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Posted to log4j-dev@logging.apache.org by "Remko Popma (JIRA)" <ji...@apache.org> on 2014/07/06 15:15:34 UTC
[jira] [Commented] (LOG4J2-660) RunLogback throws
ClassCastException
[ https://issues.apache.org/jira/browse/LOG4J2-660?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14053117#comment-14053117 ]
Remko Popma commented on LOG4J2-660:
------------------------------------
Sorry for taking so long to get back.
I believe this error only occurs if slf4j-api cannot find an slf4j implementation.
Did you put both the logback-core-1.0.13.jar and logback-classic-1.0.13.jar files in the classpath?
(I actually also have slf4j-ext-1.7.7.jar in the classpath, but I am not sure if that is required...)
> RunLogback throws ClassCastException
> -------------------------------------
>
> Key: LOG4J2-660
> URL: https://issues.apache.org/jira/browse/LOG4J2-660
> Project: Log4j 2
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.0-rc1
> Environment: MackBook ME865 , OS X 10.9.3
> Reporter: QiChengWei
> Assignee: Remko Popma
> Priority: Minor
>
> execute the main in the PerfTestDriver , running the tests
> tests.add(m("perf-logback.xml", LOGBK, "Sync", i)); cause a ClassCastException
> stacktrace as follows:
> Exception in thread "Thread-1" java.lang.ClassCastException: org.slf4j.helpers.SubstituteLogger cannot be cast to ch.qos.logback.classic.Logger
> at org.apache.logging.log4j.core.async.perftest.RunLogback.runThroughputTest(RunLogback.java:37)
> at org.apache.logging.log4j.core.async.perftest.PerfTest.runTest(PerfTest.java:182)
> at org.apache.logging.log4j.core.async.perftest.MtPerfTest$1.run(MtPerfTest.java:46)
> at java.lang.Thread.run(Thread.java:745)
> SLF4J: The following set of substitute loggers may have been accessed
> SLF4J: during the initialization phase. Logging calls during this
> SLF4J: phase were not honored. However, subsequent logging calls to these
> SLF4J: loggers will work as normally expected.
> SLF4J: See also http://www.slf4j.org/codes.html#substituteLogger
> SLF4J: org.apache.logging.log4j.core.async.perftest.RunLogback
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