How is Spark started by default?

(afaik, and I've just had a quick look long ago, it is its own process -- own script, etc)

If it doesn't have an embedded way, then it's probably hard, if not impossible.

Perhaps rather have 2 processes, that communicate with each other.

Otoh, it looks pretty easy to embedded it:

* https://spark.apache.org/docs/latest/quick-start.html#self-contained-applications

* http://stackoverflow.com/questions/24412434/it-is-possible-to-start-an-embedded-instance-of-apache-spark-node

So I guess all you need is to add all the right classes on the app's classpath.

And in WildFly the easiest way to do this is to add the classes / jars as modules.

Just dunno what is then needed for the proper cluster, etc.

e.g. would be useful to somehow re-use JGroups (this is what WildFly uses for clustering) for this