这是依赖库的版本信息
<curator.recipes.version>4.2.0</curator.recipes.version>
<zookeeper.version>3.4.10</zookeeper.version>
[dubbo-.3.1.6.txt](https://github.com/apache/dubbo/files/11177448/dubbo-.3.1.6.txt)
有没有大佬帮忙看下什么问题导致，万分感谢！！！
ServiceInstance oldServiceInstance = this.serviceInstance;
        DefaultServiceInstance newServiceInstance = new DefaultServiceInstance((DefaultServiceInstance) oldServiceInstance);
        boolean revisionUpdated = calOrUpdateInstanceRevision(newServiceInstance);
        if (revisionUpdated) {
            logger.info(String.format("Metadata of instance changed, updating instance with revision %s.", newServiceInstance.getServiceMetadata().getRevision()));
            doUpdate(oldServiceInstance, newServiceInstance);
            this.serviceInstance = newServiceInstance;
        }
    }
    @Override
    public synchronized void unregister() throws RuntimeException {
        if (isDestroy) {
            return;
        }
        
        if (!isValidInstance(this.serviceInstance)) {
            return;
        }
        doUnregister(this.serviceInstance);
    }
    @Override
    public final ServiceInstance getLocalInstance() {
        return this.serviceInstance;
    }
    @Override
    public MetadataInfo getLocalMetadata() {
        return this.metadataInfo;
    }
    @Override
    public MetadataInfo getLocalMetadata(String revision) {