[jboss-jira] [JBoss JIRA] Commented: (JGRP-1170) Subgroups not consistent in MERGE_VIEW

[Bela Ban (JIRA)]

    [ https://jira.jboss.org/jira/browse/JGRP-1170?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12527023#action_12527023 ] 

Bela Ban commented on JGRP-1170:
--------------------------------

Can you reproduce this ?

Having the same view IDs means nothing if there is a partition, e.g.

A#22 {A,B,C} can get split into

A#23 {A,B} and
C#23 {C}

So both subgroups have the same view id.

If A evolves into A#24, and then the subgroups merge, the new view might be
A#25 {A,B,C}

> Subgroups not consistent in MERGE_VIEW
> --------------------------------------
>
>                 Key: JGRP-1170
>                 URL: https://jira.jboss.org/jira/browse/JGRP-1170
>             Project: JGroups
>          Issue Type: Bug
>    Affects Versions: 2.8, 2.9
>         Environment: Linux, Latest Branch 2.9
>            Reporter: vivek v
>            Assignee: Vladimir Blagojevic
>             Fix For: 2.10
>
>
> We got two nodes and they are giving different node list in the same subgroup. 
> Manager node gets a Merge view,
> 2010-03-12 18:40:32,489 INFO  [Incoming-2,vivek_cluster,manager_10.0.2.71:4576] RpcServiceManager - viewAccepted()-> New View: MergeView::[manager_10.0.2.71:4576|80] [manager_10.0.2.71:4576, probe_10.0.4.5:4576, collector_10.0.2.72:4576], subgroups=[[manager_10.0.2.71:4576|78] [collector_10.0.2.72:4576], [manager_10.0.2.71:4576|79] [manager_10.0.2.71:4576, probe_10.0.4.5:4576]]
> see view id - 78, it shows only collector as part of the group.  Now see on the collector node,
> 2010-03-12 18:38:14,652 INFO  [Incoming-2,vivek_cluster,collector_10.0.2.72:4576] RpcServiceManager - viewAccepted()-> New View: MergeView::[manager_10.0.2.71:4576|78] [manager_10.0.2.71:4576, probe_10.0.4.5:4576, collector_10.0.2.72:4576], subgroups=[[manager_10.0.2.71:4576|76] [collector_10.0.2.72:4576], [manager_10.0.2.71:4576|77] [manager_10.0.2.71:4576, probe_10.0.4.5:4576]]
> View #78 was a merge view on Collector and it had 3 nodes. So, basically the new view on Manager( view# 80) is showing subgroup (# 78) with different nodes.
> How can we have the same subgroup with different node list?

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