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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1011) [Umbrella] RM should dynamically schedule containers based on utilization of currently allocated containers
Date Fri, 02 Aug 2013 11:21:50 GMT

    [ https://issues.apache.org/jira/browse/YARN-1011?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13727582#comment-13727582
] 

Steve Loughran commented on YARN-1011:
--------------------------------------

Feature creep: could we have a way to explicitly ask for speculative containers? This could
be useful in long-lived services; the equivalent of EC2 spot instances, where you can have
a few for work if you understand that they may be destroyed with no warning at all.
                
> [Umbrella] RM should dynamically schedule containers based on utilization of currently
allocated containers
> -----------------------------------------------------------------------------------------------------------
>
>                 Key: YARN-1011
>                 URL: https://issues.apache.org/jira/browse/YARN-1011
>             Project: Hadoop YARN
>          Issue Type: New Feature
>            Reporter: Arun C Murthy
>
> Currently RM allocates containers and assumes resources allocated are utilized.
> RM can, and should, get to a point where it measures utilization of allocated containers
and, if appropriate, allocate more (speculative?) containers.

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