| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.hadoop.mapreduce.test.system; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.mapreduce.server.jobtracker.JTConfig; |
| import org.apache.hadoop.test.system.AbstractDaemonClient; |
| import org.apache.hadoop.test.system.AbstractDaemonCluster; |
| import org.apache.hadoop.test.system.process.ClusterProcessManager; |
| import org.apache.hadoop.test.system.process.HadoopDaemonRemoteCluster; |
| import org.apache.hadoop.test.system.process.MultiUserHadoopDaemonRemoteCluster; |
| import org.apache.hadoop.test.system.process.RemoteProcess; |
| import org.apache.hadoop.test.system.process.HadoopDaemonRemoteCluster.HadoopDaemonInfo; |
| |
| /** |
| * Concrete AbstractDaemonCluster representing a Map-Reduce cluster. |
| * |
| */ |
| @SuppressWarnings("unchecked") |
| public class MRCluster extends AbstractDaemonCluster { |
| |
| private static final Log LOG = LogFactory.getLog(MRCluster.class); |
| public static final String CLUSTER_PROCESS_MGR_IMPL = |
| "test.system.mr.clusterprocess.impl.class"; |
| |
| /** |
| * Key is used to to point to the file containing hostnames of tasktrackers |
| */ |
| public static final String CONF_HADOOP_TT_HOSTFILE_NAME = |
| "test.system.hdrc.tt.hostfile"; |
| |
| private static List<HadoopDaemonInfo> mrDaemonInfos = |
| new ArrayList<HadoopDaemonInfo>(); |
| private static String TT_hostFileName; |
| private static String jtHostName; |
| private static final String SYSTEM_TEST_FILE = "system-test.xml"; |
| |
| protected enum Role {JT, TT}; |
| |
| static{ |
| Configuration.addDefaultResource("mapred-default.xml"); |
| Configuration.addDefaultResource("mapred-site.xml"); |
| } |
| |
| private MRCluster(Configuration conf, ClusterProcessManager rCluster) |
| throws IOException { |
| super(conf, rCluster); |
| } |
| |
| /** |
| * Factory method to create an instance of the Map-Reduce cluster.<br/> |
| * |
| * @param conf |
| * contains all required parameter to create cluster. |
| * @return a cluster instance to be managed. |
| * @throws Exception |
| */ |
| public static MRCluster createCluster(Configuration conf) |
| throws Exception { |
| conf.addResource(SYSTEM_TEST_FILE); |
| TT_hostFileName = conf.get(CONF_HADOOP_TT_HOSTFILE_NAME, "slaves"); |
| String jtHostPort = conf.get(JTConfig.JT_IPC_ADDRESS); |
| if (jtHostPort == null) { |
| throw new Exception(JTConfig.JT_IPC_ADDRESS + "is not set or " |
| + SYSTEM_TEST_FILE + " hasn't been found."); |
| } |
| jtHostName = jtHostPort.trim().split(":")[0]; |
| |
| mrDaemonInfos.add(new HadoopDaemonInfo("jobtracker", |
| Role.JT, Arrays.asList(new String[]{jtHostName}))); |
| mrDaemonInfos.add(new HadoopDaemonInfo("tasktracker", |
| Role.TT, TT_hostFileName)); |
| |
| String implKlass = conf.get(CLUSTER_PROCESS_MGR_IMPL); |
| if (implKlass == null || implKlass.isEmpty()) { |
| implKlass = MRProcessManager.class.getName(); |
| } |
| Class<ClusterProcessManager> klass = (Class<ClusterProcessManager>) Class |
| .forName(implKlass); |
| ClusterProcessManager clusterProcessMgr = klass.newInstance(); |
| LOG.info("Created ClusterProcessManager as " + implKlass); |
| clusterProcessMgr.init(conf); |
| return new MRCluster(conf, clusterProcessMgr); |
| } |
| |
| protected JTClient createJTClient(RemoteProcess jtDaemon) |
| throws IOException { |
| return new JTClient(getConf(), jtDaemon); |
| } |
| |
| protected TTClient createTTClient(RemoteProcess ttDaemon) |
| throws IOException { |
| return new TTClient(getConf(), ttDaemon); |
| } |
| |
| public JTClient getJTClient() { |
| Iterator<AbstractDaemonClient> it = getDaemons().get(Role.JT).iterator(); |
| return (JTClient) it.next(); |
| } |
| |
| public List<TTClient> getTTClients() { |
| return (List) getDaemons().get(Role.TT); |
| } |
| |
| public TTClient getTTClient(String hostname) { |
| for (TTClient c : getTTClients()) { |
| if (c.getHostName().equals(hostname)) { |
| return c; |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public void ensureClean() throws IOException { |
| //TODO: ensure that no jobs/tasks are running |
| //restart the cluster if cleanup fails |
| JTClient jtClient = getJTClient(); |
| JobInfo[] jobs = jtClient.getProxy().getAllJobInfo(); |
| for(JobInfo job : jobs) { |
| jtClient.killJob( |
| org.apache.hadoop.mapred.JobID.downgrade(job.getID())); |
| } |
| } |
| |
| @Override |
| protected AbstractDaemonClient createClient( |
| RemoteProcess process) throws IOException { |
| if (Role.JT.equals(process.getRole())) { |
| return createJTClient(process); |
| } else if (Role.TT.equals(process.getRole())) { |
| return createTTClient(process); |
| } else throw new IOException("Role: "+ process.getRole() + " is not " + |
| "applicable to MRCluster"); |
| } |
| |
| public static class MRProcessManager extends HadoopDaemonRemoteCluster{ |
| public MRProcessManager() { |
| super(mrDaemonInfos); |
| } |
| } |
| |
| public static class MultiMRProcessManager |
| extends MultiUserHadoopDaemonRemoteCluster { |
| public MultiMRProcessManager() { |
| super(mrDaemonInfos); |
| } |
| } |
| } |