eaglewatcherwb commented on issue #7436: [FLINK-11071][core] add support for 
dynamic proxy classes resolution …
URL: https://github.com/apache/flink/pull/7436#issuecomment-455054189
 
 
   > Thanks for the contribution @eaglewatcherwb .
   > 
   > I don't think we should introduce incompatibilities with that change. 
Having two different versions of an interface is a problem in the first place. 
If it occurs the solution would be just to simple leave only one version of the 
proxy.
   > 
   > @eaglewatcherwb I don't think we should change `SocketWindowWordCount` 
example at all. I would prefer to see a proper unit test for those changes. You 
can check 
`org.apache.flink.runtime.classloading.ClassLoaderTest#testMessageDecodingWithUnavailableClass`
 for inspiration.
   
   @dawidwys Thanks for the comment.
   "leave only one version of the proxy." do you mean 
`ClassLoaderObjectInputStream.resolveProxyClass `not call 
`super.resolveProxyClass` and just return `null` when `classLoader==null` ?

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