@Override
    public int compare(byte[] left, byte[] right) {
      return compare(left, 0, left.length, right, 0, right.length);
    }
A {@link ByteArrayComparator} that treats the empty array as the largest value. This is useful
for comparing row end keys for regions.
hbase-common/src/main/java/org/apache/hadoop/hbase/util/Bytes.java