Eric Payne created YARN-7619:
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Summary: Max AM Resource value in CS UI is different for every user
Key: YARN-7619
URL: https://issues.apache.org/jira/browse/YARN-7619
Project: Hadoop YARN
Issue Type: Bug
Components: capacity scheduler, yarn
Affects Versions: 3.0.0-beta1, 2.9.0, 2.8.2, 3.1.0
Reporter: Eric Payne
Assignee: Eric Payne
YARN-7245 addressed the problem that the {{Max AM Resource}} in the capacity
scheduler UI used to contain the queue-level AM limit instead of the user-level
AM limit. It fixed this by using the user-specific AM limit that is calculated
in {{LeafQueue#activateApplications}}, stored in each user's {{LeafQueue#User}}
object, and retrieved via {{UserInfo#getResourceUsageInfo}}.
The problem is that this user-specific AM limit depends on the activity of
other users and other applications in a queue, and it is only calculated and
updated when a user's application is activated. So, when
{{CapacitySchedulerPage}} retrieves the user-specific AM limit, it is a stale
value unless an application was recently activated for a particular user.
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