[jboss-jira] [JBoss JIRA] Created: (JGRP-985) Admin Join problem -GMS flush by coordinator failed

[Ronn C (JIRA)]

Admin  Join problem -GMS flush by coordinator failed
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                 Key: JGRP-985
                 URL: https://jira.jboss.org/jira/browse/JGRP-985
             Project: JGroups
          Issue Type: Bug
    Affects Versions: 2.7, 2.6.5, 2.6.4, 2.6.3
         Environment: linux redhat 2.9.6, jdk 1.5
            Reporter: Ronn C
            Assignee: Bela Ban
         Attachments: jgroup.tar.gz

I am experiencing a problem with jgroups trying to join existing cluster.  
 
Occasionally, new node joining a existing cluster can experience this problem. 
 
2009-05-21 12:04:02,568 [main] WARN org.jgroups.protocols.pbcast.GMS:144 - join(callisto.tmca.com.au-18715) sent to callisto.tmca.com.au-8185 timed out (after 3000 ms), retrying 
 
Retries can varies from a couple of times to infinitely retrying. 
 
Debugging the code, I've discovered that before join the coordinator will perform a GMS flush and unless that GMS flush success it won't reply with a join response. 
 
So sure enough at the coordinator, I see this log. 
2009-05-21 12:05:25,902 [ViewHandler,callisto.tmca.com.au-8185] WARN org.jgroups.protocols.pbcast.GMS:749 - GMS flush by coordinator at callisto.tmca.com.au-8185 failed 
 
I've originally come across this problem in our prod environment with 2.6.3. I have been able to replicate it reliably with 2.6.3. I have tested with 2.7.0 and 2.8.0.alpha3 and retries still occurs but generally it would sort itself out within a minute. However, I've found that retries can still occurs infinitely on 2.8.0 if you keep repeating the test often enough.



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