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https://issues.apache.org/jira/browse/AMQ-8131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17276285#comment-17276285
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ASF subversion and git services commented on AMQ-8131:
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Commit 2f40261362bb830899f7f369a731b446f795a627 in activemq's branch 
refs/heads/master from gtully
[ https://gitbox.apache.org/repos/asf?p=activemq.git;h=2f40261 ]

AMQ-8131 - revert treating unmatched as real acks b/c individual acks are not 
tracked. make use of enableMessageExpirationOnActiveDurableSubs to ensure 
unmatched can eventually expire


> JDBC Store - durable topic with non matching selector can hold message till 
> unsubscribe in error
> ------------------------------------------------------------------------------------------------
>
>                 Key: AMQ-8131
>                 URL: https://issues.apache.org/jira/browse/AMQ-8131
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: JDBC, Message Store
>    Affects Versions: 5.16.0
>            Reporter: Gary Tully
>            Assignee: Gary Tully
>            Priority: Major
>             Fix For: 5.17.0
>
>
> Unmatched messages get an unmatched ack, however this ack is ignored by the 
> topic message store under the assumption that there will be some subsequent 
> ack that will more the cursor forward and allow cleanup to happen. However 
> this may never happen and messages can accumulate till that subscription is 
> removed.
> The jdbc topic message store needs to track the unmatched acks in the normal 
> way.



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