private static long getLowestSequenceId(Map<?, Long> sequenceids) {
    long lowest = HConstants.NO_SEQNUM;
    for (Map.Entry<?, Long> entry : sequenceids.entrySet()) {
      if (entry.getKey().toString().equals("METAFAMILY")) {
        continue;
      }
      Long sid = entry.getValue();
      if (lowest == HConstants.NO_SEQNUM || sid.longValue() < lowest) {
        lowest = sid.longValue();
      }
    }
    return lowest;
  }
@param sequenceids Map to search for lowest value.
@return Lowest value found in <code>sequenceids</code>.
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/SequenceIdAccounting.java