How to treat Deadlock Tomcat in the openJarFile method?

Question

css

Sometimes tomcat (Tomcat 8.5.23 on Ununtu server, java8) is in deadlock and nothing can be done about it. We managed to get a thread dump, which shows the following
Stack trace of blocked threads:

org.apache.catalina.webresources.AbstractSingleArchiveResourceSet.getArchiveEntries(AbstractSingleArchiveResourceSet.java:63)
org.apache.catalina.webresources.AbstractArchiveResourceSet.getResource(AbstractArchiveResourceSet.java:256)
org.apache.catalina.webresources.StandardRoot.getResourceInternal(StandardRoot.java:281)
org.apache.catalina.webresources.CachedResource.validateResource(CachedResource.java:95)
org.apache.catalina.webresources.Cache.getResource(Cache.java:69)
org.apache.catalina.webresources.StandardRoot.getResource(StandardRoot.java:216)
org.apache.catalina.webresources.StandardRoot.getClassLoaderResource(StandardRoot.java:225)
org.apache.catalina.loader.WebappClassLoaderBase.getResourceAsStream(WebappClassLoaderBase.java:1067)
org.apache.xerces.parsers.SecuritySupport$6.run(Unknown Source)
java.security.AccessController.doPrivileged(Native Method)
org.apache.xerces.parsers.SecuritySupport.getResourceAsStream(Unknown Source)
org.apache.xerces.parsers.ObjectFactory.findJarServiceProvider(Unknown Source)
org.apache.xerces.parsers.ObjectFactory.createObject(Unknown Source)
org.apache.xerces.parsers.ObjectFactory.createObject(Unknown Source)
org.apache.xerces.parsers.DOMParser.(Unknown Source)
org.apache.xerces.parsers.DOMParser.(Unknown Source)
org.apache.xerces.jaxp.DocumentBuilderImpl.(Unknown Source)
org.apache.xerces.jaxp.DocumentBuilderFactoryImpl.newDocumentBuilder(Unknown Source)

Stack trace of the problematic thread that blocked others:

java.util.zip.ZipFile.open(Native Method)
java.util.zip.ZipFile.(ZipFile.java:219)
java.util.zip.ZipFile.(ZipFile.java:149)
java.util.jar.JarFile.(JarFile.java:166)
java.util.jar.JarFile.(JarFile.java:103)
org.apache.catalina.webresources.AbstractArchiveResourceSet.openJarFile(AbstractArchiveResourceSet.java:308)
org.apache.catalina.webresources.AbstractSingleArchiveResourceSet.getArchiveEntry(AbstractSingleArchiveResourceSet.java:93)
org.apache.catalina.webresources.AbstractArchiveResourceSet.getResource(AbstractArchiveResourceSet.java:260)
org.apache.catalina.webresources.StandardRoot.getResourceInternal(StandardRoot.java:281)
org.apache.catalina.webresources.CachedResource.validateResource(CachedResource.java:95)
org.apache.catalina.webresources.Cache.getResource(Cache.java:69)
org.apache.catalina.webresources.StandardRoot.getResource(StandardRoot.java:216)
org.apache.catalina.webresources.StandardRoot.getClassLoaderResource(StandardRoot.java:225)
org.apache.catalina.loader.WebappClassLoaderBase.getResourceAsStream(WebappClassLoaderBase.java:1067)
org.apache.xerces.parsers.SecuritySupport$6.run(Unknown Source)
java.security.AccessController.doPrivileged(Native Method)
org.apache.xerces.parsers.SecuritySupport.getResourceAsStream(Unknown Source)
org.apache.xerces.parsers.ObjectFactory.findJarServiceProvider(Unknown Source)
org.apache.xerces.parsers.ObjectFactory.createObject(Unknown Source)
org.apache.xerces.parsers.ObjectFactory.createObject(Unknown Source)
org.apache.xerces.parsers.DOMParser.(Unknown Source)
org.apache.xerces.parsers.DOMParser.(Unknown Source)
org.apache.xerces.jaxp.DocumentBuilderImpl.(Unknown Source)
org.apache.xerces.jaxp.DocumentBuilderFactoryImpl.newDocumentBuilder(Unknown Source)

At the same time, the number of open files in the OS is far from the maximum.
Has anyone experienced something similar?

Answer 1

Take Owl Carousel and finish with styles, it can be done.