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https://issues.apache.org/jira/browse/YARN-3656?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14598623#comment-14598623
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Jonathan Yaniv commented on YARN-3656:
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Thanks Carlo. I attached a new version of the patch (v1.1), in which we also
implement GreedyReservationAgent using our algorithmic framework.
We verified that the behavior of the new version is identical to the original
via simulations (= the implementations generated identical allocations) and
unit tests (= the implementations behaved similarly on corner cases). We also
ran test-patch locally on v1.1 of the patch and got +1.
> 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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