I have a Spring web application running on Tomcat.
When trying to shutdown Tomcat with the shutdown.sh script, the java process doesn't end because it has a Thread that's still running. The catalina.log contains
Jul 22, 2013 2:07:50 PM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [/myapp] appears to have started a thread named [com.google.common.base.internal.Finalizer] but has failed to stop it. This is very likely to create a memory leak.
Apparently BoneCP has some Guava integration that causes this thread to block. Is there a clean or intended way to kill this thread?
There's an open issue on Guava for this problem - the issue itself is pretty old but if you check the latest comments you'll see some suggestions from other BoneCP users to resolve this issue