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From "Andrew Kennedy (JIRA)" <j...@apache.org>
Subject [jira] Created: (QPID-3008) QueueBrowserAutoAckTest#testFailoverWithQueueBrowser fails with the 0-10 Java client
Date Thu, 20 Jan 2011 00:53:43 GMT
QueueBrowserAutoAckTest#testFailoverWithQueueBrowser fails with the 0-10 Java client
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                 Key: QPID-3008
                 URL: https://issues.apache.org/jira/browse/QPID-3008
             Project: Qpid
          Issue Type: Bug
          Components: Java Client
    Affects Versions: 0.8
            Reporter: Andrew Kennedy
            Assignee: Andrew Kennedy


In the 0-10 Java client when a QueueBrowser returns an Enumeration, and it is being enumerated
over while the connection fails over, the consumer cannot tell that failover is ocurring and
sends messages with incorrect subscriber tag numbers to the broker. The BasicMessageConsumer_0_10
uses the shared BasicMessageConsumer#acquireReceiving(boolean) method which tries to call
AMQConnection#isFailingOver() and #blockUntilNotFailingOver() and receives incorrect results.
This is because AMQConnectionDelegate_0_10 does not start a FailoverHandler continuation and
therefore the AMQProtocolHandler#setFailoverLatch(CountdownLatch) and associated methods are
never called.

To correct this behaviour update the connection close method of the 0-10 delegate to create
the latch, attempt failover and then decrement and remove the latch on success.

QueueBrowserAutoAckTest#testFailoverWithQueueBrowser() is excluded from the cpp.noprefetch
profile.

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