1 /**
2 * Copyright 2010 The Apache Software Foundation
3 *
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 */
20 package org.apache.hadoop.hbase.regionserver;
21
22 /**
23 * Implementations are stoppable.
24 */
25 interface Stoppable {
26 // Starting small, just doing a stoppable/stop for now and keeping it package
27 // protected for now. Needed so don't have to pass RegionServer instance
28 // everywhere. Doing Lifecycle seemed a stretch since none of our servers
29 // do natural start/stop, etc. RegionServer is hosted in a Thread (can't do
30 // 'stop' on a Thread and 'start' has special meaning for Threads) and then
31 // Master is implemented differently again (it is a Thread itself). We
32 // should move to redoing Master and RegionServer servers to use Spring or
33 // some such container but for now, I just need stop -- St.Ack.
34 /**
35 * Stop service.
36 */
37 public void stop();
38 }