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From "Timothy Bish (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMQ-3961) Durable subscriber only receives part of the persisted messages on re-connect
Date Sat, 04 Aug 2012 00:03:02 GMT

    [ https://issues.apache.org/jira/browse/AMQ-3961?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13428480#comment-13428480
] 

Timothy Bish commented on AMQ-3961:
-----------------------------------

A good course of action here would be to create a JUnit test case that shows the issue and
a patch that resolves it, this will ensure it stays fixed into the future. 
                
> Durable subscriber only receives part of the persisted messages on re-connect
> -----------------------------------------------------------------------------
>
>                 Key: AMQ-3961
>                 URL: https://issues.apache.org/jira/browse/AMQ-3961
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Connector
>    Affects Versions: 5.6.0
>         Environment: Default configuraton of ActiveMQ under Linux or Windows
>            Reporter: Andreas Mattes
>
> A durable subscriber is connected to ActiveMQ using the ConnectionConsumer protocol,
transacted sessions, and at most 1 message per session. While the subscriber is disconnected,
the publisher publishes e.g. 10 messages. When the subscriber re-connects, it only receives
2 messages of those. If it repeatedly disconnects and re-connects, it receives 2 messages
each time until all messages are received.
> Further investigation reveals that the problem lies in class org.apache.activemq.broker.region.PrefetchSubscription
which does not re-check for further pending messages to be dispatched when committed message
are removed from the list of dispatched but not yet acknowledged messages.

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