activemq-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Nikolai Penkov (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQ-921) When recovering messages on startup - execution of Store.getMessage is executed as many times as many subscribers to this destination there are
Date Thu, 14 Sep 2006 10:26:23 GMT
When recovering messages on startup - execution of Store.getMessage is executed as many times
as many subscribers to this destination there are
-----------------------------------------------------------------------------------------------------------------------------------------------

                 Key: AMQ-921
                 URL: https://issues.apache.org/activemq/browse/AMQ-921
             Project: ActiveMQ
          Issue Type: Improvement
          Components: Broker
    Affects Versions: 4.1
         Environment: Any
            Reporter: Nikolai Penkov
            Priority: Minor


Fix of issue https://issues.apache.org/activemq/browse/AMQ-878 (when recovering gigantic queues)
come to a new performance problem. - When recovering messages on startup - execution of Store.getMessage
(from IndirectMessageRefference.incrementReferenceCount)  is executed as many times as many
subscribers to this destination there are. E.g.
1. Start of broker with a queue A with a lot of messages
2. Queue is recovered from database by creation of IndirectMessageRefferences
3. 2 Subscribers connect to recovered queue  with two different message selectors.
4. Messages are loaded from database (IndirectMessageRefference.incrementReferenceCount ->
destinationStore.getMessage) twice - for 2 subscribers...

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: https://issues.apache.org/activemq/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Mime
View raw message