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From "Giambattista Bloisi (JIRA)" <j...@apache.org>
Subject [jira] Created: (POOL-147) Thread stuck in GenericObjectPool borrowObject()
Date Thu, 02 Jul 2009 12:11:47 GMT
Thread stuck in GenericObjectPool borrowObject()
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                 Key: POOL-147
                 URL: https://issues.apache.org/jira/browse/POOL-147
             Project: Commons Pool
          Issue Type: Bug
    Affects Versions: 1.5.1
            Reporter: Giambattista Bloisi
            Priority: Minor


In my application I found a thread stuck at GenericObjectPool.borrowObject(GenericObjectPool.java:1099)
even though resources were availbale (in my case connections for DBCP).
After an analysis of the code I think I spotted what could have caused this behavior.  GenericObjectPool.java:1099
line corresponds to an indefinite wait to a "latch" object. This wait should be awaken when
new resources are made available to the pool. The problem is likely that borrowObject enters
in wait without performing "latch.getPair()" check in a critical section.


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