每次应用重启，都会在 /dubbo/metadata/${appName} 下生成一个版本号。经过调试，发现在每次计算 revison， 会连同  pid 和 timestamp 一起计算。这样是不是有问题呢？

![image](https://user-images.githubusercontent.com/24663965/125059185-a1178700-e0dd-11eb-8271-0243d59d30b6.png)

public String getPath() {
            return path;
        }
        public void setPath(String path) {
            this.path = path;
        }
        public String getProtocol() {
            return protocol;
        }
        public void setProtocol(String protocol) {
            this.protocol = protocol;
        }
        public Map<String, String> getParams() {
            if (params == null) {
                return Collections.emptyMap();
            }
            return params;
        }
        public void setParams(Map<String, String> params) {
            this.params = params;
        }
        public Map<String, String> getAllParams() {
            if (consumerParams != null) {
                Map<String, String> allParams = new HashMap<>((int) ((params.size() + consumerParams.size()) / 0.75f + 1));
                allParams.putAll(params);
                allParams.putAll(consumerParams);
                return allParams;
            }
            return params;
        }