Configuring a "job":
Sunday, February 28, 2010
9:17 PM
Configuring a "job": 
  Specify output types: 
  conf.setOutputKeyClass(Text.class);
  conf.setOutputValueClass(IntWritable.class);
  Specify input and output directories in filesystem
  FileInputPath.addInputPath(conf, new Path("input"));
  FileOutputPath.addOutputPath(conf, new Path("output"));
  Specify a mapper
  conf.setMapperClass(WordCountMapper.class);
  Specify a reducer (a combiner is a partial reducer)
  conf.setReducerClass(WordCountReducer.class);
  conf.setCombinerClass(WordCountReducer.class);