NullReferenceException in Akka.Persistence.Serialization.MessageSerializer.PersistentPayloadToProto

[LukeTillman]

I'm trying to run tests after Akka.Persistence.Cassandra was upgraded to use Akka 1.0.4 and I'm consistently getting a NRE like this:

System.NullReferenceException was unhandled by user code
  HResult=-2147467261
  Message=Object reference not set to an instance of an object.
  Source=Akka.Persistence
  StackTrace:
       at Akka.Persistence.Serialization.MessageSerializer.PersistentPayloadToProto(Object payload)
       at Akka.Persistence.Serialization.MessageSerializer.PersistentToProto(IPersistentRepresentation p)
       at Akka.Persistence.Serialization.MessageSerializer.ToBinary(Object obj)
       at Akka.Persistence.Cassandra.Journal.CassandraJournal.Serialize(IPersistentRepresentation message) in d:\DataStax\Akka.Persistence.Cassandra\src\Akka.Persistence.Cassandra\Journal\CassandraJournal.cs:line 361
       at Akka.Persistence.Cassandra.Journal.CassandraJournal.WriteConfigurationValue[T](String key, T value) in d:\DataStax\Akka.Persistence.Cassandra\src\Akka.Persistence.Cassandra\Journal\CassandraJournal.cs:line 349
       at Akka.Persistence.Cassandra.Journal.CassandraJournal.PreStart() in d:\DataStax\Akka.Persistence.Cassandra\src\Akka.Persistence.Cassandra\Journal\CassandraJournal.cs:line 85
       at Akka.Actor.ActorBase.AroundPreStart()
       at Akka.Actor.ActorCell.<>c__DisplayClass4c.<Create>b__4b()
       at Akka.Actor.ActorCell.UseThreadContext(Action action)
       at Akka.Actor.ActorCell.Create(Exception failure)
  InnerException: 

Looks like it's coming from this line here:

https://github.com/akkadotnet/akka.net/blob/dev/src/core/Akka.Persistence/Serialization/MessageSerializer.cs#L140

When TransportInformation is null. I'm guessing fb03e9d may have introduced the issue. Not sure if fixing this is as simple as just adding a null check on TransportInformation before calling the Address property or if that property shouldn't be null in this case indicating some other bug.

[Aaronontheweb]

cc @Horusiath @rogeralsing any ideas why this was dependent on TransportInformation in the first place? Specific to this plugin to in general across Akka.Persistence?

[Horusiath]

As I remember, after a short discussion with Typesafe team they pointed us out, that things like actor refs and paths that are stored, may be recovered from persistence backend on the different machine, that they were saved on, so their base paths may be changed.

[rogeralsing]

Is this still an issue? or did trbngr@3df119f fix it?

[Horusiath]

Closing that one. No updates in the last 9 months.