Misagh Moayyed created LOG4J2-1259:
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Summary: 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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