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On 7 Aug 2018, at 06:51, Timo Walther <[hidden email]> wrote:

Hi Esa,

the SQL/CEP integration might be part of Flink 1.7. The discussion has just been started again [1].

Regards,
Timo

[1] https://issues.apache.org/jira/browse/FLINK-6935

Am 07.08.18 um 15:36 schrieb Esa Heikkinen:

There was one good example of pattern query in the paper made by SASE+ language (in attachment).

 

Could you easily say how to do that FlickCEP with Scala ? Or is it possible ?

 

That SQL and CEP would also be very interesting, but when it is ready to use ?

 

BR Esa

 

From: vino yang [hidden email]
Sent: Monday, July 23, 2018 3:00 PM
To: Esa Heikkinen [hidden email]
Cc: Till Rohrmann [hidden email]; Chesnay Schepler [hidden email]; user [hidden email]
Subject: Re: FlinkCEP and scientific papers ?

 

Hi Esa,

 

I think the core implementation pattern is still based that paper, there is a package named "nfa"[1] contains the main thought.

 

The latest CEP module added more features and enhanced the old versio. What's more, there is a FLIP-20 which has been accepted, it described how to integrate with SQL and CEP.[2] 

 

I think there is no newer paper related to current Flink CEP.

 

[1]: https://github.com/apache/flink/tree/master/flink-libraries/flink-cep/src/main/java/org/apache/flink/cep/nfa

[2]: https://cwiki.apache.org/confluence/display/FLINK/FLIP-20:+Integration+of+SQL+and+CEP

 

Thanks, vino.

 

 

2018-07-23 16:05 GMT+08:00 Esa Heikkinen <[hidden email]>:

Hi

 

Thank you. This was very good paper for me J

 

How much current FlinkCEP works like this (the paper was written 2008) ?

 

Are there exist newer papers related to current FlinkCEP ?

 

BR Esa

 

From: Till Rohrmann <[hidden email]>
Sent: Wednesday, July 18, 2018 9:38 AM
To: vino yang <[hidden email]>
Cc: Esa Heikkinen <[hidden email]>; Chesnay Schepler <[hidden email]>; user <[hidden email]>
Subject: Re: FlinkCEP and scientific papers ?

 

You are right Vino,

 

the initial implementation was based on the above mentioned paper.

 

Cheers,

Till

 

On Tue, Jul 17, 2018 at 5:34 PM vino yang <[hidden email]> wrote:

Hi Esa,

 

AFAIK, the earlier Flink CEP refers to the Paper 《Efficient Pattern Matching over Event Streams》[1]. Flink absorbed  two major idea from this paper:

 

1. NFA-b model on event stream

2. a shared versioned match buffer which is a optimized data structure

 

To Till and Chesnay:

 

Did I missed anything when as time goes on and the development of Flink? If yes, please give your additional remarks.

 

[1]: https://people.cs.umass.edu/~yanlei/publications/sase-sigmod08.pdf

 

Thanks, vino.

 

2018-07-17 22:01 GMT+08:00 Esa Heikkinen <[hidden email]>:

Hi

 

I don’t know this the correct forum to ask, but are there exist some good scientific papers about FlinkCEP (Complex Event Processing) ?

 

I know Flink is based to Stratosphere, but how is it FlinkCEP ?

 

BR Esa