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http://jira.jboss.com/jira/browse/JGRP-679?page=comments#action_12397449 ]
Stefan Lotties commented on JGRP-679:
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Additions:
In the log you see that the JOIN_REQ of the member is being answered by the coordinator
with a JOIN_RSP so it seems that member was accepted to the group. Unfortunately after
about seven seconds the member sends another JOIN_REQ even though I can't see the
reason why.
Member propagates non-existing coordinator
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Key: JGRP-679
URL:
http://jira.jboss.com/jira/browse/JGRP-679
Project: JGroups
Issue Type: Bug
Affects Versions: 2.2.8
Environment: Oracle Application Server Cluster running application using JGroups
Reporter: Peter Fuchs
Assigned To: Bela Ban
Priority: Critical
Attachments: cms_application.log.gz
Our application is running on a clustered application server environment (Oracle AS
10gR2) with 9 application instances in total. We are using JGroups for keeping the object
caches of all application instances in sync.
From time to time we encounter the problem that our application cannot be started and
seems to "hang". After setting the JGroups logger to DEBUG we could see that it
was JGroups that was trying to connect to a coordinator that did not exist anymore. After
some investigation we found out that there was one running instance propagating a
coordinator that did not exist any longer. The only solution in that case was to restart
the instance that was propagating the wrong coordinator address.
As the version we currently use (2.2.8) is quite old I checked Jira for fixes regarding
this issue but could not really identify this specific behaviour (maybe due to my poor
knowledge about the internals of JGroups). We are planning to use JGroups V2.4.1(SP4) in
our future software releases (as we are bound to JDK 1.4.2) but would like to know if this
issue has been fixed in that version.
Please find attached an example log file excerpt.
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