[logback-user] java.lang.ClassCircularityError: java/util/logging/LogRecord

ceki ceki at qos.ch
Tue Aug 28 17:38:46 CEST 2012

On 28.08.2012 16:22, Sergey Parhomenko wrote:
> Hi,
> I am using logback (latest version) on Tomcat, and have this error when
> trying to start the application:
>     /Exception in thread "RMI RenewClean-<ip>:<port>"
>     java.lang.ClassCircularityError: java/util/logging/LogRecord/
>     /at
>     org.slf4j.bridge.SLF4JBridgeHandler.getSLF4JLogger(SLF4JBridgeHandler.java:200)/
>     /at
>     org.slf4j.bridge.SLF4JBridgeHandler.publish(SLF4JBridgeHandler.java:289)/
>     /at java.util.logging.Logger.log(Logger.java:458)/
>     /at java.util.logging.Logger.doLog(Logger.java:480)/
>     /at java.util.logging.Logger.logp(Logger.java:596)/
> The error is blocking Tomcat startup.
> The application has logback and jul-over-slf4j bridge JARs inside, and
> is using a servlet context listener to run
> /SLF4JBridgeHandler.removeHandlersForRootLogger()/ and
> /SLF4JBridgeHandler.install()/ on startup. The /logback.xml/ used has
> /ch.qos.logback.classic.jul.LevelChangePropagator/ context listener in
> it, with /resetJUL/ set to /true/.
> I saw a thread on this mailing list in February 2011
> <http://mailman.qos.ch/pipermail/slf4j-user/2011-February/001044.html> with
> the similar issue so it might be quite old. Tomcat version is 7, but the
> mail list thread and this StackOverflow
> <http://stackoverflow.com/questions/2656565/classcircularityerror-when-running-tomcat6-from-eclipse>
> question are using Tomcat 6 and having the same problem.
> As the last answer on StackOverflow correctly says, error is
> reproducible only if the /LevelChangePropagator/ element is in the
> beginning of /logback.xml/. Moving it to the end of the file fixes the
> issue, so it has an easy workaround.
> If you have problems reproducing it please let me know, I'll try to
> provide a test project.

Please do. You could attach it to [1] which would be very much appreciated.

[1] http://jira.qos.ch/browse/LOGBACK-740

> --
> Best regards,
> Sergey Parhomenko


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