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https://issues.apache.org/jira/browse/MAPREDUCE-3325?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13142313#comment-13142313
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Thomas Graves commented on MAPREDUCE-3325:
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documentation changes only - tests don't apply.
> Improvements to CapacityScheduler doc
> -------------------------------------
>
> Key: MAPREDUCE-3325
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3325
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: mrv2
> Affects Versions: 0.23.0
> Reporter: Thomas Graves
> Assignee: Thomas Graves
> Attachments: MAPREDUCE-3325.patch
>
>
> I noticed the following issues with the capacity scheduler doc:
> ./hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/CapacityScheduler.apt.vm
> - In overview section, 3rd paragraph, sentence "There is an added benefit
> that an organization can access any excess capacity no being used by others".
> No should be not.
> - in overview section, 4th paragraph. dispropotionate misspelled
> - in features section, under multitenancy - monopolizing is misspelled.
> - in features section, under operability - it doesn't say if you can delete
> queues at runtime? I see there is a note at the end but perhaps that can be
> added into the other sections to since its easy to miss that Note at the very
> end.
> - in features section - hierarchy and Hierarchical mispelled.
> - under configuration section the class to turn on to use capacity scheduler
> should be:
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler
>
> - section on setting up queues, 4th sentence - hierarchy misspelled as
> heirarcy and heirarchy.
> - I think specifying how a user has to specify the queue when running a
> job/app would be useful information. Especially with the new hierarchical
> queues. Does the user have to specify the entire path like a.b.c or can they
> just specify c.
> - under "Running and Pending Application Limits" section, property
> "yarn.scheduler.capacity.maximum-applications", they are referred to them as
> jobs, I believe that should be applications.
> - misspelled concurrently as concurently in same section of
> maximum-applications.
> - I think it should specify the defaults (if any) for the config vars. Also
> what format are they specified in - int, float,etc?
> - might be nice to say it doesn't support preemption.
> - under admin options yarn.scheduler.capacity.<queue-path>.state - queues
> misspelled as queueus
> - under changing queue configuration it should have "yarn" in front of the
> "rmadmin -refreshQueues". Similarly a few lines down at
> "$YARN_HOME/bin/rmadmin -refreshQueues"
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