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From "Timothy Bish (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMQ-2565) Consumer skips messages in a queue when invoked from another queue
Date Wed, 29 Jun 2011 21:28:28 GMT

    [ https://issues.apache.org/jira/browse/AMQ-2565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13057477#comment-13057477
] 

Timothy Bish commented on AMQ-2565:
-----------------------------------

The test fails because the JMSTemplate creates a new consumer on each call to receive, and
the fact that its inside a transaction when onMessage is called means that the consumers aren't
closed until the transaction is committed.  Since the consumers have their prefetch left at
default settings the second message is sitting in the prefetch buffer of the consumer created
by the first call to JMSTemplate receive.  Once the onMessage completes and the transaction
is committed the second message is available for dispatch once again.  You can observe this
by adding another call to the JMSTemplate send to Queue A, then you test condition will be
met and the test will pass.

> Consumer skips messages in a queue when invoked from another queue
> ------------------------------------------------------------------
>
>                 Key: AMQ-2565
>                 URL: https://issues.apache.org/jira/browse/AMQ-2565
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Broker
>    Affects Versions: 5.3.0
>         Environment: ActiveMQ 5.4-SNAPSHOT, Spring 2.5.6, JDK 1.6
>            Reporter: Dragisa Krsmanovic
>             Fix For: 5.6.0
>
>         Attachments: TransactedConcurrentConsumerTest.patch
>
>
> MessageListener that is triggered by a message in queue A reads messages from queue B
using JmsTemplate. Although there are more messages in queue B, it can only read the first
one. The bug was introduced in AMQ 5.3
> This is related to [CAMEL-2305|https://issues.apache.org/activemq/browse/CAMEL-2305].

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