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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-140) Add capacity-scheduler-default.xml to provide a default set of configurations for the capacity scheduler.
Date Fri, 19 Oct 2012 22:30:13 GMT

    [ https://issues.apache.org/jira/browse/YARN-140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13480463#comment-13480463
] 

Hadoop QA commented on YARN-140:
--------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12550024/YARN-140_rev9.patch
  against trunk revision .

    {color:red}-1 patch{color}.  The patch command could not apply the patch.

Console output: https://builds.apache.org/job/PreCommit-YARN-Build/103//console

This message is automatically generated.
                
> Add capacity-scheduler-default.xml to provide a default set of configurations for the
capacity scheduler.
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: YARN-140
>                 URL: https://issues.apache.org/jira/browse/YARN-140
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacityscheduler
>            Reporter: Ahmed Radwan
>            Assignee: Ahmed Radwan
>         Attachments: YARN-140.patch, YARN-140_rev2.patch, YARN-140_rev3.patch, YARN-140_rev4.patch,
YARN-140_rev5_onlyForJenkins.patch, YARN-140_rev5.patch, YARN-140_rev5_svn_mv.patch, YARN-140_rev6_onlyForJenkins.patch,
YARN-140_rev6.patch, YARN-140_rev7_onlyForJenkins.patch, YARN-140_rev8_onlyForJenkins.patch,
YARN-140_rev9.patch, YARN-140_rev9_svn_mv.patch
>
>
> When setting up the capacity scheduler users are faced with problems like:
> {code}
> FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error starting ResourceManager
> java.lang.IllegalArgumentException: Illegal capacity of -1 for queue root
> {code}
> Which basically arises from missing basic configurations, which in many cases, there
is no need to explicitly provide, and a default configuration will be sufficient. For example,
to address the error above, the user need to add a capacity of 100 to the root queue.
> So, we need to add a capacity-scheduler-default.xml, this will be helpful to provide
the basic set of default configurations required to run the capacity scheduler. The user can
still override existing configurations or provide new ones in capacity-scheduler.xml. This
is similar to *-default.xml vs *-site.xml for yarn, core, mapred, hdfs, etc.

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