code: @Override
    public void reconfigurePropertyImpl(String property, String newVal)
      throws ReconfigurationException {
      // just pass everything to the namesystem
      if (namesystem.isPropertyReconfigurable(property)) {
        namesystem.reconfigureProperty(property, newVal);
      } else if ("fs.trash.interval".equals(property)) {
        reconfigureTrashIntervalProperty(property, newVal);
      } else if ("dfs.enableHftp".equals(property)) {
        reconfigureEnableHftp(property, newVal);
      } else {
        throw new ReconfigurationException(property, newVal,
                                           getConf().get(property));
      }
    }
docs: {@inheritDoc}