Github user ggevay commented on the pull request: https://github.com/apache/flink/pull/1517#issuecomment-181437507 I have added the strategy hint. At the moment, it defaults to sorting, but I couldn't actually find any case where hashing is slower, and it is often about 2 times faster.
--- 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. ---