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https://issues.apache.org/jira/browse/YARN-9326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16780579#comment-16780579
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Adam Antal commented on YARN-9326:
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Oh, there are lots of trouble around this help page. I did not touched other
parts on purpose, just wanted to add some clarification about new format, but
it looks we do need to do so.
Can there be any other outdated/not good information around FairScheduler? Was
it revised when custom resource types were pushed in? I think I'd rather focus
on fixing just the formats (including your suggestion, [~wilfreds]), but if we
found much more errors, it'd make sense to file some more new jiras to fix
those as well. What is your opinion?
> 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
> Attachments: YARN-9326.001.patch, YARN-9326.002.patch,
> YARN-9326.003.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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