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Posted to dev@activemq.apache.org by "Bruce Snyder (JIRA)" <ji...@apache.org> on 2010/09/18 18:46:32 UTC
[jira] Updated: (AMQ-2041) Producer blocks, JMX Stats wrong/buggy
[ https://issues.apache.org/activemq/browse/AMQ-2041?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Bruce Snyder updated AMQ-2041:
------------------------------
Fix Version/s: 5.5.0
(was: 5.4.1)
> Producer blocks, JMX Stats wrong/buggy
> --------------------------------------
>
> Key: AMQ-2041
> URL: https://issues.apache.org/activemq/browse/AMQ-2041
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker
> Affects Versions: 5.2.0
> Environment: ActiveMQ 5.20
> Windows XP
> Java 1.6.0_11
> Resin 3.2.1
> Reporter: KC Baltz
> Fix For: 5.5.0
>
> Attachments: JMX Console grab 1.jpg
>
>
> I'm doing some loading testing and finding some bad behavior in ActiveMQ. Symptoms include the producer blocking and the JMX console displaying wild values like >100% for MemoryPercentUsage and negative amounts for QueueSize.
> Setup:
> I've got a simple Java class that sends Persistent messages to a Queue. It's setup to "flood" the server, sending 40,000 as fast as it can.
> I have an MDB running inside Resin 3.2.1 consuming these messages. I'm new to using Resin for this, so it may be contributing to the problem. Also, it appears to create 5 instances of the MDB all listening to the Queue.
> Behavior:
> First, I fire up the message flooder to start filling the Queue. Then, I fire up Resin and the MDB starts consuming the messages. The behavior I've seen is that when I restart Resin, the MemoryPercentUsage jumps to 280% and the producer gets blocked. The MDB is able to continue consuming message, but the Producer never unblocks. If I purge() the queue via the JMX console, it will free up the memory, but then the queue size goes negative as the MDB continues to consume hundreds of messages.
> My main concern is with the producer getting blocked and never unblocking.
> I'll attach a screenshot of the JMX console showing some of the symptoms
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