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https://issues.apache.org/jira/browse/YARN-782?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13683357#comment-13683357
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Hudson commented on YARN-782:
-----------------------------
Integrated in Hadoop-trunk-Commit #3920 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/3920/])
YARN-782. vcores-pcores ratio functions differently from vmem-pmem ratio in
misleading way. (sandyr via tucu) (Revision 1493064)
Result = SUCCESS
tucu : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1493064
Files :
* /hadoop/common/trunk/hadoop-yarn-project/CHANGES.txt
*
/hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java
*
/hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml
*
/hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/NodeStatusUpdaterImpl.java
> vcores-pcores ratio functions differently from vmem-pmem ratio in misleading
> way
> ---------------------------------------------------------------------------------
>
> Key: YARN-782
> URL: https://issues.apache.org/jira/browse/YARN-782
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: nodemanager
> Affects Versions: 2.0.4-alpha
> Reporter: Sandy Ryza
> Assignee: Sandy Ryza
> Priority: Critical
> Fix For: 2.1.0-beta
>
> Attachments: YARN-782-1.patch, YARN-782.patch
>
>
> The vcores-pcores ratio functions differently from the vmem-pmem ratio in the
> sense that the vcores-pcores ratio has an impact on allocations and the
> vmem-pmem ratio does not.
> If I double my vmem-pmem ratio, the only change that occurs is that my
> containers, after being scheduled, are less likely to be killed for using too
> much virtual memory. But if I double my vcore-pcore ratio, my nodes will
> appear to the ResourceManager to contain double the amount of CPU space,
> which will affect scheduling decisions.
> The lack of consistency will exacerbate the already difficult problem of
> resource configuration.
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