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https://issues.apache.org/activemq/browse/AMQ-2265?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gary Tully resolved AMQ-2265.
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Resolution: Fixed
expired messages are no longer held in the deliveredMessages list on the
consumer.
> potential OOM (OutOfMemory) on consumer when all prefetched messages expire
> ---------------------------------------------------------------------------
>
> Key: AMQ-2265
> URL: https://issues.apache.org/activemq/browse/AMQ-2265
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker
> Affects Versions: 5.2.0
> Environment: all
> Reporter: Gary Tully
> Assignee: Gary Tully
> Fix For: 5.3.0
>
>
> With a short time to live and a slow consumer, prefetched messages stored on
> the consumer expire. These get a delivery ack (so more mesages can be
> dispatched) but remain in the delivered list till a real ack is produced, on
> the consumption of an non expired message. With a large backlog and very slow
> consumer each prefetch set can be expired and the delivered list can grow to
> produce an ome.
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