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https://issues.apache.org/jira/browse/LOG4J2-1803?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15850066#comment-15850066
]
ASF subversion and git services commented on LOG4J2-1803:
---------------------------------------------------------
Commit 8ce7dbcdf1d8a92bba3f0c8c9429cd4c8c491306 in logging-log4j2's branch
refs/heads/master from rpopma
[ https://git-wip-us.apache.org/repos/asf?p=logging-log4j2.git;h=8ce7dbc ]
LOG4J2-1803 changelog
> JMH generated benchmark classes not included in jar
> ---------------------------------------------------
>
> Key: LOG4J2-1803
> URL: https://issues.apache.org/jira/browse/LOG4J2-1803
> Project: Log4j 2
> Issue Type: Bug
> Components: Core, Performance Benchmarks
> Affects Versions: 2.8
> Reporter: Remko Popma
> Assignee: Ralph Goers
> Fix For: 2.8.1
>
>
> Some time after the 2.7 release, the JMH benchmarks stopped working. When
> trying to execute them, this error occurs:
> {code}
> java.lang.IllegalArgumentException: Benchmark does not match a class
> at org.openjdk.jmh.util.ClassUtils.loadClass(ClassUtils.java:90)
> at org.openjdk.jmh.runner.BaseRunner.runBenchmark(BaseRunner.java:198)
> at org.openjdk.jmh.runner.BaseRunner.runBenchmarks(BaseRunner.java:95)
> at org.openjdk.jmh.runner.ForkedRunner.run(ForkedRunner.java:51)
> at org.openjdk.jmh.runner.ForkedMain.main(ForkedMain.java:68)
> Caused by: java.lang.ClassNotFoundException:
> org.apache.logging.log4j.perf.jmh.generated.FileAppenderBenchmark_julFile
> at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
> at java.lang.Class.forName0(Native Method)
> at java.lang.Class.forName(Class.java:195)
> at org.openjdk.jmh.util.ClassUtils.loadClass(ClassUtils.java:72)
> ... 4 more
> {code}
> When I build the project, the classes generated by JMH under
> log4j-perf/target/generated-sources/annotations are not included in the
> shaded benchmarks.jar or in log4j-perf-2.8.1-SNAPSHOT.jar...
> The cause seems to be a change in the master pom:
> the {{maven-compiler-plugin}} plugin now has the below section which was not
> there in 2.7.
> If I take it out and build only log4j-perf, the benchmarks run without error.
> (But building all modules fails: some problem in log4j-core...)
> {code}
> <executions>
> <execution>
> <!-- disable annotation processing for first pass -->
> <id>default-compile</id>
> <goals>
> <goal>compile</goal>
> </goals>
> <phase>compile</phase>
> <configuration>
> <proc>none</proc>
> </configuration>
> </execution>
> <execution>
> <!-- then do a processing-only pass to generate plugins .dat file -->
> <id>process-plugins</id>
> <goals>
> <goal>compile</goal>
> </goals>
> <phase>process-classes</phase>
> <configuration>
> <proc>only</proc>
> </configuration>
> </execution>
> </executions>
> {code}
> From the log4j-dev mailing list:
> {quote}
> That maven-compiler-plugin config was originally only included in log4j-core
> in order to allow the PluginProcessor annotation processor to re-run against
> log4j-core without needing to split it into its own jar. I'm not sure why
> it's configured for everything now.
> {quote}
> Potentially related: somebody reported on StackOverflow that [their custom
> plugin no longer loads with
> 2.8|http://stackoverflow.com/questions/41938128/log4j-2-8-cannot-load-custom-converters-in-osgi-environment].
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