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https://issues.apache.org/jira/browse/MAPREDUCE-2472?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13028904#comment-13028904
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Hadoop QA commented on MAPREDUCE-2472:
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+1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12478184/mapreduce-2472.1.patch
against trunk revision 1098853.
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 2 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 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 core unit tests.
+1 contrib tests. The patch passed contrib unit tests.
+1 system test framework. The patch passed system test framework compile.
Test results:
https://builds.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/210//testReport/
Findbugs warnings:
https://builds.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/210//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output:
https://builds.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/210//console
This message is automatically generated.
> Extra whitespace in mapred.child.java.opts breaks JVM initialization
> --------------------------------------------------------------------
>
> Key: MAPREDUCE-2472
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2472
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: task-controller
> Affects Versions: 0.20.2, 0.22.0
> Reporter: Todd Lipcon
> Assignee: Aaron T. Myers
> Fix For: 0.22.0
>
> Attachments: mapreduce-2472.0.patch, mapreduce-2472.1.patch
>
>
> When creating taskjvm.sh, we split mapred.child.java.opts on " " and then
> create a quoted argument for each of those results. So, if you have an extra
> space anywhere in this configuration, you get an argument '' in the child
> command line, which the JVM interprets as an empty class name. This results
> in a ClassNotFoundException and the task cannot run.
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