Akka issue

gistfile1.txt

[INFO] [05/11/2015 10:06:38.239] [ClusterSystem-akka.actor.default-dispatcher-2] [akka.cluster.Cluster(akka://ClusterSystem)] Cluster Node [akka.tcp://ClusterSystem@127.0.0.1:2551] - Leader is moving node [akka.tcp://ClusterSystem@127.0.0.1:2555] to [Up]
[INFO] [05/11/2015 10:06:38.239] [ClusterSystem-akka.actor.default-dispatcher-16] [akka.tcp://ClusterSystem@127.0.0.1:2551/user/clusterListener] Member is Up: akka.tcp://ClusterSystem@127.0.0.1:2555
[WARN] [05/11/2015 10:06:52.329] [ClusterSystem-akka.remote.default-remote-dispatcher-35] [akka.tcp://ClusterSystem@127.0.0.1:2551/system/endpointManager/reliableEndpointWriter-akka.tcp%3A%2F%2FClusterSystem%40127.0.0.1%3A2555-1] Association with remote system [akka.tcp://ClusterSystem@127.0.0.1:2555] has failed, address is now gated for [5000] ms. Reason: [Disassociated] 
[INFO] [05/11/2015 10:06:53.236] [ClusterSystem-akka.actor.default-dispatcher-16] [akka://ClusterSystem/deadLetters] Message [akka.cluster.GossipStatus] from Actor[akka://ClusterSystem/system/cluster/core/daemon#1997012984] to Actor[akka://ClusterSystem/deadLetters] was not delivered. [6] dead letters encountered. This logging can be turned off or adjusted with configuration settings 'akka.log-dead-letters' and 'akka.log-dead-letters-during-shutdown'.
[INFO] [05/11/2015 10:06:53.276] [ClusterSystem-akka.actor.default-dispatcher-3] [akka://ClusterSystem/deadLetters] Message [akka.cluster.ClusterHeartbeatSender$Heartbeat] from Actor[akka://ClusterSystem/system/cluster/core/daemon/heartbeatSender#1604543912] to Actor[akka://ClusterSystem/deadLetters] was not delivered. [7] dead letters encountered. This logging can be turned off or adjusted with configuration settings 'akka.log-dead-letters' and 'akka.log-dead-letters-during-shutdown'.
[INFO] [05/11/2015 10:06:54.233] [ClusterSystem-akka.actor.default-dispatcher-16] [akka://ClusterSystem/deadLetters] Message [akka.cluster.GossipStatus] from Actor[akka://ClusterSystem/system/cluster/core/daemon#1997012984] to Actor[akka://ClusterSystem/deadLetters] was not delivered. [8] dead letters encountered. This logging can be turned off or adjusted with configuration settings 'akka.log-dead-letters' and 'akka.log-dead-letters-during-shutdown'.
[INFO] [05/11/2015 10:06:54.273] [ClusterSystem-akka.actor.default-dispatcher-17] [akka://ClusterSystem/deadLetters] Message [akka.cluster.ClusterHeartbeatSender$Heartbeat] from Actor[akka://ClusterSystem/system/cluster/core/daemon/heartbeatSender#1604543912] to Actor[akka://ClusterSystem/deadLetters] was not delivered. [9] dead letters encountered. This logging can be turned off or adjusted with configuration settings 'akka.log-dead-letters' and 'akka.log-dead-letters-during-shutdown'.
[INFO] [05/11/2015 10:06:55.237] [ClusterSystem-akka.actor.default-dispatcher-22] [akka://ClusterSystem/deadLetters] Message [akka.cluster.GossipStatus] from Actor[akka://ClusterSystem/system/cluster/core/daemon#1997012984] to Actor[akka://ClusterSystem/deadLetters] was not delivered. [10] dead letters encountered, no more dead letters will be logged. This logging can be turned off or adjusted with configuration settings 'akka.log-dead-letters' and 'akka.log-dead-letters-during-shutdown'.
[WARN] [05/11/2015 10:06:57.236] [ClusterSystem-akka.actor.default-dispatcher-22] [akka.tcp://ClusterSystem@127.0.0.1:2551/system/cluster/core/daemon] Cluster Node [akka.tcp://ClusterSystem@127.0.0.1:2551] - Marking node(s) as UNREACHABLE [Member(address = akka.tcp://ClusterSystem@127.0.0.1:2555, status = Up)]
[INFO] [05/11/2015 10:06:57.237] [ClusterSystem-akka.actor.default-dispatcher-15] [akka.tcp://ClusterSystem@127.0.0.1:2551/user/clusterListener] Member detected as unreachable: Member(address = akka.tcp://ClusterSystem@127.0.0.1:2555, status = Up)
[WARN] [05/11/2015 10:06:59.284] [ClusterSystem-akka.remote.default-remote-dispatcher-35] [akka.tcp://ClusterSystem@127.0.0.1:2551/system/endpointManager/reliableEndpointWriter-akka.tcp%3A%2F%2FClusterSystem%40127.0.0.1%3A2555-1] Association with remote system [akka.tcp://ClusterSystem@127.0.0.1:2555] has failed, address is now gated for [5000] ms. Reason: [Association failed with [akka.tcp://ClusterSystem@127.0.0.1:2555]] Caused by: [Connection refused: no further information: /127.0.0.1:2555]
[WARN] [05/11/2015 10:07:06.283] [ClusterSystem-akka.remote.default-remote-dispatcher-36] [akka.tcp://ClusterSystem@127.0.0.1:2551/system/endpointManager/reliableEndpointWriter-akka.tcp%3A%2F%2FClusterSystem%40127.0.0.1%3A2555-1] Association with remote system [akka.tcp://ClusterSystem@127.0.0.1:2555] has failed, address is now gated for [5000] ms. Reason: [Association failed with [akka.tcp://ClusterSystem@127.0.0.1:2555]] Caused by: [Connection refused: no further information: /127.0.0.1:2555]
[INFO] [05/11/2015 10:07:07.254] [ClusterSystem-akka.actor.default-dispatcher-3] [akka.cluster.Cluster(akka://ClusterSystem)] Cluster Node [akka.tcp://ClusterSystem@127.0.0.1:2551] - Leader is auto-downing unreachable node [akka.tcp://ClusterSystem@127.0.0.1:2555]
[INFO] [05/11/2015 10:07:07.255] [ClusterSystem-akka.actor.default-dispatcher-3] [akka.cluster.Cluster(akka://ClusterSystem)] Cluster Node [akka.tcp://ClusterSystem@127.0.0.1:2551] - Marking unreachable node [akka.tcp://ClusterSystem@127.0.0.1:2555] as [Down]
[INFO] [05/11/2015 10:07:08.224] [ClusterSystem-akka.actor.default-dispatcher-2] [akka.cluster.Cluster(akka://ClusterSystem)] Cluster Node [akka.tcp://ClusterSystem@127.0.0.1:2551] - Leader is removing unreachable node [akka.tcp://ClusterSystem@127.0.0.1:2555]
[INFO] [05/11/2015 10:07:08.226] [ClusterSystem-akka.actor.default-dispatcher-22] [akka.tcp://ClusterSystem@127.0.0.1:2551/user/clusterListener] Member is Removed: akka.tcp://ClusterSystem@127.0.0.1:2555 after Down