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From "Sandy Ryza (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1003) Add a maxContainersPerNode config to the Fair Scheduler
Date Thu, 01 Aug 2013 06:25:48 GMT

    [ https://issues.apache.org/jira/browse/YARN-1003?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13726100#comment-13726100
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Sandy Ryza commented on YARN-1003:
----------------------------------

This makes it so that we don't need to use the resources we currently have as proxies for
the ones we don't.  If we add resources like disk and network I/O, this will become much less
necessary, but I still think a high number of containers will put load on a system in ways
that we won't account for.  Open file descriptors for example.  If my machine has 8 GB, I
might want to allow a 512 MB container to fit in between a 4 GB one and a 3.5 GB one, but
might not want to allow 16 512 MB containers.
                
> Add a maxContainersPerNode config to the Fair Scheduler
> -------------------------------------------------------
>
>                 Key: YARN-1003
>                 URL: https://issues.apache.org/jira/browse/YARN-1003
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: scheduler
>    Affects Versions: 2.1.0-beta
>            Reporter: Sandy Ryza
>            Assignee: Karthik Kambatla
>


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