Source code

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,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.apache.reef.examples.hello;
020
021import org.apache.reef.client.DriverConfiguration;
022import org.apache.reef.client.DriverLauncher;
023import org.apache.reef.client.LauncherStatus;
024import org.apache.reef.runtime.yarn.client.YarnClientConfiguration;
025import org.apache.reef.tang.Configuration;
026import org.apache.reef.tang.exceptions.BindException;
027import org.apache.reef.tang.exceptions.InjectionException;
028
029import java.util.logging.Level;
030import java.util.logging.Logger;
031
032/**
033 * The Client for running HelloREEF on YARN.
034 */
035public final class HelloREEFYarn {
036
037  private static final Logger LOG = Logger.getLogger(HelloREEFYarn.class.getName());
038
039  /**
040   * Number of milliseconds to wait for the job to complete.
041   * Setting to 100 sec because running on RM HA clusters take around
042   * 50 seconds to set the job to running.
043   */
044  private static final int JOB_TIMEOUT = 100000; // 100 sec.
045
046  /**
047   * @return the configuration of the runtime
048   */
049  private static Configuration getRuntimeConfiguration() {
050    return YarnClientConfiguration.CONF.build();
051  }
052
053  /**
054   * @return the configuration of the HelloREEF driver.
055   */
056  private static Configuration getDriverConfiguration() {
057    return DriverConfiguration.CONF
058        .set(DriverConfiguration.GLOBAL_LIBRARIES,
059            HelloREEFYarn.class.getProtectionDomain().getCodeSource().getLocation().getFile())
060        .set(DriverConfiguration.DRIVER_IDENTIFIER, "HelloREEF")
061        .set(DriverConfiguration.ON_DRIVER_STARTED, HelloDriver.StartHandler.class)
062        .set(DriverConfiguration.ON_EVALUATOR_ALLOCATED, HelloDriver.EvaluatorAllocatedHandler.class)
063        .build();
064  }
065
066  /**
067   * Start Hello REEF job.
068   *
069   * @param args command line parameters.
070   * @throws BindException      configuration error.
071   * @throws InjectionException configuration error.
072   */
073  public static void main(final String[] args) throws BindException, InjectionException {
074    final Configuration runtimeConf = getRuntimeConfiguration();
075    final Configuration driverConf = getDriverConfiguration();
076
077    final LauncherStatus status = DriverLauncher
078        .getLauncher(runtimeConf)
079        .run(driverConf, JOB_TIMEOUT);
080    LOG.log(Level.INFO, "REEF job completed: {0}", status);
081  }
082
083  /**
084   * Empty private constructor to prohibit instantiation of utility class.
085   */
086  private HelloREEFYarn() {
087  }
088}