code: public static List<String> splitToPairs(String hostPortQuorumList) {
      // split an address hot
      String[] strings = StringUtils.getStrings(hostPortQuorumList);
      int len = 0;
      if (strings != null) {
        len = strings.length;
      }
      List<String> tuples = new ArrayList<String>(len);
      if (strings != null) {
        for (String s : strings) {
          tuples.add(s.trim());
        }
      }
      return tuples;
    }
docs: Take a quorum list and split it to (trimmed) pairs
  @param hostPortQuorumList list of form h1:port, h2:port2,...
  @return a possibly empty list of values between commas. They may not be
  valid hostname:port pairs