<div dir="ltr"><div>I don't think this is an item to be concerned about -- but not leaving any stones upturned.<br><br></div><div>Has anyone else come across message below on Tomcat shutdown in catalina.out? What did you do to fix it? Or ignore? Versions at email tail-end.<br><br></div><div>Thanks.<br><br></div><div>catalina.out:<br></div><div><br>16-Dec-2016 16:35:35.956 INFO [main] org.apache.catalina.core.StandardServer.await A valid shutdown command was received via the shutdown port. Stopping the Server instance.<br>16-Dec-2016 16:35:35.957 INFO [main] org.apache.coyote.AbstractProtocol.pause Pausing ProtocolHandler ["ajp-nio-127.0.0.1-8009"]<br>16-Dec-2016 16:35:36.010 INFO [main] org.apache.catalina.core.StandardService.stopInternal Stopping service Catalina<br>16-Dec-2016 16:35:36.099 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [idp] appears to have started a thread named [AsyncAppender-Worker-ASYNC_PROCESS] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:<br> sun.misc.Unsafe.park(Native Method)<br> java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)<br> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)<br> java.util.concurrent.ArrayBlockingQueue.take(ArrayBlockingQueue.java:403)<br> ch.qos.logback.core.AsyncAppenderBase$Worker.run(AsyncAppenderBase.java:250)<br>16-Dec-2016 16:35:36.133 INFO [main] org.apache.coyote.AbstractProtocol.stop Stopping ProtocolHandler ["ajp-nio-127.0.0.1-8009"]<br>16-Dec-2016 16:35:36.136 INFO [main] org.apache.coyote.AbstractProtocol.destroy Destroying ProtocolHandler ["ajp-nio-127.0.0.1-8009"]<br><br><br></div>Versions:<span style="color:rgb(112,112,112);font-family:arial,sans-serif;font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(224,240,255);display:inline;float:none"><br><br>Tomcat: 8.5.8<br>Java: JDK 8u112<br>IdP: 3.3.0<br>OS: RHEL7<br></span></div>