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From "Scott Emmons (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMQ-2743) Pure master/slave configuration will not failover to slave when master fails
Date Wed, 13 Apr 2011 00:27:05 GMT

    [ https://issues.apache.org/jira/browse/AMQ-2743?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13019133#comment-13019133
] 

Scott Emmons commented on AMQ-2743:
-----------------------------------

For what it's worth we carefully retested our failover scenarios after carefully checking
configurations in 5.4.2 and can not reproduce the issue any longer. Our current configuration
has two bridged AMQ networks. The configuration that seems to work for us is primary/backup
with shared disk in each network. Our bridges use a static: connector with both uplink AMQ
servers listed (note *not* failover: as that does not work properly). Since only the primary
or the backup server is alive at any given time, this works. Our clients all use a failover:
connector with ?updateURIsSupported=false to make sure they only talk to their proper network.
We didn't do anything with maxReconnectAttempts...

> Pure master/slave configuration will not failover to slave when master fails 
> -----------------------------------------------------------------------------
>
>                 Key: AMQ-2743
>                 URL: https://issues.apache.org/jira/browse/AMQ-2743
>             Project: ActiveMQ
>          Issue Type: Bug
>    Affects Versions: 5.3.1
>            Reporter: Bruce Snyder
>             Fix For: 5.6.0
>
>         Attachments: activemq-brokerA.xml, activemq-brokerB-master.xml, activemq-brokerB-slave.xml
>
>
> When using a pure/master slave configuration in ActiveMQ 5.3.1 and the master is killed,
the failover to the slave never takes place. 
> Below is a description of the topology being used: 
> * The producer sends messages to brokerA 
> * BrokerA has a uni-directional network connection using the failover transport to brokerB-master
and brokerB-slave 
> * BrokerB-master and brokerB-slave each have a uni-directional network connection using
failover to brokerA 
> * The consumer uses a failover connection to brokerB-master and brokerB-slave 
> Below are the steps to reproduce the problem: 
> # In terminal one, start up brokerA 
> # In terminal two, start up brokerB-master 
> # In terminal three, start up brokerB-slave 
> # In terminal four, start up the consumer that connects to brokerB-master and brokerB-slave
 
> # In terminal five, startup the producer that connects to brokerA to send messages 
> # In terminal two, kill brokerB-master 
> # Notice that the producer will continue sending messages until producer flow control
kicks in and blocks the send operation, but brokerB-slave never takes over 
> I copied the same exact configuration files over to instances of ActiveMQ 5.3.0 and it
works without a problem. There must be something in ActiveMQ 5.3.1 that is causing this issue.


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