Inigo Goiri updated YARN-5356:
    Attachment: YARN-5356.003.patch

Fixing NPE in PB.

> NodeManager should communicate physical resource capability to ResourceManager
> ------------------------------------------------------------------------------
>                 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
>            Assignee: Inigo Goiri
>         Attachments: YARN-5356.000.patch, YARN-5356.001.patch, 
> YARN-5356.002.patch, YARN-5356.002.patch, YARN-5356.003.patch
> Currently ResourceUtilization contains absolute quantities of resource used 
> (e.g. 4096MB memory used). It would be good if the NM also communicated the 
> actual physical resource capabilities of 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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