Re: FlinkCEP - Detect absence of a certain event

2020-03-19 Thread Humberto Rodriguez Avila
Thanks David, I will look at your references 👍🏻 > On 19 Mar 2020, at 09:51, David Anderson wrote: > > Humberto, > > Although Flink CEP lacks notFollowedBy at the end of a Pattern, there is a > way to implement this by exploiting the timeout feature. > > The Flink training includes an exercis

Re: FlinkCEP - Detect absence of a certain event

2020-03-19 Thread Humberto Rodriguez Avila
Thanks David, I will look at your references 👍🏻 > On 19 Mar 2020, at 09:51, David Anderson > wrote: > > Humberto, > > Although Flink CEP lacks notFollowedBy at the end of a Pattern, there is a > way to implement this by exploiting the timeout feature. > > The Flin

Re: FlinkCEP - Detect absence of a certain event

2020-03-19 Thread David Anderson
Humberto, Although Flink CEP lacks notFollowedBy at the end of a Pattern, there is a way to implement this by exploiting the timeout feature. The Flink training includes an exercise [1] where the objective is to identify taxi rides with a START event that is not followed by an END event within tw

Re: FlinkCEP - Detect absence of a certain event

2020-03-19 Thread Humberto Rodriguez Avila
Hello Fuji and Zhijiang Thanks for time! Fuji thanks for the links 👍🏻 I hope that in the future similar scenarios can be implemented in FlinkCEP. Other CEPs like ESPER support this particular type of negated patterns. Best regards, Humberto > On 19 Mar 2020, at 04:55, Shuai Xu wrote: > >

Re: FlinkCEP - Detect absence of a certain event

2020-03-18 Thread Zhijiang
Hi Humberto, I guess Fuji is familiar with Flink CEP and he can answer your proposed question. I already cc him. Best, Zhijiang -- From:Humberto Rodriguez Avila Send Time:2020 Mar. 18 (Wed.) 17:31 To:user Subject:FlinkCEP - Dete

FlinkCEP - Detect absence of a certain event

2020-03-18 Thread Humberto Rodriguez Avila
In the documentation of FlinkCEP, I found that I can enforce that a particular event doesn't occur between two other events using notFollowedBy or notNext. However, I was wondering If I could detect the absence of a certain event after a time X. For example, if an event A is not followed by anot