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From "Carlo Curino (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3656) LowCost: A Cost-Based Placement Agent for YARN Reservations
Date Wed, 24 Jun 2015 06:13:43 GMT

    [ https://issues.apache.org/jira/browse/YARN-3656?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14598922#comment-14598922
] 

Carlo Curino commented on YARN-3656:
------------------------------------

[~jyaniv] please address the checkstyle and whitespace -1 above. The rest is looking good.
[~subru] can you comment on the test failure? Is this something that is going to be addressed
by the work on making the reservation subsystem HA? 

> LowCost: A Cost-Based Placement Agent for YARN Reservations
> -----------------------------------------------------------
>
>                 Key: YARN-3656
>                 URL: https://issues.apache.org/jira/browse/YARN-3656
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: capacityscheduler, resourcemanager
>    Affects Versions: 2.6.0
>            Reporter: Ishai Menache
>            Assignee: Jonathan Yaniv
>              Labels: capacity-scheduler, resourcemanager
>         Attachments: LowCostRayonExternal.pdf, YARN-3656-v1.1.patch, YARN-3656-v1.patch,
lowcostrayonexternal_v2.pdf
>
>
> YARN-1051 enables SLA support by allowing users to reserve cluster capacity ahead of
time. YARN-1710 introduced a greedy agent for placing user reservations. The greedy agent
makes fast placement decisions but at the cost of ignoring the cluster committed resources,
which might result in blocking the cluster resources for certain periods of time, and in turn
rejecting some arriving jobs.
> We propose LowCost – a new cost-based planning algorithm. LowCost “spreads” the
demand of the job throughout the allowed time-window according to a global, load-based cost
function. 



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