[jboss-jira] [JBoss JIRA] Resolved: (JGRP-701) Investigate making FD_ALL the default failure detection protocol

[Vladimir Blagojevic (JIRA)]

     [ https://jira.jboss.org/jira/browse/JGRP-701?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vladimir Blagojevic resolved JGRP-701.
--------------------------------------

    Resolution: Done


Ran manual test with FD_ALL - all passed. FD_ALL also passed in combination with FD_SOCK.  

> Investigate making FD_ALL the default failure detection protocol
> ----------------------------------------------------------------
>
>                 Key: JGRP-701
>                 URL: https://jira.jboss.org/jira/browse/JGRP-701
>             Project: JGroups
>          Issue Type: Task
>            Reporter: Bela Ban
>            Assignee: Vladimir Blagojevic
>            Priority: Minor
>             Fix For: 2.7
>
>
> Replacing FD, so the new combo would be FD_SOCK and FD_ALL. The advantage of FD_ALL is that we detect *many* concurrent failures much faster than FD. 
> E.g if we have A,B,C,D,E and B and C fail, and FD.timeout=1000 and FD.max_tries=3, FD_ALL.timeout=3000 and FD_ALL.interval=1000, then:
> FD will take timeout * max_tries ms to detect the death of B and the same for C, so a total of 6 seconds.
> FD_ALL will take timeout ms to detect both failures, so a total of 3 seconds.
> FD_ALL is also much simpler in its implementation, therefore simpler to verify for correctness

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