Re: Cep application with Flink

2021-02-20 Thread Maminspapin
Hello, *Jörn Franke*. Thank you for reply. If I correctly realise your answer, the watermark Flink mechanism should help me sort events in order I need. So I should dig deeper in that issue. For example, I read three topics, make joins and after get two events by the same user in this order:

Re: Cep application with Flink

2021-02-20 Thread Jörn Franke
You are working in a distributed system so event ordering by time may not be sufficient (or most likely not). Due to network delays, devices offline etc it can happen that an event arrives much later although it happened before. Check watermarks in flink and read on at least once, mostly once an

Cep application with Flink

2021-02-19 Thread Люльченко Юрий Николаевич
Hi there.   I’m a newby with Flink and I need to develop a CEP application using this technology. At least, we are choosing a tool now. So I have a question how Flink really fit to my goals.   Buisness requirements:   There is a mobile application. Data is collected in Kafka topics (which are h