Package akka.cluster

Class NoDowning


  • public final class NoDowning
    extends DowningProvider
    Default downing provider used when no provider is configured and 'auto-down-unreachable-after' is not enabled.
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      scala.Option<Props> downingActorProps()
      If a props is returned it is created as a child of the core cluster daemon on cluster startup.
      scala.concurrent.duration.FiniteDuration downRemovalMargin()
      Time margin after which shards or singletons that belonged to a downed/removed partition are created in surviving partition.
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

    • Method Detail

      • downRemovalMargin

        public scala.concurrent.duration.FiniteDuration downRemovalMargin()
        Description copied from class: DowningProvider
        Time margin after which shards or singletons that belonged to a downed/removed partition are created in surviving partition. The purpose of this margin is that in case of a network partition the persistent actors in the non-surviving partitions must be stopped before corresponding persistent actors are started somewhere else. This is useful if you implement downing strategies that handle network partitions, e.g. by keeping the larger side of the partition and shutting down the smaller side.
        Specified by:
        downRemovalMargin in class DowningProvider
        Returns:
        (undocumented)
      • downingActorProps

        public scala.Option<Props> downingActorProps()
        Description copied from class: DowningProvider
        If a props is returned it is created as a child of the core cluster daemon on cluster startup. It should then handle downing using the regular Cluster APIs. The actor will run on the same dispatcher as the cluster actor if dispatcher not configured.

        May throw an exception which will then immediately lead to Cluster stopping, as the downing provider is vital to a working cluster.

        Specified by:
        downingActorProps in class DowningProvider
        Returns:
        (undocumented)