See: Description
| Class | Description | 
|---|---|
| AssignPartitions | 
 Sent from non-master nodes to the master to initialize the partition assignment. 
 | 
| FetchPartitionStateOperation | 
 Operation sent by the master to the cluster members to fetch their partition state. 
 | 
| FinalizeMigrationOperation | 
 Invoked locally on the source or destination of the migration to finalize the migration. 
 | 
| HasOngoingMigration | |
| MigrationCommitOperation | 
 Sent by the master node to commit a migration on the migration destination. 
 | 
| MigrationOperation | 
 Migration operation used by Hazelcast version 3.9
 It runs on the migration destination and applies the received fragments. 
 | 
| MigrationRequestOperation | 
 Migration request operation used by Hazelcast version 3.9
 Sent from the master node to the partition owner. 
 | 
| PartitionBackupReplicaAntiEntropyOperation | |
| PartitionReplicaSyncRequest | 
 The request sent from a replica to the partition owner to synchronize the replica data. 
 | 
| PartitionReplicaSyncResponse | 
 The replica synchronization response sent from the partition owner to a replica. 
 | 
| PartitionReplicaSyncRetryResponse | 
 The response to a  
PartitionReplicaSyncRequest that the replica should retry. | 
| PartitionStateOperation | 
 Sent from the master to publish or sync the partition table state to all cluster members. 
 | 
| PromotionCommitOperation | 
 Used for committing a promotion on destination. 
 | 
| SafeStateCheckOperation | 
 Checks whether a node is safe or not. 
 | 
| ShutdownRequestOperation | |
| ShutdownResponseOperation | 
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