Re: Sliding window based on event arrival

[Miyuru Dayarathna]

Hi Xingcan,
Thanks for the clarification. I was able to implement the scenario with the 
example you provided.
Thanks,Miyuru
 

On Monday, 12 March 2018, 12:53, Xingcan Cui  wrote:
 

 Hi Miyuru,
what you need should be something like a `SlidingCountWindow`. Flink Datastream 
API has already provided a `countWindow()` method for that and a related 
example can be found here.
Hope that helps,Xingcan


On 12 Mar 2018, at 1:33 PM, Miyuru Dayarathna  wrote:
Hi,
I need to create a sliding window of 4 events in Flink streaming application. 
The window should slide by one event per every new arriving event. Furthermore, 
per each new arriving event I need to calculate the aggregate sum of a 
particular field in the 4 events I have in the window. I have referred [1] 
which describes how this can be implemented based on time. But my use case if 
little different, hence I am wondering how the window can be slided when a new 
event gets added to the window.
[1] 
https://ci.apache.org/projects/flink/flink-docs-release-1.4/dev/stream/operators/windows.html#sliding-windows

Thanks,Miyuru




   

Re: Sliding window based on event arrival

[Xingcan Cui]

Hi Miyuru,

what you need should be something like a `SlidingCountWindow`. Flink Datastream 
API has already provided a `countWindow()` method for that and a related 
example can be found here 
.

Hope that helps,
Xingcan

> On 12 Mar 2018, at 1:33 PM, Miyuru Dayarathna  wrote:
> 
> Hi,
> 
> I need to create a sliding window of 4 events in Flink streaming application. 
> The window should slide by one event per every new arriving event. 
> Furthermore, per each new arriving event I need to calculate the aggregate 
> sum of a particular field in the 4 events I have in the window. I have 
> referred [1] which describes how this can be implemented based on time. But 
> my use case if little different, hence I am wondering how the window can be 
> slided when a new event gets added to the window.
> 
> [1] 
> https://ci.apache.org/projects/flink/flink-docs-release-1.4/dev/stream/operators/windows.html#sliding-windows
>  
> 
> 
> Thanks,
> Miyuru

Sliding window based on event arrival

[Miyuru Dayarathna]

Hi,
I need to create a sliding window of 4 events in Flink streaming application. 
The window should slide by one event per every new arriving event. Furthermore, 
per each new arriving event I need to calculate the aggregate sum of a 
particular field in the 4 events I have in the window. I have referred [1] 
which describes how this can be implemented based on time. But my use case if 
little different, hence I am wondering how the window can be slided when a new 
event gets added to the window.
[1] 
https://ci.apache.org/projects/flink/flink-docs-release-1.4/dev/stream/operators/windows.html#sliding-windows

Thanks,Miyuru