[jboss-jira] [JBoss JIRA] (JGRP-1429) The timeout of VERIFY_SUSPECT protocol is not guaranteed

Bela Ban (JIRA) jira-events at lists.jboss.org
Tue Feb 28 03:42:36 EST 2012


     [ https://issues.jboss.org/browse/JGRP-1429?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bela Ban updated JGRP-1429:
---------------------------

       Fix Version/s: 3.0.7
                      3.1
    Git Pull Request: https://github.com/belaban/JGroups/pull/30  (was: https://github.com/belaban/JGroups/pull/30)

    
> The timeout of VERIFY_SUSPECT protocol is not guaranteed
> --------------------------------------------------------
>
>                 Key: JGRP-1429
>                 URL: https://issues.jboss.org/browse/JGRP-1429
>             Project: JGroups
>          Issue Type: Bug
>    Affects Versions: 3.0.5
>            Reporter: Benoit Leblanc
>            Assignee: Bela Ban
>             Fix For: 3.0.7, 3.1
>
>
> The verification of a suspected member can take more than timeout. It depend of being followed closely by other suspected members or not.
> Let's timeout = 2000ms.
> - At T: Member A is suspected (by Failure Detection protocol).
> - At T +  1500ms:  Member B is suspected too.
> Member A is declared as definitively dead 3500ms later. The "worst case" occurs when a continuous flow of suspected members arrive with an interval between 0 and 2000ms (timeout). Suspected members are never removed from view.

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