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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:
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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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