Re: emit partial state in window (streaming)

Posted by Fabian Hueske-2 on
URL: http://deprecated-apache-flink-user-mailing-list-archive.369.s1.nabble.com/emit-partial-state-in-window-streaming-tp9759p9760.html

Hi Luis,

these blogposts should help you with the periodic partial result trigger [1] [2].

Regarding the second question:
Time windows are by default aligned to 1970-01-01-00:00:00.
So a 24 hour window will always start at 00:00.

Best, Fabian

[1] http://flink.apache.org/news/2015/12/04/Introducing-windows.html
[2] https://www.mapr.com/blog/essential-guide-streaming-first-processing-apache-flink

2016-10-27 16:31 GMT+02:00 Luis Mariano Guerra <[hidden email]>:

hi,

 I need to calculate some counts for the day but also emit the partial counts periodically, I think triggers may help me, I'm searching around but there's not much content about it, any tip?

for example I'm counting access by location to different services, I want to accumulate access during the whole day, but I want to emit the partial count every 5 minutes.

one slightly related question, is there a way to align a window to a day? for example a 24 hour window that starts at 00:00.

thanks.