[
https://issues.apache.org/jira/browse/YARN-3656?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14546361#comment-14546361
]
Ishai Menache commented on YARN-3656:
-------------------------------------
LowCost judiciously “spreads” the demand of the job throughout the allowed
time-window according to a global, load-based cost function. This leads to more
balanced allocations, and in turn substantially improves the acceptance rate of
jobs and the cluster utilization.
> 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
> Reporter: Ishai Menache
>
> 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.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
