1   /**
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *     http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing, software
13   * distributed under the License is distributed on an "AS IS" BASIS,
14   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15   * See the License for the specific language governing permissions and
16   * limitations under the License.
17   */
18  
19  package org.apache.hadoop.hbase;
20  
21  import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.MasterService;
22  
23  /**
24   * Functions implemented by all the master protocols: e.g. {@link MasterAdminProtocol}
25   * and {@link MasterMonitorProtocol}. Currently, the only shared method
26   * {@link #isMasterRunning(com.google.protobuf.RpcController, org.apache.hadoop.hbase.protobuf.generated.MasterProtos.IsMasterRunningRequest)}
27   * which is used on connection setup to check if the master has been stopped.
28   */
29  public interface MasterProtocol extends IpcProtocol, MasterService.BlockingInterface {}