Wangda Tan created YARN-3298:
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Summary: User-limit should be enforced in CapacityScheduler
Key: YARN-3298
URL: https://issues.apache.org/jira/browse/YARN-3298
Project: Hadoop YARN
Issue Type: Bug
Components: capacityscheduler, yarn
Reporter: Wangda Tan
Assignee: Wangda Tan
User-limit is not treat as a hard-limit for now, it will not consider
required-resource (resource of being-allocated resource request). And also,
when user's used resource equals to user-limit, it will still continue. This
will generate jitter issues when we have YARN-2069 (preemption policy kills a
container under an user, and scheduler allocate a container under the same user
soon after).
The expected behavior should be as same as queue's capacity:
Only when user.usage + required <= user-limit, queue will continue to allocate
container.
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