new_contents: import sys, socket, time, logging
  import shlex, subprocess
  from hdfs import *
  
  logging.basicConfig()
  
  if len(sys.argv) < 4:
    print "usage: napper_kittydar <job name> <worker ID> <executable>"
    sys.exit(1)
  
  job_name = sys.argv[1]
  worker_id = int(sys.argv[2])
  kittydar_path = " ".join(sys.argv[3:])
  
  # fetch inputs from HDFS if necessary
  hdfs_fetch_file("/input/kittys/CAT_0%d" % (worker_id), os.environ['FLAGS_task_data_dir'])
  
  # execute program
  command = "nodejs %s %s/CAT_0%d" % (kittydar_path, os.environ['FLAGS_task_data_dir'], worker_id)
  print "RUNNING: %s" % (command)
  subprocess.call(shlex.split(command))
  
  print "Deleting scratch data..."
  del_command = "rm -rf %s" % (os.environ['FLAGS_task_data_dir'])
  subprocess.call(shlex.split(del_command))
  
  print "All done -- goodbye from Napper!"
  
  sys.exit(0)
  
subject: Add simplified napper instance for kittydar.