If you look at the maven repo, you can see its from typesafe only http://mvnrepository.com/artifact/org.spark-project.akka/akka-actor_2.10/2.3.4-spark
For sbt, you can download the sources by adding withSources() like: libraryDependencies += "org.spark-project.akka" % "akka-actor_2.10" % "2.3.4-spark" withSources() withJavadoc() Thanks Best Regards On Wed, Jun 10, 2015 at 11:25 AM, wangtao (A) <wangtao...@huawei.com> wrote: > Hi guys, > > > > I see group id of akka used in spark is “org.spark-project.akka”. What is > its difference with the typesafe one? What is its version? And where can we > get the source code? > > > > Regards. >