Releases · akkadotnet/akka.net

Akka.Cluster Split Brain Resolvers
Split brain resolvers are specialized IDowningProvider implementations that give Akka.Cluster users the ability to automatically down Unreachable cluster nodes in accordance with well-defined partition resolution strategies, namely:

Static quorums;
Keep majority;
Keep oldest; and
Keep-referee.

You can learn more about why you may want to use these and which strategy is right for you by reading our Splint brain resolver documentation.

Akka.Cluster WeaklyUp Members
One common problem that occurs in Akka.Cluster is that once a current member of the cluster becomes Unreachable, the leader of the cluster isn't able to allow any new members of the cluster to join until that Unreachable member becomes Reachable again or is removed from the cluster via a Cluster.Down command.

Beginning in Akka.NET 1.3.3, you can allow nodes to still join and participate in the cluster even while other member nodes are unreachable by opting into the WeaklyUp status for members. You can do this by setting the following in your HOCON configuration beginning in Akka.NET v1.3.3:

akka.cluster.allow-weakly-up-members = on

This will allow nodes who have joined the cluster when at least one other member was unreachable to become functioning cluster members with a status of WeaklyUp. If the unreachable members of the cluster are downed or become reachable again, all WeaklyUp nodes will be upgraded to the usual Up status for available cluster members.

Akka.Cluster.Sharding and Akka.Cluster.DistributedData Integration
A new experimental feature we've added in Akka.NET v1.3.3 is the ability to fully decouple Akka.Cluster.Sharding from Akka.Persistence and instead run it on top of Akka.Cluster.DistributedData, our library for creating eventually consistent replicated data structures on top of Akka.Cluster.

Beginning in Akka.NET 1.3.3, you can set the following HOCON configuration option to have the ShardingCoordinator replicate its shard placement state using DData instead of persisting it to storage via Akka.Persistence:

akka.cluster.sharding.state-store-mode = ddata

This setting only affects how Akka.Cluster.Sharding's internal state is managed. If you're using Akka.Persistence with your own entity actors inside Akka.Cluster.Sharding, this change will have no impact on them.

Updates and bugfixes:

You can see the full changeset for Akka.NET 1.3.3 here.

COMMITS	LOC+	LOC-	AUTHOR
17	2094	1389	Marc Piechura
13	5426	2827	Bartosz Sypytkowski
12	444	815	Aaron Stannard
11	346	217	ravengerUA
3	90	28	zbynek001
3	78	84	Maxim Cherednik
2	445	1	Vasily Kirichenko
2	22	11	Ismael Hamed
2	11	9	Nicola Sanitate
1	9	10	mrrd
1	7	2	Richard Dobson
1	33	7	Ivars Auzins
1	30	11	Will
1	3	3	HaniOB
1	11	199	Jon Galloway
1	1	1	Sam Neirinck
1	1	1	Irvin Dominin

Assets 2

21 Oct 01:05

alexvaluyskiy

v1.3.2

74ab3ce

Akka.NET v1.3.2 Stable Release

Streams

Implemented Restart Flow/Source/Sink graph stages (#3090)
Implemented MergePrioritized graph stage (#3110)
Added Streams IO docs (#3109)
Updated Streams Error-Handling article (#3086)
Add MergeHub and BroadcastHub docs (#3108)
Added timeout parameter to Probe.RequestNext and ManualProbe.ExpectNext (#3122)

Other

Enabled Optimize=true in all netstandard1.6 assemblies (#3088)
Fixed Sharding serialization bug (#3087)
Added InternalApi and ApiMayChange annotations (#3101)
Fixed Tcp throws ArgumentNullException, when receiving data on Mono (#3092)
Fixed performance degradation if recovering with big numbers of snaps… (#3138)
Removed dependency on Akka.Tests.Shared.Internals in Akka.Cluster.Testkit (#3131)
When the underlying assertion api allows, don't drop user messages (#3142)

COMMITS	LOC+	LOC-	AUTHOR
9	137	59	Aaron Stannard
8	2713	997	Alex Valuyskiy
3	486	95	Bartosz Sypytkowski
3	12	12	Sebastien Bacquet
2	33	7	ravengerUA
2	184	102	Arjen Smits
1	71	7	Adam Friedman
1	7	4	Sam Neirinck
1	604	481	zbynek001
1	6	6	Kenneth Ito
1	42	3	Lukas Rieger
1	40	2	Joshua Benjamin
1	4	5	derrickcrowne
1	3	2	Mikhail Moussikhine
1	20	0	Arturo Sevilla
1	2	0	Paweł Bańka
1	17	11	planerist
1	1	4	lesscode

You can view the full v1.3.2 change set here.

