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https://issues.apache.org/jira/browse/QPID-1637?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martin Ritchie reassigned QPID-1637:
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Assignee: Martin Ritchie
> Update AMQPriorityQueue, potentially creating Purger thread
> -----------------------------------------------------------
>
> Key: QPID-1637
> URL: https://issues.apache.org/jira/browse/QPID-1637
> Project: Qpid
> Issue Type: Sub-task
> Components: Java Broker
> Affects Versions: M4
> Reporter: Martin Ritchie
> Assignee: Martin Ritchie
> Fix For: M5
>
> Original Estimate: 8h
> Remaining Estimate: 8h
>
> The SimpleAMQQueue implementation is easy to decide when to evict a message
> from memory as all new messages will be at the back of the queue and hence
> candidates for eviction.
> When a message arrives for a priority queue it is not guaranteed that it can
> be evicted as it may be high priority and therefore next for delivery. A
> quick check needs to be performed to calculate if we need to evict the
> message or at least start an eviction process to find the least important
> message instead.
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