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Posted to dev@activemq.apache.org by "Gary Tully (JIRA)" <ji...@apache.org> on 2010/09/17 14:19:41 UTC
[jira] Issue Comment Edited: (AMQ-2217) Message delivery to
selector based consumers pauses if selector leaves messages on the queue.
[ https://issues.apache.org/activemq/browse/AMQ-2217?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=61894#action_61894 ]
Gary Tully edited comment on AMQ-2217 at 9/17/10 8:18 AM:
----------------------------------------------------------
This is a known limitation, with the Apollo (AMQ 6) project we will be able to address this architectural constraint.
In the mean time, using a large maxPageSize, named queues at the application level, or filtered name virtual queues can provide an alternative strategy.
was (Author: gtully):
This is a known limitation, with the Apollo (AMQ 6) project we will be able to address this archriectural constraint.
In the mean time, using a large maxPageSize, named queues at the application level, or filtered name virtual queues can provide an alternative strategy.
> Message delivery to selector based consumers pauses if selector leaves messages on the queue.
> ---------------------------------------------------------------------------------------------
>
> Key: AMQ-2217
> URL: https://issues.apache.org/activemq/browse/AMQ-2217
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker
> Affects Versions: 5.1.0, 5.3.0
> Environment: Windows XP Professional 2002, Service Pack 2, Intel Pentium D 3ghz, various 1.5 and 1.6 versions of jdk
> Reporter: Jar Lyons
> Assignee: Gary Tully
> Fix For: 5.4.1
>
> Attachments: DiscriminatingConsumerLoadTest.java
>
>
> I have written a test case which will demonstrate the difference between the following two scenarios:
> 1. Producer sending dissimilar JMSType messages to a queue, with a client consuming all messages (no selector).
> 2. Producer sending dissimilar JMSType messages to a queue, with a client consuming every other message (using selector).
> With a large enough size of test messages (for my environment about 5k), scenario 2 will fail with delivery to the consumer halted, while scenario 1 will not.
> Test Output:
> waiting for consumer to pause ... consumer: 0, producer: 0
> waiting for consumer to pause ... consumer: 200, producer: 5000
> waiting for consumer to pause ... consumer: 200, producer: 5000
> waiting for consumer to pause ... consumer: 200, producer: 5000
> waiting for consumer to pause ... consumer: 200, producer: 5000
> waiting for consumer to pause ... consumer: 200, producer: 5000
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