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March 05


Akka 2.2.5 Released!

Dear hakkers,

We—the Akka committers—are pleased to be able to announce the availability of Akka 2.2.5. This is the fourth maintenance release of the 2.2 branch, and was sponsored by Manhattan Associates, Inc.

It includes a fix concerning filebased durable mailboxes, which might have grown indefinitely on some operating systems.

This release is backwards binary compatible with version 2.2.0, 2.2.1, 2.2.3 and 2.2.4, 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:


The artifacts comprising this release have been published to 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”.

2.2.5 compared to 2.2.4:

  • 1 tickets closed
  • 1 file changed, 7 insertions(+), 5 deletions(-)
  • … and a total of 1 committers!

Fixed Tickets:

  • 16657 On some operating systems (deprecated) FileBasedMailbox keeps growing ignoring rollover


commits added removed
    1       7       5  Konrad 'ktoso' Malawski

Happy hakking!