[jboss-jira] [JBoss JIRA] (JGRP-1876) MERGE3 : Strage number and content of subgroups

[Karim AMMOUS (JIRA)]

Karim AMMOUS created JGRP-1876:
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             Summary: MERGE3 : Strage number and content of subgroups
                 Key: JGRP-1876
                 URL: https://issues.jboss.org/browse/JGRP-1876
             Project: JGroups
          Issue Type: Bug
      Security Level: Public (Everyone can see)
    Affects Versions: 3.4.2
            Reporter: Karim AMMOUS
            Assignee: Bela Ban


Using JGroups 3.4.2, a split occurred and a merge was processed successfully but number of subgroups is wrong (210 instead of 2).
The final mergeView is correct and contains 210 members.
Here is an extract of subviews: 

{code}

INFO | Incoming-18,cluster,term-ETJ101697729-31726:host:192.168.56.6:1:CL(GROUP01)[F] | [MyMembershipListener.java:126] | (middleware) | MergeView view ID = [serv-ZM2BU35940-58033:vt-14:192.168.55.55:1:CL(GROUP01)[F]|172]
210 subgroups 
[....
[term-ETJ100691812-36873:host:192.168.56.16:1:CL(GROUP01)[F]|170] (1) [term-ETJ104215245-11092:host:192.168.56.72:1:CL(GROUP01)[F]]
[term-ETJ100691812-36873:host:192.168.56.16:1:CL(GROUP01)[F]|170] (1) [serv-ZM2BU38960-6907:asb:192.168.55.52:1:CL(GROUP01)[F]]
[term-ETJ101697729-31726:host:192.168.56.6:1:CL(GROUP01)[F]|171] (1) [term-ETJ101697729-31726:host:192.168.56.6:1:CL(GROUP01)[F]]
[term-ETJ100691812-36873:host:192.168.56.16:1:CL(GROUP01)[F]|170] (1) [serv-ZM2BU47533-55240:vt-14:192.168.55.57:1:CL(GROUP01)[F]]
[term-ETJ100691812-36873:host:192.168.56.16:1:CL(GROUP01)[F]|170] (1) [serv-ZM2BU35943-49435:asb:192.168.55.51:1:CL(GROUP01)[F]]
....]

{code}

II wasn't able to reproduce that with a simple program. But I observed that merge was preceded by an ifdown/ifup on host 192.168.56.6. That member lost all others members, but it still present in their view.
Example:  {A, B, C} => {A, B, C} and {C} => {A, B, C}



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