Github user fhueske commented on the issue:
https://github.com/apache/flink/pull/3459
Hi @huawei-flink,
most Maven modules in Flink are implemented in either Java or Scala. We
have a few modules (like flink-runtime) which are mixed but didn't make good
experience with this design. Also, there is a clear separation in these modules
which components are implemented in Java and Scala. I think implementing the
flink-table module in a mix of Java and Scala is not a good idea because it
makes the maintenance more difficult than sticking to a single language.
Regarding the squashing. I think the best approach is to create a new
branch based on the current master and manually copying over those files that
you would like to keep. Most of the code should be new files, so this should
not be too much effort. By using the first OVER window as a blueprint I meant
that you should try to follow a similar approach by using the same utils and a
similar design. IMO, it makes sense if similar features share as much code as
possible and follow the same design.
Best, Fabian
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