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From "Michael Chen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (AMQ-1825) Pure MasterSlave doesn't work
Date Thu, 09 Apr 2009 18:13:35 GMT

    [ https://issues.apache.org/activemq/browse/AMQ-1825?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=51133#action_51133
] 

Michael Chen commented on AMQ-1825:
-----------------------------------

If in step 2 above, a timer is run that triggers a message being sent to a topic every second
via a vm transport. then it will produce a different exception at step 4:

ERROR MasterBroker                   - Slave Failed
java.lang.NullPointerException
        at org.apache.activemq.broker.region.Topic.send(Topic.java:266)
        at org.apache.activemq.broker.region.AbstractRegion.send(AbstractRegion.java:350)
        at org.apache.activemq.broker.region.RegionBroker.send(RegionBroker.java:437)
        at org.apache.activemq.broker.TransactionBroker.send(TransactionBroker.java:224)
        at org.apache.activemq.broker.BrokerFilter.send(BrokerFilter.java:126)
        at org.apache.activemq.broker.CompositeDestinationBroker.send(CompositeDestinationBroker.java:95)
        at org.apache.activemq.broker.MutableBrokerFilter.send(MutableBrokerFilter.java:133)
        at org.apache.activemq.broker.TransportConnection.processMessage(TransportConnection.java:450)
        at org.apache.activemq.command.ActiveMQMessage.visit(ActiveMQMessage.java:639)
        at org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:305)
        at org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:179)
        at org.apache.activemq.transport.ResponseCorrelator.onCommand(ResponseCorrelator.java:104)
        at org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:68)
        at org.apache.activemq.transport.vm.VMTransport.iterate(VMTransport.java:205)
        at org.apache.activemq.thread.DedicatedTaskRunner.runTask(DedicatedTaskRunner.java:98)
        at org.apache.activemq.thread.DedicatedTaskRunner$1.run(DedicatedTaskRunner.java:36)


> Pure MasterSlave doesn't work
> -----------------------------
>
>                 Key: AMQ-1825
>                 URL: https://issues.apache.org/activemq/browse/AMQ-1825
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Broker
>    Affects Versions: 5.1.0
>            Reporter: Dima
>             Fix For: 5.3.0
>
>
> Slave doen't synchronize state with master
> 1.If master has messages which absent in slave, these messages won't replicate ot slave
after attaching slave to master.
> 2.If remove messages via JMX purge() in master, messages in slave won't remove
> 3. If slave has messages wich absent in master, these messages won't remove when slave
is attaching to master

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