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https://issues.apache.org/jira/browse/MAPREDUCE-3784?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13199236#comment-13199236
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Hadoop QA commented on MAPREDUCE-3784:
--------------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12513026/MAPREDUCE-3784.patch
against trunk revision .
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 3 new or modified tests.
-1 javadoc. The javadoc tool appears to have generated 1 warning messages.
+1 javac. The applied patch does not increase the total number of javac
compiler warnings.
+1 eclipse:eclipse. The patch built with eclipse:eclipse.
+1 findbugs. The patch does not introduce any 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/1751//testReport/
Console output:
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1751//console
This message is automatically generated.
> maxActiveApplications(|PerUser) per queue is too low for small clusters
> -----------------------------------------------------------------------
>
> Key: MAPREDUCE-3784
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3784
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Affects Versions: 0.23.0
> Reporter: Ramya Sunil
> Assignee: Arun C Murthy
> Fix For: 0.23.1
>
> Attachments: MAPREDUCE-3784.patch, MAPREDUCE-3784.patch,
> MAPREDUCE-3784.patch, MAPREDUCE-3784.patch, MAPREDUCE-3784.patch
>
>
> We ran into this issue while testing on small clusters.
> On a 7node cluster with 8G per node, for a queue with absolute capacity 30%,
> user limit 100%, maxActiveApplications and maxActiveApplicationsPerUser is
> calculated to be 1.
> This means that even though the queue has 17GB(0.3*8*7), only 1 user can run
> 1 app at a given time queuing up rest of the apps/users. This hurts
> performance on small clusters.
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