Strange exception using distributed data

[tesgu]

Hi guys, we are using Akka.DistributedData 1.4.16

When load is high, the system starts to throw the following exception and the distributed data stops finding items.
We are using an ORDictionary<string, POC>

Any clue would be much appreciated.

System.InvalidCastException: Unable to cast object of type 'NoDelta' to type 'DeltaGroup[System.String,Payvision.ThreeDS.Processor.DistributedCache.Domain.TransactionState]'.
at Akka.DistributedData.ORDictionary2.DeltaGroup.Merge(IReplicatedData other) at Akka.DistributedData.DeltaPropagationSelector.CollectPropagations() at Akka.DistributedData.Replicator.ReceiveDeltaPropagationTick() at lambda_method(Closure , Object , Action1 , Action1 , Action1 , Action1 , Action1 , Action1 , Action1 , Action1 , Action1 , Action1 , Action1 , Action1 , Action1 , Action1 , Object[] ) at Akka.Tools.MatchHandler.PartialHandlerArgumentsCapture16.Handle(T value)
at Akka.Actor.ReceiveActor.ExecutePartialMessageHandler(Object message, PartialAction`1 partialAction)
at Akka.Actor.UntypedActor.Receive(Object message)
at Akka.Actor.ActorBase.AroundReceive(Receive receive, Object message)
at Akka.Actor.ActorCell.ReceiveMessage(Object message)
at Akka.Actor.ActorCell.Invoke(Envelope envelope)

[Aaronontheweb]

@Arkatufus could you take a look at this?

[Arkatufus]

@tesgu I'm looking into the problem right now

[Arkatufus]

@tesgu I did a possible fix to this (see merged PR link above) but since we don't have any unit test to confirm that this bug is fixed, I'm going to leave this issue open. The fix should be rolled out in the next version and you can re-test to see if the bug is fixed or not, or you might be able to use the nightly build.

@Aaronontheweb do we still have nightly build nuget repo?

[Arkatufus]

Well, the answer is yes.
https://getakka.net/community/getting-access-to-nightly-builds.html

[Aaronontheweb]

@tesgu definitely give the nightly build a try and let us know if it resolves your issue

[tesgu]

Hi guys

Good news @Aaronontheweb and @Arkatufus: it seems the issue is solved!!

Tested using Akka.DistributedData 1.4.17-beta637505857887316375. No exception thrown and the ORDictionary is working as expected.

Thanks a lot for the quick fix!! ;)

[Aaronontheweb]

Nice work @Arkatufus

Happy to do it @tesgu - we will release 1.4.17 this week.

[tesgu]

Great! Looking forward for the release @Aaronontheweb .