smalltalkhyb opened a new issue, #14196: URL: https://github.com/apache/dubbo/issues/14196
### Pre-check - [X] I am sure that all the content I provide is in English. ### Search before asking - [X] I had searched in the [issues](https://github.com/apache/dubbo/issues?q=is%3Aissue) and found no similar issues. ### Apache Dubbo Component Java SDK (apache/dubbo) ### Dubbo Version Dubbo 3.2.11 JDK 17 ### Steps to reproduce this issue 上线发布 Dubbo 服务提供者，服务提供者和消费者都只有一个POD实例 ### What you expected to happen _time_: 2024-05-16T10:17:12.878479339+08:00 content: 2024-05-16 10:17:12,877 ERROR [nacos.publisher-com.alibaba.nacos.client.naming.event.InstancesChangeEvent] [TRACEID:] [c.a.n.c.n.NotifyCenter:208]}: Event callback exception: java.lang.NullPointerException: null at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1693) ~[?:?] at org.apache.dubbo.registry.client.DefaultServiceInstance.toURL(DefaultServiceInstance.java:294) ~[dubbo-3.2.11.jar!/:3.2.11] at org.apache.dubbo.registry.client.event.listener.ServiceInstancesChangedListener.getServiceUrlsCache(ServiceInstancesChangedListener.java:407) ~[dubbo-3.2.11.jar!/:3.2.11] at org.apache.dubbo.registry.client.event.listener.ServiceInstancesChangedListener.lambda$doOnEvent$5(ServiceInstancesChangedListener.java:234) ~[dubbo-3.2.11.jar!/:3.2.11] at java.util.HashMap.computeIfAbsent(HashMap.java:1220) ~[?:?] at org.apache.dubbo.registry.client.event.listener.ServiceInstancesChangedListener.doOnEvent(ServiceInstancesChangedListener.java:232) ~[dubbo-3.2.11.jar!/:3.2.11] at org.apache.dubbo.registry.client.event.listener.ServiceInstancesChangedListener.onEvent(ServiceInstancesChangedListener.java:125) ~[dubbo-3.2.11.jar!/:3.2.11] at org.apache.dubbo.registry.nacos.NacosServiceDiscovery.handleEvent(NacosServiceDiscovery.java:245) ~[dubbo-3.2.11.jar!/:3.2.11] at org.apache.dubbo.registry.nacos.NacosServiceDiscovery.access$000(NacosServiceDiscovery.java:65) ~[dubbo-3.2.11.jar!/:3.2.11] at org.apache.dubbo.registry.nacos.NacosServiceDiscovery$NacosEventListener.onEvent(NacosServiceDiscovery.java:217) ~[dubbo-3.2.11.jar!/:3.2.11] at com.alibaba.nacos.client.naming.event.InstancesChangeNotifier.onEvent(InstancesChangeNotifier.java:126) ~[nacos-client-2.2.1.jar!/:?] at com.alibaba.nacos.client.naming.event.InstancesChangeNotifier.onEvent(InstancesChangeNotifier.java:42) ~[nacos-client-2.2.1.jar!/:?] at com.alibaba.nacos.common.notify.DefaultPublisher.lambda$notifySubscriber$0(DefaultPublisher.java:199) ~[nacos-client-2.2.1.jar!/:?] at com.alibaba.nacos.common.notify.DefaultPublisher.notifySubscriber(DefaultPublisher.java:206) [nacos-client-2.2.1.jar!/:?] at com.alibaba.nacos.common.notify.DefaultPublisher.receiveEvent(DefaultPublisher.java:190) [nacos-client-2.2.1.jar!/:?] at com.alibaba.nacos.common.notify.DefaultPublisher.openEventHandler(DefaultPublisher.java:112) [nacos-client-2.2.1.jar!/:?] at com.alibaba.nacos.common.notify.DefaultPublisher.run(DefaultPublisher.java:95) [nacos-client-2.2.1.jar!/:?] ### Anything else _No response_ ### Are you willing to submit a pull request to fix on your own? - [X] Yes I am willing to submit a pull request on my own! ### Code of Conduct - [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
