Environment

• Dubbo version: 2.7.x
• Operating System version: macos
• Java version: jre 1.8

Steps to reproduce this issue

1. provider export service by genericService.
2. set generic = false at consumer side.
3. consumer side can't handle methodName in GenericImplFilter, so rpc failed.

Expected Result

GenericKey should as GROUP_KEY, VERSION_KEY, If provider side contains it, use provider side's.