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From "Craig Welch (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1039) Add parameter for YARN resource requests to indicate "long lived"
Date Tue, 20 Jan 2015 20:05:37 GMT

    [ https://issues.apache.org/jira/browse/YARN-1039?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14284325#comment-14284325
] 

Craig Welch commented on YARN-1039:
-----------------------------------

Another thought - if we do need this kind of "flag", I think we should detach the notion from
duration or "long life" as such - I think it's more about service vs batch - where a service's
duration is not necessarily related to any preset notion of a work item it will start, work
on, and complete - it will be started to handle work which is given to it, of unknown quantity
(& potentially many different items) and stopped when no longer needed - it's not so much
about the duration as the lifecycle (a batch operation may have a longer runtime than a service,
for example).  So, I'd suggest dropping the "temporal" flavor and going with "service" vs
"batch", or something along those lines.

> 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



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