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From "Timo Pick (JIRA)" <j...@apache.org>
Subject [jira] Created: (JCR-2232) shutdown deadlock
Date Wed, 29 Jul 2009 09:56:15 GMT
shutdown deadlock

                 Key: JCR-2232
                 URL: https://issues.apache.org/jira/browse/JCR-2232
             Project: Jackrabbit Content Repository
          Issue Type: Bug
          Components: clustering, jackrabbit-core
    Affects Versions: 1.5.6
         Environment: JDK 1.6.0_13, JBoss, Liferay 5.2.2, Oracle 10g 
            Reporter: Timo Pick

Enviroment: I'm using Liferay in a clustered environment with two JBoss nodes. Liferay uses
Jackrabbit to save documents and attachments. Jackrabbit uses an Oracle10g database as filesystem,
repository and workspace. (see repository.xml)

Problem: shutting down jboss leads to a deadlock in the RepositoryImpl.shutdown() method as
it tries to acquire a ReadWriteLock. RepositoryImpl calls shutdown() which tells all the Sessions
to logout(). The callback method TransientRepository.loggedOut() is called. This method calls
RepositoryImpl.shutdown() again (!!!). This is where the deadlock occurs. The lock can not
be acquired again as it already is acquired by the first call. I have appended the java stacktrace
(see jboss-does-not-stop.txt)

Possible Solution: prevent TransientSession.loggedOut() from calling RepositoryImpl.shutdown()

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