[lobster_johnson]

Thanks for the detailed reply!

I have to say I'm wary of big frameworks like this that insert themselves as a kind of monolithic control structure for everything.

My ideal setup is always one where I pick and mix the best modules for the job, and where I can write some interface glue to let my apps slot into the system, as opposed to writing my apps for a specific API (as tends to be the case with, say, Hadoop, and which of course would tie the whole platform to that API, making it hard to migrate to something else).

Sounds like Mesos is pretty modular and open in that respect?

[CoffeeDregs]

Once you get to know it, Mesos is really quite simple: slaves emit events about their capabilities and running processes; masters collect and distribute an inventory of slaves and their processes and of events that occur on slaves. The frameworks (ie. Marathon for long running jobs; Chronos for scheduled jobs) then listen to those inventories/events and ask the Mesos master to add and delete processes from slaves. So Mesos is quite modular.