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https://issues.jboss.org/browse/JGRP-1705?page=com.atlassian.jira.plugin....
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Bela Ban edited comment on JGRP-1705 at 9/30/13 9:30 AM:
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In the log, we can see that a MERGE event was sent up with the *same view-id*:
{noformat}
[Sender: 172.29.190.189-svc2-serv-00832070-38705, ViewID :
[172.29.190.39-svc0-serv-00832097-62076|10]]
[Sender: 172.29.190.39-svc0-serv-00832097-62076, ViewID :
[172.29.190.39-svc0-serv-00832097-62076|10]]
[Sender: 172.29.190.155-svc3-serv-ETJ104516289-45232, ViewID :
[172.29.190.39-svc0-serv-00832097-62076|10]]
{noformat}
Of course, we also need to fix suppression of these events, but the second line of defense
is to quickly check if all view-ids are the same and simply drop the MERGE event in this
case.
was (Author: belaban):
In the log, we can see that a MERGE event was sent up with the *same view-id*L
{noformat}
[Sender: 172.29.190.189-svc2-serv-00832070-38705, ViewID :
[172.29.190.39-svc0-serv-00832097-62076|10]]
[Sender: 172.29.190.39-svc0-serv-00832097-62076, ViewID :
[172.29.190.39-svc0-serv-00832097-62076|10]]
[Sender: 172.29.190.155-svc3-serv-ETJ104516289-45232, ViewID :
[172.29.190.39-svc0-serv-00832097-62076|10]]
{noformat}
Of course, we also need to fix suppression of these events, but the second line of defense
is to quickly check if all view-ids are the same and simply drop the MERGE event in this
case.
MERGE3 handles fake merge views
-------------------------------
Key: JGRP-1705
URL:
https://issues.jboss.org/browse/JGRP-1705
Project: JGroups
Issue Type: Bug
Affects Versions: 3.4
Reporter: Karim AMMOUS
Assignee: Bela Ban
Fix For: 3.4
Attachments: JIRA-MERGE-1subGroup-Shutdown.log, JIRA-MERGE-1subGroup.log
Under some conditions, MERGE3 handles fake merge views. After "merge", number
of members that form the cluster still the same and the mergeView contains only one
subgroup.
Scenario:
- Form a large cluster (1115 mbrs)
- Enable MERGE3 TRACE logging level on coordintor member (172.29.190.5)
- Reboot one machine (172.29.190.5) hosting 7 JVMs
- Coord install a new view with 1108 mbrs.
When new members join the cluster we observe a merge view formed by only one subgroup.
Coordinator log file was attached to this JIRA.
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