Prioritization of Task/Batch jobs

[RobertLucian]

trafficstars

Description

A field like priority could be added to the job submission spec that could prioritize certain jobs over the others. The values the priority field could take could be number-based (1, 5, 90, etc) or label-based (low, medium, high).

Motivation

If a cluster can only have up to 100 instances and the cluster is already close to being maxed out (aka overcommitted), setting higher/lower priorities for specific tasks could prove to be useful.

Additional context

https://kubernetes.io/docs/concepts/configuration/pod-priority-preemption/