Assets 2

05 Sep 20:07

heynickc

v1.3.1

2f8f825

Akka.NET v1.3.1 Stable Release

Maintenance Release for Akka.NET 1.3

Updates and bugfixes:

Bugfix: Hyperion NuGet package restore creating duplicate assemblies for the same version inside Akka
Various documentation fixes and updates
Bugfix: issue where data sent via UDP when ByteString payload had buffers with length more than 1, UdpSender only wrote the first part of the buffers and dropped the rest.
Bugfix: Akka.IO.Tcp failed to write some outgoing messages.
Improved support for OSX & Rider
Bugfix: Akka.Persistence support for SerializerWithStringManifest required by Akka.Cluster.Sharding and Akka.Cluster.Tools
- Akka.Persistence.Sqlite and Akka.Persistence.SqlServer were unable to support SerializerWithStringManifest, so using Akka.Cluster.Sharding with Sql plugins would not work.
Bugfix: Akka.Streams generic type parameters of the flow returned from current implementation of Bidiflow's JoinMat method were incorrect.
Bugfix: PersistenceMessageSerializer was failing with the wrong exceptoin when a non-supported type was provided.

Akka.Persistence backwards compability warning:

Akka.Persistence.Sql introduces an additional field to the schema used by Sql-based plugins to allow for the use of SerializerWithStringManifest called serializer_id. It requires any previous Sql schema to be updated to have this field. Details are included in the Akka.Persistence.Sqlite plugin README.md file. Users of the Akka.Persistence.Sqlite plugin must alter their existing databases to add the field serializer_id int (4):

ALTER TABLE {your_event_journal_table_name} ADD COLUMN `serializer_id` INTEGER ( 4 )
ALTER TABLE {your_snapshot_table_name} ADD COLUMN `serializer_id` INTEGER ( 4 )

See the full set of Akka.NET 1.3.1 fixes here.

Assets 2

11 Aug 21:12

Aaronontheweb

v1.3.0

a478c5e

Akka.NET v1.3.0 Stable Release

1.3.0 August 11 2017

Feature Release for Akka.NET
Akka.NET 1.3.0 is a major feature release that introduces the significant changes to Akka.NET and its runtime.

.NET Core and .NET Standard 1.6 Support
This release introduces support for .NET Standard 1.6 for our core libraries and .NET Core 1.1 for the MultiNode Test Runner standalone executable. All packages for Akka.NET are dual-released under both .NET 4.5 and .NET Standard 1.6.

As a side note: Akka.NET on .NET 4.5 is not wire compatible with Akka.NET on .NET Core; this is due to fundamental changes made to the base types in the CLR on .NET Core. It's a common problem facing many different serializers and networking libraries in .NET at the moment. You can use a X-plat serializer we've developed here: #2947 - please comment on that thread if you're considering building hybrid .NET and .NET Core clusters.

Akka.Persistence Released to Market
Akka.Persistence has graduated from beta status to stable modules and its interfaces are now considered to be stable. We'll begin updating all of the Akka.Persistence plugins to stable and to add .NET Standard / .NET 4.5 support to each of them as well following this patch.

DocFx-based Documentation Site
Documentation is now generated using DocFx and compiled from within the Akka.NET project rather than a separate documentation repository.

API Changes
This release does not maintain wire format compatibility with the previous release (v1.2.3) inside Akka.Remote; primarily this is due to having to upgrade from Google Protobuf2 to Protobuf3 in order to add .NET Standard support, but we've also taken the liberty of making other serialization improvements while we're at it. So be advised that during an upgrade from 1.2.* to 1.3.* there will be periods of network disruption between nodes using different versions of the service.

