public static void main(String[] args) throws Exception {
    Configuration conf = new Configuration();
    conf.set("fs.defaultFS", "hdfs://localhost:9000");
    Job job = Job.getInstance(conf, "word count");
    job.setJarByClass(VisitorPathCount.class);
    job.setMapperClass(TokenizerMapper.class);
    job.setCombinerClass(IntSumReducer.class);
    job.setReducerClass(IntSumReducer.class);
    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(IntWritable.class);
    FileInputFormat.addInputPath(job, new Path("/s3logs"));
    FileOutputFormat.setOutputPath(job, new Path("/tmp/result.txt"));
    System.exit(job.waitForCompletion(true) ? 0 : 1);
}