does classpath order matter when running akka application

[Mohnish Kodnani]

Hi,
I am using gradle to build an akka application.
All the dependencies are in the lib folder. There is a startup script which lies in the bin folder.
I am using akka-clustering which internally depends on akka-remote which depends on netty.
When I run the application I get the following error.
java.lang.NoSuchMethodError: org.jboss.netty.channel.socket.nio.NioWorkerPool.<init>(Ljava/util/concurrent/Executor;I)V
        at akka.remote.transport.netty.NettyTransport.<init>(NettyTransport.scala:283)
        at akka.remote.transport.netty.NettyTransport.<init>(NettyTransport.scala:240)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
        at akka.actor.ReflectiveDynamicAccess$$anonfun$createInstanceFor$2.apply(DynamicAccess.scala:78)
        at scala.util.Try$.apply(Try.scala:161)
        at akka.actor.ReflectiveDynamicAccess.createInstanceFor(DynamicAccess.scala:73)


Now, when I put netty-3.8.0.Final.jar before the akka-remote jar in the classpath this error goes away.

Does the ordering of jars matter in the classpath  ?

akka-actor version 2.3.2, akka-cluster : 2.3.3

-Mohnish

[Martynas Mickevičius]

Hi Mohnish,

can you try running latest akka 2.3.4 and have all akka artifacts of the same version?

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Martynas Mickevičius

Typesafe – Reactive Apps on the JVM