Akka.Remote Performance Improvements
Akka.Remote's throughput has been significantly increased.

See the full set of Akka.NET 1.3.0 fixes here.

COMMITS	LOC+	LOC-	AUTHOR
78	65031	95061	Alex Valuyskiy
64	7109	2670	Marc Piechura
61	2420	6703	Nick Chamberlain
46	2316	10066	Aaron Stannard
31	17284	13592	Bartosz Sypytkowski
25	2527	1124	Gregorius Soedharmo
21	7810	1688	zbynek001
11	1932	2167	Sean Gilliam
9	946	219	Arjen Smits
4	344	6	Lealand Vettleson
4	1644	2210	Arkatufus
3	32	6	Lukas Rieger
3	153	17	Quartus Dev
2	8	11	Paweł Bańka
2	4866	12678	olegz
2	1148	176	Ismael Hamed
1	62	5	Mikhail Kantarovskiy
1	4	2	tstojecki
1	22	2	Maxim Cherednik
1	1	1	Sean Killeen

Assets 2

10 Jul 13:37

Aaronontheweb

v1.2.3

28cff8c

v1.2.3 Stable Release

1.2.3 July 07 2017

Maintenance Release for Akka.NET 1.2

Resolves a bug introduced in Akka.NET 1.2.2 that caused Akka.Remote to not terminate properly under some conditions during ActorSystem.Terminate.

See the full set of Akka.NET 1.2.3 fixes here.

COMMITS	LOC+	LOC-	AUTHOR
3	46	63	Aaron Stannard

Assets 2

28 Jun 20:54

Aaronontheweb

v1.2.2

db88436

Akka.NET v1.2.2 Stable Release

1.2.2 June 28 2017

Maintenance Release for Akka.NET 1.2

Finally, fully resolves issues related to Akka.Cluster nodes not being able to cleanly leave or join a cluster after a period of network instability. Also includes some minor fixes for clustered routers and Akka.Persistence.

See the full set of Akka.NET 1.2.2 fixes here.

COMMITS	LOC+	LOC-	AUTHOR
13	589	52	Aaron Stannard

Assets 2

23 Jun 16:02

Aaronontheweb

v1.2.1

946dfdc

Akka.NET v1.2.1 Stable Release

1.2.1 June 22 2017

Maintenance Release for Akka.NET 1.2

Resolves issues related to Akka.Cluster nodes not being able to cleanly leave or join a cluster after a period of network instability.

See the full set of Akka.NET 1.2.1 fixes here.

COMMITS	LOC+	LOC-	AUTHOR
25	20712	3239	Alex Valuyskiy
7	1966	764	Nick Chamberlain
4	420	345	Aaron Stannard
2	1943	3492	Sean Gilliam
2	104	24	Jaskula Tomasz
1	6	10	Szer
1	20	25	Lealand Vettleson

Assets 2

12 Apr 14:56

Aaronontheweb

v1.2

dccf82b

Akka.NET v1.2 Stable Release

1.2.0 April 11 2017

Feature Release for Akka.NET
Akka.NET 1.2 is a major feature release that introduces the following major changes:

Akka.Remote now uses DotNetty for its transport layer
The biggest change for 1.2 is the removal of Helios 2.0 as the default transport and the introduction of DotNetty. The new DotNetty transport is fully backwards compatible with the Helios 1.4 and 2.* transports, so you should be able to upgrade from any Akka.NET 1.* application to 1.2 without any downtime. All of the helios.tcp HOCON is also supported by the DotNetty transport, so none of that needs to updated for the DotNetty transport to work out of the box.

