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From "Sam Zhou (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQ-1115) Memory Leak: OutOfMemoryException throws if TopicSubscriber.receive(timeout) is used to pull JMS messages
Date Thu, 04 Jan 2007 15:37:48 GMT
Memory Leak: OutOfMemoryException throws if TopicSubscriber.receive(timeout) is used to pull
JMS messages
---------------------------------------------------------------------------------------------------------

                 Key: AMQ-1115
                 URL: https://issues.apache.org/activemq/browse/AMQ-1115
             Project: ActiveMQ
          Issue Type: Bug
          Components: JMS client
    Affects Versions: 4.1.0
         Environment: Windows XP Professional, JDK 1.5
            Reporter: Sam Zhou
         Attachments: ActiveMq Tester.zip

Attached sources can generate OutOfMemoryException when ActiveMQ pulls messages by using TopicSubscriber.receive(timeout),
on the other hand, if I use callback TopicSubscriber.onMessage(), all the messages are received
without any problem. Please see README.TXT for detail usage of the program.

Assume I set prefetch=50, publisherCount=10, subscriberCount=10, each publisher publishs 500
messages, and each message size is 100kb,

If I use callback (option -msgcallback given in command line), e.g., TopicSubscriber.onMessage(),
all 50,000 messages are received without error. 

if I don't use callback (option -msgcallback not given in command line), e.g., TopicSubscriber.receive(timeout),
after receiving about a thousand of messages, OutOfMemory error occurs, and the program starts
to throw Exception.




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