code: private String fetchStats(InetSocketAddress jn) throws IOException {
      try {
        return DFSUtil.getHTMLContentWithTimeout(new URI("http", null, jn.getAddress().getHostAddress(), jn
            .getPort(), "/journalStats", null, null).toURL(), HTTP_CONNECT_TIMEOUT, HTTP_READ_TIMEOUT);
      } catch (Exception e) {
        LOG.error("Problem connecting to " + getHostAddress(jn), e);
        return null;
      }
    }
docs: Fetch stats from a single given journal node over http.