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Fix NPE due to initialization order, see #2473

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Patrik Nordwall 2012-09-06 10:04:52 +02:00
parent 6e4b0dc3de
commit 806b5efcdf
1 changed files with 3 additions and 1 deletions
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4
akka-cluster/src/main/scala/akka/cluster/Cluster.scala
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@ -149,7 +149,9 @@ class Cluster(val system: ExtendedActorSystem, val failureDetector: FailureDetec
/**
* INTERNAL API
*/
private[cluster] val clusterCore: ActorRef = {
private[cluster] lazy val clusterCore: ActorRef = {
// this val must be lazy for correct initialization order,
// ClusterDaemon children may use for example subscribe before we get the GetClusterCoreRef reply
implicit val timeout = system.settings.CreationTimeout
Await.result((clusterDaemons ? InternalClusterAction.GetClusterCoreRef).mapTo[ActorRef], timeout.duration)
}