Github user mikedias commented on the issue:
https://github.com/apache/flink/pull/2767
No, ES is not backward compatible... But we can reuse some classes or
interfaces between versions. I have plans to do this in another PR, just for
isolate possible issues.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
