WSO2 Stream Processor confusion

Question

I have a little bit of confusion about the Stream Processor. I've previously used the CEP and now I'm using the Stream Processor.

if I'm not mistaken, the Data Analytics Server, the CEP and the Machine Learner merged into the Stream Processor, is it true?

Because I found some inconsistencies, for example the SP can't publish directly in the dashboard, while CEP could. So, my question is, all the feutures in the CEP and in the ML, are going to flow in the SP?

Answer 1

DAS, CEP and ML have not been completely merged into the Stream Processor.

In DAS, the real time analytics were handled by Siddhi and the batch analytics were done through Spark. However, in Stream Processor, only Siddhi acts as the core processor and Spark is not used.

Stream processor processes data in streaming manner through siddhi. In order to fulfill the requiremnts for batch analytics, incremental processing[1] which has been introduced to Siddhi 4.0.0 can be used.

Also ML support is provided through ml extentions written for Siddhi 4.0.0.

In das/cep it is required to define several artifacts like receivers, execution plans, publishers etc.. in order to create a analytic work flow.

But in Stream Processor,it is possible to define the whole flow in a single Siddhi-App.

For further clarification, please refer to the DAS to SP migration guide[2] and WSO2 analytics site[3].

[1] https://wso2.github.io/siddhi/documentation/siddhi-4.0/#incremental-aggregation

[2] https://docs.wso2.com/display/SP4xx/Upgrading+from+a+Previous+Release

[3] https://wso2.com/analytics