Hello That is good to hear, but are there exist some good practical (Python or Scala) examples ? This would help a lot.
I tried to do that by Apache Flink (and its CEP) and it was not so piece cake. Best, Esa From: Matteo Cossu <elco...@gmail.com> Sent: Friday, May 18, 2018 10:51 AM To: Esa Heikkinen <esa.heikki...@student.tut.fi> Cc: user@spark.apache.org Subject: Re: How to Spark can solve this example Hello Esa, all the steps that you described can be performed with Spark. I don't know about CEP, but Spark Streaming should be enough. Best, Matteo On 18 May 2018 at 09:20, Esa Heikkinen <esa.heikki...@student.tut.fi<mailto:esa.heikki...@student.tut.fi>> wrote: Hi I have attached fictive example (pdf-file) about processing of event traces from data streams (or batch data). I hope the picture of the attachment is clear and understandable. I would be very interested in how best to solve it with Spark. Or it is possible or not ? If it is possible, can it be solved for example by CEP ? Little explanations.. Data processing reads three different and parallel streams (or batch data): A, B and C. Each of them have events which have different “keys with value” (like K1-K4) or record. I would want to find all event traces, which have certain dependences or patterns between streams (or batches). To find pattern there are three steps: 1) Searches an event that have value “X” in K1 in stream A and if it is found, stores it to global data for later use and continues next step 2) Searches an event that have value A(K1) in K2 in stream B and if it is found, stores it to global data for later use and continues next step 3) Searches an event that have value A(K1) in K1 and value B(K3) in K2 in stream C and if it is found, continues next step (back to step 1) If that is not possible by Spark, do you have any idea of tools, which can solve this ? Best, Esa --------------------------------------------------------------------- To unsubscribe e-mail: user-unsubscr...@spark.apache.org<mailto:user-unsubscr...@spark.apache.org>
