Snapshot sequence number is not increased when snapshoting

[codingvlad]

Hello. I have a project that for testing uses the akka-persistence-inmemory. The problem is that the snapshot sequence number is not increased. I cannot publish the code since is private but I just create a simple PersistentActor and call the saveSnapshot(...) 3 times. I have another actor recovering with the same persistence ID and it gets the latest snapshot but the sequence number is 0 and it should be 3. I checked the log and I do get 3 SaveSnapshotSuccess(---) messages but they all have the same sequence number. Anyone know why?

[dnvriend]

Thanks, will go to the backlog.

[codingvlad]

Hello Dennis, About this issue. I do not think it is a bug. It is not well documented. The persistence number is increased as soon as you persist in something before. So, if you snapshot without having persisted you end up having snapshot a seqnr 0. If you do another snapshot then again that snapshot is at 0. Only persistence increases the number. If this is the intended behaviour then everything is fine and you can close the bug report but maybe add the documentation. If not, I plan to add a pull request to Akka itself and explain the behaviour in detail since I feel more than one will have trouble getting their head around this persistence seqnr. Best regards, Vlad Filip