001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018
019package org.apache.hadoop.hbase.chaos.actions;
020
021import org.apache.hadoop.hbase.ServerName;
022import org.apache.hadoop.hbase.chaos.monkies.PolicyBasedChaosMonkey;
023import org.slf4j.Logger;
024import org.slf4j.LoggerFactory;
025
026/**
027 * Action that restarts a random HRegionServer
028 */
029public class RestartRandomRsAction extends RestartActionBaseAction {
030  private static final Logger LOG = LoggerFactory.getLogger(RestartRandomRsAction.class);
031
032  public RestartRandomRsAction(long sleepTime) {
033    super(sleepTime);
034  }
035
036  @Override protected Logger getLogger() {
037    return LOG;
038  }
039
040  @Override
041  public void perform() throws Exception {
042    getLogger().info("Performing action: Restart random region server");
043    ServerName server = PolicyBasedChaosMonkey.selectRandomItem(getCurrentServers());
044
045    restartRs(server, sleepTime);
046  }
047}