## Package org.apache.cassandra.gms

Interface Summary
FailureDetectorMBean
IEndPointStateChangePublisher: This is implemented by the Gossiper module to publish change events to interested parties.
IEndPointStateChangeSubscriber: This is called by an instance of the IEndPointStateChangePublisher to notify interested parties about changes in the the state associated with any endpoint.
IFailureDetectionEventListener: Implemented by the Gossiper to convict an endpoint based on the PHI calculated by the Failure Detector on the inter-arrival times of the heart beats.
IFailureDetector: An interface that provides an application with the ability to query liveness information of a node in the cluster.
IFailureNotification

Class Summary
ApplicationState: This abstraction represents the state associated with a particular node which an application wants to make available to the rest of the nodes in the cluster.
EndPointState: This abstraction represents both the HeartBeatState and the ApplicationState in an EndPointState instance.
FailureDetector: This FailureDetector is an implementation of the paper titled "The Phi Accrual Failure Detector" by Hayashibara.
GossipDigest: Contains information about a specified list of EndPoints and the largest version of the state they have generated as known by the local endpoint.
GossipDigestAck2VerbHandler
GossipDigestAckVerbHandler
GossipDigestSynVerbHandler
Gossiper: This module is responsible for Gossiping information for the local endpoint.
GossiperJoinVerbHandler
VersionGenerator: A unique version number generator for any state that is generated by the local node.

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