alan2016llg opened a new issue, #2549:
URL: https://github.com/apache/dubbo-go/issues/2549
### Environment
<!--
- Server: Dubbo-go, v3.0.5
- Client: Dubbo-go, v3.0.5
- Protocol: Triple
- Registry: Nacos, v2.0.0
-->
- Server:
- Client: Dubbo-go, v3.1.0
- Protocol: dubbo
- Registry: zk
### Issue description
我们的服务主要通过泛化方式调用dubbo服务，在一段时间后，程序会panic,详细错误看下面
<!-- Here is a brief description about the issue. -->
### Logs
<details><summary>Click me to check logs</summary>
```
fatal error: concurrent map writes
fatal error: concurrent map writes
goroutine 252343 [running]:
dubbo.apache.org/dubbo-go/v3/registry/servicediscovery.(*ServiceInstancesChangedListenerImpl).OnEvent(0xc001e3af30,
{0x26be600?, 0xc0014fdef0})
/home/zmn/go/pkg/mod/dubbo.apache.org/dubbo-go/[email protected]/registry/servicediscovery/service_instances_changed_listener_impl.go:64
+0x98
dubbo.apache.org/dubbo-go/v3/registry/zookeeper.(*zookeeperServiceDiscovery).DataChange(0xc000350150,
{{0xc0016de080, 0x34}, 0x0, {0xc0007a7500, 0x303}})
/home/zmn/go/pkg/mod/dubbo.apache.org/dubbo-go/[email protected]/registry/zookeeper/service_discovery.go:277
+0x557
dubbo.apache.org/dubbo-go/v3/remoting/zookeeper.(*ZkEventListener).handleZkNodeEvent(0xc001e3acf0,
{0xc0030e1be0, 0x20}, {0xc002cb4ae0, 0x2, 0x1?}, {0x269eb20, 0xc000350150})
/home/zmn/go/pkg/mod/dubbo.apache.org/dubbo-go/[email protected]/remoting/zookeeper/listener.go:213
+0x536
dubbo.apache.org/dubbo-go/v3/remoting/zookeeper.(*ZkEventListener).startScheduleWatchTask(0xc001e3acf0,
{0xc0030e1be0, 0x20}, {0xc002cb4ae0, 0x2, 0x2}, 0x8bb2c97000, {0x269eb20,
0xc000350150}, 0xc00215d560)
/home/zmn/go/pkg/mod/dubbo.apache.org/dubbo-go/[email protected]/remoting/zookeeper/listener.go:430
+0x19d
dubbo.apache.org/dubbo-go/v3/remoting/zookeeper.(*ZkEventListener).listenDirEvent(0xc001e3acf0,
0x0, {0xc0030e1be0, 0x20}, {0x269eb20?, 0xc000350150}, {0x0, 0x0})
/home/zmn/go/pkg/mod/dubbo.apache.org/dubbo-go/[email protected]/remoting/zookeeper/listener.go:412
+0x5b1
dubbo.apache.org/dubbo-go/v3/remoting/zookeeper.(*ZkEventListener).ListenServiceEvent.func1({0xc0030e1be0,
0x20}, {0x269eb20?, 0xc000350150?})
/home/zmn/go/pkg/mod/dubbo.apache.org/dubbo-go/[email protected]/remoting/zookeeper/listener.go:470
+0xb7
created by
dubbo.apache.org/dubbo-go/v3/remoting/zookeeper.(*ZkEventListener).ListenServiceEvent
/home/zmn/go/pkg/mod/dubbo.apache.org/dubbo-go/[email protected]/remoting/zookeeper/listener.go:465
+0x1be
```
</details>
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