[jbosscache-issues] [JBoss JIRA] (JBCACHE-1620) Race condition when automatically creating parent nodes during locking fails to get lock

[Dennis Reed (JIRA)]

Dennis Reed created JBCACHE-1620:
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             Summary: Race condition when automatically creating parent nodes during locking fails to get lock
                 Key: JBCACHE-1620
                 URL: https://issues.jboss.org/browse/JBCACHE-1620
             Project: JBoss Cache
          Issue Type: Bug
      Security Level: Public (Everyone can see)
          Components: Locking
    Affects Versions: 3.2.9.GA
            Reporter: Dennis Reed
            Assignee: Dennis Reed


Bug/race condition in PessimisticUnversionedNode#addChildAndAcquireLock.
If two threads try to create the same node at the exact same time, one thread creates it and gets a write lock.  
The other thread does not create a node, but returns the previously created node and does not lock it.

The only caller PessimisticNodeBasedLockManager assumes the node was both created and locked after the call returns.


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