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 */
018package org.apache.hadoop.hbase.chaos.actions;
019
020import org.apache.hadoop.hbase.ServerName;
021import org.apache.hadoop.hbase.chaos.monkies.PolicyBasedChaosMonkey;
022import org.slf4j.Logger;
023import org.slf4j.LoggerFactory;
024
025public class RestartRandomRsExceptMetaAction extends RestartRandomRsAction {
026  private static final Logger LOG = LoggerFactory.getLogger(RestartRandomRsExceptMetaAction.class);
027
028  public RestartRandomRsExceptMetaAction(long sleepTime) {
029    super(sleepTime);
030  }
031
032  @Override
033  protected Logger getLogger() {
034    return LOG;
035  }
036
037  @Override
038  public void perform() throws Exception {
039    int tries = 10;
040
041    while (tries-- > 0 && getCurrentServers().length > 1) {
042      ServerName server = PolicyBasedChaosMonkey.selectRandomItem(getCurrentServers());
043      ServerName metaServer = cluster.getServerHoldingMeta();
044      if (server != null && !server.equals(metaServer)) {
045        restartRs(server, sleepTime);
046        break;
047      }
048    }
049  }
050}