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From "Gary Tully (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMQ-4645) The lease-database-locker does not work properly slave broker ssytem clock is behind Database server
Date Fri, 19 Jul 2013 19:46:51 GMT
Gary Tully created AMQ-4645:
-------------------------------

             Summary: The lease-database-locker does not work properly slave broker ssytem
clock is behind Database server
                 Key: AMQ-4645
                 URL: https://issues.apache.org/jira/browse/AMQ-4645
             Project: ActiveMQ
          Issue Type: Bug
          Components: Message Store
    Affects Versions: 5.8.0
         Environment: jdbc master slave
            Reporter: Gary Tully
            Assignee: Gary Tully
             Fix For: 5.9.0


The lease locker can adjust the lease duration based on the DB current time but this only
works if the broker is ahead of the Db.
If the broker is behind, it will always obtain a lease due to incorrect adjustment.
If the clocks are in sync there is no issue.{code}
<persistenceAdapter>
        <jdbcPersistenceAdapter dataSource="#oracle-ds" lockKeepAlivePeriod="5000">
            <locker>
                <lease-database-locker lockAcquireSleepInterval="10000"/>
            </locker>
        </jdbcPersistenceAdapter>
    </persistenceAdapter>{code}

The problem is that the negative diff is being treated as a positive diff.

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