BakaCoder

Also facing the same problem, is this going to be picked up anytime soon?

@fuhuoyeyou @tg2018 I resolved this by setting `` to `none`

@dehora In order to break down this PR, I have made a small [PR](https://github.com/dehora/nakadi-java/pull/378) that deals solely with abstracting payload serialization logic.

seems like 422 (atleast one event failed validation) is excluded from retrying so the scenario I described is reduced to 401/403