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### Environment * Dubbo version: 2.7.4.1 * Operating System version: macos, linux * Java version: 1.8 ### 背景 这个issue不是正常的使用场景下产生的啊... 我在做一个 dubbo 的[压测工具](https://github.com/asura-pro/pea) , 要在 JVM 不退出的情况下 重载 dubbo 的接口class. 如: [GreetingService](https://github.com/asura-pro/pea-simulations/blob/master/ext-library/src/main/java/pea/example/ext/dubbo/api/GreetingService.java) ```java public interface GreetingService { String sayHello(String name); HelloResponse sayHello2(String name); } ``` ### 现象 第一次调用时 `HelloResponse` 返回正常，类加载器是: [pea.app.compiler.ReloadableClassLoader](https://github.com/asura-pro/pea/blob/master/app/pea/app/compiler/ReloadableClassLoader.scala) (这个是我自定义的类加载器, 每次调用都会是新的)。 之后的调用就会报异常: ``` [error] p.d.a.DubboAction - failure: ==========> java.lang.ClassCastException: pea.example.ext.dubbo.response.HelloResponse cannot be cast to pea.example.ext.dubbo.response.HelloResponse at org.apache.dubbo.common.bytecode.proxy1.sayHello2(proxy1.java) at pea.example.dubbo.GreetingSimulation.$anonfun$scn$1(GreetingSimulation.scala:23) at pea.dubbo.action.DubboAction.$anonfun$execute$1(DubboAction.scala:43) at scala.concurrent.Future$.$anonfun$apply$1(Future.scala:658) at scala.util.Success.$anonfun$map$1(Try.scala:255) at scala.util.Success.map(Try.scala:213) ``` ### 问题 这个问题大概是怎么产生的啊？为啥第一调用没事, 代理类返回的 `HelloResponse`是不是有缓存啊之类的？如果有怎么清掉？ [ Full content available at: https://github.com/apache/dubbo/issues/5545 ] This message was relayed via gitbox.apache.org for [email protected]
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