| Package | Description | 
|---|---|
| com.hazelcast.cluster.impl | |
| com.hazelcast.instance | 
 This package contains Hazelcast Instance functionality. 
 | 
| com.hazelcast.internal.cluster.impl | 
 This package contains the implementation of the cluster functionality. 
 | 
| com.hazelcast.internal.cluster.impl.operations | 
 This package contains operations for the com.hazelcast.cluster.impl package. 
 | 
| Class and Description | 
|---|
| AbstractJoiner | 
| Class and Description | 
|---|
| ClusterServiceImpl | 
| ConfigCheck
 Contains enough information about Hazelcast Config, to do a validation check so that clusters with different configurations
 don't join. 
 | 
| JoinMessage | 
| JoinRequest | 
| MulticastService | 
| SplitBrainJoinMessage
 A  
JoinMessage issued by the master node of a subcluster to the master of another subcluster
 while searching for other clusters for split brain recovery. | 
| Class and Description | 
|---|
| AbstractJoiner | 
| ClusterClockImpl | 
| ClusterHeartbeatManager
 ClusterHeartbeatManager manages the heartbeat sending and receiving
 process of a node. 
 | 
| ClusterJoinManager
 ClusterJoinManager manages member join process. 
 | 
| ClusterServiceImpl | 
| ClusterStateChange
 Wrapper object indicating a change in the cluster state - it may be cluster state change or cluster version change. 
 | 
| ClusterStateManager
 ClusterStateManager stores cluster state and manages cluster state transactions. 
 | 
| ConfigCheck
 Contains enough information about Hazelcast Config, to do a validation check so that clusters with different configurations
 don't join. 
 | 
| JoinMessage | 
| JoinRequest | 
| MulticastListener | 
| MulticastService | 
| SplitBrainJoinMessage
 A  
JoinMessage issued by the master node of a subcluster to the master of another subcluster
 while searching for other clusters for split brain recovery. | 
| Class and Description | 
|---|
| ClusterStateChange
 Wrapper object indicating a change in the cluster state - it may be cluster state change or cluster version change. 
 | 
| JoinMessage | 
| JoinRequest | 
| SplitBrainJoinMessage
 A  
JoinMessage issued by the master node of a subcluster to the master of another subcluster
 while searching for other clusters for split brain recovery. | 
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