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https://issues.apache.org/jira/browse/YARN-55?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13443687#comment-13443687
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Hitesh Shah commented on YARN-55:
---------------------------------
Typo in previous comment - that should have bee MAPREDUCE-4578 which is now
moved to YARN as YARN-56.
> YARN needs to properly check the NM,AM memory properties in yarn-site.xml and
> mapred.xml and report errors accordingly.
> -----------------------------------------------------------------------------------------------------------------------
>
> Key: YARN-55
> URL: https://issues.apache.org/jira/browse/YARN-55
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Affects Versions: 2.2.0-alpha, 0.23.3
> 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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