CAICAIIs commented on issue #3070:
URL: https://github.com/apache/dubbo-go/issues/3070#issuecomment-3521260244
当我用本地仓库修改回去并测试发现几乎没什么问题：
```bash
~/github/dubbo-go$ go test -v ./registry/etcdv3
=== RUN TestNewEtcdV3ServiceDiscovery
2025-11-12T18:17:34.897+0800 INFO etcdv3/service_discovery.go:310 etcd
address is: 127.0.0.1:2379,timeout is:5s
2025/11/12 18:17:34 etcd client {Endpoints:[127.0.0.1:2379], Name:etcd
registry} keep goroutine game over.
2025/11/12 18:17:34 etcd client{Name:etcd registry,
Endpoints:[127.0.0.1:2379]} exit now.
--- PASS: TestNewEtcdV3ServiceDiscovery (0.00s)
=== RUN TestEtcdV3ServiceDiscoveryGetDefaultPageSize
--- PASS: TestEtcdV3ServiceDiscoveryGetDefaultPageSize (0.00s)
=== RUN TestFunction
2025-11-12T18:17:34.902+0800 INFO etcdv3/service_discovery.go:310 etcd
address is: 127.0.0.1:2379,timeout is:5s
2025/11/12 18:17:34 etcd client {Endpoints:[127.0.0.1:2379], Name:etcd
registry} keep goroutine game over.
2025/11/12 18:17:34 listenKeepAliveRsp canceled: unexpected lease expired:
/services/test/127.0.0.1:2233
2025/11/12 18:17:34 listenKeepAliveRsp canceled: unexpected lease expired:
/services/test/127.0.0.1:2233
2025/11/12 18:17:34 etcd client{Name:etcd registry,
Endpoints:[127.0.0.1:2379]} exit now.
--- PASS: TestFunction (0.01s)
PASS
ok dubbo.apache.org/dubbo-go/v3/registry/etcdv3 (cached)
```
我觉得虽然 grpc.WithBlock() 被标记为弃用，但在最新版本里依旧保留，所以我们可以等官方给出替代 API 再来修改，现在先回退回去或许好点
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