Hi, We are getting NoClassDefFoundErrors during Tomcat graceful shutdown process (i.e. using "catalina.sh stop" command). We are using Tomcat with version 6.0.44. Note that this error can not be reproduced consistently. I found following article on the stackoverflow.com which suggests class loader related problems during execution of JVM shutdown hook. But in this case, the error is raised during the execution of ServletFilter::destroy(...) method. So I am not sure if article is relevant.
http://stackoverflow.com/questions/19388201/could-not-load-org-apache-hadoop-util-shutdownhookmanager-when-shutdown-tomcat-s Could you please provide any insight? java.lang.NoClassDefFoundError: com/google/common/cache/RemovalCause at com.google.common.cache.LocalCache$Segment.remove(LocalCache.java:3147) at com.google.common.cache.LocalCache.remove(LocalCache.java:4236) at org.apache.curator.framework.imps.NamespaceWatcherMap.remove(NamespaceWatcherMap.java:71) at org.apache.curator.framework.imps.CuratorFrameworkImpl.clearWatcherReferences(CuratorFrameworkImpl.java:189) at org.apache.curator.framework.recipes.cache.PathChildrenCache.close(PathChildrenCache.java:376) at org.apache.hadoop.security.token.delegation.ZKDelegationTokenSecretManager.stopThreads(ZKDelegationTokenSecretManager.java:456) at org.apache.hadoop.security.token.delegation.web.DelegationTokenManager.destroy(DelegationTokenManager.java:152) at org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticationHandler.destroy(DelegationTokenAuthenticationHandler.java:153) at org.apache.hadoop.security.authentication.server.AuthenticationFilter.destroy(AuthenticationFilter.java:401) at org.apache.solr.servlet.SolrHadoopAuthenticationFilter.destroy(SolrHadoopAuthenticationFilter.java:177) at org.apache.catalina.core.ApplicationFilterConfig.release(ApplicationFilterConfig.java:360) at org.apache.catalina.core.StandardContext.filterStop(StandardContext.java:4111) at org.apache.catalina.core.StandardContext.stop(StandardContext.java:4880) at org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1279) at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1385) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:307) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142) at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1392) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1656) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1665) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1645) at java.lang.Thread.run(Thread.java:745) Caused by: java.lang.ClassNotFoundException: com.google.common.cache.RemovalCause at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
