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From "Knut Anders Hatlen (JIRA)" <derby-...@db.apache.org>
Subject [jira] Created: (DERBY-1817) Race condition in network server's thread pool
Date Wed, 06 Sep 2006 15:48:22 GMT
Race condition in network server's thread pool
----------------------------------------------

                 Key: DERBY-1817
                 URL: http://issues.apache.org/jira/browse/DERBY-1817
             Project: Derby
          Issue Type: Bug
          Components: Network Server
    Affects Versions: 10.2.1.0
            Reporter: Knut Anders Hatlen


If there is a free DRDAConnThread when a client connects to the network server, the session
is put into a queue from which one of the free DRDAConnThreads can pick it up. However, if
another client connects after the session was put into the queue, but before the DRDAConnThread
has picked it up, one might end up with more sessions in the queue than there are free threads.
This can lead to hangs like the ones that we currently see in many of Ole's tests (for instance
checkDataSource - http://www.multinet.no/~solberg/public/Apache/TinderBox_Derby/testlog/SunOS-5.10_i86pc-i386/440518-derbyall_diff.txt).

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