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https://jira.codehaus.org/browse/MNG-5603?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=343259#comment-343259
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jay vyas commented on MNG-5603:
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FYI any one looking for some SO points, i originally posted this here:
http://stackoverflow.com/questions/22498586/maven-surefire-exclusion-is-it-buggy
> Excludes tags result in unprovoked ClassNotFound Exceptions
> -----------------------------------------------------------
>
> Key: MNG-5603
> URL: https://jira.codehaus.org/browse/MNG-5603
> Project: Maven 2 & 3
> Issue Type: Bug
> Reporter: jay vyas
>
> My full pom file is here for reference:
> https://gist.github.com/jayunit100/9644221 (this is a version of hadoop that
> im playing with in the source code).
> Ive found some very odd behaviour in surefire:
> {noformat}
> mvn test
> {noformat}
> With the following exclusion filter under the "excludes" tag:
> {noformat}
> <groupId>org.apache.maven.plugins</groupId>
> <artifactId>maven-surefire-plugin</artifactId>
> <configuration>
> <systemPropertyVariables>
> <startKdc>${startKdc}</startKdc>
> <kdc.resource.dir>${kdc.resource.dir}</kdc.resource.dir>
> </systemPropertyVariables>
> <properties>
> <property>
> <name>listener</name>
> <value>org.apache.hadoop.test.TimedOutTestsListener</value>
> </property>
> </properties>
> <excludes>
> <exclude>asbdfoin</exclude>
> </excludes>
> </configuration>
> {noformat}
> Results in an exception like this:
> {noformat}
> [ERROR] Failed to execute goal
> org.apache.maven.plugins:maven-surefire-plugin:2.16:test
> (default-test) on project hadoop-common: Execution default-test of goal
> org.apache.maven.plugins:maven-surefire-plugin:2.16:test failed:
> java.lang.NoClassDefFoundError: EmptyRequestProto; nested exception is
> java.lang.NoClassDefFoundError: EmptyRequestProto -> [Help 1]
> {noformat}
> In otherwords: Exclusion filters can result in NoClassDefFoundError messages,
> when the exclusion filter doesn't match anything at all.
> My question : How could the maven surefire exclusion filter cause a
> ClassNotFound error to manifest ? If anything, I would expect it to REDUCE
> the amount of attempts to load classes, not increase them.
> FYI, some color on this: The class which is causing this "NotFound" exception
> itself is an inner class:
> {noformat}
> public static final class EmptyRequestProto extends
> com.google.protobuf.GeneratedMessage
> {noformat}
> I have seen SUREFIRE-988â, and possibly its related, but I the fact that my
> "exclude" filter doesnt match ANY class in the code base, it might be
> distinct.
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