[Q/A][Java SDK (Component)] dubbo samples error getMetadataInfo ArrayIndexOutOfBoundsException

[617076674]

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Apache Dubbo Component

Java Samples (apache/dubbo-samples)

Details

Recently, I am learning some demo in dubbo-samples project.

https://github.com/apache/dubbo-samples/tree/master/10-task/dubbo-samples-extensibility

I first started the dubbo-samples-extensibility-filter-provider by IntelliJ Idea, and then I started the dubbo-samples-extensibility-filter-consumer.

The provider is run successfully, but the consumer prints some error in remote call of method getMetadataInfo.

Here I put the log in this article.

Caused by: org.apache.dubbo.remoting.RemotingException: java.io.IOException: org.apache.dubbo.common.serialize.SerializationException: java.lang.ArrayIndexOutOfBoundsException: Index 221 out of bounds for length 221
java.io.IOException: org.apache.dubbo.common.serialize.SerializationException: java.lang.ArrayIndexOutOfBoundsException: Index 221 out of bounds for length 221
	at org.apache.dubbo.common.serialize.DefaultSerializationExceptionWrapper.handleToIOException(DefaultSerializationExceptionWrapper.java:358)
	at org.apache.dubbo.common.serialize.DefaultSerializationExceptionWrapper.access$000(DefaultSerializationExceptionWrapper.java:28)
	at org.apache.dubbo.common.serialize.DefaultSerializationExceptionWrapper$ProxyObjectInput.readObject(DefaultSerializationExceptionWrapper.java:177)
	at org.apache.dubbo.rpc.protocol.dubbo.DecodeableRpcResult.handleValue(DecodeableRpcResult.java:172)
	at org.apache.dubbo.rpc.protocol.dubbo.DecodeableRpcResult.decode(DecodeableRpcResult.java:110)
	at org.apache.dubbo.rpc.protocol.dubbo.DecodeableRpcResult.decode(DecodeableRpcResult.java:149)
	at org.apache.dubbo.remoting.transport.DecodeHandler.decode(DecodeHandler.java:62)
	at org.apache.dubbo.remoting.transport.DecodeHandler.received(DecodeHandler.java:50)
	at org.apache.dubbo.remoting.transport.dispatcher.ChannelEventRunnable.run(ChannelEventRunnable.java:62)
	at org.apache.dubbo.common.threadpool.ThreadlessExecutor$RunnableWrapper.run(ThreadlessExecutor.java:152)
	at org.apache.dubbo.common.threadpool.ThreadlessExecutor.waitAndDrain(ThreadlessExecutor.java:77)
	at org.apache.dubbo.rpc.AsyncRpcResult.get(AsyncRpcResult.java:205)
	at org.apache.dubbo.rpc.protocol.AbstractInvoker.waitForResultIfSync(AbstractInvoker.java:287)
	at org.apache.dubbo.rpc.protocol.AbstractInvoker.invoke(AbstractInvoker.java:190)
	at org.apache.dubbo.rpc.proxy.InvocationUtil.invoke(InvocationUtil.java:61)
	at org.apache.dubbo.rpc.proxy.InvokerInvocationHandler.invoke(InvokerInvocationHandler.java:75)
	at org.apache.dubbo.metadata.MetadataServiceDubboProxy1.getMetadataInfo(MetadataServiceDubboProxy1.java)
	at org.apache.dubbo.registry.client.metadata.MetadataUtils.getRemoteMetadata(MetadataUtils.java:173)
	at org.apache.dubbo.registry.client.AbstractServiceDiscovery.lambda$getRemoteMetadata$2(AbstractServiceDiscovery.java:229)
	at org.apache.dubbo.metrics.event.MetricsEventBus.post(MetricsEventBus.java:86)
	at org.apache.dubbo.registry.client.AbstractServiceDiscovery.getRemoteMetadata(AbstractServiceDiscovery.java:228)
	at org.apache.dubbo.registry.client.event.listener.ServiceInstancesChangedListener.lambda$doOnEvent$2(ServiceInstancesChangedListener.java:162)
	at java.base/java.util.Optional.orElseGet(Optional.java:364)
	at org.apache.dubbo.registry.client.event.listener.ServiceInstancesChangedListener.doOnEvent(ServiceInstancesChangedListener.java:162)
	at org.apache.dubbo.registry.client.event.listener.ServiceInstancesChangedListener.onEvent(ServiceInstancesChangedListener.java:116)
	at org.apache.dubbo.registry.client.ServiceDiscoveryRegistry.subscribeURLs(ServiceDiscoveryRegistry.java:320)
	at org.apache.dubbo.registry.client.ServiceDiscoveryRegistry.doSubscribe(ServiceDiscoveryRegistry.java:225)
	at org.apache.dubbo.registry.client.ServiceDiscoveryRegistry.subscribe(ServiceDiscoveryRegistry.java:187)
	at org.apache.dubbo.registry.ListenerRegistryWrapper.subscribe(ListenerRegistryWrapper.java:88)
	at org.apache.dubbo.registry.integration.DynamicDirectory.subscribe(DynamicDirectory.java:184)
	at org.apache.dubbo.registry.client.ServiceDiscoveryRegistryDirectory.subscribe(ServiceDiscoveryRegistryDirectory.java:140)
	at org.apache.dubbo.registry.integration.RegistryProtocol.doCreateInvoker(RegistryProtocol.java:629)
