akka/akka — pull request #2012 by patriknw (2014-02-14 10:58:18+00:00)
Title: =clu #3871 Harden SurviveNetworkInstabilitySpec

* The problem was that the one-way blackhole caused spreading of
unreachable observations of other nodes from second node, and
that caused the leader to be able to remove the downed second
node
* Changed to two-way blackhole and using barrier instead of scheduled
event to trigger the exceptions when the blackhole was in place
* We should investigate if unreachable observations from downed node
can be excluded in the convergence check. Created separate ticket for
that 3875.