content: package com.manning.hip.ch6;
  
  import org.apache.hadoop.fs.Path;
  import org.apache.hadoop.io.*;
  import org.apache.hadoop.mapred.*;
  
  import java.io.IOException;
  
  public class SlowJob {
  
      public static class Map implements
        Mapper<LongWritable, Text, LongWritable, Text> {
  
      @Override
      public void configure(JobConf job) {
      }
  
      @Override
      public void map(LongWritable key, Text value,
                      OutputCollector<LongWritable, Text> output,
                      Reporter reporter) throws IOException {
  
        String[] parts = value.toString().split("\\.");
        Text outputValue = new Text(parts[0]);
        output.collect(key, outputValue);
      }
  
      @Override
      public void close() throws IOException {
      }
  
    }
  
    public static void main(String... args) throws Exception {
  
      JobConf job = new JobConf();
      job.setJarByClass(SlowJob.class);
      Path input = new Path(args[0]);
      Path output = new Path(args[1]);
  
      output.getFileSystem(job).delete(output, true);
  
      job.setMapperClass(Map.class);
  
      FileInputFormat.setInputPaths(job, input);
      FileOutputFormat.setOutputPath(job, output);
  
      job.setProfileEnabled(true);
      job.setProfileParams(
          "-agentlib:hprof=depth=8,cpu=samples,heap=sites,force=n," +
          "thread=y,verbose=n,file=%s");
      job.setProfileTaskRange(true, "0,1,5-10");
      job.setProfileTaskRange(false, "");
  
      JobClient.runJob(job);
  
      System.out.println("Done");
  
      Thread.sleep(20000);
    }
  
  
  }
  