flink-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Aljoscha Krettek <aljos...@apache.org>
Subject Re: Firing windows multiple times
Date Wed, 14 Sep 2016 08:10:18 GMT
Hi,
yes AJ that observation is correct. Let's see what Shannon has to say about
this but it might be that all "higher-level" aggregates will have to be
based on the first level and can then update at the speed of that aggregate.

Cheers,
Aljoscha

On Mon, 12 Sep 2016 at 05:03 aj.h <drfloob@gmail.com> wrote:

> In the way that FLIP-2 would solve this problem, secondAggregate would
> ignore
> the early firing updates from firstAggregate to prevent double-counting,
> correct? If that's the case, I am trying to understand why we'd want to
> trigger early-fires every 30 seconds for the secondAggregate if it's only
> accepting new results at a daily rate, after firstAggregate's primary
> firing
> at the end of the window. If we filter out results from early-fires,
> wouldn't every 30-second result from secondAggregate remain unchanged
> within
> the same 1-day window?
>
> Similarly (compounded) for a 365-day window aggregating over a 30 day
> window: if it filters out early fires, wouldn't it only produce new/unique
> results every 30 days?
>
> I very well may have misunderstood this solution.
>
>
>
> --
> View this message in context:
> http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Firing-windows-multiple-times-tp8424p8994.html
> Sent from the Apache Flink User Mailing List archive. mailing list archive
> at Nabble.com.
>

Mime
View raw message