Yes, sliding windows are different. You want to evaluate the window whenever a new element arrives or an element leaves because 5 secs passed since it entered the window, right?
I think that should be possible with a GlobalWindow, a custom Trigger which holds state about the time when each element in the window entered the window, and an Evictor. 2016-04-21 21:19 GMT+02:00 Jonathan Yom-Tov <jon.yom...@gmail.com>: > I think sliding windows are different. In the example in the blog post a > window is computed every 30 seconds (so at fixed time intervals). What I > want is for a window to be computed every time an event comes in and then > once again when the event leaves the window. > > On Thu, Apr 21, 2016 at 10:14 PM, John Sherwood <j...@vt.edu> wrote: > >> You are looking for sliding windows: >> https://flink.apache.org/news/2015/12/04/Introducing-windows.html >> >> Here you would do >> >> .timeWindow(Time.seconds(5), Time.seconds(1)) >> >> On Thu, Apr 21, 2016 at 12:06 PM, Jonathan Yom-Tov <jon.yom...@gmail.com> >> wrote: >> >>> hi, >>> >>> Is it possible to implement a continuous time window with flink? Here's >>> an >>> example. Say I want to count events within a window. The window length >>> is 5 >>> seconds and I get events at t = 1, 2, 7, 8 seconds. I would then expect >>> to >>> get events with a count at t = 1 (count = 1), t = 2 (count = 2), t = 6 >>> (count = 1), t = 7 (count = 2), t = 8 (count = 2), t = 12 (count = 1) >>> and t >>> = 13 (count = 0). >>> >>> How would I go about doing that?. >>> >>> thanks, >>> Jon. >>> >> >> >
