[YARN-3153] Capacity Scheduler max AM resource limit for queues is defined as percentage but used as ratio

• Type: Bug
• Status: Open
• Priority: Critical
• Resolution: Unresolved
• Assignee: Wangda Tan
• Reporter: Wangda Tan
• Created: 06/Feb/15 21:32
• Updated: 28/Feb/18 09:24

Description

In existing Capacity Scheduler, it can limit max applications running within a queue. The config is yarn.scheduler.capacity.maximum-am-resource-percent, but actually, it is used as "ratio", in implementation, it assumes input will be [0,1]. So now user can specify it up to 100, which makes AM can use 100x of queue capacity. We should fix that.