Github user cjolif commented on the issue:
https://github.com/apache/flink/pull/6043
Overall I think the most important thing to do is do something :) We can't
let Flink elasticsearch in the broken state they are today. There must either
be a purely REST-based solution or make sure the current code path is working
and allowing people to build a REST-based solution if they want to on top of it.---
