001 /** 002 * Copyright (c) 2010 Yahoo! Inc. All rights reserved. 003 * Licensed under the Apache License, Version 2.0 (the "License"); 004 * you may not use this file except in compliance with the License. 005 * You may obtain a copy of the License at 006 * 007 * http://www.apache.org/licenses/LICENSE-2.0 008 * 009 * Unless required by applicable law or agreed to in writing, software 010 * distributed under the License is distributed on an "AS IS" BASIS, 011 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012 * See the License for the specific language governing permissions and 013 * limitations under the License. See accompanying LICENSE file. 014 */ 015 package org.apache.oozie.action.hadoop; 016 017 import org.apache.hadoop.mapred.JobClient; 018 import org.apache.hadoop.mapred.JobConf; 019 import org.apache.hadoop.io.Text; 020 import org.apache.hadoop.mapreduce.security.token.delegation.DelegationTokenIdentifier; 021 import org.apache.hadoop.security.token.Token; 022 import org.apache.oozie.action.hadoop.AuthHelper; 023 024 import java.io.IOException; 025 026 public class KerberosAuthHelper extends AuthHelper { 027 028 public void set(JobClient jobClient, JobConf launcherJobConf) throws IOException, InterruptedException { 029 Token<DelegationTokenIdentifier> mrdt = jobClient.getDelegationToken(new Text("mr token")); 030 launcherJobConf.getCredentials().addToken(new Text("mr token"), mrdt); 031 } 032 033 }