Github user vasia commented on the pull request: https://github.com/apache/flink/pull/1425#issuecomment-161003995 Hi @aljoscha, thanks for fixing this! It seems that, with this change, when you union a stream with itself you get each element twice. If this is intentional, could you please also update the docs?
--- 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. ---