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From "Joe Fernandez (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQ-2557) Message Broker Hangs When Temp Store Fills
Date Mon, 04 Jan 2010 15:26:16 GMT
Message Broker Hangs When Temp Store Fills
------------------------------------------

                 Key: AMQ-2557
                 URL: https://issues.apache.org/activemq/browse/AMQ-2557
             Project: ActiveMQ
          Issue Type: Bug
          Components: Broker
    Affects Versions: 5.3.0
         Environment: AMQ 5.3, Open Suse 11.0, JVM 1.6.0_14-b08, KahaDB, default store cursor,
temp storage set to 300mb.
            Reporter: Joe Fernandez


This is an exception test with the following set up. 

ProducerTool sends 200000 non-persistent messages to a Topic with the message size = 2000.


The ConsumerTool that reads the messages from the Topic has a sleep time of 2 msec, thus creating
a slow consumer scenario.   

Temp store = 300mb, Topic memoryLimit = 30mb, producerFlowControl = false. 

The consumer begins to receive messages and messages get written out to the temp store as
expected, because the slow consumer cannot keep up with the message load and temp topic fills
up. However, when the temp store eventually fills as well, the broker goes comatose. It no
longer accepts clients connections and stops dispatching messages to the slow consumer.  You'd
expect the broker to at least continue dispatching messages to the slow consumer while the
producer is blocked awaiting the temp store to free up. If I double the temp store capacity,
everyone is a happy camper. I'll attach a thread dump.





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