Re: Windowing and Aggregation across windows

[saket kothari <sa...@gmail.com>]

Can someone please help here?


Thanks and Regards
Saket

On Fri, Apr 30, 2021 at 8:31 PM saket kothari <sa...@gmail.com> wrote:

> Does aggregation happen per window..what if I want to use the agg result
> of a prev window on the next window?Is it possible?
>
> I have a one second window  with grace period 5 mins..
> When my first window expires , it will have some aggregate value and store
> it to another topic.
> Now, when my second window expires, I want it to add the first window aggr
> + second window agg and then store it in another topic.
>
> Similarly when my third window expires, I want to add its own aggr +
> overall agg till now(here, 1st window + 2nd window) and then store in
> another topic.
>
> Is this possible in kafka streams?
>
> Also will window expiration occur in the same order?Like 1st window
> expires first, then second,then third and so on..
>
>
> Thanks and Regards
>
> Saket
>