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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  }