Dan Armbrust created LOG4J2-1256:
------------------------------------
Summary: 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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