reta edited a comment on pull request #721:
URL: https://github.com/apache/cxf/pull/721#issuecomment-734015021
@dufoli seems to be the issue with multiple buses (consequences of running
multiple test cases in one JVM), the culprit is `ClassGeneratorClassLoader`,
which has many subclasses, fe `WrapperClassGenerator`,
`ExtensionClassGenerator`, so what is happening is that each test case creates
own `TypeHelperClassLoader` & generate classes but at the same time sees the
classes generated by previously instantiated `TypeHelperClassLoader` from
preceding test case (I can see that very well in the
WrapperClassInInterceptor::handleMessage,
`wrappedObject.getClass().getClassloader()` !=
`helper.getClass().getClassloader()`), when you run the test case in isolation
- no issues.
At this point we may need to resurrect I believe:
```
protected static final Map<ClassLoader,
WeakReference<TypeHelperClassLoader>> LOADER_MAP
= new WeakIdentityHashMap<>();
protected static final Map<Class<?>,
WeakReference<TypeHelperClassLoader>> CLASS_MAP
= new WeakIdentityHashMap<>();
```
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