In addition, the DotNetty transport supports TLS, which can be enabled via the following HOCON:

akka {
  loglevel = DEBUG
  actor {
    provider = Akka.Remote.RemoteActorRefProvider,Akka.Remote
  }
  remote {
    dot-netty.tcp {
      port = 0
      hostname = 127.0.0.1
      enable-ssl = true
      log-transport = true
      ssl {
        suppress-validation = true
        certificate {
          # valid ssl certificate must be installed on both hosts
          path = "<valid certificate path>" 
          password = "<certificate password>"
          # flags is optional: defaults to "default-flag-set" key storage flag
          # other available storage flags:
          #   exportable | machine-key-set | persist-key-set | user-key-set | user-protected
          flags = [ "default-flag-set" ] 
        }
      }
    }
  }
}

See the complete DotNetty transport HOCON here.

Akka.Streams and Akka.Cluster.Tools RTMed
Akka.Streams and Akka.Cluster.Tools have graduated from beta status to stable modules and their interfaces are now considered to be stable.

CoordinatedShutdown
One of the major improvements in Akka.NET 1.2 is the addition of the new CoordinatedShutdown plugin, which is designed to make it easier for nodes that are running Akka.Cluster to automatically exit a cluster gracefully whenever ActorSystem.Terminate is called or when the process the node is running in attempts to exit. CoordinatedShutdown is fully extensible and can be used to schedule custom shutdown operations as part of ActorSystem termination.

Additional Changes
In addition to the above changes, there have been a large number of performance improvements, bug fixes, and documentation improvements made to Akka.NET in 1.2. Read the full list of changes in Akka.NET 1.2 here.

COMMITS	LOC+	LOC-	AUTHOR
21	5173	4585	Alex Valuyskiy
16	4046	1144	Aaron Stannard
12	8591	2984	Sean Gilliam
6	971	1300	Sergey
5	6787	2073	Bartosz Sypytkowski
4	6461	8403	Arjen Smits
3	71	65	Marc Piechura
3	300	24	Nick Chamberlain
2	79	40	Maxim Salamatko
2	305	20	Ismael Hamed
1	136	12	Sergey Kostrukov
1	1015	45	Lukas Rieger
1	1	0	siudeks

Assets 2

23 Jan 18:12

Aaronontheweb

v1.1.3

4234885

Akka.NET v1.1.3 Stable Release

1.1.3 January 22 2017

Maintenance release for Akka.NET v1.1

Akka.NET v1.1.3 features some new libraries and an enormous number of bug fixes.

Akka.DistributedData Beta
First, we've introduced an alpha of a new module intended for use with Akka.Cluster: Akka.DistributedData. The goal of this library is to make it possible to concurrently read and write replicated copies of the same entity across different nodes in the cluster using conflict-free replicated data types, often referred to as "CRDTs." These replicas can eventually be merged together in a fully consistent manner and are excellent choices for applications that require a high level of availability and partition tolerance.

The library is still a bit of a work in progress at the moment, but you are free to use it via the following command:

PS> Install-Package Akka.DistributedData -pre

Akka.Serialization.Wire Deprecated; Replaced with Akka.Serialization.Hyperion
Wire recently changed its license to GPLv3, which is a poor fit for a technology like Akka.NET. Therefore, our default serializer beginning in Akka.NET 1.5 will be Hyperion instead. You can see how to set it up here: http://getakka.net/docs/Serialization#how-to-setup-hyperion-as-default-serializer

Other bug fixes, performance improvements, and changes
You can see the full list of changes in Akka.NET 1.1.3 here.

COMMITS	LOC+	LOC-	AUTHOR
19	878	228	Aaron Stannard
10	41654	3428	Sean Gilliam
5	11983	4543	Marc Piechura
4	37	33	Arjen Smits
4	12742	300	Bartosz Sypytkowski
3	144	74	Max
2	99	8	ZigMeowNyan
2	7	7	zbynek001
2	4	2	Andrey Leskov
2	225	767	Alex Valuyskiy
2	212	8	Gordey Doronin
1	8	499	Sean Farrow
1	5	5	tomanekt
1	4	2	Andrew Young
1	3	2	boriskreminskimoldev
1	28	3	Roman Eisendle
1	24	36	Maxim Salamatko
1	2	2	Jeff
1	190	38	Sergey
1	15	9	voltcode
1	12	2	Alexander Pantyukhin
1	107	0	Mikhail Kantarovskiy
1	101	0	derrickcrowne

Assets 2

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Streams

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