public static byte[] max(final byte[] a, final byte[] b) {
        return getDefaultByteArrayComparator().compare(a, b) > 0 ? a : b;
    }
This method has better performance than String#String(byte[], Charset),
See the benchmark class: Utf8Benchmark for details.
jraft-core/src/main/java/com/alipay/sofa/jraft/util/BytesUtil.java