pan3793 opened a new pull request, #4688: URL: https://github.com/apache/zeppelin/pull/4688
### What is this PR for? This PR proposes to remove the support for old Flink 1.13 and 1.14. The current [Flink Download Page](https://flink.apache.org/downloads) only lists 1.16, 1.17, 1.18, and the community is discussing the [final release of 1.16 called 1.16.3](https://www.mail-archive.com/dev@flink.apache.org/msg71005.html) Also, there are major differences in the implementation at the Zeppelin side for Flink prior to 1.15 and later versions. Thus, I suggest removing the support for old Flink 1.13 and 1.14 at this time. Note: this PR focuses on build and docs changes, we can do code cleanup in the following PRs, e.g. - merge the `flink-scala-2.12` and `flink-scala-parents` since Flink community decided to make the project scala-free instead of supporting new versions of scala in the future; - remove code for earlier versions of flink ### What type of PR is it? Improvement ### Todos * [ ] - Task ### What is the Jira issue? ZEPPELIN-5978 ### How should this be tested? Pass GA ### Screenshots (if appropriate) ### Questions: * Does the license files need to update? No * Is there breaking changes for older versions? Yes, it removes the support for some old versions of Flink * Does this needs documentation? Updated corresponddingly -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: reviews-unsubscr...@zeppelin.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org