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https://issues.apache.org/jira/browse/HADOOP-6871?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12892045#action_12892045
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Hadoop QA commented on HADOOP-6871:
-----------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12450115/HADOOP-6871-1.patch
against trunk revision 967220.
+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 findbugs. The patch does not introduce any new Findbugs 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.
Test results:
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/632/testReport/
Findbugs warnings:
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/632/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results:
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/632/artifact/trunk/build/test/checkstyle-errors.html
Console output:
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/632/console
This message is automatically generated.
> When the value of a configuration key is set to its unresolved form, it
> causes the IllegalStateException in Configuration.get() stating that
> substitution depth is too large.
> -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-6871
> URL: https://issues.apache.org/jira/browse/HADOOP-6871
> Project: Hadoop Common
> Issue Type: Bug
> Components: conf
> Reporter: Arvind Prabhakar
> Attachments: HADOOP-6871-1.patch, HADOOP-6871.patch
>
>
> When a configuration value is set to its unresolved expression string, it
> leads to recursive substitution attempts in
> {{Configuration.substituteVars(String)}} method until the max substitution
> check kicks in and raises an IllegalStateException indicating that the
> substitution depth is too large. For example, the configuration key
> "{{foobar}}" with a value set to "{{$\{foobar\}}}" will cause this behavior.
> While this is not a usual use case, it can happen in build environments where
> a property value is not specified and yet being passed into the test
> mechanism leading to failures due to this limitation.
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