[YARN-10009] In Capacity Scheduler, DRC can treat minimum user limit percent as a max when custom resource is defined

• Type: Improvement
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.10.0, 3.3.0, 3.2.1, 3.1.3, 2.10.1
• Fix Version/s: 3.3.0, 3.2.2, 3.1.4, 2.10.1
• Component/s: capacity scheduler
• Assignee: Eric Payne
• Reporter: Eric Payne
• Created: 02/Dec/19 20:48
• Updated: 21/Dec/19 15:03
• Resolved: 20/Dec/19 19:48

Description

	Memory	Vcores	res_1
Queue1 Totals	20GB	100	80
Resources requested by App1 in Queue1	8GB (40% of total)	8 (8% of total)	80 (100% of total)

In the previous use case:

• Queue1 has a value of 25 for miminum-user-limit-percent
• User1 has requested 8 containers with <memory:1GB, vcores:8, res_1:10> each
• res_1 will be the dominant resource this case.

All 8 containers should be assigned by the capacity scheduler, but with min user limit pct set to 25, only 2 containers are assigned.