class DFSAdmin extends FsShell {

  int startReconfiguration(String nodeType, String address) throws IOException {
    if ("datanode".equals(nodeType)) {
      ClientDatanodeProtocol dnProxy = getDataNodeProxy(address);
      dnProxy.startReconfiguration();
      System.out.println("Started reconfiguration task on DataNode " + address);
      return 0;
    } else {
      System.err.println("Node type " + nodeType +
          " does not support reconfiguration.");
      return 1;
    }
  }

  public  DFSAdmin();
  public  DFSAdmin(Configuration conf);

}