Hi Ceki, I've attached the test project to LOGBACK-740. Sorry for taking time, cutting our codebase to include only the artifacts you need to reproduce the issue took more time than expected. Somewhere on the way of cutting the code, the message changed from *java.lang.ClassCircularityError: java/util/logging/LogRecord* to *java.lang.ClassCircularityError: org/slf4j/helpers/NOPLogger*. I hope that's still the same error. -- Best regards, Sergey Parhomenko On 28 August 2012 17:38, ceki <ceki@qos.ch> wrote:
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<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<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<http://jira.qos.ch/browse/LOGBACK-740>
--
Best regards, Sergey Parhomenko
-- Ceki http://tinyurl.com/proLogback ______________________________**_________________ Logback-user mailing list Logback-user@qos.ch http://mailman.qos.ch/mailman/**listinfo/logback-user<http://mailman.qos.ch/mailman/listinfo/logback-user>