Re: Shutdown Hangs

Fri, 07 Mar 2008 08:36:35 -0800 

Hi Marcel,
Thanx for your response. It's not easy to get a good threaddump, because when you shutdown tomcat as a service this option is not available, but i used the jdb running the tomcat in debugmode. 

I debugged it many times now, and so far thisis my explanition:

 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)

 [3] 
EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$WriterLock.acquire 
(null)
 [4] org.apache.jackrabbit.core.RepositoryImpl.shutdown 
(RepositoryImpl.java:939)
 [5] org.apache.jackrabbit.core.TransientRepository.stopRepository 
(TransientRepository.java:275)
 [6] org.apache.jackrabbit.core.TransientRepository.loggedOut 
(TransientRepository.java:427)
 [7] org.apache.jackrabbit.core.SessionImpl.notifyLoggedOut 
(SessionImpl.java:573)

 [8] org.apache.jackrabbit.core.SessionImpl.logout (SessionImpl.java:1.246)

 [9] org.apache.jackrabbit.core.XASessionImpl.logout 
(XASessionImpl.java:403)
 [10] org.apache.jackrabbit.core.RepositoryImpl.doShutdown 
(RepositoryImpl.java:981)
 [11] org.apache.jackrabbit.core.RepositoryImpl.shutdown 
(RepositoryImpl.java:948)

 ...



When shutting down Spring  calls the "shutdown()"-Method, which aquires 
the lock and then closes all sessions. But when the last session will be 
closed, it will call the shutdown-method again [5], but this time he is 
waiting for the lock.


Any Idea why this happens?

thanx

simon


This is my Threaddump:

> http-80-1:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)

 [3] org.apache.tomcat.util.net.AprEndpoint$Worker.await 
(AprEndpoint.java:1.256)
 [4] org.apache.tomcat.util.net.AprEndpoint$Worker.run 
(AprEndpoint.java:1.281)

 [5] java.lang.Thread.run (null)
ajp-8009-1:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)

 [3] org.apache.tomcat.util.net.AprEndpoint$Worker.await 
(AprEndpoint.java:1.256)
 [4] org.apache.tomcat.util.net.AprEndpoint$Worker.run 
(AprEndpoint.java:1.281)

 [5] java.lang.Thread.run (null)
ajp-8009-Poller-7:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)

 [3] org.apache.tomcat.util.net.AprEndpoint$Poller.run 
(AprEndpoint.java:1.126)

 [4] java.lang.Thread.run (null)
ajp-8009-Poller-6:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)

 [3] org.apache.tomcat.util.net.AprEndpoint$Poller.run 
(AprEndpoint.java:1.126)

 [4] java.lang.Thread.run (null)
ajp-8009-Poller-5:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)

 [3] org.apache.tomcat.util.net.AprEndpoint$Poller.run 
(AprEndpoint.java:1.126)

 [4] java.lang.Thread.run (null)
ajp-8009-Poller-4:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)

 [3] org.apache.tomcat.util.net.AprEndpoint$Poller.run 
(AprEndpoint.java:1.126)

 [4] java.lang.Thread.run (null)
ajp-8009-Poller-3:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)

 [3] org.apache.tomcat.util.net.AprEndpoint$Poller.run 
(AprEndpoint.java:1.126)

 [4] java.lang.Thread.run (null)
ajp-8009-Poller-2:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)

 [3] org.apache.tomcat.util.net.AprEndpoint$Poller.run 
(AprEndpoint.java:1.126)

 [4] java.lang.Thread.run (null)
ajp-8009-Poller-1:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)

 [3] org.apache.tomcat.util.net.AprEndpoint$Poller.run 
(AprEndpoint.java:1.126)

 [4] java.lang.Thread.run (null)
ajp-8009-Poller-0:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)

 [3] org.apache.tomcat.util.net.AprEndpoint$Poller.run 
(AprEndpoint.java:1.126)

 [4] java.lang.Thread.run (null)
ajp-8009-Acceptor-0:
 [1] java.lang.Thread.sleep (native method)

 [2] org.apache.tomcat.util.net.AprEndpoint$Acceptor.run 
(AprEndpoint.java:994)

