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From "Subru Krishnan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2738) Add FairReservationSystem for FairScheduler
Date Tue, 09 Dec 2014 17:29:20 GMT

    [ https://issues.apache.org/jira/browse/YARN-2738?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14239711#comment-14239711
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Subru Krishnan commented on YARN-2738:
--------------------------------------

Thanks [~adhoot] and [~kasha] for taking the time for offline discussions. The consensus is
that for the first iteration we will have a single boolean flag per leaf queue to specify
whether the queue is reservable or not. This is mutually exclusive to the _parent_ flag, i.e.
either a leaf queue can be a dynamic parent queue or it can be reservable. We will have defaults
for _ReservationAgent_, _Replanner_ etc which will be overrideable at scheduler level.

I agree with [~kasha] that we should hide the dynamic reservation queues from the user. Can
we use _ReservationSchedulerConfiguration::getShowReservationAsQueues_ to show/hide the dynamic
reservation queues in web UI?

Also we need the equivalent of _CapacityScheduler::resolveReservationQueueName_ for the _AppAddedSchedulerEvent_
in FS and _handleMoveToPlanQueue_ for _moveApplication_
)

> Add FairReservationSystem for FairScheduler
> -------------------------------------------
>
>                 Key: YARN-2738
>                 URL: https://issues.apache.org/jira/browse/YARN-2738
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: fairscheduler
>            Reporter: Anubhav Dhoot
>            Assignee: Anubhav Dhoot
>         Attachments: YARN-2738.001.patch, YARN-2738.002.patch, YARN-2738.003.patch
>
>
> Need to create a FairReservationSystem that will implement ReservationSystem for FairScheduler



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