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From "Adam Antal (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (YARN-9326) Fair Scheduler configuration defaults are not documented in case of min and maxResources
Date Mon, 15 Jul 2019 14:54:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-9326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16885305#comment-16885305
] 

Adam Antal edited comment on YARN-9326 at 7/15/19 2:53 PM:
-----------------------------------------------------------

Thanks for the commit and the reviews!


was (Author: adam.antal):
Thanks for the commit and the reviewers!

> Fair Scheduler configuration defaults are not documented in case of min and maxResources
> ----------------------------------------------------------------------------------------
>
>                 Key: YARN-9326
>                 URL: https://issues.apache.org/jira/browse/YARN-9326
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: docs, documentation, fairscheduler, yarn
>    Affects Versions: 3.2.0
>            Reporter: Adam Antal
>            Assignee: Adam Antal
>            Priority: Major
>             Fix For: 3.3.0, 3.2.1
>
>         Attachments: YARN-9326.001.patch, YARN-9326.002.patch, YARN-9326.003.patch, YARN-9326.004.patch,
YARN-9326.005.patch
>
>
> The FairScheduler's configuration has the following defaults (from the code: javadoc):
> {noformat}
> In new style resources, any resource that is not specified will be set to missing or
0%, as appropriate. Also, in the new style resources, units are not allowed. Units are assumed
from the resource manager's settings for the resources when the value isn't a percentage.
The missing parameter is only used in the case of new style resources without percentages.
With new style resources with percentages, any missing resources will be assumed to be 100%
because percentages are only used with maximum resource limits.
> {noformat}
> This is not documented in the hadoop yarn site FairScheduler.html. It is quite intuitive,
but still need to be documented though.



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