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 java.util.List; 022 023import org.apache.commons.lang3.RandomUtils; 024import org.apache.hadoop.hbase.HRegionLocation; 025import org.apache.hadoop.hbase.client.RegionLocator; 026import org.slf4j.Logger; 027import org.slf4j.LoggerFactory; 028 029/** 030* Action that restarts an HRegionServer holding one of the regions of the table. 031*/ 032public class RestartRsHoldingTableAction extends RestartActionBaseAction { 033 private static final Logger LOG = 034 LoggerFactory.getLogger(RestartRsHoldingTableAction.class); 035 036 private final RegionLocator locator; 037 038 public RestartRsHoldingTableAction(long sleepTime, RegionLocator locator) { 039 super(sleepTime); 040 this.locator = locator; 041 } 042 043 @Override 044 public void perform() throws Exception { 045 LOG.info("Performing action: Restart random RS holding table " + this.locator.getName()); 046 047 List<HRegionLocation> locations = locator.getAllRegionLocations(); 048 restartRs(locations.get(RandomUtils.nextInt(0, locations.size())).getServerName(), sleepTime); 049 } 050}