You have a cluster running with the Fair in Scheduler enabled. There are currently no jobs running
on the cluster, and you submit a job A, so that only job A is running on the cluster. A while later,
you submit job B, Now job A and job B are running on the cluster at the same time.
Which of the following describes how the Fair Scheduler operates? (Choose 2)

A.
When job B gets submitted, it will get assigned tasks, while job A continues to run with fewer
tasks.

B.
When job A gets submitted, it doesn’t consume all the task slots.

C.
When job A gets submitted, it consumes all the task slots.

D.
When job B gets submitted, job A has to finish first, before job B can get scheduled.

Explanation:
http://hadoop.apache.org/common/docs/r0.20.2/fair_scheduler.html (introduction, first
paragraph)