ThreadLocal vars leak on Tomcat

OrientDB Version: 3.1.9

Java Version: JDK8

OS: OSX

When working with embedded DB with Tomcat 8 on finish I have plenty of such records.

15-Mar-2021 13:51:28.673 SEVERE [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [ROOT] created a ThreadLocal with key of type [java.lang.ThreadLocal] (value [java.lang.ThreadLocal@4801cdd1]) and a value of type [com.orientechnologies.common.concur.lock.ScalableRWLock.ReadersEntry] (value [com.orientechnologies.common.concur.lock.ScalableRWLock$ReadersEntry@21790418]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.

after 5 min waiting i got

15-Mar-2021 13:52:22.743 INFO [Timer-22] org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading Illegal access: this web application instance has been stopped already. Could not load [com.googlecode.concurrentlinkedhashmap.ConcurrentLinkedHashMap$Values]. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.
	java.lang.IllegalStateException: Illegal access: this web application instance has been stopped already. Could not load [com.googlecode.concurrentlinkedhashmap.ConcurrentLinkedHashMap$Values]. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.
		at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading(WebappClassLoaderBase.java:1378)
		at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForClassLoading(WebappClassLoaderBase.java:1366)
		at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1218)
		at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1180)
		at com.googlecode.concurrentlinkedhashmap.ConcurrentLinkedHashMap.values(ConcurrentLinkedHashMap.java:954)
		at com.orientechnologies.orient.core.db.OCachedDatabasePoolFactoryImpl.cleanUpCache(OCachedDatabasePoolFactoryImpl.java:67)
		at com.orientechnologies.orient.core.db.OCachedDatabasePoolFactoryImpl.access$100(OCachedDatabasePoolFactoryImpl.java:21)
		at com.orientechnologies.orient.core.db.OCachedDatabasePoolFactoryImpl$1.run(OCachedDatabasePoolFactoryImpl.java:59)
		at java.util.TimerThread.mainLoop(Timer.java:555)
		at java.util.TimerThread.run(Timer.java:505)
Exception in thread "Timer-22" java.lang.NoClassDefFoundError: com/googlecode/concurrentlinkedhashmap/ConcurrentLinkedHashMap$Values
	at com.googlecode.concurrentlinkedhashmap.ConcurrentLinkedHashMap.values(ConcurrentLinkedHashMap.java:954)
	at com.orientechnologies.orient.core.db.OCachedDatabasePoolFactoryImpl.cleanUpCache(OCachedDatabasePoolFactoryImpl.java:67)
	at com.orientechnologies.orient.core.db.OCachedDatabasePoolFactoryImpl.access$100(OCachedDatabasePoolFactoryImpl.java:21)
	at com.orientechnologies.orient.core.db.OCachedDatabasePoolFactoryImpl$1.run(OCachedDatabasePoolFactoryImpl.java:59)
	at java.util.TimerThread.mainLoop(Timer.java:555)
	at java.util.TimerThread.run(Timer.java:505)
Caused by: java.lang.ClassNotFoundException: Illegal access: this web application instance has been stopped already. Could not load [com.googlecode.concurrentlinkedhashmap.ConcurrentLinkedHashMap$Values]. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.
	at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForClassLoading(WebappClassLoaderBase.java:1368)
	at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1218)
	at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1180)
	... 6 more
Caused by: java.lang.IllegalStateException: Illegal access: this web application instance has been stopped already. Could not load [com.googlecode.concurrentlinkedhashmap.ConcurrentLinkedHashMap$Values]. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.
	at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading(WebappClassLoaderBase.java:1378)
	at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForClassLoading(WebappClassLoaderBase.java:1366)
	... 8 more

Thanks