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https://issues.apache.org/jira/browse/YARN-689?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13662322#comment-13662322
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Arun C Murthy commented on YARN-689:
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bq. All the nodes in a cluster have 3 GB. Because YARN does not yet allow us to
set limits on disk IO, we don't want more than 3 containers on each node.
I'm sorry, this isn't making sense to me.
The reason we do multi-resource scheduling is to *stop* trying to come up with
proxies. Why aren't we doing DRF? I'm not comfortable with this change.
> Add multiplier unit to resourcecapabilities
> -------------------------------------------
>
> Key: YARN-689
> URL: https://issues.apache.org/jira/browse/YARN-689
> Project: Hadoop YARN
> Issue Type: Bug
> Components: api, scheduler
> Affects Versions: 2.0.4-alpha
> Reporter: Alejandro Abdelnur
> Assignee: Alejandro Abdelnur
> Attachments: YARN-689.patch, YARN-689.patch, YARN-689.patch
>
>
> Currently we overloading the minimum resource value as the actual multiplier
> used by the scheduler.
> Today with a minimum memory set to 1GB, requests for 1.5GB are always
> translated to allocation of 2GB.
> We should decouple the minimum allocation from the multiplier.
> The multiplier should also be exposed to the client via the
> RegisterApplicationMasterResponse
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