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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