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From "Joe Fernandez (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (AMQ-2557) Message Broker Hangs When Temp Store Fills
Date Tue, 05 Jan 2010 12:49:15 GMT

     [ https://issues.apache.org/activemq/browse/AMQ-2557?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Joe Fernandez resolved AMQ-2557.
--------------------------------

       Resolution: Fixed
    Fix Version/s: 5.4.0

Duplicate of AMQ-2475; however, 5.3.1 doesn't appear to have the fix

> 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
>             Fix For: 5.4.0
>
>         Attachments: amq.out
>
>
> 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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