Github user tillrohrmann commented on the issue:
https://github.com/apache/flink/pull/6083
I agree with @dawidwys. We should use
`ConfluentRegistryAvroDeserializationSchema` for the test. It is ok that this
end-to-end test would then only go to Flink `1.6`. The benefit is that we only
need to address the test related comments.---
