825d90bf63
* The scenario was (probably) that a node was restarted with same host:port and then didn't join the same cluster. The DData Replicator in the original cluster would continue sending messages to the new incarnation resulting in false removals. * The fix is that DData Replicator includes the system uid of the sending or target system in messages and if recipient gets a message that is from/to unknown it will discard it and thereby not spreading information across different clusters. * Reproduced in ClusterReceptionistSpec * Much hardening of other things in ClusterReceptionistSpec * There are also some improvements to ClusterReceptionist to not leak Listing with refs of removed nodes. * use ClusterShuttingDown * The reason for using sender system uid instead of target uid in messages like Read and Write is that then the optimization for sending same message to many destinations can remain. |
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Akka 
We believe that writing correct concurrent & distributed, resilient and elastic applications is too hard. Most of the time it's because we are using the wrong tools and the wrong level of abstraction.
Akka is here to change that.
Using the Actor Model we raise the abstraction level and provide a better platform to build correct concurrent and scalable applications. This model is a perfect match for the principles laid out in the Reactive Manifesto.
For resilience, we adopt the "Let it crash" model which the telecom industry has used with great success to build applications that self-heal and systems that never stop.
Actors also provide the abstraction for transparent distribution and the basis for truly scalable and fault-tolerant applications.
Learn more at akka.io.
Reference Documentation
The reference documentation is available at doc.akka.io, for Scala and Java.
Community
You can join these groups and chats to discuss and ask Akka related questions:
- Forums: discuss.akka.io
- Chat room about using Akka:
- Issue tracker:
In addition to that, you may enjoy following:
- The news section of the page, which is updated whenever a new version is released
- The Akka Team Blog
- @akkateam on Twitter
- Questions tagged #akka on StackOverflow
- Projects built with Akka:
Contributing
Contributions are very welcome!
If you see an issue that you'd like to see fixed, the best way to make it happen is to help out by submitting a pull request implementing it.
Refer to the CONTRIBUTING.md file for more details about the workflow, and general hints on how to prepare your pull request. You can also ask for clarifications or guidance in GitHub issues directly, or in the akka/dev chat if a more real time communication would be of benefit.
A chat room is available for all questions related to developing and contributing to Akka:
License
Akka is Open Source and available under the Apache 2 License.