Hi,
This new section in the windowing documentation will help answer your question:
https://ci.apache.org/projects/flink/flink-docs-release-1.4/dev/stream/operators/windows.html#working-with-window-results
<https://ci.apache.org/projects/flink/flink-docs-release-1.4/dev/stream/operators/windows.html#working-with-window-results>
Please let me know if you have any further questions. :-)
Best,
Aljoscha
> On 8. Nov 2017, at 18:54, Derek VerLee <derekver...@gmail.com> wrote:
>
> When composing ("chaining") multiple windowing operations on the same
> stream are watermarks transmitted down stream after window evaluation,
> and are the records emitted from WindowFunctions given timestamps? Do I
> need to or should I always assignTimestampsAndWatermarks to the
> outputsof window evaluations if I want to window again? If automatically
> assigned, how should I think about them in an event time context? Would
> the event time of a record resulting from a WindowFunction be the
> window's end time in the case of a TimeWindow?
>
