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https://issues.apache.org/jira/browse/MAPREDUCE-3205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13132984#comment-13132984
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Hadoop QA commented on MAPREDUCE-3205:
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-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12500219/mr-3205.txt
against trunk revision .
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 16 new or modified tests.
+1 javadoc. The javadoc tool did not generate any warning messages.
+1 javac. The applied patch does not increase the total number of javac
compiler warnings.
-1 findbugs. The patch appears to introduce 160 new Findbugs (version
1.3.9) warnings.
+1 release audit. The applied patch does not increase the total number of
release audit warnings.
+1 core tests. The patch passed unit tests in .
+1 contrib tests. The patch passed contrib unit tests.
Test results:
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1106//testReport/
Findbugs warnings:
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1106//artifact/trunk/hadoop-mapreduce-project/patchprocess/newPatchFindbugsWarningshadoop-mapreduce-client-common.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1106//artifact/trunk/hadoop-mapreduce-project/patchprocess/newPatchFindbugsWarningshadoop-mapreduce-client-core.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1106//artifact/trunk/hadoop-mapreduce-project/patchprocess/newPatchFindbugsWarningshadoop-mapreduce-client-app.html
Console output:
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1106//console
This message is automatically generated.
> MR2 memory limits should be pmem, not vmem
> ------------------------------------------
>
> Key: MAPREDUCE-3205
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3205
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: mrv2, nodemanager
> Affects Versions: 0.23.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Attachments: mr-3205.txt, mr-3205.txt, mr-3205.txt, mr-3205.txt,
> mr-3205.txt
>
>
> Currently, the memory resources requested for a container limit the amount of
> virtual memory used by the container. On my test clusters, at least, Java
> processes take up nearly twice as much vmem as pmem - a Java process running
> with -Xmx500m uses 935m of vmem and only about 560m of pmem.
> This will force admins to either under-utilize available physical memory, or
> oversubscribe it by configuring the available resources on a TT to be larger
> than the true amount of physical RAM.
> Instead, I would propose that the resource limit apply to pmem, and allow the
> admin to configure a "vmem overcommit ratio" which sets the vmem limit as a
> function of pmem limit.
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