Akka.Discovery 1.4.22-beta

• .NETStandard 2.0

  • Akka (>= 1.4.22)

Maintenance Release for Akka.NET 1.4**
Akka.NET v1.4.22 is a fairly large release that includes an assortment of performance and bug fixes.
Performance Fixes**
Akka.NET v1.4.22 includes a _significant_ performance improvement for `Ask<T>`, which now requires 1 internal `await` operation instead of 3:
Before*
|                        Method | Iterations |      Mean |     Error |    StdDev |     Gen 0 | Gen 1 | Gen 2 | Allocated |
|------------------------------ |----------- |----------:|----------:|----------:|----------:|------:|------:|----------:|
| RequestResponseActorSelection |      10000 | 83.313 ms | 0.7553 ms | 0.7065 ms | 4666.6667 |     - |     - |     19 MB |
|          CreateActorSelection |      10000 |  5.572 ms | 0.1066 ms | 0.1140 ms |  953.1250 |     - |     - |      4 MB |
After*
|                        Method | Iterations |      Mean |     Error |    StdDev |     Gen 0 | Gen 1 | Gen 2 | Allocated |
|------------------------------ |----------- |----------:|----------:|----------:|----------:|------:|------:|----------:|
| RequestResponseActorSelection |      10000 | 71.216 ms | 0.9885 ms | 0.9246 ms | 4285.7143 |     - |     - |     17 MB |
|          CreateActorSelection |      10000 |  5.462 ms | 0.0495 ms | 0.0439 ms |  953.1250 |     - |     - |      4 MB |
Bug Fixes and Improvements**
[Akka: Use ranged nuget versioning for Newtonsoft.Json](https://github.com/akkadotnet/akka.net/pull/5099)
[Akka: Pipe of Canceled Tasks](https://github.com/akkadotnet/akka.net/pull/5123)
[Akka: CircuitBreaker's Open state should return a faulted Task instead of throwing](https://github.com/akkadotnet/akka.net/issues/5117)
[Akka.Remote: Can DotNetty socket exception include information about the address?](https://github.com/akkadotnet/akka.net/issues/5130)
[Akka.Remote: log full exception upon deserialization failure](https://github.com/akkadotnet/akka.net/pull/5121)
[Akka.Cluster: SBR fix & update](https://github.com/akkadotnet/akka.net/pull/5147)
[Akka.Streams: Restart Source|Flow|Sink: Configurable stream restart deadline](https://github.com/akkadotnet/akka.net/pull/5122)
[Akka.DistributedData: ddata replicator stops but doesn't look like it can be restarted easily](https://github.com/akkadotnet/akka.net/pull/5145)
[Akka.DistributedData: ddata ReadMajorityPlus and WriteMajorityPlus](https://github.com/akkadotnet/akka.net/pull/5146)
[Akka.DistributedData: DData Max-Delta-Elements may not be fully honoured](https://github.com/akkadotnet/akka.net/issues/5157)
You can [see the full set of changes introduced in Akka.NET v1.4.22 here](https://github.com/akkadotnet/akka.net/milestone/52)
Akka.Cluster.Sharding.RepairTool**
In addition to the work done on Akka.NET itself, we've also created a separate tool for cleaning up any left-over data in the event of an Akka.Cluster.Sharding cluster running with `akka.cluster.sharding.state-store-mode=persistence` was terminated abruptly before it had a chance to cleanup.
We've added documentation to the Akka.NET website that explains how to use this tool here: https://getakka.net/articles/clustering/cluster-sharding.html#cleaning-up-akkapersistence-shard-state
And the tool itself has documentation here: https://github.com/petabridge/Akka.Cluster.Sharding.RepairTool
| COMMITS | LOC+ | LOC- | AUTHOR |
| --- | --- | --- | --- |
| 16 | 1254 | 160 | Gregorius Soedharmo |
| 7 | 104 | 83 | Aaron Stannard |
| 5 | 8 | 8 | dependabot[bot] |
| 4 | 876 | 302 | Ismael Hamed |
| 2 | 3942 | 716 | zbynek001 |
| 2 | 17 | 3 | Andreas Dirnberger |
| 1 | 187 | 2 | andyfurnival |
| 1 | 110 | 5 | Igor Fedchenko |