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https://issues.apache.org/jira/browse/YARN-5356?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15373830#comment-15373830
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Inigo Goiri commented on YARN-5356:
-----------------------------------
It looks like there is some work we may want to leverage in YARN-4081 where
they have YARN-4081 to add multiple resources.
I'd like to have some feedback from [~vvasudev] and [~asuresh] about their
opinion on this.
> ResourceUtilization should also include resource availability
> -------------------------------------------------------------
>
> Key: YARN-5356
> URL: https://issues.apache.org/jira/browse/YARN-5356
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: nodemanager, resourcemanager
> Affects Versions: 3.0.0-alpha1
> Reporter: Nathan Roberts
>
> Currently ResourceUtilization contains absolute quantities of resource used
> (e.g. 4096MB memory used). It would be good if it also included how much of
> that resource is actually available on the node so that the RM can use this
> data to schedule more effectively (overcommit, etc)
> Currently the only available information is the Resource the node registered
> with (or later updated using updateNodeResource). However, these aren't
> really sufficient to get a good view of how utilized a resource is. For
> example, if a node reports 400% CPU utilization, does that mean it's
> completely full, or barely utilized? Today there is no reliable way to figure
> this out.
> [~elgoiri] - Lots of good work is happening in YARN-2965 so curious if you
> have thoughts/opinions on this?
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