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https://issues.apache.org/jira/browse/YARN-1710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14044243#comment-14044243
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Carlo Curino commented on YARN-1710:
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I uploaded a patch that contains a GreedyReservationAgent.
The philosophy behind this agent is to greedily place from the deadline back
towards arrival. This intuitively increase the chances of a job showing up
later
but with an earlier deadline to find space in the plan. It works well when
paired with opportunistic anticipation of work (i.e., thanks to YARN-1957 even
if the
reservation has a zero allocation at the moment the scheduler can give it
resources if they are not claim by anyone.).
Smarter placement policies are worth thinking about, and will increase the % of
jobs accepted, or minimize other parameters such as preemption. We are
exploring this space.
> Admission Control: agents to allocate reservation
> -------------------------------------------------
>
> Key: YARN-1710
> URL: https://issues.apache.org/jira/browse/YARN-1710
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: resourcemanager
> Reporter: Carlo Curino
> Assignee: Carlo Curino
> Attachments: YARN-1710.patch
>
>
> This JIRA tracks the algorithms used to allocate a user ReservationRequest
> coming in from the new reservation API (YARN-1708), in the inventory
> subsystem (YARN-1709) maintaining the current plan for the cluster. The focus
> of this "agents" is to quickly find a solution for the set of contraints
> provided by the user, and the physical constraints of the plan.
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