On 03/05/2011 15:22, Christopher Schultz wrote: > All, > > Moments ago in our development environment, our webapp suffered an OOME > after many re-reployments (we know we have an undeploy-related leak). > When attempting to bounce Tomcat, the shutdown failed and I took a > thread dump which included the one non-trivial thread shown below. > > I haven't looked at the code yet to see if there is some kind of loop > around this code, but top reported 100% CPU usage from this process so I > suspect something like that was happening. > > We are using TC 6.0.32 on Debian Lenny and Sun/Oracle 32-bit > 1.6.0_22-b04 Server VM. > > This is less of a "help" request as it is an observation of an > unfortunate situation: the OOME is clearly the real problem and has > nothing to do with Tomcat itself. Unfortunately, after the OOME, Tomcat > was unable to shut down gracefully and that could be a problem in and of > itself.
After an OOME there are no guarantees as to the state of the JVM. That Tomcat is unable to shut down cleanly in that case is not suprising. Mark > > Thanks, > -chris > > Stack trace hung during shutdown: > > "main" prio=10 tid=0x08059400 nid=0x7da1 runnable [0xb7276000] > java.lang.Thread.State: RUNNABLE > at java.lang.Class.getDeclaredFields0(Native Method) > at java.lang.Class.privateGetDeclaredFields(Class.java:2291) > at java.lang.Class.getDeclaredFields(Class.java:1743) > at > org.apache.catalina.loader.WebappClassLoader.clearReferencesStaticFinal(WebappClassLoader.java:2034) > at > org.apache.catalina.loader.WebappClassLoader.clearReferences(WebappClassLoader.java:1929) > at > org.apache.catalina.loader.WebappClassLoader.stop(WebappClassLoader.java:1833) > at > org.apache.catalina.loader.WebappLoader.stop(WebappLoader.java:740) > at > org.apache.catalina.core.StandardContext.stop(StandardContext.java:4913) > - locked <0xb01a3e68> (a org.apache.catalina.core.StandardContext) > at > org.apache.catalina.core.ContainerBase.removeChild(ContainerBase.java:932) > at > org.apache.catalina.startup.HostConfig.undeployApps(HostConfig.java:1357) > at org.apache.catalina.startup.HostConfig.stop(HostConfig.java:1328) > at > org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:326) > at > org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142) > at > org.apache.catalina.core.ContainerBase.stop(ContainerBase.java:1094) > - locked <0xb01a3cf0> (a org.apache.catalina.core.StandardHost) > at > org.apache.catalina.core.ContainerBase.stop(ContainerBase.java:1106) > - locked <0xb0220538> (a org.apache.catalina.core.StandardEngine) > at > org.apache.catalina.core.StandardEngine.stop(StandardEngine.java:468) > at > org.apache.catalina.core.StandardService.stop(StandardService.java:604) > - locked <0xb0220538> (a org.apache.catalina.core.StandardEngine) > at > org.apache.catalina.core.StandardServer.stop(StandardServer.java:788) > at org.apache.catalina.startup.Catalina.stop(Catalina.java:662) > at org.apache.catalina.startup.Catalina.start(Catalina.java:629) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:597) > at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289) > at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414) --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
