[infinispan-issues] [JBoss JIRA] Updated: (ISPN-1077) Multiple leaves are not handled correctly with DIST

[Mircea Markus (JIRA)]

     [ https://issues.jboss.org/browse/ISPN-1077?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mircea Markus updated ISPN-1077:
--------------------------------

    Affects Version/s: 4.2.1.FINAL
                           (was: 4.2.0.Final)


> Multiple leaves are not handled correctly with DIST 
> ----------------------------------------------------
>
>                 Key: ISPN-1077
>                 URL: https://issues.jboss.org/browse/ISPN-1077
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Distributed Cache
>    Affects Versions: 4.2.1.FINAL
>            Reporter: Mircea Markus
>            Assignee: Manik Surtani
>             Fix For: 4.2.2.FINAL, 5.0.0.FINAL
>
>
> When multiple caches are leaving at the same time(i.e. the diff between jgroups views is more than one address), Infinispan ends up with an inconsistent hash function: it is aware about nodes that are no longer present in the cluster. 
> The root cause of the problem is in DistributionManagerImpl.rehash(...):
> - the list of leavers is determined as follows:    
> Address leaver = MembershipArithmetic.getMemberLeft(oldMembers, newMembers);
> - this method always assumes a single leaver, but there can be many.
> Unit test attached.

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