To clarify one thing: keep in mind that Flink does not support per-key
watermarks. Watermarks are typically generated per-source, or in the case
of kafka, can be per-partition. An idle source (or in the case of kafka, an
idle partition) can prevent an event-time window from being triggered, but
you
Yes in many cases what we have faced that let's say in a keyed stream an
element of a specific key comes in which triggers a new window. If a
corresponding elements of the same key does not arrive a new watermark is
not generated for the window to purge. Then we faced issues with flink
keeping reco
Hi Taher,
For some questions, I suggest you read the documentation related to Flink
EventTime first, for example [1]
About this question:
What happens if the watermark is same as the timestamp?
Here "timestamp", do you mean the current timestamp of Processing time? If
that's the best, it's an id
Hi All,
Can someone show a good example of how watermarks need to be
generated when using EventTime windows? What happens if the watermark is
same as the timestamp? How does the watermark help in the window to be
triggered and what if watermarks are kept behind the currentTimestamps in
