[jira] [Commented] (AMQ-6824) PrefetchExtension growth with transacted consumers

["ASF subversion and git services (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/AMQ-6824?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16497886#comment-16497886 ] 

ASF subversion and git services commented on AMQ-6824:
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Commit 63b71affbc22f2186ec6b02baeed34a77cbeb27b in activemq's branch refs/heads/master from [~gtully]
[ https://git-wip-us.apache.org/repos/asf?p=activemq.git;h=63b71af ]

AMQ-6824 - harden test


> PrefetchExtension growth with transacted consumers
> --------------------------------------------------
>
>                 Key: AMQ-6824
>                 URL: https://issues.apache.org/jira/browse/AMQ-6824
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Broker
>    Affects Versions: 5.15.0
>            Reporter: Gary Tully
>            Assignee: Gary Tully
>            Priority: Major
>             Fix For: 5.16.0
>
>
> With a transacted consumer on either a topic or queue the prefetch extension increments only. This leads to flow control failing b/c the subscription is never full. Messages can accumulate on the subscription dispatch channel if the consumer is blocked or slow. As a result, memory usage limits can be exceeded for topics.
> There is a similar issue with client_ack mode and prefetch.



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