Hi,


I am building an application which uses akka cluster pub-sub and cluster 
client. I am initialising receptionist at every node in the cluster. There 
are some other node which are not part of the cluster which are 
communicating with cluster nodes through cluster client. I am initialising 
cluster client with initial contacts = receptionist at seed nodes.


Every messages that goes into cluster communication extends an 
com.example.akka.message.AbstractMessage. 
This com.example.akka.message.AbstractMessage is configured with 
serialization conf 


"com.example.akka.message.AbstractMessage"= Java


Above parent class is available at classpath and serialisation conf of 
every cluster node.


When I send object of Login request which extends AbstractMessage I get 
exception at receptionists which doesn't have LoginRequest.


Do I need to provide all the pojo definitions at every receptionist nodes 
in the cluster??


java.lang.ClassNotFoundException: com.example.akka.message.LoginRequest

at java.net.URLClassLoader.findClass(URLClassLoader.java:381)

at java.lang.ClassLoader.loadClass(ClassLoader.java:424)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)

at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

at java.lang.Class.forName0(Native Method)

at java.lang.Class.forName(Class.java:348)

at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:626)

at 
akka.util.ClassLoaderObjectInputStream.resolveClass(ClassLoaderObjectInputStream.scala:19)

at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1613)

at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1518)

at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1774)

at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)

at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993)

at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918)

at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)

at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)

at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)

at akka.serialization.JavaSerializer$$anonfun$1.apply(Serializer.scala:136)

at scala.util.DynamicVariable.withValue(DynamicVariable.scala:57)

at akka.serialization.JavaSerializer.fromBinary(Serializer.scala:136)

at 
akka.serialization.Serialization$$anonfun$deserialize$1.apply(Serialization.scala:104)

at scala.util.Try$.apply(Try.scala:161)

at akka.serialization.Serialization.deserialize(Serialization.scala:98)

at 
akka.contrib.pattern.protobuf.DistributedPubSubMessageSerializer.payloadFromProto(DistributedPubSubMessageSerializer.scala:204)

at 
akka.contrib.pattern.protobuf.DistributedPubSubMessageSerializer.sendFromProto(DistributedPubSubMessageSerializer.scala:163)

at 
akka.contrib.pattern.protobuf.DistributedPubSubMessageSerializer.akka$contrib$pattern$protobuf$DistributedPubSubMessageSerializer$$sendFromBinary(DistributedPubSubMessageSerializer.scala:160)

at 
akka.contrib.pattern.protobuf.DistributedPubSubMessageSerializer$$anonfun$3.apply(DistributedPubSubMessageSerializer.scala:41)

at 
akka.contrib.pattern.protobuf.DistributedPubSubMessageSerializer$$anonfun$3.apply(DistributedPubSubMessageSerializer.scala:41)

at 
akka.contrib.pattern.protobuf.DistributedPubSubMessageSerializer.fromBinary(DistributedPubSubMessageSerializer.scala:61)

at 
akka.serialization.Serialization$$anonfun$deserialize$1.apply(Serialization.scala:104)

at scala.util.Try$.apply(Try.scala:161)

at akka.serialization.Serialization.deserialize(Serialization.scala:98)

at akka.remote.MessageSerializer$.deserialize(MessageSerializer.scala:23)

at 
akka.remote.DefaultMessageDispatcher.payload$lzycompute$1(Endpoint.scala:58)

at akka.remote.DefaultMessageDispatcher.payload$1(Endpoint.scala:58)

at akka.remote.DefaultMessageDispatcher.dispatch(Endpoint.scala:76)

at 
akka.remote.EndpointReader$$anonfun$receive$2.applyOrElse(Endpoint.scala:929)

at akka.actor.Actor$class.aroundReceive(Actor.scala:467)

at akka.remote.EndpointActor.aroundReceive(Endpoint.scala:405)

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:397)

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)

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