[jboss-jira] [JBoss JIRA] Resolved: (JGRP-332) Support concurrent flushing

[Vladimir Blagojevic (JIRA)]

     [ http://jira.jboss.com/jira/browse/JGRP-332?page=all ]

Vladimir Blagojevic resolved JGRP-332.
--------------------------------------

    Resolution: Done

Resolved on Nov/16/2006. See org.jgroups.tests.ConcurrentStartupTest.

> Support concurrent flushing
> ---------------------------
>
>                 Key: JGRP-332
>                 URL: http://jira.jboss.com/jira/browse/JGRP-332
>             Project: JGroups
>          Issue Type: Feature Request
>    Affects Versions: 2.4
>            Reporter: Vladimir Blagojevic
>         Assigned To: Vladimir Blagojevic
>             Fix For: 2.5
>
>
> JGroups 2.4 introduces FLUSH protocol that enables stop-the-world model for JGroups nodes. However, FLUSH protocol currently does not support coordination between nodes when it comes to concurrent requests for flush. 
> Problem 1)
> If there are concurrent requests for flush (e.g. every node concurrently does channel.getState()) FLUSH should deterministically chose a winner flush request and other nodes should retry flush. 
> Problem 2) 
> If more than one MuxChannel sitting on top of JChannel requests flush then node has to again deterministically determine a winner request and other MuxChannels should retry. 

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