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https://issues.apache.org/jira/browse/YARN-8808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16624224#comment-16624224
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Arun Suresh edited comment on YARN-8808 at 9/21/18 9:50 PM:
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While working on YARN-1013, I check also for whether the
aggregateUtilization/nodeUtilization == 0. This implies that nothing is running
on the node, which implies that we should not over-allocate on the node right ?
Also, I am thinking a combination of containerUtilization + nodeUtilization
should be used though. Consider the situation where the container utilization
is high but the node utilization is low - Node has capacity for 4 1GB
containers, but is currently running 2 containers each using more than 1.9GB -
in this case, overallocation should be allowed.
was (Author: asuresh):
While working on YARN-1013, looks like we should also check for whether the
aggregateUtilization/nodeUtilization == 0. This implies that nothing is running
on the node, which implies that we should not over-allocate on the node right ?
Also, I am thinking a combination of containerUtilization + nodeUtilization
should be used though. Consider the situation where the container utilization
is high but the node utilization is low - Node has capacity for 4 1GB
containers, but is currently running 2 containers each using more than 1.9GB -
in this case, overallocation should be allowed.
> Use aggregate container utilization instead of node utilization to determine
> resources available for oversubscription
> ---------------------------------------------------------------------------------------------------------------------
>
> Key: YARN-8808
> URL: https://issues.apache.org/jira/browse/YARN-8808
> Project: Hadoop YARN
> Issue Type: Sub-task
> Affects Versions: YARN-1011
> Reporter: Haibo Chen
> Assignee: Haibo Chen
> Priority: Major
> Attachments: YARN-8088-YARN-1011.01.patch,
> YARN-8808-YARN-1011.00.patch
>
>
> Resource oversubscription should be bound to the amount of the resources that
> can be allocated to containers, hence the allocation threshold should be with
> respect to aggregate container utilization.
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