Dear hakkers,

We—the Akka committers—are pleased to be able to announce the availability of 
Akka 2.2.4. This is the third maintenance release of the 2.2 branch, containing 
documentation improvements and fixing several issues including:

(remote, cluster) increased numerical precision of PhiAccrualFailureDetector, 
contributed by Rob David
(actor) fixed a regression in Actor overhead concerning both size and creation 
effort
(remote) added the ability to communicate with restarted systems before the 
quarantine period has elapsed
(remote) fixed remote lifecycle logging so that it can be switched off 
completely
documentation fixes

This release is backwards binary compatible with version 2.2.0, 2.2.1 and 
2.2.3, which means that the new JARs are a drop-in replacement for the old one 
(but not the other way around) as long as your build does not enable the 
inliner (Scala-only restriction). Always make sure to use at least the latest 
version required by any of your project’s dependencies.

Migrating from Older Releases

When migrating an existing project from Akka 2.1.x please have a look at our 
migration guide: 
http://doc.akka.io/docs/akka/2.2.4/project/migration-guide-2.1.x-2.2.x.html

IMPORTANT NOTICE

The artifacts comprising this release have been published to 
https://oss.sonatype.org/content/repositories/releases/ and also to Maven 
Central. In addition, we adopted the SBT standard of encoding the Scala binary 
version in the artifact name, i.e. the core actor package’s artifactId is 
“akka-actor_2.10”.

Links of Interest

Website: http://akka.io
Binary distribution: http://akka.io/downloads/
Documentation:
http://doc.akka.io/docs/akka/2.2.4/
http://doc.akka.io/api/akka/2.2.4/
http://doc.akka.io/japi/akka/2.2.4/
Issue tracker: http://www.assembla.com/spaces/akka/
Mailing list: https://groups.google.com/group/akka-user

2.2.4 compared to 2.2.3:
8 tickets closed
40 files changed, 952 insertions(+), 202 deletions(-)
… and a total of 5 committers!
Fixed Tickets:

3633 FAILED: SystemMessageDeliveryNoPassive
3706 Loss of floating point precision in PhiAccrualFailureDetector
3720 Actor creation size and speed regression
3730 Intermittent ActorSelection/Identify issue
3784 Akka Scala Docs missing SquarerImpl for Typed Actor
3787 akka.remote.log-remote-lifecycle-events = off doesn't make the 
EndpointWriter shut up
3896 gracefulStop method signature changed from Akka 2.1.4 to 2.2.0
3904 do not leak private repositories in pom.xml
Credits:

commits added removed
    5     395      81  Endre Sándor Varga
    3     467      53  Björn Antonsson
    3      14       4  Roland Kuhn
    1       8      21  Viktor Klang
    1      38      13  Rob David
Happy hakking!


-- 
Björn Antonsson
Typesafe – Reactive Apps on the JVM
twitter: @bantonsson

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