@Override
	public MessageQueue select(List<MessageQueue> mqs, Message msg, Object arg) {
		Integer id = (Integer) ((MessageHeaders) arg).get(MessageConst.PROPERTY_ORIGIN_MESSAGE_ID);
		int index = id % RocketMQOrderlyConsumeApplication.tags.length % mqs.size();
		return mqs.get(index);
	}
to select a fixed queue by id.
@param mqs all message queues of this topic.
@param msg mq message.
@param arg mq arguments.
@return message queue selected.
spring-cloud-alibaba-examples/rocketmq-example/rocketmq-orderly-consume-example/src/main/java/com/alibaba/cloud/examples/orderly/OrderlyMessageQueueSelector.java