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Posted to dev@activemq.apache.org by "Eivind Sivertsen (JIRA)" <ji...@apache.org> on 2011/06/23 13:36:47 UTC

[jira] [Created] (AMQ-3376) Master/slave + cluster leaves messages on slave

Master/slave + cluster leaves messages on slave
-----------------------------------------------

                 Key: AMQ-3376
                 URL: https://issues.apache.org/jira/browse/AMQ-3376
             Project: ActiveMQ
          Issue Type: Bug
          Components: Broker, Message Store
    Affects Versions: 5.5.0
         Environment: OS: Gentoo Linux.
AMQ: apache-activemq-5.5.0-bin.tar.gz downloaded from http://activemq.apache.org/
            Reporter: Eivind Sivertsen


I've setup 4 servers: two master/slave pairs, where the masters are clustered. Topology looks like this:

!http://activemq.2283324.n4.nabble.com/file/n3617053/amq_setup.001.jpg!

All nodes run on the same host, but within separate folders on the filesystem, so no nodes are sharing anything.

I set up consumers on Node 1 and Node 3. 
I start producing messages to Node 1. 

Messages are distributed (load balanced) across Node 1 and Node 3 as expected, so consumers on both nodes receive messages. 

Messages produced to Node 1 are written to the slave node, Node 2, as expected. But messages that are forwarded to Node 3 for consumption there, are not deleted from Node 2.

If I produce 1000 messages to Node 1, and 400 of those are forwarded to Node 3, there are 400 messages left on Node 2 when all messages are consumed from Node 1 and Node 3 (queueSize = 0 on both). So the messages that are consumed on Node 1 are deleted from Node 2, but not those forwarded to Node 3.

A possible fix: messages that are received on a master node, but forwarded to another node in the cluster, are *not* stored on the slave node.

The [ActiveMQ User mail list discussion|http://activemq.2283324.n4.nabble.com/Master-slave-cluster-leaves-messages-on-slave-td3617053.html] has links to the configurations for node 1-4.

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[jira] [Closed] (AMQ-3376) Master/slave + cluster leaves messages on slave

Posted by "Timothy Bish (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/AMQ-3376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Timothy Bish closed AMQ-3376.
-----------------------------

    Resolution: Won't Fix

Pure master slave functionality is removed in v5.8.0
                
> Master/slave + cluster leaves messages on slave
> -----------------------------------------------
>
>                 Key: AMQ-3376
>                 URL: https://issues.apache.org/jira/browse/AMQ-3376
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Broker, Message Store
>    Affects Versions: 5.5.0
>         Environment: OS: Gentoo Linux.
> AMQ: apache-activemq-5.5.0-bin.tar.gz downloaded from http://activemq.apache.org/
>            Reporter: Eivind Sivertsen
>
> I've setup 4 servers: two master/slave pairs, where the masters are clustered. Topology looks like this:
> !http://activemq.2283324.n4.nabble.com/file/n3617053/amq_setup.001.jpg!
> All nodes run on the same host, but within separate folders on the filesystem, so no nodes are sharing anything.
> I set up consumers on Node 1 and Node 3. 
> I start producing messages to Node 1. 
> Messages are distributed (load balanced) across Node 1 and Node 3 as expected, so consumers on both nodes receive messages. 
> Messages produced to Node 1 are written to the slave node, Node 2, as expected. But messages that are forwarded to Node 3 for consumption there, are not deleted from Node 2.
> If I produce 1000 messages to Node 1, and 400 of those are forwarded to Node 3, there are 400 messages left on Node 2 when all messages are consumed from Node 1 and Node 3 (queueSize = 0 on both). So the messages that are consumed on Node 1 are deleted from Node 2, but not those forwarded to Node 3.
> A possible fix: messages that are received on a master node, but forwarded to another node in the cluster, are *not* stored on the slave node.
> The [ActiveMQ User mail list discussion|http://activemq.2283324.n4.nabble.com/Master-slave-cluster-leaves-messages-on-slave-td3617053.html] has links to the configurations for node 1-4.

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