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Posted to log4j-dev@logging.apache.org by "Benjamin Jaton (JIRA)" <ji...@apache.org> on 2016/05/24 16:23:13 UTC
[jira] [Issue Comment Deleted] (LOG4J2-1256) strange classloader
failure
[ https://issues.apache.org/jira/browse/LOG4J2-1256?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Benjamin Jaton updated LOG4J2-1256:
-----------------------------------
Comment: was deleted
(was: I am using a custom URLClassLoader to load my jars:
Thread.currentThread().setContextClassLoader(...);
Then I load and run a main class and I end up with a similar stacktrace:
{CODE}Exception in thread "Thread-5" java.lang.NoClassDefFoundError: org/apache/logging/log4j/core/impl/ThrowableProxy
at org.apache.logging.log4j.core.impl.Log4jLogEvent.getThrownProxy(Log4jLogEvent.java:482)
at org.apache.logging.log4j.core.pattern.ExtendedThrowablePatternConverter.format(ExtendedThrowablePatternConverter.java:64)
at org.apache.logging.log4j.core.pattern.PatternFormatter.format(PatternFormatter.java:36)
at org.apache.logging.log4j.core.layout.PatternLayout$PatternSerializer.toSerializable(PatternLayout.java:292)
at org.apache.logging.log4j.core.layout.PatternLayout.toSerializable(PatternLayout.java:206)
at org.apache.logging.log4j.core.layout.PatternLayout.toSerializable(PatternLayout.java:56)
at org.apache.logging.log4j.core.layout.AbstractStringLayout.toByteArray(AbstractStringLayout.java:148)
at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.append(AbstractOutputStreamAppender.java:112)
at org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:152)
at org.apache.logging.log4j.core.config.AppenderControl.callAppender0(AppenderControl.java:125)
at org.apache.logging.log4j.core.config.AppenderControl.callAppenderPreventRecursion(AppenderControl.java:116)
at org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:84)
at org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:390)
at org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent(LoggerConfig.java:378)
at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:362)
at org.apache.logging.log4j.core.config.LoggerConfig.logParent(LoggerConfig.java:384)
at org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent(LoggerConfig.java:379)
at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:362)
at org.apache.logging.log4j.core.config.LoggerConfig.logParent(LoggerConfig.java:384)
at org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent(LoggerConfig.java:379)
at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:362)
at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:352)
at org.apache.logging.log4j.core.config.AwaitCompletionReliabilityStrategy.log(AwaitCompletionReliabilityStrategy.java:63)
at org.apache.logging.log4j.core.Logger.logMessage(Logger.java:147)
at org.apache.logging.log4j.spi.AbstractLogger.logMessage(AbstractLogger.java:1011)
at org.apache.logging.log4j.spi.AbstractLogger.logIfEnabled(AbstractLogger.java:988)
at org.apache.logging.log4j.spi.AbstractLogger.error(AbstractLogger.java:402)
{CODE}
Note that in my case it's not the inner class that can't be found, just ThrowableProxy. But it is similar in that it can find other classes from log4j-core, but not this one.)
> strange classloader failure
> ---------------------------
>
> Key: LOG4J2-1256
> URL: https://issues.apache.org/jira/browse/LOG4J2-1256
> Project: Log4j 2
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.5
> Reporter: Dan Armbrust
>
> I am utilizing log4j in a maven mojo extension (code that plugs into maven, and executes as part of a mojo build)
> My code is encountering an internal error of its own - but when the code attempts to log the error, this happens:
> {code}
> Exception in thread "JavaFX Application Thread" java.lang.NoClassDefFoundError: org/apache/logging/log4j/core/impl/ThrowableProxy$CacheEntry
> at org.apache.logging.log4j.core.impl.ThrowableProxy.toCacheEntry(ThrowableProxy.java:560)
> at org.apache.logging.log4j.core.impl.ThrowableProxy.toExtendedStackTrace(ThrowableProxy.java:603)
> at org.apache.logging.log4j.core.impl.ThrowableProxy.<init>(ThrowableProxy.java:135)
> at org.apache.logging.log4j.core.impl.ThrowableProxy.<init>(ThrowableProxy.java:117)
> at org.apache.logging.log4j.core.impl.Log4jLogEvent.getThrownProxy(Log4jLogEvent.java:482)
> at org.apache.logging.log4j.core.pattern.ExtendedThrowablePatternConverter.format(ExtendedThrowablePatternConverter.java:64)
> at org.apache.logging.log4j.core.pattern.PatternFormatter.format(PatternFormatter.java:36)
> at org.apache.logging.log4j.core.layout.PatternLayout$PatternSerializer.toSerializable(PatternLayout.java:292)
> at org.apache.logging.log4j.core.layout.PatternLayout.toSerializable(PatternLayout.java:206)
> at org.apache.logging.log4j.core.layout.PatternLayout.toSerializable(PatternLayout.java:56)
> at org.apache.logging.log4j.core.layout.AbstractStringLayout.toByteArray(AbstractStringLayout.java:148)
> at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.append(AbstractOutputStreamAppender.java:112)
> at org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:152)
> at org.apache.logging.log4j.core.config.AppenderControl.callAppender0(AppenderControl.java:125)
> at org.apache.logging.log4j.core.config.AppenderControl.callAppenderPreventRecursion(AppenderControl.java:116)
> at org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:84)
> at org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:390)
> at org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent(LoggerConfig.java:378)
> at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:362)
> at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:352)
> at org.apache.logging.log4j.core.config.AwaitCompletionReliabilityStrategy.log(AwaitCompletionReliabilityStrategy.java:63)
> at org.apache.logging.log4j.core.Logger.logMessage(Logger.java:147)
> at org.apache.logging.log4j.spi.AbstractLogger.logMessage(AbstractLogger.java:1011)
> at org.apache.logging.log4j.spi.AbstractLogger.logIfEnabled(AbstractLogger.java:988)
> at org.apache.logging.log4j.spi.AbstractLogger.warn(AbstractLogger.java:1264)
> at gov.vha.isaac.ochre.api.task.TimedTask.failed(TimedTask.java:148)
> at javafx.concurrent.Task.setState(Task.java:708)
> at javafx.concurrent.Task$TaskCallable.lambda$call$502(Task.java:1453)
> at com.sun.javafx.application.PlatformImpl.lambda$null$174(PlatformImpl.java:295)
> at java.security.AccessController.doPrivileged(Native Method)
> at com.sun.javafx.application.PlatformImpl.lambda$runLater$175(PlatformImpl.java:294)
> at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
> at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
> at com.sun.glass.ui.gtk.GtkApplication.lambda$null$50(GtkApplication.java:139)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.ClassNotFoundException: org.apache.logging.log4j.core.impl.ThrowableProxy$CacheEntry
> at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50)
> at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:271)
> at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:247)
> at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:239)
> ... 35 more
> {code}
> This is very odd to me, as the class not found is an inner class, inside of a class that is obviously on the classpath (from the rest of the stack trace)
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