 [3] java.lang.Thread.run (null)
http-80-Sendfile-0:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)

 [3] org.apache.tomcat.util.net.AprEndpoint$Sendfile.run 
(AprEndpoint.java:1.487)

 [4] java.lang.Thread.run (null)
http-80-Poller-7:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)

 [3] org.apache.tomcat.util.net.AprEndpoint$Poller.run 
(AprEndpoint.java:1.126)

 [4] java.lang.Thread.run (null)
http-80-Poller-6:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)

 [3] org.apache.tomcat.util.net.AprEndpoint$Poller.run 
(AprEndpoint.java:1.126)

 [4] java.lang.Thread.run (null)
http-80-Poller-5:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)

 [3] org.apache.tomcat.util.net.AprEndpoint$Poller.run 
(AprEndpoint.java:1.126)

 [4] java.lang.Thread.run (null)
http-80-Poller-4:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)

 [3] org.apache.tomcat.util.net.AprEndpoint$Poller.run 
(AprEndpoint.java:1.126)

 [4] java.lang.Thread.run (null)
http-80-Poller-3:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)

 [3] org.apache.tomcat.util.net.AprEndpoint$Poller.run 
(AprEndpoint.java:1.126)

 [4] java.lang.Thread.run (null)
http-80-Poller-2:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)

 [3] org.apache.tomcat.util.net.AprEndpoint$Poller.run 
(AprEndpoint.java:1.126)

 [4] java.lang.Thread.run (null)
http-80-Poller-1:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)

 [3] org.apache.tomcat.util.net.AprEndpoint$Poller.run 
(AprEndpoint.java:1.126)

 [4] java.lang.Thread.run (null)
http-80-Poller-0:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)

 [3] org.apache.tomcat.util.net.AprEndpoint$Poller.run 
(AprEndpoint.java:1.126)

 [4] java.lang.Thread.run (null)
http-80-Acceptor-0:
 [1] java.lang.Thread.sleep (native method)

 [2] org.apache.tomcat.util.net.AprEndpoint$Acceptor.run 
(AprEndpoint.java:994)

 [3] java.lang.Thread.run (null)
IndexMerger:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)

 [3] org.apache.commons.collections.buffer.BlockingBuffer.remove 
(BlockingBuffer.java:107)
 [4] org.apache.jackrabbit.core.query.lucene.IndexMerger.run 
(IndexMerger.java:263)

Timer-1:
 [1] java.lang.Object.wait (native method)
 [2] java.util.TimerThread.mainLoop (null)
 [3] java.util.TimerThread.run (null)
IndexMerger:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)

 [3] org.apache.commons.collections.buffer.BlockingBuffer.remove 
(BlockingBuffer.java:107)
 [4] org.apache.jackrabbit.core.query.lucene.IndexMerger.run 
(IndexMerger.java:263)

ObservationManager:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)

 [3] org.apache.commons.collections.buffer.BlockingBuffer.remove 
(BlockingBuffer.java:107)
 [4] org.apache.jackrabbit.core.observation.ObservationDispatcher.run 
(ObservationDispatcher.java:138)

 [5] java.lang.Thread.run (null)
Thread-4:
 [1] java.lang.Thread.sleep (native method)
 [2] org.x7.core.content.dao.DocLogDAO.run (DocLogDAO.java:191)
 [3] java.lang.Thread.run (null)
Store org.hibernate.cache.StandardQueryCache Spool Thread:
 [1] java.lang.Thread.sleep (native method)

 [2] net.sf.ehcache.store.DiskStore.spoolAndExpiryThreadMain 
(DiskStore.java:573)

 [3] net.sf.ehcache.store.DiskStore.access$800 (DiskStore.java:65)

 [4] net.sf.ehcache.store.DiskStore$SpoolAndExpiryThread.run 
(DiskStore.java:1.057)

Store org.hibernate.cache.UpdateTimestampsCache Spool Thread:
 [1] java.lang.Thread.sleep (native method)

 [2] net.sf.ehcache.store.DiskStore.spoolAndExpiryThreadMain 
(DiskStore.java:573)

