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https://issues.apache.org/jira/browse/YARN-1004?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13725476#comment-13725476
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Sandy Ryza commented on YARN-1004:
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[~hitesh], maximum-allocation is just for consistency. My thought is that it
should be scheduler-specific because it's up to the scheduler to honor the
config. Someone could write a new scheduler and not handle it. We have other
configs, such as node-locality-threshold, that function the same for the Fair
and Capacity schedulers as well.
[~bikassaha], I think this is important in that in my experience having these
properties that function differently for different schedulers has made
explaining resource configuration really difficult. I didn't want to delay the
release, but I'll upload a patch today without deprecations and we can decide
where to go from there.
> yarn.scheduler.minimum|maximum|increment-allocation-mb should have scheduler
> ----------------------------------------------------------------------------
>
> Key: YARN-1004
> URL: https://issues.apache.org/jira/browse/YARN-1004
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: scheduler
> Affects Versions: 2.1.0-beta
> Reporter: Sandy Ryza
>
> As yarn.scheduler.minimum-allocation-mb is now a scheduler-specific
> configuration, and functions differently for the Fair and Capacity
> schedulers, it would be less confusing for the config names to include the
> scheduler names, i.e. yarn.scheduler.fair.minimum-allocation-mb,
> yarn.scheduler.capacity.minimum-allocation-mb, and
> yarn.scheduler.fifo.minimum-allocation-mb.
> The same goes for yarn.scheduler.increment-allocation-mb, which only exists
> for the Fair Scheduler, and yarn.scheduler.maximum-allocation-mb, for
> consistency.
> If we wish to preserve backwards compatibility, we can deprecate the old
> configs to the new ones.
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