[jboss-jira] [JBoss JIRA] (JBJCA-1236) Race condition in SemaphoreConcurrentLinkedQueueManagedConnectionPool

[John O'Hara (JIRA)]

John O'Hara created JBJCA-1236:
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             Summary: Race condition in SemaphoreConcurrentLinkedQueueManagedConnectionPool
                 Key: JBJCA-1236
                 URL: https://issues.jboss.org/browse/JBJCA-1236
             Project: IronJacamar
          Issue Type: Bug
          Components: Core
    Affects Versions: 1.2.0.Final
            Reporter: John O'Hara
            Assignee: Jesper Pedersen


A race condition in the ConnectionListenerWrapper and incorrect logic when returning the ConnectionListener object to the ConcurrentLinkedQueue means that stale field values are sometimes seen for ConnectionListenerWrapper.hasPermit().

Under heavy contention, a stale value in hasPermit() means permits.release() is not called and the semaphores available reduce over time. 

The mcp effectively shrinks over time.



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