code: private void populatePut(Put p, byte[] family, String key, long value) {
  
      byte[] valueBytes = null;
      valueBytes = (value != 0L) ? Bytes.toBytes(value) : Constants.ZERO_LONG_BYTES;
      byte[] qualifier = Bytes.toBytes(getKey(key).toLowerCase());
      p.addColumn(family, qualifier, valueBytes);
    }
docs: populates a put for long values
  @param {@link Put} p
  @param {@link Constants} family
  @param String key
  @param long value