You might have to introduce some dummy keys for a more robust solution that integrates with the fault-tolerance mechanism.
Gyula On Tue, Nov 5, 2019 at 9:57 AM Felipe Gutierrez < felipe.o.gutier...@gmail.com> wrote: > Thanks Piotr, > > the thing is that I am on Stream data and not on keyed stream data. So, I > cannot use the TimerService concept here. I am triggering a local window. I > ended up using java.util.Timer [1] and it seems to suffice my requirements. > > [1] https://docs.oracle.com/javase/7/docs/api/java/util/Timer.html > > Thanks! > > *--* > *-- Felipe Gutierrez* > > *-- skype: felipe.o.gutierrez* > *--* *https://felipeogutierrez.blogspot.com > <https://felipeogutierrez.blogspot.com>* > > > On Wed, Oct 30, 2019 at 2:59 PM Piotr Nowojski <pi...@ververica.com> > wrote: > >> Hi, >> >> If you want to register a processing/event time trigger in your custom >> operator, you can take a look how other operators are doing it, by calling >> AbstractStreamOperator#getInternalTimerService [1]. You can look around >> the Flink’s code base for usages of this method, there are at least couple >> of them (like CepOperator or IntervalJoinOperator). >> >> Hope that helps, >> Piotrek >> >> [1] >> https://ci.apache.org/projects/flink/flink-docs-master/api/java/org/apache/flink/streaming/api/operators/AbstractStreamOperator.html#getInternalTimerService-java.lang.String-org.apache.flink.api.common.typeutils.TypeSerializer-org.apache.flink.streaming.api.operators.Triggerable- >> >> On 28 Oct 2019, at 10:09, Felipe Gutierrez <felipe.o.gutier...@gmail.com> >> wrote: >> >> Hi all, >> >> I have my own stream operator which trigger an aggregation based on the >> number of items received >> (OneInputStreamOperator#processElement(StreamRecord)). However, it is >> possible to not trigger my aggregation if my operator does not receive the >> max items that have been set. So, I need a timeout trigger. >> >> I am confused if I need to extend Trigger on >> MyPreAggregate-AbstractUdfStreamOperator or if I have to put a window as a >> parameter of the operator class MyPreAggregate-AbstractUdfStreamOperator<K, >> V, IN, OUT, W extends Window>. what is the best approach? >> >> Thanks, >> Felipe >> *--* >> *-- Felipe Gutierrez* >> >> *-- skype: felipe.o.gutierrez* >> *--* *https://felipeogutierrez.blogspot.com >> <https://felipeogutierrez.blogspot.com/>* >> >> >>
