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From "Alexander Fisher (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQ-2414) JDBC datastore locking does not work when using MYSQL cluster
Date Fri, 25 Sep 2009 13:50:51 GMT
JDBC datastore locking does not work when using MYSQL cluster
-------------------------------------------------------------

                 Key: AMQ-2414
                 URL: https://issues.apache.org/activemq/browse/AMQ-2414
             Project: ActiveMQ
          Issue Type: Bug
          Components: Message Store
    Affects Versions: 5.3.0
            Reporter: Alexander Fisher


JDBC Master/Slave doesn't work properly for mysql cluster when the master and slave brokers
are using different MYSQL frontends as would be required in a HA setup.  The code currently
locks the database using a TABLE lock which are not cluster wide in mysql.
http://dev.mysql.com/doc/refman/5.1/en/mysql-cluster-limitations-multiple-nodes.html

The default code path uses a SELECT FOR UPDATE to get a lock.  This is supported in mysql
cluster.
The attached patch works for me.

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