code: long getNumberRunsScratch(Map<byte[], byte[]> rawFamily) {
      long numberRuns = 0L;
      if (rawFamily != null) {
        numberRuns = rawFamily.size();
      }
      if (numberRuns == 0L) {
        LOG.error("Number of runs in scratch column family can't be 0,"
            + " if processing within TTL");
        throw new ProcessingException("Number of runs is 0");
      }
      return numberRuns;
    }
docs: interprets the number of runs based on number of columns in raw col family
  @param {@link Result}
  @return number of runs