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From Dominik Choma <dominik.ch...@gmail.com>
Subject Re: Understanding Sliding Windows
Date Tue, 26 Apr 2016 15:24:03 GMT
Piyush,

You created sliding window witch is triggered every 10 seconds
Flink fires up this window every 10 seconds, without waiting at 5 min
buffer to be filled up
It seems to me that first argument is rather "maximum data buffer
retention" than " the initial threshold"

Dominik



Dominik

2016-04-26 12:16 GMT+02:00 Piyush Shrivastava <piyushjoy@yahoo.co.in>:

> Hi all,
> I wanted to know how exactly sliding windows produce results in Flink.
> Suppose I create a sliding window of 5 minutes which is refreshed in every
> 10 seconds:
>
> .timeWindow(Time.minutes(5), Time.seconds(10))
>
> So in every 10 seconds we are looking at data from the past 5 minutes. But
> what happens before the initial 5 minutes have passed?
> Suppose we start the computation at 10:00. At 10:05 we will get the result
> for 10:00-10:05. But what are the results which we get in between this?
> i.e. at 10:00:10, 10:00:20 and so on.
> Basically why do Flink start producing results before the initial
> threshold has passed? What do these results signify?
>
> Thanks and Regards,
> Piyush Shrivastava <piyush@webograffiti.com>
> [image: WeboGraffiti]
> http://webograffiti.com
>

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