akka.cluster

Class NoDowning

java.lang.Object

akka.cluster.DowningProvider

akka.cluster.NoDowning

public final class NoDowning
extends DowningProvider

Default downing provider used when no provider is configured and 'auto-down-unreachable-after' is not enabled.

Constructor Summary

Constructors

Constructor and Description
NoDowning(ActorSystem system)

Method Summary

Modifier and Type	Method and 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 akka.cluster.DowningProvider

load

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NoDowning

public NoDowning(ActorSystem system)

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)