	at org.apache.dubbo.registry.integration.InterfaceCompatibleRegistryProtocol.getServiceDiscoveryInvoker(InterfaceCompatibleRegistryProtocol.java:65)
	at org.apache.dubbo.registry.client.migration.MigrationInvoker.refreshServiceDiscoveryInvoker(MigrationInvoker.java:440)
	at org.apache.dubbo.registry.client.migration.MigrationInvoker.migrateToApplicationFirstInvoker(MigrationInvoker.java:246)
	at org.apache.dubbo.registry.client.migration.MigrationRuleHandler.refreshInvoker(MigrationRuleHandler.java:76)
	at org.apache.dubbo.registry.client.migration.MigrationRuleHandler.doMigrate(MigrationRuleHandler.java:60)
	at org.apache.dubbo.registry.client.migration.MigrationRuleListener.onRefer(MigrationRuleListener.java:249)
	at org.apache.dubbo.registry.integration.RegistryProtocol.interceptInvoker(RegistryProtocol.java:594)
	at org.apache.dubbo.registry.integration.RegistryProtocol.doRefer(RegistryProtocol.java:564)
	at org.apache.dubbo.registry.integration.RegistryProtocol.refer(RegistryProtocol.java:546)
	at org.apache.dubbo.rpc.protocol.ProtocolSecurityWrapper.refer(ProtocolSecurityWrapper.java:110)
	at org.apache.dubbo.qos.protocol.QosProtocolWrapper.refer(QosProtocolWrapper.java:85)
	at org.apache.dubbo.rpc.protocol.ProtocolListenerWrapper.refer(ProtocolListenerWrapper.java:80)
	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.InvokerCountWrapper.refer(InvokerCountWrapper.java:48)
	at org.apache.dubbo.rpc.Protocol$Adaptive.refer(Protocol$Adaptive.java)
	at org.apache.dubbo.config.ReferenceConfig.createInvoker(ReferenceConfig.java:620)
	at org.apache.dubbo.config.ReferenceConfig.createProxy(ReferenceConfig.java:466)
	at org.apache.dubbo.config.ReferenceConfig.init(ReferenceConfig.java:353)
	at org.apache.dubbo.config.ReferenceConfig.get(ReferenceConfig.java:238)
	at org.apache.dubbo.config.utils.SimpleReferenceCache.get(SimpleReferenceCache.java:132)
	at org.apache.dubbo.config.deploy.DefaultModuleDeployer.lambda$referServices$6(DefaultModuleDeployer.java:495)
	at java.base/java.util.concurrent.ConcurrentHashMap$ValuesView.forEach(ConcurrentHashMap.java:4780)
	at org.apache.dubbo.config.deploy.DefaultModuleDeployer.referServices(DefaultModuleDeployer.java:475)
	at org.apache.dubbo.config.deploy.DefaultModuleDeployer.startSync(DefaultModuleDeployer.java:176)
	at org.apache.dubbo.config.deploy.DefaultModuleDeployer.start(DefaultModuleDeployer.java:148)
	at org.apache.dubbo.config.spring.context.DubboDeployApplicationListener.onContextRefreshedEvent(DubboDeployApplicationListener.java:155)
	at org.apache.dubbo.config.spring.context.DubboDeployApplicationListener.onApplicationEvent(DubboDeployApplicationListener.java:141)
	at org.apache.dubbo.config.spring.context.DubboDeployApplicationListener.onApplicationEvent(DubboDeployApplicationListener.java:52)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:176)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:169)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:143)
	at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:413)
	at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:370)
	at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:937)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:587)
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:732)
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:434)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:310)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1304)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1293)
	at org.apache.dubbo.samples.extensibility.filter.consumer.ExtensibilityFilterConsumerApplication.main(ExtensibilityFilterConsumerApplication.java:25)
Caused by: org.apache.dubbo.common.serialize.SerializationException: java.lang.ArrayIndexOutOfBoundsException: Index 221 out of bounds for length 221
	... 74 more
Caused by: java.lang.ArrayIndexOutOfBoundsException: Index 221 out of bounds for length 221
	at com.alibaba.fastjson2.JSONReaderJSONB.skipValue(JSONReaderJSONB.java:2317)
	at com.alibaba.fastjson2.reader.ObjectReaderBean.processExtra(ObjectReaderBean.java:121)
	at com.alibaba.fastjson2.reader.ORG_1_12_MetadataInfo.readJSONBObject(Unknown Source)
	at com.alibaba.fastjson2.JSONB.parseObject(JSONB.java:540)
	at org.apache.dubbo.common.serialize.fastjson2.FastJson2ObjectInput.readObject(FastJson2ObjectInput.java:149)
	at org.apache.dubbo.common.serialize.DefaultSerializationExceptionWrapper$ProxyObjectInput.readObject(DefaultSerializationExceptionWrapper.java:175)
	... 71 more

