MImightyhops·Aug 2, 2018
This was a long and major effort, awesome to see it completed.
I believe the underlying issue holding Flink back from 2.12 support was also the ClosureCleaner taken from Spark[0].
[0] https://github.com/apache/flink/blob/dacc16b4fa6db6abfdbf73b...
In Apache Spark building on Scala 2.12