The documentation of how Flink handles event time and watermarks is spread across several places. I've been wanting a single location that summarizes the subject, and as none was available, I wrote one up.
You can find it here: https://docs.google.com/document/d/1b5d-hTdJQsPH3YD0zTB4ZqodinZVHFomKvt41FfUPMc/edit?usp=sharing I'd appreciate feedback, particularly about the correctness of the described behavior.
