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https://issues.apache.org/jira/browse/YARN-9326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16779296#comment-16779296
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Wilfred Spiegelenburg commented on YARN-9326:
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Thanks [~adam.antal] for following up on YARN-8662
* I looked at the documentation and am missing the changes to the
{{minResources}}. As I stated in YARN-8662 the {{minResources}} tag also
handles % signs in its definition. That is not mentioned in any style example.
We need to add it for new and old style definitions.
* New style resources for all settings can use % which is not shown. I am thus
still missing the example for new style resources that use the percentage in
all settings:
{code}
vcores=X%, memory-mb=Y%
{code}
* The other thing that is still not clear in the update is that the only case
in which we default the resource types not specified to either 0 or the maximum
is when we use the new style resources. That should be combined with making it
even clearer that resource types should *not* be used in combination with old
style definitions.
> 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
>
>
> 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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