edu.iu.benchmark.JobLauncher.java Source code

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Here is the source code for edu.iu.benchmark.JobLauncher.java

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/*
 * Copyright 2013-2017 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.benchmark;

import edu.iu.fileformat.SingleFileInputFormat;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;

import java.io.IOException;
import java.net.URISyntaxException;
import java.util.concurrent.ExecutionException;

public class JobLauncher extends Configured implements Tool {

    public static void main(String[] argv) throws Exception {
        int res = ToolRunner.run(new Configuration(), new JobLauncher(), argv);
        System.exit(res);
    }

    @Override
    public int run(String[] args) throws Exception {
        if (args.length < 5) {
            System.err.println("Usage: edu.iu.benchmark.JobLauncher <command>" + "<number of bytes per partition>"
                    + "<number of partitions>" + "<number of mappers>" + "<number of iterations>");
            ToolRunner.printGenericCommandUsage(System.err);
            return -1;
        }
        String cmd = args[0];
        int bytesPerPartition = Integer.parseInt(args[1]);
        int numPartitions = Integer.parseInt(args[2]);
        int numMappers = Integer.parseInt(args[3]);
        int numIterations = Integer.parseInt(args[4]);
        boolean regenerateData = true;
        String workDirName = "benchmark";
        launch(cmd, bytesPerPartition, numPartitions, numMappers, numIterations, regenerateData, workDirName);
        return 0;
    }

    private void launch(String cmd, int bytesPerPartition, int numPartitions, int numMappers, int numIterations,
            boolean generateData, String workDirName) throws IOException, URISyntaxException, InterruptedException,
            ExecutionException, ClassNotFoundException {
        Configuration configuration = getConf();
        FileSystem fs = FileSystem.get(configuration);
        Path workDirPath = new Path(workDirName);
        Path inputDirPath = new Path(workDirPath, "input");
        Path outputDirPath = new Path(workDirPath, "output");
        if (fs.exists(outputDirPath)) {
            fs.delete(outputDirPath, true);
        }
        if (generateData) {
            System.out.println("Generate data.");
            DataGen.generateData(numMappers, inputDirPath, "/tmp/benchmark/", fs);
        }
        doBenchmark(cmd, bytesPerPartition, numPartitions, numMappers, numIterations, inputDirPath, outputDirPath);
    }

    private void doBenchmark(String cmd, int bytesPerPartition, int numPartitions, int numMappers,
            int numIterations, Path inputDirPath, Path outputDirPath) {
        try {
            Job benchamrkJob = configureBenchmarkJob(cmd, bytesPerPartition, numPartitions, numMappers,
                    numIterations, inputDirPath, outputDirPath);
            benchamrkJob.waitForCompletion(true);
        } catch (IOException | URISyntaxException | ClassNotFoundException | InterruptedException e) {
            e.printStackTrace();
        }
    }

    private Job configureBenchmarkJob(String cmd, int bytesPerPartition, int numPartitions, int numMappers,
            int numIterations, Path inputDirPath, Path outputDirPath) throws IOException, URISyntaxException {
        Job job = Job.getInstance(getConf(), "benchmark_job");
        FileInputFormat.setInputPaths(job, inputDirPath);
        FileOutputFormat.setOutputPath(job, outputDirPath);
        job.setInputFormatClass(SingleFileInputFormat.class);
        job.setJarByClass(JobLauncher.class);
        job.setMapperClass(BenchmarkMapper.class);
        org.apache.hadoop.mapred.JobConf jobConf = (JobConf) job.getConfiguration();
        jobConf.set("mapreduce.framework.name", "map-collective");
        jobConf.setNumMapTasks(numMappers);
        job.setNumReduceTasks(0);
        jobConf.set(Constants.BENCHMARK_CMD, cmd);
        jobConf.setInt(Constants.BYTES_PER_PARTITION, bytesPerPartition);
        jobConf.setInt(Constants.NUM_PARTITIONS, numPartitions);
        jobConf.setInt(Constants.NUM_MAPPERS, numMappers);
        jobConf.setInt(Constants.NUM_ITERATIONS, numIterations);
        return job;
    }
}