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Posted to notifications@dubbo.apache.org by GitBox <gi...@apache.org> on 2022/08/15 04:09:42 UTC
[GitHub] [dubbo] DaleShay opened a new issue, #10461: dubbo.provider.serialization=java 时。MetadataInfo initiated 空指针 导致启动报错
DaleShay opened a new issue, #10461:
URL: https://github.com/apache/dubbo/issues/10461
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### Environment
* Dubbo version: 3.0.10
* Operating System version: MacOS
* Java version: 1.8
### Steps to reproduce this issue
1. 服务端配置 dubbo.provider.serialization = java 。启动服务端
2. 启动客户端 （客户端配置 protocol.serialization = java 和 provider.serialization = java 好像都不影响结果）
Pls. provide [GitHub address] to reproduce this issue.
### Expected Behavior
正常启动
<!-- What do you expect from the above steps？-->
### Actual Behavior
启动报空指针
If there is an exception, please attach the exception trace:
```
java.lang.NullPointerException
at org.apache.dubbo.metadata.MetadataInfo.init(MetadataInfo.java:113)
at org.apache.dubbo.registry.client.AbstractServiceDiscovery.getRemoteMetadata(AbstractServiceDiscovery.java:172)
at org.apache.dubbo.registry.client.event.listener.ServiceInstancesChangedListener.doOnEvent(ServiceInstancesChangedListener.java:152)
at org.apache.dubbo.registry.client.event.listener.ServiceInstancesChangedListener.onEvent(ServiceInstancesChangedListener.java:112)
at org.apache.dubbo.registry.client.ServiceDiscoveryRegistry.subscribeURLs(ServiceDiscoveryRegistry.java:316)
at org.apache.dubbo.registry.client.ServiceDiscoveryRegistry.doSubscribe(ServiceDiscoveryRegistry.java:216)
at org.apache.dubbo.registry.client.ServiceDiscoveryRegistry.subscribe(ServiceDiscoveryRegistry.java:184)
at org.apache.dubbo.registry.ListenerRegistryWrapper.subscribe(ListenerRegistryWrapper.java:111)
at org.apache.dubbo.registry.integration.DynamicDirectory.subscribe(DynamicDirectory.java:180)
at org.apache.dubbo.registry.client.ServiceDiscoveryRegistryDirectory.subscribe(ServiceDiscoveryRegistryDirectory.java:108)
at org.apache.dubbo.registry.integration.RegistryProtocol.doCreateInvoker(RegistryProtocol.java:570)
at org.apache.dubbo.registry.integration.InterfaceCompatibleRegistryProtocol.getServiceDiscoveryInvoker(InterfaceCompatibleRegistryProtocol.java:65)
at org.apache.dubbo.registry.client.migration.MigrationInvoker.refreshServiceDiscoveryInvoker(MigrationInvoker.java:436)
at org.apache.dubbo.registry.client.migration.MigrationInvoker.migrateToApplicationFirstInvoker(MigrationInvoker.java:244)
at org.apache.dubbo.registry.client.migration.MigrationRuleHandler.refreshInvoker(MigrationRuleHandler.java:73)
at org.apache.dubbo.registry.client.migration.MigrationRuleHandler.doMigrate(MigrationRuleHandler.java:57)
at org.apache.dubbo.registry.client.migration.MigrationRuleListener.onRefer(MigrationRuleListener.java:243)
at org.apache.dubbo.registry.integration.RegistryProtocol.interceptInvoker(RegistryProtocol.java:535)
at org.apache.dubbo.registry.integration.RegistryProtocol.doRefer(RegistryProtocol.java:505)
at org.apache.dubbo.registry.integration.RegistryProtocol.refer(RegistryProtocol.java:487)
at org.apache.dubbo.qos.protocol.QosProtocolWrapper.refer(QosProtocolWrapper.java:78)
at org.apache.dubbo.rpc.protocol.ProtocolListenerWrapper.refer(ProtocolListenerWrapper.java:74)
at org.apache.dubbo.rpc.cluster.filter.ProtocolFilterWrapper.refer(ProtocolFilterWrapper.java:71)
at org.apache.dubbo.rpc.protocol.ProtocolSerializationWrapper.refer(ProtocolSerializationWrapper.java:52)
at org.apache.dubbo.rpc.Protocol$Adaptive.refer(Protocol$Adaptive.java)
at org.apache.dubbo.config.ReferenceConfig.createInvokerForRemote(ReferenceConfig.java:520)
at org.apache.dubbo.config.ReferenceConfig.createProxy(ReferenceConfig.java:423)
at org.apache.dubbo.config.ReferenceConfig.init(ReferenceConfig.java:288)
at org.apache.dubbo.config.ReferenceConfig.get(ReferenceConfig.java:220)
at org.apache.dubbo.config.utils.SimpleReferenceCache.destroyReference(SimpleReferenceCache.java:262)
at org.apache.dubbo.config.utils.SimpleReferenceCache.destroy(SimpleReferenceCache.java:215)
at org.apache.dubbo.config.utils.SimpleReferenceCache.destroy(SimpleReferenceCache.java:239)
at org.apache.dubbo.config.deploy.DefaultModuleDeployer.lambda$referServices$6(DefaultModuleDeployer.java:388)
at java.util.concurrent.ConcurrentHashMap$ValuesView.forEach(ConcurrentHashMap.java:4707)
at org.apache.dubbo.config.deploy.DefaultModuleDeployer.referServices(DefaultModuleDeployer.java:363)
at org.apache.dubbo.config.deploy.DefaultModuleDeployer.start(DefaultModuleDeployer.java:154)
at org.apache.dubbo.config.spring.context.DubboDeployApplicationListener.onContextRefreshedEvent(DubboDeployApplicationListener.java:111)
at org.apache.dubbo.config.spring.context.DubboDeployApplicationListener.onApplicationEvent(DubboDeployApplicationListener.java:100)
at org.apache.dubbo.config.spring.context.DubboDeployApplicationListener.onApplicationEvent(DubboDeployApplicationListener.java:45)
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:404)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:361)
at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:898)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:554)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226)
at org.apache.dubbo.springboot.demo.consumer.ConsumerApplication.main(ConsumerApplication.java:39)
```
可能的原因和截图
MetadataInfo 将 initiated 字段设置为 transient
private transient AtomicBoolean initiated = new AtomicBoolean(false);
MetaUtils 170行
<img width="1042" alt="image" src="https://user-images.githubusercontent.com/39309978/184575283-aca17799-c0fd-47c2-8596-718c252ce895.png">
AbstractServiceDiscovery 从本地文件或远程 获取 metadata 后 init 。 initiated 为null
<img width="784" alt="image" src="https://user-images.githubusercontent.com/39309978/184575545-5838e4e2-775e-42d7-826e-80e576c427d6.png">
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[GitHub] [dubbo] CrazyHZM closed issue #10461: dubbo.provider.serialization=java 时。MetadataInfo initiated 空指针 导致启动报错
Posted by GitBox <gi...@apache.org>.
CrazyHZM closed issue #10461: dubbo.provider.serialization=java 时。MetadataInfo initiated 空指针 导致启动报错
URL: https://github.com/apache/dubbo/issues/10461
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