code: public FileStatus getFileInfo(String src)  throws IOException {
      myMetrics.numFileInfoOps.inc();
      return namesystem.getFileInfo(src);
    }
docs: Get the file info for a specific file.
  @param src The string representation of the path to the file
  @throws IOException if permission to access file is denied by the system
  @return object containing information regarding the file
  or null if file not found