advance,
Jim
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