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https://issues.apache.org/activemq/browse/AMQ-2236?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hiram Chirino resolved AMQ-2236.
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Resolution: Fixed
Applied. Thx!
> activemq-flow: SharedQueue cursoring/paging enhancements -- updated queue to
> enforce a memory limit less than the queue's max size
> ----------------------------------------------------------------------------------------------------------------------------------
>
> Key: AMQ-2236
> URL: https://issues.apache.org/activemq/browse/AMQ-2236
> Project: ActiveMQ
> Issue Type: Improvement
> Components: Broker
> Affects Versions: incubation
> Environment: N/A
> Reporter: Colin MacNaughton
> Fix For: incubation
>
> Attachments: AMQ-2236patch.txt
>
>
> This improvement updates the cursoring logic in shared queue to allow
> enforcement of a memory limit that is separate from the queue's size limit.
> If the queue is configured to limit memory then each cursor now additionally
> gets a memory limiter/controller. When elements are added to the queue open
> cursors are checked to see if they can absorb the element in memory -- if not
> the element is paged out to disk.
> This is still a work in progress -- the implementation is still a bit buggy,
> and it needs to be further enhanced to throttle back producers to avoid
> constantly paging out/in elements once the queue's cursors have caught up to
> the live delivery stream.
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