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From "Sandy Ryza (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-1228) Clean up Fair Scheduler configuration loading
Date Mon, 23 Sep 2013 23:08:02 GMT

     [ https://issues.apache.org/jira/browse/YARN-1228?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Sandy Ryza updated YARN-1228:

    Summary: Clean up Fair Scheduler configuration loading  (was: Don't allow other file than
fair-scheduler.xml to be Fair Scheduler allocations file)
> Clean up Fair Scheduler configuration loading
> ---------------------------------------------
>                 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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