[jboss-jira] [JBoss JIRA] Resolved: (JGRP-1061) FLUSH: asymmetric merge fails

[Bela Ban (JIRA)]

     [ https://jira.jboss.org/jira/browse/JGRP-1061?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bela Ban resolved JGRP-1061.
----------------------------

    Resolution: Done


> FLUSH: asymmetric merge fails
> -----------------------------
>
>                 Key: JGRP-1061
>                 URL: https://jira.jboss.org/jira/browse/JGRP-1061
>             Project: JGroups
>          Issue Type: Bug
>            Reporter: Bela Ban
>            Assignee: Bela Ban
>             Fix For: 2.8
>
>
> A: {B,A,C}
> B: {B,C}
> C: {B,C}
> B and C have the same view, but A has a different (older) view which still includes B and C
> The new merge now determines that the partition coordinators for the merge are B and A.
> When FLUSH is enabled, before handling the merge request A tries to flush {A,B,C} and B tries to flush {B,C}. The latter works, but the former fails as A cannot communicate with B and C !
> SOLUTION: the partition for A needs to be {A} and not {B,A,C}. 
> Is this possible in all cases, or can we NOT prevent merging of overlapping partitions ? (Then flush would always fail !)

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