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From "Kevin Su (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQ-1327) Unable to rejoin a failed broker to the broker network
Date Tue, 17 Jul 2007 17:45:44 GMT
Unable to rejoin a failed broker to the broker network
------------------------------------------------------

                 Key: AMQ-1327
                 URL: https://issues.apache.org/activemq/browse/AMQ-1327
             Project: ActiveMQ
          Issue Type: Bug
          Components: Broker
    Affects Versions: 5.x
         Environment: Cygwin in Windows XP; JDK 1.6.0_01-b06, ActiveMQ 5.0 snapshot (rev.
551727)
            Reporter: Kevin Su


Toplogy:                
     A network of brokers (3 or more brokers) in a star configuration, each broker interconnected
to all other brokers in the network.   

Discovery:             
   This problem happens with both static connection and auto-discovery through multi-cast

Broker Conf File:  All brokers have a simple configuration as the one below: 
    <beans>
      <broker brokerName="sender" persistent="false" useJmx="false" xmlns="http://activemq.org/config/1.0">
        <transportConnectors>
          <transportConnector uri="tcp://localhost:62001" />
        </transportConnectors>
        <networkConnectors>
          <networkConnector uri="static:(tcp://localhost:62002,tcp://localhost:62003,tcp://localhost:62004)"/>
        </networkConnectors>
        <persistenceAdapter>
          <memoryPersistenceAdapter/>
        </persistenceAdapter>
      </broker>
    </beans>

How to reproduce:
    1. Start three brokers with names A, B, and C at port 62001, 62002, and 62003 respectively.
    2. Kill broker C (or any of the three brokers) via CTRL-C.  Observe the other borkers
now gets into recovery mode trying to reconnect to C
    3. Restart C.  Notice one of both of the remaining brokers (i.e. A and B) now throws InvalidClientIDException
exception.  If it does not happen the first
        time, repeat until the exception occurs.   

When the exception happens, C can no longer join the broker network. The only way to recover
is to shutdown and restart all three brokers.

This does not seem to happen when there are only two brokers involved.  It happens predictably
in my environment when more then two brokers are involved.


     

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