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 java.io.IOException; 22 import java.util.Collection; 23 24 import org.apache.commons.lang.math.RandomUtils; 25 import org.apache.hadoop.conf.Configuration; 26 import org.apache.hadoop.hbase.ServerName; 27 import org.apache.hadoop.hbase.TableName; 28 import org.apache.hadoop.hbase.client.HTable; 29 30 /** 31 * Action that restarts an HRegionServer holding one of the regions of the table. 32 */ 33 public class RestartRsHoldingTableAction extends RestartActionBaseAction { 34 35 private final String tableName; 36 RestartRsHoldingTableAction(long sleepTime, String tableName)37 public RestartRsHoldingTableAction(long sleepTime, String tableName) { 38 super(sleepTime); 39 this.tableName = tableName; 40 } 41 42 @Override perform()43 public void perform() throws Exception { 44 HTable table = null; 45 try { 46 LOG.info("Performing action: Restart random RS holding table " + this.tableName); 47 Configuration conf = context.getHBaseIntegrationTestingUtility().getConfiguration(); 48 table = new HTable(conf, TableName.valueOf(tableName)); 49 } catch (IOException e) { 50 LOG.debug("Error creating HTable used to get list of region locations.", e); 51 return; 52 } 53 54 Collection<ServerName> serverNames = table.getRegionLocations().values(); 55 ServerName[] nameArray = serverNames.toArray(new ServerName[serverNames.size()]); 56 57 restartRs(nameArray[RandomUtils.nextInt(nameArray.length)], sleepTime); 58 } 59 } 60