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From "Lorenz Quack (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (QPID-6764) Message age alerting is inappropriate on the enqueue path
Date Mon, 14 Mar 2016 15:22:33 GMT

     [ https://issues.apache.org/jira/browse/QPID-6764?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Lorenz Quack resolved QPID-6764.
    Resolution: Fixed

> Message age alerting is inappropriate on the enqueue path
> ---------------------------------------------------------
>                 Key: QPID-6764
>                 URL: https://issues.apache.org/jira/browse/QPID-6764
>             Project: Qpid
>          Issue Type: Improvement
>          Components: Java Broker
>            Reporter: Keith Wall
>            Assignee: Rob Godfrey
>             Fix For: qpid-java-6.1
> The Java Broker supports number of configurable message/queue alerts such as message
size alert (overly large messages), queue depth alert (queues with an unexpected number of
message on them), or message age alert (a queue containing a message which is older than a
threshold).  These checks are performed in two places: periodically by housekeeping and when
a message is enqueued.
> The message age alert check is performed on by housekeeping and on enqueue of a new message.
 The latter check is inappropriate and is a waste of resources.  Unlike the other checks,
enqueuing a message can't affect the outcome.  It should be performed only be housekeeping.
> The message age check involves taking a lock on the oldest message - so may have a significant
computation overhead.

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