Hi Fabian,
Thanks for the information. I also quickly want to ask that if I implement a 
custom trigger that fires in one hour for the first time and then every five 
minutes, what all functions do I need to use?I am considering creating my own 
trigger referring the code 
here:https://github.com/apache/flink/blob/master/flink-streaming-java/src/main/java/org/apache/flink/streaming/api/windowing/triggers/CountTrigger.java
What changes do I need to make? Is it even possible to do this?
 Thanks and Regards,Piyush Shrivastava
http://webograffiti.com
 

    On Wednesday, 20 April 2016 4:59 PM, Fabian Hueske <fhue...@gmail.com> 
wrote:
 

 Hi Piyush,

if you explicitly set a trigger, the default trigger of the window is replaced. 
In your example, the time trigger is replaced by the count trigger, i.e., the 
window is only evaluated after the 100th element was received.

This blog post discusses windows and triggers [1].

Best, Fabian

[1] http://flink.apache.org/news/2015/12/04/Introducing-windows.html

2016-04-20 13:20 GMT+02:00 Piyush Shrivastava <piyush...@yahoo.co.in>:

I wanted to know how Windows and Triggers work in Flink. I am creating a time 
window of 20 seconds and a count trigger of 100.
stream.keyBy(0)
             .timeWindow(Time.seconds(20))
             .trigger(CountTrigger.of(100))
In this case, when will my window get triggered? When 20 seconds has passed, 
100 messages are passed? 

Thanks and Regards,Piyush Shrivastava
http://webograffiti.com




  

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