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From "Subramaniam Krishnan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-1712) Admission Control: plan follower
Date Thu, 04 Sep 2014 21:16:24 GMT

     [ https://issues.apache.org/jira/browse/YARN-1712?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Subramaniam Krishnan updated YARN-1712:
    Attachment: YARN-1712.2.patch

[~leftnoteasy] , good to hear that you got the full context. Thanks for reviewing the patch.
I am uploading a new patch that has the following changes:
   * Fix the Log message.
   * Replace stale references to sessions with reservations, good catch.

The currentReservations might have new reservations which just start now & so were not
active before. These will not yet have corresponding reservation queues in CapacityScheduler
as we create them after sorting. This is done to ensure the what you highlighted earlier -
we never exceed total capacity.

> Admission Control: plan follower
> --------------------------------
>                 Key: YARN-1712
>                 URL: https://issues.apache.org/jira/browse/YARN-1712
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: capacityscheduler, resourcemanager
>            Reporter: Carlo Curino
>            Assignee: Carlo Curino
>              Labels: reservations, scheduler
>         Attachments: YARN-1712.1.patch, YARN-1712.2.patch, YARN-1712.patch
> This JIRA tracks a thread that continuously propagates the current state of an inventory
subsystem to the scheduler. As the inventory subsystem store the "plan" of how the resources
should be subdivided, the work we propose in this JIRA realizes such plan by dynamically instructing
the CapacityScheduler to add/remove/resize queues to follow the plan.

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