[infinispan-issues] [JBoss JIRA] (ISPN-4404) The coordinator leaving the cluster should not cancel state transfer

[Pedro Ruivo (JIRA)]

     [ https://issues.jboss.org/browse/ISPN-4404?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Pedro Ruivo updated ISPN-4404:
------------------------------
    Fix Version/s: 7.1.0.Beta1
                       (was: 7.1.0.Alpha1)


> The coordinator leaving the cluster should not cancel state transfer
> --------------------------------------------------------------------
>
>                 Key: ISPN-4404
>                 URL: https://issues.jboss.org/browse/ISPN-4404
>             Project: Infinispan
>          Issue Type: Enhancement
>          Components: Core, State Transfer
>    Affects Versions: 6.0.2.Final
>            Reporter: Dan Berindei
>             Fix For: 7.1.0.Beta1
>
>
> When the cluster coordinator changes or a merge view is received, the new coordinator tries to reconcile the cache topologies of the different partitions and cancels any state transfer in progress.
> But most of the time, the coordinator changing doesn't mean that there are multiple partitions, just that the old coordinator died. In that case there is a single cache topology, so there is nothing to reconcile and no reason to cancel the pending ST.
> We can't rely on the new coordinator receiving a MergeView, because the old coordinator might have received a MergeView and died soon afterwards.



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