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Type:
Improvement
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Status: Resolved
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: 3.2.0
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Component/s: docs, documentation, fairscheduler, yarn
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Labels:None
The FairScheduler's configuration has the following defaults (from the code: javadoc):
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.
This is not documented in the hadoop yarn site FairScheduler.html. It is quite intuitive, but still need to be documented though.