Hi Aljoscha, No problem with the change. I think it's more what a user would expect as well.
On Wed, Jan 27, 2016 at 3:27 AM, Aljoscha Krettek <aljos...@apache.org> wrote: > Hi Brian, > you are right about changing the behavior of windows when closing. Would > this be a problem for you? > > Cheers, > Aljoscha > > On 26 Jan 2016, at 17:53, Radu Tudoran <radu.tudo...@huawei.com> wrote: > > > > Hi, > > > > Thank you for sharing your experience and also to Till for the advice. > > What I would like to do is to be able to fire the window potentially > multiple times, even if an event did not arrive. I will look more about how > dealing with the processing time could help in this > > > > Dr. Radu Tudoran > > Research Engineer - Big Data Expert > > IT R&D Division > > > > <image001.png> > > HUAWEI TECHNOLOGIES Duesseldorf GmbH > > European Research Center > > Riesstrasse 25, 80992 München > > > > E-mail: radu.tudo...@huawei.com > > Mobile: +49 15209084330 > > Telephone: +49 891588344173 > > > > HUAWEI TECHNOLOGIES Duesseldorf GmbH > > Hansaallee 205, 40549 Düsseldorf, Germany, www.huawei.com > > Registered Office: Düsseldorf, Register Court Düsseldorf, HRB 56063, > > Managing Director: Bo PENG, Wanzhou MENG, Lifang CHEN > > Sitz der Gesellschaft: Düsseldorf, Amtsgericht Düsseldorf, HRB 56063, > > Geschäftsführer: Bo PENG, Wanzhou MENG, Lifang CHEN > > This e-mail and its attachments contain confidential information from > HUAWEI, which is intended only for the person or entity whose address is > listed above. Any use of the information contained herein in any way > (including, but not limited to, total or partial disclosure, reproduction, > or dissemination) by persons other than the intended recipient(s) is > prohibited. If you receive this e-mail in error, please notify the sender > by phone or email immediately and delete it! > > > > From: Brian Chhun [mailto:brian.ch...@getbraintree.com] > > Sent: Tuesday, January 26, 2016 5:28 PM > > To: user@flink.apache.org > > Subject: Re: continous time triger > > > > For what it's worth, we have a trigger that fires once a day for a > recurring calculation. When an element comes in, we set the trigger > context's processing time timer to the exact millisecond of the desired > time. The predefined triggers were useful to look at to achieve this: > https://github.com/apache/flink/tree/master/flink-streaming-java/src/main/java/org/apache/flink/streaming/api/windowing/triggers > > > > Some things I discovered along the way, particularly using processing > time, which may be useful: > > - registering a time that's already passed will cause the timer callback > to be called > > - when the system shuts down, the window is fired even though the > trigger has not gone off (this sounds subject to change though) > > > > On Tue, Jan 26, 2016 at 3:47 AM, Till Rohrmann <trohrm...@apache.org> > wrote: > > Hi Radu, > > > > you can register processing and event time time triggers using the > TriggerContext which is given to the onElement, onProcessingTime and > onEventTime methods of Trigger. In case you register a processing time > timer, the onProcessingTime method will be called once the system clock has > passed the timer time. In case of an event time timer, the > onEventTimemethod is called once a watermark has been received which has a > higher watermark than the timer. > > > > I hope this helps you to solve your problem. > > > > Cheers, > > Till > > > > > > > > On Mon, Jan 25, 2016 at 9:25 PM, Radu Tudoran <radu.tudo...@huawei.com> > wrote: > > Re-Hi, > > > > I have another question regarding the triggering of the processing of a > window. Can this be done in some way at specific time intervals, > independent of whether an event has been received or not, via a trigger? > > > > The reason why I am considering a trigger rather than timeWindow(All) is > that timeWindow will end up generating multiple windows and duplicating > data, while having the option from the trigger to actually fire the > processing at certain times, independent of when the events arrived) would > enable to operate with a single window. > > > > Regards, > > > > Dr. Radu Tudoran > > Research Engineer - Big Data Expert > > IT R&D Division > > > > <image001.png> > > HUAWEI TECHNOLOGIES Duesseldorf GmbH > > European Research Center > > Riesstrasse 25, 80992 München > > > > E-mail: radu.tudo...@huawei.com > > Mobile: +49 15209084330 > > Telephone: +49 891588344173 > > > > HUAWEI TECHNOLOGIES Duesseldorf GmbH > > Hansaallee 205, 40549 Düsseldorf, Germany, www.huawei.com > > Registered Office: Düsseldorf, Register Court Düsseldorf, HRB 56063, > > Managing Director: Bo PENG, Wanzhou MENG, Lifang CHEN > > Sitz der Gesellschaft: Düsseldorf, Amtsgericht Düsseldorf, HRB 56063, > > Geschäftsführer: Bo PENG, Wanzhou MENG, Lifang CHEN > > This e-mail and its attachments contain confidential information from > HUAWEI, which is intended only for the person or entity whose address is > listed above. Any use of the information contained herein in any way > (including, but not limited to, total or partial disclosure, reproduction, > or dissemination) by persons other than the intended recipient(s) is > prohibited. If you receive this e-mail in error, please notify the sender > by phone or email immediately and delete it! > >
