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https://issues.apache.org/jira/browse/LOG4J2-1051?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14582930#comment-14582930
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Gary Gregory commented on LOG4J2-1051:
--------------------------------------
I'm thinking that this class used to do more than it does now and the checks
are now irrelevant. Or that is is WIP.
We do want to run on GAE, so we should try to degrade behavior like
{{LoaderUtil}} now does instead of blowing up in a static initializer which
helps no one.
Hopefully, [~lukaszlenart] will reply soon with the result of the experiment I
suggested.
I do miss Matt. I hope he is OK.
> NoClassDefFoundError when starting app on Google App Engine
> -----------------------------------------------------------
>
> Key: LOG4J2-1051
> URL: https://issues.apache.org/jira/browse/LOG4J2-1051
> Project: Log4j 2
> Issue Type: Bug
> Components: Core
> Environment: JDK7, Google App Engine, Apache Struts 2.5
> Reporter: Lukasz Lenart
>
> I have an app that uses
> - log4j-api
> - log4j-core
> - log4j-web
> and after deploying it to GAE I see such exception in the logs
> {noformat}
> 2015-06-10 23:01:05.768
> Uncaught exception from servlet
> java.lang.NoClassDefFoundError: Could not initialize class
> org.apache.logging.log4j.core.util.Loader
> at
> org.apache.logging.log4j.core.lookup.Interpolator.<init>(Interpolator.java:114)
> at
> org.apache.logging.log4j.core.config.AbstractConfiguration.<init>(AbstractConfiguration.java:105)
> at
> org.apache.logging.log4j.core.config.NullConfiguration.<init>(NullConfiguration.java:30)
> at
> org.apache.logging.log4j.core.LoggerContext.<clinit>(LoggerContext.java:62)
> at
> org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.locateContext(ClassLoaderContextSelector.java:145)
> at
> org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(ClassLoaderContextSelector.java:70)
> at
> org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(ClassLoaderContextSelector.java:57)
> at
> org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:142)
> at
> org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:42)
> at org.apache.logging.log4j.LogManager.getContext(LogManager.java:175)
> at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:426)
> at
> org.apache.struts2.tiles.StrutsTilesListener.<clinit>(StrutsTilesListener.java:50)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
> at java.lang.Class.newInstance(Class.java:375)
> at
> org.mortbay.jetty.webapp.WebXmlConfiguration.newListenerInstance(WebXmlConfiguration.java:650)
> at
> org.mortbay.jetty.webapp.WebXmlConfiguration.initListener(WebXmlConfiguration.java:631)
> at
> org.mortbay.jetty.webapp.WebXmlConfiguration.initWebXmlElement(WebXmlConfiguration.java:368)
> at
> org.mortbay.jetty.webapp.WebXmlConfiguration.initialize(WebXmlConfiguration.java:289)
> at
> org.mortbay.jetty.webapp.WebXmlConfiguration.configure(WebXmlConfiguration.java:222)
> at
> org.mortbay.jetty.webapp.WebXmlConfiguration.configureWebApp(WebXmlConfiguration.java:180)
> at
> org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1247)
> at
> org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
> at
> org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)
> at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
> at
> com.google.apphosting.runtime.jetty.AppVersionHandlerMap.createHandler(AppVersionHandlerMap.java:199)
> at
> com.google.apphosting.runtime.jetty.AppVersionHandlerMap.getHandler(AppVersionHandlerMap.java:174)
> at
> com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:134)
> at
> com.google.apphosting.runtime.JavaRuntime$RequestRunnable.run(JavaRuntime.java:527)
> at
> com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:437)
> at
> com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:444)
> at
> com.google.tracing.CurrentContext.runInContext(CurrentContext.java:230)
> at
> com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:308)
> at
> com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:300)
> at
> com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:441)
> at
> com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:251)
> at java.lang.Thread.run(Thread.java:745)
> {noformat}
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