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From Bheemanagouda A <bmngo...@gmail.com>
Subject This is very likely to create a memory leak (Tomcat 8.5.8)
Date Sun, 22 Jan 2017 19:52:14 GMT
I am seeing these warnings in catalina.out while stopping the tomcat.
Why these errors appearing? Are these harmful? Is simplewebapp actually
leaking memory by not stopping threads? Thanks in Advance.

WARNING [localhost-startStop-2] org.apache.catalina.loader.
WebappClassLoaderBase.clearReferencesThreads The web application
[simplewebapp] appears to have started a thread named [pool-3-thread-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.SynchronousQueue$TransferStack.awaitFulfill(
SynchronousQueue.java:460)
 java.util.concurrent.SynchronousQueue$TransferStack.transfer(
SynchronousQueue.java:362)
 java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
 java.util.concurrent.ThreadPoolExecutor.getTask(
ThreadPoolExecutor.java:1066)
 java.util.concurrent.ThreadPoolExecutor.runWorker(
ThreadPoolExecutor.java:1127)
 java.util.concurrent.ThreadPoolExecutor$Worker.run(
ThreadPoolExecutor.java:617)
 java.lang.Thread.run(Thread.java:745)



Kind Regards,
Bheemanagouda

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