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!clu #3683 Change cluster heartbeat to req/rsp protocol

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* The previous one-way hearbeat was elegant, but comlicated to
  understand and without giving much extra value compared to this approach.
* The previous one-way heartbeat have some kind of bug when joining
  several (10-20) nodes at approximately the same time (but not exactly
  the same time) with a false failure detection triggered by the extra heartbeat,
  which would not heal.
* This ping-pong approach will increase network traffic slightly, but heartbeat
  messages are small and each node is limited to monitor (default) 5 peers.
This commit is contained in:
Patrik Nordwall 2013-11-07 13:52:08 +01:00
parent 05f402c236
commit eaad7ecf7e
15 changed files with 350 additions and 439 deletions
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2
akka-cluster/src/main/scala/akka/cluster/ClusterDaemon.scala
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@ -113,8 +113,6 @@ private[cluster] object InternalClusterAction {
case object GossipSpeedupTick extends Tick
case object HeartbeatTick extends Tick
case object ReapUnreachableTick extends Tick
case object MetricsTick extends Tick