Hi Community, In Beam programming guide [1], there is a sentence: "Data that arrives with a timestamp after the watermark is considered *late data*"
Seems like people get confused by it. For example, see Stackoverflow comment [2]. Basically it makes people think that a event timestamp that is bigger than watermark is considered late (due to that "after"). Although there is a example right after this sentence to explain late data, seems to me that this sentence is incomplete. The complete sentence to me can be: "The watermark consistently advances from -inf to +inf. Data that arrives with a timestamp after the watermark is considered late data." Am I understand correctly? Is there better description for the order of late data and watermark? I would happy to send PR to update Beam documentation. -Rui [1]: https://beam.apache.org/documentation/programming-guide/#windowing [2]: https://stackoverflow.com/questions/54141352/dataflow-to-process-late-and-out-of-order-data-for-batch-and-stream-messages/54188971?noredirect=1#comment95302476_54188971
