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;
21
22 /**
23 * Interface to support the aborting of a given server or client.
24 * <p>
25 * This is used primarily for ZooKeeper usage when we could get an unexpected
26 * and fatal exception, requiring an abort.
27 * <p>
28 * Implemented by the Master, RegionServer, and TableServers (client).
29 */
30 public interface Abortable {
31 /**
32 * Abort the server or client.
33 * @param why Why we're aborting.
34 * @param e Throwable that caused abort. Can be null.
35 */
36 public void abort(String why, Throwable e);
37
38 /**
39 * Check if the server or client was aborted.
40 * @return true if the server or client was aborted, false otherwise
41 */
42 public boolean isAborted();
43 }