 [3] net.sf.ehcache.store.DiskStore.access$800 (DiskStore.java:65)

 [4] net.sf.ehcache.store.DiskStore$SpoolAndExpiryThread.run 
(DiskStore.java:1.057)

Store org.x7.core.content.base.AbstractGUIDObject Spool Thread:
 [1] java.lang.Thread.sleep (native method)

 [2] net.sf.ehcache.store.DiskStore.spoolAndExpiryThreadMain 
(DiskStore.java:573)

 [3] net.sf.ehcache.store.DiskStore.access$800 (DiskStore.java:65)

 [4] net.sf.ehcache.store.DiskStore$SpoolAndExpiryThread.run 
(DiskStore.java:1.057)

Timer-0:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)
 [3] java.util.TimerThread.mainLoop (null)
 [4] java.util.TimerThread.run (null)
Thread-1:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)

 [3] 
EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$WriterLock.acquire 
(null)
 [4] org.apache.jackrabbit.core.RepositoryImpl.shutdown 
(RepositoryImpl.java:939)
 [5] org.apache.jackrabbit.core.TransientRepository.stopRepository 
(TransientRepository.java:275)
 [6] org.apache.jackrabbit.core.TransientRepository.loggedOut 
(TransientRepository.java:427)
 [7] org.apache.jackrabbit.core.SessionImpl.notifyLoggedOut 
(SessionImpl.java:573)

 [8] org.apache.jackrabbit.core.SessionImpl.logout (SessionImpl.java:1.246)

 [9] org.apache.jackrabbit.core.XASessionImpl.logout 
(XASessionImpl.java:403)
 [10] org.apache.jackrabbit.core.RepositoryImpl.doShutdown 
(RepositoryImpl.java:981)
 [11] org.apache.jackrabbit.core.RepositoryImpl.shutdown 
(RepositoryImpl.java:948)
 [12] 
org.springmodules.jcr.jackrabbit.TransientRepositoryFactoryBean.destroy 
(TransientRepositoryFactoryBean.java:67)
 [13] 
org.springframework.beans.factory.support.DisposableBeanAdapter.destroy 
(DisposableBeanAdapter.java:154)
 [14] 
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroyBean 
(DefaultSingletonBeanRegistry.java:397)
 [15] 
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingleton 
(DefaultSingletonBeanRegistry.java:375)
 [16] 
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingletons 
(DefaultSingletonBeanRegistry.java:348)
 [17] 
org.springframework.context.support.AbstractApplicationContext.destroyBeans 
(AbstractApplicationContext.java:856)
 [18] 
org.springframework.context.support.AbstractApplicationContext.doClose 
(AbstractApplicationContext.java:834)
 [19] 
org.springframework.context.support.AbstractApplicationContext.close 
(AbstractApplicationContext.java:801)
 [20] 
org.springframework.web.context.ContextLoader.closeWebApplicationContext 
(ContextLoader.java:357)
 [21] 
org.springframework.web.context.ContextLoaderListener.contextDestroyed 
(ContextLoaderListener.java:70)
 [22] org.apache.catalina.core.StandardContext.listenerStop 
(StandardContext.java:3.805)
 [23] org.apache.catalina.core.StandardContext.stop 
(StandardContext.java:4.364)
 [24] org.apache.catalina.core.ContainerBase.removeChild 
(ContainerBase.java:893)
 [25] org.apache.catalina.startup.HostConfig.undeployApps 
(HostConfig.java:1.180)

 [26] org.apache.catalina.startup.HostConfig.stop (HostConfig.java:1.151)

 [27] org.apache.catalina.startup.HostConfig.lifecycleEvent 
(HostConfig.java:313)
 [28] org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent 
(LifecycleSupport.java:120)
 [29] org.apache.catalina.core.ContainerBase.stop 
(ContainerBase.java:1.055)
 [30] org.apache.catalina.core.ContainerBase.stop 
(ContainerBase.java:1.067)
 [31] org.apache.catalina.core.StandardEngine.stop 
(StandardEngine.java:448)
 [32] org.apache.catalina.core.StandardService.stop 
(StandardService.java:510)
 [33] org.apache.catalina.core.StandardServer.stop 
(StandardServer.java:734)

