README

Structure of the code
  There are only one folder, the script folder.

  Executable scripts are in the script folder.
    - script/topology.sh
      Resolve DNS name to rack name mapping.
      Described in recipe 2 'Using network topology script to make Hadoop rack awareness'

    - script/topology.data
      Holds the DNS name to rack name mapping data. Read by topology.sh to resolve the mapping.
      Described in recipe 2 'Using network topology script to make Hadoop rack awareness'
