| /** |
| * 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.mapred; |
| |
| import java.io.IOException; |
| import java.net.InetSocketAddress; |
| |
| import org.apache.hadoop.classification.InterfaceAudience.Private; |
| import org.apache.hadoop.classification.InterfaceStability.Unstable; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.mapreduce.MRConfig; |
| import org.apache.hadoop.net.NetUtils; |
| import org.apache.hadoop.security.SecurityUtil; |
| import org.apache.hadoop.yarn.conf.YarnConfiguration; |
| |
| @Private |
| @Unstable |
| public class Master { |
| |
| public enum State { |
| INITIALIZING, RUNNING; |
| } |
| |
| public static String getMasterUserName(Configuration conf) { |
| String framework = conf.get(MRConfig.FRAMEWORK_NAME, MRConfig.YARN_FRAMEWORK_NAME); |
| if (framework.equals(MRConfig.CLASSIC_FRAMEWORK_NAME)) { |
| return conf.get(MRConfig.MASTER_USER_NAME); |
| } |
| else { |
| return conf.get(YarnConfiguration.RM_PRINCIPAL); |
| } |
| } |
| |
| public static InetSocketAddress getMasterAddress(Configuration conf) { |
| String masterAddress; |
| String framework = conf.get(MRConfig.FRAMEWORK_NAME, MRConfig.YARN_FRAMEWORK_NAME); |
| if (framework.equals(MRConfig.CLASSIC_FRAMEWORK_NAME)) { |
| masterAddress = conf.get(MRConfig.MASTER_ADDRESS, "localhost:8012"); |
| return NetUtils.createSocketAddr(masterAddress, 8012, MRConfig.MASTER_ADDRESS); |
| } |
| else { |
| masterAddress = conf.get(YarnConfiguration.RM_ADDRESS, |
| YarnConfiguration.DEFAULT_RM_ADDRESS); |
| return NetUtils.createSocketAddr(masterAddress, YarnConfiguration.DEFAULT_RM_PORT, |
| YarnConfiguration.RM_ADDRESS); |
| } |
| } |
| |
| public static String getMasterPrincipal(Configuration conf) |
| throws IOException { |
| String masterHostname = getMasterAddress(conf).getHostName(); |
| // get kerberos principal for use as delegation token renewer |
| return SecurityUtil.getServerPrincipal(getMasterUserName(conf), masterHostname); |
| } |
| |
| } |