Warning on Blue Box during restart

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bibbinator
Posts: 10
Joined: 03 Jul 2020, 20:02

Warning on Blue Box during restart

Postby bibbinator » 24 Mar 2021, 11:59

Pressing restart in the admin panel, caused the following warning in the console:

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24-Mar-2021 12:39:23.822 WARNING [Thread-9] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [BlueBox] appears to have started a thread named [SFSWorker:Sys:4] 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$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
 java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
 java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
 java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
 java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
 java.lang.Thread.run(Thread.java:748)
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Lapo
Site Admin
Posts: 23008
Joined: 21 Mar 2005, 09:50
Location: Italy

Re: Warning on Blue Box during restart

Postby Lapo » 24 Mar 2021, 12:16

You can safely ignore the error. Tomcat is not responsible for those threads, but it still complains for some reason. :)
Since the JVM is shutting down anyway there won't be any memory leaks :D

Cheers
Lapo
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