[jboss-jira] [JBoss JIRA] (AS7-5305) CLONE - Default value of id-cache-size attribute is potencially dangerous when very small messages are used

[Jeff Mesnil (JIRA)]

Jeff Mesnil created AS7-5305:
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             Summary: CLONE - Default value of id-cache-size attribute is potencially dangerous when very small messages are used
                 Key: AS7-5305
                 URL: https://issues.jboss.org/browse/AS7-5305
             Project: Application Server 7
          Issue Type: Bug
          Components: JMS
    Affects Versions: 7.1.2.Final (EAP)
            Reporter: Jeff Mesnil
            Assignee: Clebert Suconic
             Fix For: 7.1.3.Final (EAP)


Hi,

I hit an issue with HornetQ core bridges. I tried test scenario with 4 nodes where:
1) there are two clusters A and B (each contains two nodes)
2) there is hornetq core bridge configured from cluster A to cluster B (A1 -> B1, A2 -> B2)

During sending messages (30KB ByteMessages) to A1 and reading them from B2, node A2 was killed and started a few times. In the end there were duplicated messages. Problem was in low value of id-cache-size attribute which is 2000 by default and confirmation-window-size which is for bridges (1024 * 1024) bytes. 

Can be default value of id-cache-size increased so we can avoid this situation? This is potentially dangerous and hard for admins to realize before the problem occurs.


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