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From "Gary Tully (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQ-2540) Duplicate suppression lack of recovery with JDBCStore can result in "hung" queue afer failover of outstanding send or transaction.
Date Fri, 18 Dec 2009 13:01:52 GMT
Duplicate suppression lack of recovery with JDBCStore can result in "hung" queue afer failover
of outstanding send or transaction.
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                 Key: AMQ-2540
                 URL: https://issues.apache.org/activemq/browse/AMQ-2540
             Project: ActiveMQ
          Issue Type: Bug
          Components: Message Store
    Affects Versions: 5.3.0
            Reporter: Gary Tully
            Assignee: Gary Tully
             Fix For: 5.4.0


during failover, when a commit or send reply is lost, such that the broker has completed the
operation but the client does not see the reply, the operation and context will be replayed.
This results in duplicate messages that should be suppressed. The AMQ reference store does
this correctly but the audit check in the JDBCMessageStore does not do recovery so it is unaware
of past events. 
Adding some replay capability to the audit resolves this as it can then suppress duplicated.
The audit depth should limit the replay depth.
{code}<jdbcPersistenceAdapter dataSource="#...." maxProducersToAudit="10000"/>{code}

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