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From "Matt Sicker (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LOG4J2-1259) Log4j threads are leaking on Tomcat shutdown
Date Tue, 20 Sep 2016 14:45:20 GMT

    [ https://issues.apache.org/jira/browse/LOG4J2-1259?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15506777#comment-15506777
] 

Matt Sicker commented on LOG4J2-1259:
-------------------------------------

It'll be in 2.7, and we're getting read to release that within the next week or so. We almost
began a release yesterday, but we found a regression we're investigating first.

> Log4j threads are leaking on Tomcat shutdown
> --------------------------------------------
>
>                 Key: LOG4J2-1259
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-1259
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: Appenders
>    Affects Versions: 2.5
>            Reporter: Misagh Moayyed
>
> Running log4j2 v2.5 with disruptor 3.3.x. AsyncLoggers configured. log4j-web also included
in the web application deployed in Tomcat 8. The context listener is correctly starting up
and shutting down, catalina.properties does not include the log4j*.jar entry. Yet I see:
> {code}
> 20-Jan-2016 14:59:26.322 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads
The web application [cas-server-webapp-4.3.0-SNAPSHOT] appears to have started a thread named
[Log4j2-Log4j2Scheduled-5] but has failed to stop it. This is very likely to create a memory
leak. Stack trace of thread:
>  sun.misc.Unsafe.park(Native Method)
>  java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
>  java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
>  java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)
>  java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
>  java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)
>  java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
>  java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>  java.lang.Thread.run(Thread.java:745)
> 20-Jan-2016 14:59:26.336 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads
The web application [cas-server-webapp-4.3.0-SNAPSHOT] appears to have started a thread named
[Log4j2-AsyncLoggerConfig-6] but has failed to stop it. This is very likely to create a memory
leak. Stack trace of thread:
>  sun.misc.Unsafe.park(Native Method)
>  java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
>  java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
>  com.lmax.disruptor.BlockingWaitStrategy.waitFor(BlockingWaitStrategy.java:45)
>  com.lmax.disruptor.ProcessingSequenceBarrier.waitFor(ProcessingSequenceBarrier.java:56)
>  com.lmax.disruptor.BatchEventProcessor.run(BatchEventProcessor.java:124)
>  java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>  java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>  java.lang.Thread.run(Thread.java:745)
> {code}



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