* </p>
     */
    public DataSerializer() {
        kryoThreadLocal = ThreadLocal.withInitial(() -> {
            final Kryo kryo = new Kryo();
            // TODO use kryo.register
            kryo.setRegistrationRequired(false);
            if (logger.isDebugEnabled()) {
                kryo.setWarnUnregisteredClasses(true);
            }
            return kryo;
        });
    }

    /**