Re: emit partial state in window (streaming)

Posted by Manu Zhang on
URL: http://deprecated-apache-flink-user-mailing-list-archive.369.s1.nabble.com/emit-partial-state-in-window-streaming-tp9759p9862.html

Hi Luis,

You may try ContinuousEventTimeTrigger that continuously fire on given time interval instead of writing your own.

Note that we recently fixed a bug for this trigger so I think only the trunk version is working.

Cheers,

Manu

On Thu, Nov 3, 2016 at 9:07 PM Kostas Kloudas <[hidden email]> wrote:

Hi Luis,

Can you try to comment the whole final windowing and see if this is works? 

This includes the following lines:

  .windowAll(TumblingEventTimeWindows.of(Time.of(windowTime, timeUnit)))

  .trigger(new PartialWindowTrigger<>(partialWindowTime, timeUnit, windowTime, timeUnit))

  .apply(creator.create(), windowAllFold, windowAllMerge);

An additional note is that I would go for registering an event time timer at the onEventTime 

instead of checking the timestamp on the onElement(). This is because with your implementation,

in order to fire a computation, you always have to wait for an element outside the partial window interval to arrive.

Cheers,

Kostas

On Nov 3, 2016, at 11:31 AM, Luis Mariano Guerra <[hidden email]> wrote:

  .windowAll(TumblingEventTimeWindows.of(Time.of(windowTime, timeUnit)))
                //.trigger(new PartialWindowTrigger<>(partialWindowTime, timeUnit, windowTime, timeUnit))
                .apply(creator.create(), windowAllFold, windowAllMerge);