Holmesus opened a new issue #9086: URL: https://github.com/apache/dubbo/issues/9086
<!-- If you need to report a security issue please visit https://github.com/apache/dubbo/security/policy --> - [ ] I have searched the [issues](https://github.com/apache/dubbo/issues) of this repository and believe that this is not a duplicate. ### Environment * Dubbo version: 2.7.13 * Operating System version: Mac OS、Linux * Java version: 1.8 * 方法名 org.apache.dubbo.metadata.MetadataInfo.ServiceInfo#getMethodParameter(java.lang.String, java.lang.String, java.lang.String) ### Steps to reproduce this issue 出问题的代码 if (methodParams == null) { methodParams = URL.toMethodParameters(params); consumerMethodParams = URL.toMethodParameters(consumerParams); } 修改为 Map<String, Map<String, String>> temp = methodParams; if (methodParams == null) { methodParams = URL.toMethodParameters(params); if(temp == null){ try { Thread.sleep(1000*3); } catch (InterruptedException e) { e.printStackTrace(); } } consumerMethodParams = URL.toMethodParameters(consumerParams); } 1. 多线程问题较难复现，采用修改代码的形式模拟 2. 修改代码 3. 在sleep的时间内进行两次请求，第一个请求进入sleep，第二个请求出现空指针异常 ### Expected Behavior 正常执行 ### Actual Behavior 由于methodParams已经不为空，consumerMethodParams没有被初始化，执行到342行代码时发生空指针 ``` Caused by: java.lang.NullPointerException: null at org.apache.dubbo.metadata.MetadataInfo$ServiceInfo.getMethodParameter(MetadataInfo.java:353) at org.apache.dubbo.metadata.MetadataInfo$ServiceInfo.getMethodParameter(MetadataInfo.java:344) at org.apache.dubbo.registry.client.InstanceAddressURL.getServiceMethodParameter(InstanceAddressURL.java:143) at org.apache.dubbo.registry.client.InstanceAddressURL.getMethodParameter(InstanceAddressURL.java:156) at org.apache.dubbo.common.URL.getMethodParameter(URL.java:881) at org.apache.dubbo.rpc.cluster.support.AbstractClusterInvoker.initLoadBalance(AbstractClusterInvoker.java:314) at org.apache.dubbo.rpc.cluster.support.AbstractClusterInvoker.invoke(AbstractClusterInvoker.java:263) at org.apache.dubbo.rpc.cluster.interceptor.ClusterInterceptor.intercept(ClusterInterceptor.java:47) at org.apache.dubbo.rpc.cluster.support.wrapper.AbstractCluster$InterceptorInvokerNode.invoke(AbstractCluster.java:92) at org.apache.dubbo.rpc.cluster.support.wrapper.MockClusterInvoker.invoke(MockClusterInvoker.java:93) at org.apache.dubbo.registry.client.migration.ServiceDiscoveryMigrationInvoker.invoke(ServiceDiscoveryMigrationInvoker.java:59) at org.apache.dubbo.rpc.proxy.InvokerInvocationHandler.invoke(InvokerInvocationHandler.java:96) at org.apache.dubbo.common.bytecode.proxy1.sayHello(proxy1.java) at com.sftech.component.DemoServiceComponent.sayHello(DemoServiceComponent.java:41)``` -- 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]
