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  1. ,
    Expert tip

    This seems to be a buggy behavior, to solve it, first try permuting the order of your spark and hadoop dependencies. If that doesn't work, try updating akka and checking if the versions of the libraries you're using are compatible.

Solutions on the web

via Stack Overflow by crak
, 1 year ago
(class: org/jboss/netty/channel/socket/nio/NioWorkerPool, method: createWorker signature: (Ljava/util/concurrent/Executor;)Lorg/jboss/netty/channel/socket/nio/AbstractNioWorker;) Wrong return type in function
via huawei.com by Unknown author, 1 year ago
(class: org/jboss/netty/channel/socket/nio/NioWorkerPool, method: createWorker signature: (Ljava/util/concurrent/Executor;)Lorg/jboss/netty/channel/socket/nio/AbstractNioWorker;) Wrong return type in function
via Google Groups by Dima Fadeyev, 2 years ago
(class: org/jboss/netty/channel/socket/nio/NioWorkerPool, method: createWorker signature: (Ljava/util/concurrent/Executor;)Lorg/jboss/netty/channel/socket/nio/AbstractNioWorker;) Wrong return type in function
via GitHub by sbromberger
, 1 year ago
(class: org/jboss/netty/channel/socket/nio/NioWorkerPool, method: createWorker signature: (Ljava/util/concurrent/Executor;)Lorg/jboss/netty/channel/socket/nio/AbstractNioWorker;) Wrong return type in function
via GitHub by ReeceRobinson
, 2 years ago
(class: org/jboss/netty/channel/socket/nio/NioWorkerPool, method: createWorker signature: (Ljava/util/concurrent/Executor;)Lorg/jboss/netty/channel/socket/nio/AbstractNioWorker;) Wrong return type in function
via GitHub by lbustelo
, 2 years ago
(class: org/jboss/netty/channel/socket/nio/NioWorkerPool, method: createWorker signature: (Ljava/util/concurrent/Executor;)Lorg/jboss/netty/channel/socket/nio/AbstractNioWorker;) Wrong return type in function
java.lang.VerifyError: (class: org/jboss/netty/channel/socket/nio/NioWorkerPool, method: createWorker signature: (Ljava/util/concurrent/Executor;)Lorg/jboss/netty/channel/socket/nio/AbstractNioWorker;) Wrong return type in function	at akka.remote.transport.netty.NettyTransport.(NettyTransport.scala:283)	at akka.remote.transport.netty.NettyTransport.(NettyTransport.scala:240)	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)	at java.lang.reflect.Constructor.newInstance(Constructor.java:422)	at akka.actor.ReflectiveDynamicAccess$$anonfun$createInstanceFor$2.apply(DynamicAccess.scala:78)	at scala.util.Try$.apply(Try.scala:192)	at akka.actor.ReflectiveDynamicAccess.createInstanceFor(DynamicAccess.scala:73)	at akka.actor.ReflectiveDynamicAccess$$anonfun$createInstanceFor$3.apply(DynamicAccess.scala:84)	at akka.actor.ReflectiveDynamicAccess$$anonfun$createInstanceFor$3.apply(DynamicAccess.scala:84)	at scala.util.Success.flatMap(Try.scala:231)	at akka.actor.ReflectiveDynamicAccess.createInstanceFor(DynamicAccess.scala:84)	at akka.remote.EndpointManager$$anonfun$9.apply(Remoting.scala:692)	at akka.remote.EndpointManager$$anonfun$9.apply(Remoting.scala:684)	at scala.collection.TraversableLike$WithFilter$$anonfun$map$2.apply(TraversableLike.scala:728)	at scala.collection.Iterator$class.foreach(Iterator.scala:742)	at scala.collection.AbstractIterator.foreach(Iterator.scala:1194)	at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)	at scala.collection.AbstractIterable.foreach(Iterable.scala:54)	at scala.collection.TraversableLike$WithFilter.map(TraversableLike.scala:727)	at akka.remote.EndpointManager.akka$remote$EndpointManager$$listens(Remoting.scala:684)	at akka.remote.EndpointManager$$anonfun$receive$2.applyOrElse(Remoting.scala:492)	at akka.actor.Actor$class.aroundReceive(Actor.scala:465)	at akka.remote.EndpointManager.aroundReceive(Remoting.scala:395)	at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)	at akka.actor.ActorCell.invoke(ActorCell.scala:487)	at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:238)	at akka.dispatch.Mailbox.run(Mailbox.scala:220)	at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:393)