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From "Gary Tully (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (AMQ-2265) potential OOM (OutOfMemory) on consumer when all prefetched messages expire
Date Fri, 22 May 2009 21:25:50 GMT

     [ https://issues.apache.org/activemq/browse/AMQ-2265?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Gary Tully resolved AMQ-2265.
-----------------------------

    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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