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From "Arun Suresh (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (YARN-8808) Use aggregate container utilization instead of node utilization to determine resources available for oversubscription
Date Fri, 21 Sep 2018 21:51:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-8808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16624224#comment-16624224
] 

Arun Suresh edited comment on YARN-8808 at 9/21/18 9:50 PM:
------------------------------------------------------------

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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