Java tutorial
/* * Copyright 2013-2016 Indiana University * * Licensed 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 edu.iu.daal_ar.Aprior; import edu.iu.data_aux.HarpDAALConstants; import edu.iu.data_aux.Initialize; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.conf.Configured; import org.apache.hadoop.mapreduce.Job; import org.apache.hadoop.util.Tool; import org.apache.hadoop.util.ToolRunner; import java.text.SimpleDateFormat; import java.util.Calendar; public class ARDaalLauncher extends Configured implements Tool { public static void main(String[] argv) throws Exception { int res = ToolRunner.run(new Configuration(), new ARDaalLauncher(), argv); System.exit(res); } /** * Launches all the tasks in order. */ @Override public int run(String[] args) throws Exception { /* Put shared libraries into the distributed cache */ Configuration conf = this.getConf(); Initialize init = new Initialize(conf, args); /* Put shared libraries into the distributed cache */ init.loadDistributedLibs(); // load args init.loadSysArgs(); //load app args conf.setInt(HarpDAALConstants.FILE_DIM, Integer.parseInt(args[init.getSysArgNum()])); conf.setDouble(Constants.MIN_SUPPORT, Double.parseDouble(args[init.getSysArgNum() + 1])); conf.setDouble(Constants.MIN_CONFIDENCE, Double.parseDouble(args[init.getSysArgNum() + 2])); // launch job System.out.println("Starting Job"); long perJobSubmitTime = System.currentTimeMillis(); System.out.println( "Start Job#" + " " + new SimpleDateFormat("HH:mm:ss.SSS").format(Calendar.getInstance().getTime())); Job arbatchJob = init.createJob("arbatchJob", ARDaalLauncher.class, ARDaalCollectiveMapper.class); // finish job boolean jobSuccess = arbatchJob.waitForCompletion(true); System.out.println( "End Job#" + " " + new SimpleDateFormat("HH:mm:ss.SSS").format(Calendar.getInstance().getTime())); System.out.println( "| Job#" + " Finished in " + (System.currentTimeMillis() - perJobSubmitTime) + " miliseconds |"); if (!jobSuccess) { arbatchJob.killJob(); System.out.println("ArBatchJob Job failed"); } return 0; } }