akka/akka — pull request #1727 by patriknw (2013-09-11 14:36:58+00:00)
Title: !act #3583 Timer based auto-down

* Replace akka.cluster.auto-down config setting with
akka.cluster.auto-down-unreachable-after
* AutoDown actor that keeps track of unreachable members
and performs down from the leader node when they have been
unreachable for the specified duration
* Migration guide