code: public boolean mkdirs(Path f, FsPermission permission) throws IOException {
      try (Closeable context = new TimerContextWithLog(mkdirTimer.time(), "mkdirs", f, permission)) {
        return super.mkdirs (f, permission);
      }
    }
docs: Add timer metrics to {@link DistributedFileSystem#mkdirs(Path, FsPermission)}