Github user haohui commented on the issue:
https://github.com/apache/flink/pull/3252
Updated the PR to recognize the `GROUP BY` clause instead of the `OVER`
clause.--- 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 [email protected] or file a JIRA ticket with INFRA. ---
