1 /**
2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 */
19 package org.apache.hadoop.hbase;
20
21 import org.apache.hadoop.hbase.classification.InterfaceAudience;
22 import org.apache.hadoop.hbase.classification.InterfaceStability;
23
24 /**
25 * Implementers are Stoppable.
26 */
27 @InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.COPROC)
28 @InterfaceStability.Evolving
29 public interface Stoppable {
30 /**
31 * Stop this service.
32 * @param why Why we're stopping.
33 */
34 void stop(String why);
35
36 /**
37 * @return True if {@link #stop(String)} has been closed.
38 */
39 boolean isStopped();
40 }