[jboss-jira] [JBoss JIRA] Created: (JGRP-939) MERGE: merging of overlapping subgroups causes problems with UNICAST

[Bela Ban (JIRA)]

MERGE: merging of overlapping subgroups causes problems with UNICAST
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                 Key: JGRP-939
                 URL: https://jira.jboss.org/jira/browse/JGRP-939
             Project: JGroups
          Issue Type: Task
            Reporter: Bela Ban
            Assignee: Bela Ban
             Fix For: 2.6.9, 2.8


- We have {A,B,C,D}
- D is slow, and gets excluded, so A,B,C see themselves as view, but D has view {A,B,C,D}
- When we want to merge {A,B,C} and {A,B,C,D}, the latter subgroup has existing seqnos for A, B and C in UNICAST, whereas the former doesn't
- Say, D has seqnos A:25, B:7 and C:3, and sends a unicast message 26 to A, but A expects #1, then we have an issue

We cannot trash UNICAST connection tables because of JGRP-659

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