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From "Anil Gupta (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4508) YARN needs to properly check the NM,AM memory properties in yarn-site.xml and mapred.xml and report errors accordingly.
Date Fri, 03 Aug 2012 18:31:02 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4508?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13428280#comment-13428280
] 

Anil Gupta commented on MAPREDUCE-4508:
---------------------------------------

Hi Hitesh,

If you think that MAPREDUCE-3796 will cover the test case of checking that yarn.nodemanager.resource.memory-mb
>  yarn.app.mapreduce.am.resource.mb and take appropriate actions accordingly then you
can close it as dup of MAPREDUCE-3796.

Thanks,
Anil Gupta
                
> YARN needs to properly check the NM,AM memory properties in yarn-site.xml and mapred.xml
and report errors accordingly.
> -----------------------------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-4508
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4508
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: nodemanager, resourcemanager
>    Affects Versions: 2.0.0-alpha
>         Environment: CentOs6.0, Hadoop2.0.0 Alpha
>            Reporter: Anil Gupta
>              Labels: Map, Reduce, YARN
>
> Please refer to this discussion on the Hadoop Mailing list:
> http://comments.gmane.org/gmane.comp.jakarta.lucene.hadoop.user/33110
> Summary:
> I was running YARN(Hadoop2.0.0 Alpha) on a 8 datanode, 4 admin node Hadoop/HBase cluster.
My datanodes were only having 3.2GB of memory. So, i configured the yarn.nodemanager.resource.memory-mb
property in yarn-site.xml to 1200. After setting the property if i run any Yarn Job then the
NodemManager wont be able to start any Map task since by default the yarn.app.mapreduce.am.resource.mb
property is set to 1500 MB in mapred-site.xml. 
> Expected Behavior: NodeManager should give an error if yarn.app.mapreduce.am.resource.mb
>= yarn.nodemanager.resource.memory-mb.
> Please let me know if more information is required.

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