Github user sunjincheng121 commented on the issue: https://github.com/apache/flink/pull/3397 HI, @fhueske, Thank you for your attention to this JIRA. thanks! I agree that we need a few more iterations on this JIRA. make progress in each iteration and gradually perfect.I will remove the merge commit (the second one) and rebase the PR on the latest master after your merge PR.(#3370).(and I see you had done it) I think it's great if we Use special data type to identify the time mode. Some thing like `TimeCharacteristic.ProcessingTime` `TimeCharacteristic. EventTime`. I like this way. Best, SunJincheng
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