[
https://issues.apache.org/jira/browse/YARN-1039?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14311146#comment-14311146
]
Carlo Curino commented on YARN-1039:
------------------------------------
An idea of how long container will last would be very very useful for
preemption. The ProportionalCapacityPreemptionPolicy currently needs to guess
how many containers would
naturally complete before the preemption action happens (to avoid
over-shooting). The information about container durations (even if rough) would
made this a much more informed
guess. Again, this is for optimization purposes not correctness so we can
tolerate a fair bit of errors.
> Add parameter for YARN resource requests to indicate "long lived"
> -----------------------------------------------------------------
>
> Key: YARN-1039
> URL: https://issues.apache.org/jira/browse/YARN-1039
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: resourcemanager
> Affects Versions: 3.0.0, 2.1.1-beta
> Reporter: Steve Loughran
> Assignee: Craig Welch
> Attachments: YARN-1039.1.patch, YARN-1039.2.patch, YARN-1039.3.patch
>
>
> A container request could support a new parameter "long-lived". This could be
> used by a scheduler that would know not to host the service on a transient
> (cloud: spot priced) node.
> Schedulers could also decide whether or not to allocate multiple long-lived
> containers on the same node
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
