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.chaos.actions;
20
21 import org.apache.hadoop.hbase.ServerName;
22 import org.apache.hadoop.hbase.chaos.monkies.PolicyBasedChaosMonkey;
23 import org.slf4j.Logger;
24 import org.slf4j.LoggerFactory;
25
26 /**
27 * Action that restarts a random HRegionServer
28 */
29 public class RestartRandomRsAction extends RestartActionBaseAction {
30 private static final Logger LOG = LoggerFactory.getLogger(RestartRandomRsAction.class);
31
32 public RestartRandomRsAction(long sleepTime) {
33 super(sleepTime);
34 }
35
36 @Override protected Logger getLogger() {
37 return LOG;
38 }
39
40 @Override
41 public void perform() throws Exception {
42 getLogger().info("Performing action: Restart random region server");
43 ServerName server = PolicyBasedChaosMonkey.selectRandomItem(getCurrentServers());
44
45 restartRs(server, sleepTime);
46 }
47 }