[sabraham]

To load the framework (application) with the logic with the concern of deciding what resources it wants. The scheduler shouldn't care about what you get, just fairness. Two-tiered scheduling achieves this:

Mesos decides how many resources to offer each framework, while frameworks decide which resources to accept and which computations to run on them.

http://mesos.berkeley.edu/mesos_tech_report.pdf

[wmf]

I guess that makes sense if frameworks care about placement (which I generally don't) because otherwise they'd have to express placement constraints to Mesos.

I still can't find documentation about what fairness policies are actually implemented, though.

[sabraham]

Mesos uses dominant resource fairness:

https://www.cs.berkeley.edu/~alig/papers/drf.pdf