[jboss-jira] [JBoss JIRA] Resolved: (JBCACHE-1256) PessimisticLockInterceptor does not clean up all temporary nodes created during a removeNode() call

Fri Jan 4 14:00:08 EST 2008

     [ http://jira.jboss.com/jira/browse/JBCACHE-1256?page=all ]

Manik Surtani resolved JBCACHE-1256.
------------------------------------

    Resolution: Done

> PessimisticLockInterceptor does not clean up all temporary nodes created during a removeNode() call
> ---------------------------------------------------------------------------------------------------
>
>                 Key: JBCACHE-1256
>                 URL: http://jira.jboss.com/jira/browse/JBCACHE-1256
>             Project: JBoss Cache
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>    Affects Versions: 2.1.0.CR2
>            Reporter: Manik Surtani
>         Assigned To: Manik Surtani
>            Priority: Critical
>             Fix For: 2.1.0.CR3
>
>
> This was probably introduced with JBCACHE-1165 - which involved creating nodes that do not exist when removeNode() is called, so that appropriate locks can be obtained to prevent concurrent remove and add race conditions.
> The issue is that while the temporary node created is deleted as a part of the removeNode() call, temporary nodes created in the process (structural nodes) are not cleaned up.
> testPhantomStructuralNodesOnRemove() and testPhantomStructuralNodesOnRemoveTransactional() in CacheAPITest (and CacheAPIOptimisticTest) depict this behaviour.
> One side effect is incorrect data gravitation cleanup, as depicted by gravitation cleanup calls resulting in data owner containing a backup region for itself.
> See unit test for this gravitation side-effect:
> http://viewvc.jboss.org/cgi-bin/viewvc.cgi/jbosscache/core/trunk/src/test/java/org/jboss/cache/buddyreplication/GravitationCleanupTest.java?view=markup

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