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Posted to yarn-issues@hadoop.apache.org by "Nathan Roberts (JIRA)" <ji...@apache.org> on 2016/07/11 17:54:11 UTC

[jira] [Created] (YARN-5356) ResourceUtilization should also include resource availability

Nathan Roberts created YARN-5356:
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             Summary: 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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