org.apache.hadoop.hbase.ipc
Interfaces 
RpcClientEngine
Classes 
BlockingRpcCallback
CoprocessorRpcChannel
HBaseClient
HBaseClient.ConnectionId
HBaseClientRPC
MasterCoprocessorRpcChannel
PayloadCarryingRpcController
ProtobufRpcClientEngine
RegionCoprocessorRpcChannel
ServerRpcController
Exceptions 
FatalConnectionException
HBaseClient.CallTimeoutException
HBaseClient.FailedServerException
RemoteWithExtrasException