[LOG4J2-1331] Web apps fail to start

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 2.4.1, 2.5
• Component/s: Web/Servlet

Environment

Windows Server, Java 7, Tomcat 7, JSF 1.2

• Assignee: Unassigned
• Reporter: Nicola Isotta
• Created: 25/Mar/16 09:26
• Updated: 29/Mar/16 16:25
• Resolved: 29/Mar/16 16:16

Description

After upgrading from Log4j 2.3, my webapps fail to start after a Tomcat restart. Actually, the first one starts correctly (even in multiple versions), while the others' startup fails.
These are the causes:

SEVERE: Error configuring application listener of class it.mycompany.filters.MyFilter
java.lang.NoClassDefFoundError: Could not initialize class org.apache.logging.log4j.core.lookup.MainMapLookup
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at org.apache.logging.log4j.core.util.ReflectionUtil.instantiate(ReflectionUtil.java:185)
at org.apache.logging.log4j.core.lookup.Interpolator.<init>(Interpolator.java:65)
at org.apache.logging.log4j.core.config.AbstractConfiguration.doConfigure(AbstractConfiguration.java:346)
at org.apache.logging.log4j.core.config.AbstractConfiguration.start(AbstractConfiguration.java:161)
at org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:361)
at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:426)
at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:442)
at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:138)
at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:147)
at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:41)
at org.apache.logging.log4j.LogManager.getContext(LogManager.java:175)
at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:426)
at it.emmeduei.drijsf.filtri.SessionListener.<clinit>(SessionListener.java:21)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:116)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4932)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5524)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:649)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1081)
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1877)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

and, similar:

SEVERE: Exception sending context initialized event to listener instance of class org.apache.logging.log4j.web.Log4jServletContextListener
java.lang.NoClassDefFoundError: Could not initialize class org.apache.logging.log4j.core.lookup.MainMapLookup

SEVERE: Exception sending context destroyed event to listener instance of class org.apache.logging.log4j.web.Log4jServletContextListener
java.lang.IllegalStateException: Cannot stop this Log4jWebInitializer because it has not started.

This did not happen with 2.3. The only thing I did was changing the jars, problem occurs with both 2.4.1 e 2.5.

EDIT: even if the "first" web app starts, logging doesn't.