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Posted to dev@activemq.apache.org by "Gary Tully (JIRA)" <ji...@apache.org> on 2010/07/28 12:48:54 UTC
[jira] Resolved: (AMQ-2774) Network of brokers : Multicast
discovery stopped to work
[ https://issues.apache.org/activemq/browse/AMQ-2774?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gary Tully resolved AMQ-2774.
-----------------------------
Fix Version/s: 5.4.0
(was: 5.4.1)
Resolution: Fixed
patch applied with thanks to r980014
Great to have the test case and additional validation, that is a some what messy area of the code base.
Just for future reference, svn diff is a great way to produce a patch as it just captures the differences. Makes it alot eastier to apply a patch to trunk when it was created from a branch.
Can you cast an eye over the diffs in the commit log just to be sure to be sure it is all there. thanks again.
> Network of brokers : Multicast discovery stopped to work
> --------------------------------------------------------
>
> Key: AMQ-2774
> URL: https://issues.apache.org/activemq/browse/AMQ-2774
> Project: ActiveMQ
> Issue Type: Bug
> Affects Versions: 5.2.0
> Environment: Linux
> Reporter: Eric
> Assignee: Gary Tully
> Fix For: 5.4.0
>
> Attachments: activemq-all-5.3.2-eric.jar, activemq-bug-2774-tcpToSsl.log, AMQ2774.tar, JMAC-BEA-lastlog.log-20100315, SocketTstFactory.java
>
>
> Hi everybody
> I experiment a big problem with the multicast discovery algorithm, in a network of brokers topology.
> In some conditions, a broker can't reestablish a distant connection even if the distant broker is restarted.
> I have the log traces that would help to identify the origin of the problem.
> When there is no discovery/connection error, I can see these 2 lines in the activemq log file
> #08 Jun 2010 14:31:30,639 INFO [Multicast Discovery Agent Notifier] org.apache.activemq.network.DiscoveryNetworkConnector
> Establishing network connection between from vm://ACCLU-tpnocp04v to tcp://tpnocp09v-bus:13100?useLocalHost=false
> #08 Jun 2010 14:31:30,692 INFO [StartLocalBridge: localBroker=vm://ACCLU-tpnocp04v#26] org.apache.activemq.network.DemandForwardingBridge
> Network connection between vm://ACCLU-tpnocp04v#26 and tcp://tpnocp09v-bus/10.18.126.28:13100(MOM-tpnocp09v) has been established.
> When the connection is broken, I can see this line in the log.
> #11 Jun 2010 12:37:32,585 INFO [Multicast Discovery Agent Notifier] org.apache.activemq.network.DemandForwardingBridge
> ACCLU-tpnocp04v bridge to MOM-tpnocp09v stopped
> Then the current ACCLU-tpnocp04v broker tries to reestablish the connection :
> #11 Jun 2010 12:37:34,475 INFO [Multicast Discovery Agent Notifier] org.apache.activemq.network.DiscoveryNetworkConnector
> Establishing network connection between from vm://ACCLU-tpnocp04v to tcp://tpnocp09v-bus:13100?useLocalHost=false
> But, here, the second line of the log ("has been established") doesn't appear in the log file !! I don't know exactly if the connection is up or not.
> Then the connection is broken again (look at "Unknown" instead of "MOM-tpnocp09v".
> #11 Jun 2010 13:33:58,655 WARN [ActiveMQ Transport: tcp://tpnocp09v-bus/10.18.126.28:13100] org.apache.activemq.network.DemandForwardingBridge
> Network connection between vm://ACCLU-tpnocp04v#58 and tcp://tpnocp09v-bus/10.18.126.28:13100 shutdown due to a remote error: java.net.SocketException: Connection reset
> #11 Jun 2010 13:33:58,657 INFO [NetworkBridge] org.apache.activemq.network.DemandForwardingBridge^M
> ACCLU-tpnocp04v bridge to Unknown stopped
> And, now, even if I restart the distant broker ( MOM-tpnocp09v ), no line (Establishing/Has been established) appears, and no network connection is reestablished between ACCLU-tpnocp04v and MOM-tpnocp09v. it seems that this ACCLU-tpnocp04v broker can no longer establish a connection with the MOM-tpnocp09v broker !!!
> The production teams tell me that this problem seems not to be resolved in fuse-5.3.0.6 version.
> Eric-AWL
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