code: RaidState match(FileStatus f, long mtime, long now, Configuration conf,
        List<FileStatus> lfs)
            throws IOException {
      String pathStr = normalizePath(f.getPath());
      if (pathStr.startsWith(srcPrefix)) {
        return getBasicState(f, mtime, now, false, conf, lfs);
      }
      return RaidState.NOT_RAIDED_NO_POLICY;
    }
docs: /*
  Return state of other policy