	at org.apache.dubbo.remoting.exchange.support.DefaultFuture.doReceived(DefaultFuture.java:249) ~[dubbo-3.2.6.jar:3.2.6]
	at org.apache.dubbo.remoting.exchange.support.DefaultFuture.received(DefaultFuture.java:200) ~[dubbo-3.2.6.jar:3.2.6]
	at org.apache.dubbo.remoting.exchange.support.DefaultFuture.received(DefaultFuture.java:188) ~[dubbo-3.2.6.jar:3.2.6]
	at org.apache.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.handleResponse(HeaderExchangeHandler.java:65) ~[dubbo-3.2.6.jar:3.2.6]
	at org.apache.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.received(HeaderExchangeHandler.java:206) ~[dubbo-3.2.6.jar:3.2.6]
	at org.apache.dubbo.remoting.transport.DecodeHandler.received(DecodeHandler.java:53) ~[dubbo-3.2.6.jar:3.2.6]
	at org.apache.dubbo.remoting.transport.dispatcher.ChannelEventRunnable.run(ChannelEventRunnable.java:62) ~[dubbo-3.2.6.jar:3.2.6]
	at org.apache.dubbo.common.threadpool.ThreadlessExecutor$RunnableWrapper.run(ThreadlessExecutor.java:152) ~[dubbo-3.2.6.jar:3.2.6]
	at org.apache.dubbo.common.threadpool.ThreadlessExecutor.waitAndDrain(ThreadlessExecutor.java:77) ~[dubbo-3.2.6.jar:3.2.6]
	at org.apache.dubbo.rpc.AsyncRpcResult.get(AsyncRpcResult.java:205) ~[dubbo-3.2.6.jar:3.2.6]
	at org.apache.dubbo.rpc.protocol.AbstractInvoker.waitForResultIfSync(AbstractInvoker.java:287) ~[dubbo-3.2.6.jar:3.2.6]
	... 61 more

I am not sure why this problems occurs. Is there anyone find the same problem as me?

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[617076674]

I find why and discuss this in a new article:

[Bug] dubbo samples extensibility filter ArrayIndexOutOfBoundsException