Hi Rong:
Thanks for your answer.
>From what I understand the dynamic gap session windows are also created when
>the event is encountered. I need to be able to change the window end time at
>a later time based on what other events are in that window. One way to do
>this is to use GlobalWindows but then these are never deleted.
Regarding CEP option - I believe that CEP patterns cannot be changed
dynamically once they've been complied which limits it usage.
Please feel free to correct me.
Thanks for your help and pointers.
On Tuesday, April 23, 2019, 8:12:56 PM EDT, Rong Rong <walter...@gmail.com>
wrote:
Hi Mans,
I am not sure what you meant by "dynamically change the end-time of a window.
If you are referring to dynamically determines the firing time of the window,
then it fits into the description of session window [1]: If you want to handle
window end time dynamically, one way of which I can think of is the dynamic
gap, session window [1] approach. with which you can specify the end-time of a
window based on input elements. Provided that you are maintaining a session
window. Another way to look at it is through the Flink-CEP library [2].
Thanks,Rong
[1]
https://ci.apache.org/projects/flink/flink-docs-release-1.8/dev/stream/operators/windows.html#session-windows[2]
https://ci.apache.org/projects/flink/flink-docs-release-1.8/dev/libs/cep.html#groups-of-patterns
On Tue, Apr 23, 2019 at 8:19 AM M Singh <mans2si...@yahoo.com> wrote:
Hi:
I am working on a project and need to change the end time of the window
dynamically. I want to find out if the end time of the window is used
internally (for sorting windows/etc) except for handling watermarks that would
cause problems if the end time was changed during run time after the window has
been created even if no new event has arrived for that window.
I don't want to use GlobalWindow since from my understanding it never gets
destroyed.
If there is any alternate way of dealing with this, please let me know.
Thanks
Mans
