Sandy Ryza created YARN-1228:
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Summary: Don't allow other file than fair-scheduler.xml to be Fair
Scheduler allocations file
Key: YARN-1228
URL: https://issues.apache.org/jira/browse/YARN-1228
Project: Hadoop YARN
Issue Type: Improvement
Components: scheduler
Affects Versions: 2.1.1-beta
Reporter: Sandy Ryza
Currently the Fair Scheduler is configured in two ways
* An allocations file that has a different format than the standard Hadoop
configuration file, which makes it easier to specify hierarchical objects like
queues and their properties.
* With properties like yarn.scheduler.fair.max.assign that are specified in the
standard Hadoop configuration format.
The standard and default way of configuring it is to use fair-scheduler.xml as
the allocations file and to put the yarn.scheduler properties in yarn-site.xml.
It is also possible to specify a different file as the allocations file, and to
place the yarn.scheduler properties in fair-scheduler.xml, which will be
interpreted as in the standard Hadoop configuration format. This flexibility
is both confusing and unnecessary. There's no need to keep around the second
way.
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