 [34] org.apache.catalina.startup.Catalina.stop (Catalina.java:602)
 [35] org.apache.catalina.startup.Catalina.start (Catalina.java:577)
 [36] sun.reflect.NativeMethodAccessorImpl.invoke0 (native method)
 [37] sun.reflect.NativeMethodAccessorImpl.invoke (null)
 [38] sun.reflect.DelegatingMethodAccessorImpl.invoke (null)
 [39] java.lang.reflect.Method.invoke (null)
 [40] org.apache.catalina.startup.Bootstrap.start (Bootstrap.java:295)
 [41] org.apache.catalina.startup.Bootstrap.main (Bootstrap.java:433)
Attach Listener:
Signal Dispatcher:
Finalizer:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.ref.ReferenceQueue.remove (null)
 [3] java.lang.ref.ReferenceQueue.remove (null)
 [4] java.lang.ref.Finalizer$FinalizerThread.run (null)
Reference Handler:
 [1] java.lang.Object.wait (native method)
 [2] java.lang.Object.wait (Object.java:485)
 [3] java.lang.ref.Reference$ReferenceHandler.run (null)
main:



Marcel Reutegger schrieb:

Hi Simon,


can you please post the complete thread dump, which includes all other 
threads?


thanks

regards
 marcel



Simon Jentzsch wrote:

Hi,


I'm using jackrabbit together with spring and the 
org.springmodules.jcr.support.OpenSessionInViewFilter.  It works 
great and Spring takes care of all the starting and shutdown-cleanup, 
but whenever I shutdown my Tomcat the Repository hangs on this line:


shutdownLock.writeLock().acquire();    (RepositoryImpl:939)


It seemes to me, that the WriterPreferenceReadWriteLock is waiting 
for all LockWriters to finish, but he is waiting forever.

I don't know who should hold another Lock on it.


I just made an update from 1.3 to 1.4 but the shutdown did not get 
better.


Does anyone have a Idea?

Here my spring-config:


<!--  JCR -->

 <bean id="jcrRepository" 
class="org.springmodules.jcr.jackrabbit.RepositoryFactoryBean">

   <!-- normal factory beans params -->

   <property name="configuration" 
value="classpath:/org/x7/core/model/repository.xml"/>

   <property name="homeDir" value="file:."/>
 </bean>


<!-- org.springmodules.jcr.JcrSessionFactory -->


  <bean id="jcrSessionFactory" 
class="org.springmodules.jcr.jackrabbit.JackrabbitSessionFactory">

   <property name="repository" ref="jcrRepository"/>
   <property name="credentials">
      <bean class="javax.jcr.SimpleCredentials">
         <constructor-arg index="0" value="bogus"/>
         <constructor-arg index="1">
            <bean factory-bean="password" factory-method="toCharArray"/>
         </constructor-arg>
      </bean>
    </property>
    <property name="eventListeners">
      <list>
        <bean class="org.springmodules.jcr.EventListenerDefinition">
          <property name="listener" ref="jcrDAO"/>
        </bean>
      </list>
   </property>
  </bean>
     <!-- create the password to return it as a char[] -->
  <bean id="password" class="org.x7.core.util.CharArrayCreator">
    <constructor-arg index="0" value="pass"/>
  </bean>



  <bean id="jcrDAO" class="org.x7.core.jcr.JcrDAO" >
    <property name="sessionFactory" ref="jcrSessionFactory"/>
    <property name="template">
       <bean id="jcrTemplate" class="org.springmodules.jcr.JcrTemplate">
        <property name="sessionFactory" ref="jcrSessionFactory"/>
        <property name="allowCreate" value="true"/>
      </bean>
    </property>
    <property name="transactionMgr">

      <bean 
class="org.springmodules.jcr.jackrabbit.LocalTransactionManager">

        <property name="sessionFactory" ref="jcrSessionFactory"/>
      </bean>
    </property>
  </bean>

 



Thanx

Regards,

Simon




           
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