>
> 1. Despite using a router to distribute work to the
> workers<https://github.com/Synesso/scratch-akka-cluster-singleton/blob/distributed/src/main/scala/sample/cluster/simple/TheFatController.scala#L24>,
>
> all work continues to happen on the same node (even when max workers is
> reached for that node).
>
This can be caused by the known
regression<https://www.assembla.com/spaces/akka/simple_planner#/ticket:3967>in
akka 2.3.1. In that case the second node is unable to join the cluster,
so all work happens on the first node. I have tried your example code with
akka 2.3.0 and workers are being distributed between two or more nodes.
2. Despite stopping the
workers<https://github.com/Synesso/scratch-akka-cluster-singleton/blob/distributed/src/main/scala/sample/cluster/simple/Worker.scala#L11>,
> the system is unable to process work once the max number of
> workers<https://github.com/Synesso/scratch-akka-cluster-singleton/blob/distributed/src/main/scala/sample/cluster/simple/TheFatController.scala#L29>is
> hit.
> I hope someone can help me as I can't see what I've done wrong.
>
I see that you are stopping workers with a PoisonPill message. This stops
the worker and its mailbox. In this case router is not going to restart
workers. However if you use Kill message to kill worker, then
ActorKilledException is thrown in the worker which kills the worker but
also notifies the router. Router will act (escalate, restart, ...) to this
exception according to its supervision strategy.
Martynas Mickevičius
Typesafe – Reactive Apps on the JVM
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