The LoggerContext has stopped. We then try to unregister MBeans. This calls 
java.util.logging, which in turn creates a new LoggerContext.  It seems to me 
that we should be preventing this but it isn’t quire clear to me yet how.

Ralph

> On Oct 18, 2014, at 9:55 PM, Ralph Goers <[email protected]> wrote:
> 
> OK. I fixed the unit test.  No I am getting a unit test in log4j-jul to hang. 
> It looks to me that JMX is trying to log using JUL which then routes to Log4j 
> after Log4j has already shutdown.
> 
> "main" prio=5 tid=7fafbc001000 nid=0x103c0c000 in Object.wait() [103c0a000]
>    java.lang.Thread.State: WAITING (on object monitor)
>       at java.lang.Object.wait(Native Method)
>       - waiting on <7d8404f48> (a java.util.HashSet)
>       at java.lang.Object.wait(Object.java:485)
>       at 
> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.unregisterMBean(DefaultMBeanServerInterceptor.java:392)
>       - locked <7d8404f48> (a java.util.HashSet)
>       at 
> com.sun.jmx.mbeanserver.JmxMBeanServer.unregisterMBean(JmxMBeanServer.java:516)
>       at 
> org.apache.logging.log4j.core.jmx.Server.unregisterAllMatching(Server.java:312)
>       at 
> org.apache.logging.log4j.core.jmx.Server.unregisterLoggerContext(Server.java:231)
>       at 
> org.apache.logging.log4j.core.jmx.Server.reregisterMBeansAfterReconfigure(Server.java:142)
>       at 
> org.apache.logging.log4j.core.jmx.Server.reregisterMBeansAfterReconfigure(Server.java:121)
>       at 
> org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:367)
>       - locked <7d85b6cf8> (a org.apache.logging.log4j.core.LoggerContext)
>       at 
> org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:417)
>       - locked <7d85b6cf8> (a org.apache.logging.log4j.core.LoggerContext)
>       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.spi.AbstractLoggerAdapter.getContext(AbstractLoggerAdapter.java:102)
>       at 
> org.apache.logging.log4j.jul.AbstractLoggerAdapter.getContext(AbstractLoggerAdapter.java:34)
>       at 
> org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger(AbstractLoggerAdapter.java:42)
>       at org.apache.logging.log4j.jul.LogManager.getLogger(LogManager.java:89)
>       at java.util.logging.LogManager.demandLogger(LogManager.java:369)
>       at java.util.logging.Logger.demandLogger(Logger.java:290)
>       at java.util.logging.Logger.getLogger(Logger.java:321)
>       - locked <7e0ac5608> (a java.lang.Class for java.util.logging.Logger)
>       at com.sun.jmx.trace.TraceManager.getLogger(TraceManager.java:166)
>       at com.sun.jmx.trace.TraceManager.isSelected(TraceManager.java:197)
>       at com.sun.jmx.trace.Trace.isSelected(Trace.java:89)
>       at com.sun.jmx.mbeanserver.Repository.isTraceOn(Repository.java:68)
>       at com.sun.jmx.mbeanserver.Repository.retrieve(Repository.java:487)
>       at 
> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getMBean(DefaultMBeanServerInterceptor.java:1087)
>       - locked <7d8404e68> (a 
> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor)
>       at 
> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.exclusiveUnregisterMBean(DefaultMBeanServerInterceptor.java:415)
>       at 
> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.unregisterMBean(DefaultMBeanServerInterceptor.java:403)
>       at 
> com.sun.jmx.mbeanserver.JmxMBeanServer.unregisterMBean(JmxMBeanServer.java:516)
>       at 
> org.apache.logging.log4j.core.jmx.Server.unregisterAllMatching(Server.java:312)
>       at 
> org.apache.logging.log4j.core.jmx.Server.unregisterLoggerContext(Server.java:231)
>       at 
> org.apache.logging.log4j.core.jmx.Server.unregisterLoggerContext(Server.java:217)
>       at 
> org.apache.logging.log4j.core.LoggerContext.stop(LoggerContext.java:226)
>       at 
> org.apache.logging.log4j.core.config.Configurator.shutdown(Configurator.java:173)
>       at 
> org.apache.logging.log4j.junit.InitialLoggerContext$1.evaluate(InitialLoggerContext.java:68)
>       at org.junit.rules.RunRules.evaluate(RunRules.java:20)
>       at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
>       at 
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
>       at 
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
>       at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
>       at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
>       at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
>       at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
>       at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
>       at 
> org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
>       at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
>       at 
> org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:264)
>       at 
> org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:153)
>       at 
> org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:124)
>       at 
> org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:200)
>       at 
> org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:153)
>       at 
> org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:103)
> 
> 
> 
> 
> 
> 
>> On Oct 18, 2014, at 7:33 PM, Ralph Goers <[email protected] 
>> <mailto:[email protected]>> wrote:
>> 
>> So I fixed the compilation errors. Now I get an error in one of the unit 
>> tests.  I will have to look into this.
>> 
>> Results :
>> 
>> Tests in error: 
>>   ShutdownCallbackRegistryTest.testShutdownCallbackRegistry:53 ? 
>> ConcurrentModification
>> 
>> Tests run: 743, Failures: 0, Errors: 1, Skipped: 29
>> 
>> Ralph
> 

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