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From "Eric Payne (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-7619) Max AM Resource value in CS UI is different for every user
Date Sat, 16 Dec 2017 19:53:00 GMT

     [ https://issues.apache.org/jira/browse/YARN-7619?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Eric Payne updated YARN-7619:
    Attachment: YARN-7619.005.branch-2.8.patch

Attaching version 005 for branch-2.8

> 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: 2.9.0, 3.0.0-beta1, 2.8.2, 3.1.0
>            Reporter: Eric Payne
>            Assignee: Eric Payne
>         Attachments: Max AM Resources is Different for Each User.png, YARN-7619.001.patch,
YARN-7619.002.patch, YARN-7619.003.patch, YARN-7619.004.branch-2.8.patch, YARN-7619.004.branch-3.0.patch,
YARN-7619.004.patch, YARN-7619.005.branch-2.8.patch, YARN-7619.005.branch-3.0.patch, YARN-7619.005.patch
> 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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