You have a cluster running with a FIFO scheduler enabled. You submit a large job A to the
cluster, which you expect to run for one hour. Then, you submit job B to the cluster, which
you expect to run a couple of minutes only. You submit both jobs with the same priority.
Which two best describes how FIFO Scheduler arbitrates the cluster resources for job and
its tasks?
A.
The order of execution of job may vary
B.
The FIFO Scheduler will pass an exception back to the client when Job B is submitted,
since all slots on the cluster are use
C.
Given job A and submitted in that order, all tasks from job A are guaranteed to finish
before all tasks from job B
D.
Because there is a more than a single job on the cluster, the FIFO Scheduler will enforce
a limit on the percentage of resources allocated to a particular job at any given time
E.
Tasks are scheduled on the order of their job submission
F.
The FIFO Scheduler will give, on average, and equal share of the cluster resources over
the job lifecycle
C,E
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C and E
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C,D
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The simplest scheduler is FIFO. The FIFO Scheduler places applications in a queue and executes them in the order of submission, so correct answer are C and E,
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C,E
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