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Note what happens if a node sees its self as Down

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Christopher Batey 2018-05-03 11:24:46 +01:00
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akka-docs/src/main/paradox/cluster-usage.md
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@ -211,6 +211,10 @@ can be performed automatically or manually. By default it must be done manually,
It can also be performed programmatically with @scala[`Cluster(system).down(address)`]@java[`Cluster.get(system).down(address)`].
If a node is still running and sees its self as Down it will shutdown. @ref:[Coordinated Shutdown](actors.md#coordinated-shutdown) will automatically
run if `run-coordinated-shutdown-when-down` is set to `on` (the default) however the node will not try
and leave the cluster gracefully so sharding and singleton migration will not occur.
A pre-packaged solution for the downing problem is provided by
[Split Brain Resolver](http://developer.lightbend.com/docs/akka-commercial-addons/current/split-brain-resolver.html),
which is part of the [Lightbend Reactive Platform](http://www.lightbend.com/platform).