Github user StephanEwen commented on the issue:
https://github.com/apache/flink/pull/3231
@billliuatuber Since the dependency management section in the root
`pom.xml` defines the Scala version for all sub-modules, I think this change is
not needed.
If you agree, could you close the pull request?
If you think I am overlooking something, please let me know!
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