| /** |
| * 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.conf.Configuration; |
| import org.apache.hadoop.ipc.RPC; |
| import org.apache.hadoop.net.NetUtils; |
| import org.apache.hadoop.security.UserGroupInformation; |
| |
| /* |
| * Communicate with the JobTracker as a specific user. |
| */ |
| public class TempletonJobTracker { |
| private JobSubmissionProtocol cnx; |
| |
| /** |
| * Create a connection to the Job Tracker. |
| */ |
| public TempletonJobTracker(UserGroupInformation ugi, |
| InetSocketAddress addr, |
| Configuration conf) |
| throws IOException |
| { |
| cnx = (JobSubmissionProtocol) |
| RPC.getProxy(JobSubmissionProtocol.class, |
| JobSubmissionProtocol.versionID, |
| addr, |
| ugi, |
| conf, |
| NetUtils.getSocketFactory(conf, |
| JobSubmissionProtocol.class)); |
| } |
| |
| /** |
| * Grab a handle to a job that is already known to the JobTracker. |
| * |
| * @return Profile of the job, or null if not found. |
| */ |
| public JobProfile getJobProfile(JobID jobid) |
| throws IOException |
| { |
| return cnx.getJobProfile(jobid); |
| } |
| |
| /** |
| * Grab a handle to a job that is already known to the JobTracker. |
| * |
| * @return Status of the job, or null if not found. |
| */ |
| public JobStatus getJobStatus(JobID jobid) |
| throws IOException |
| { |
| return cnx.getJobStatus(jobid); |
| } |
| |
| |
| /** |
| * Kill a job. |
| */ |
| public void killJob(JobID jobid) |
| throws IOException |
| { |
| cnx.killJob(jobid); |
| } |
| |
| /** |
| * Get all the jobs submitted. |
| */ |
| public JobStatus[] getAllJobs() |
| throws IOException |
| { |
| return cnx.getAllJobs(); |
| } |
| |
| /** |
| * Close the connection to the Job Tracker. |
| */ |
| public void close() { |
| RPC.stopProxy(cnx); |
| } |
| } |