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

[Bela Ban (JIRA)]

Investigate making FD_ALL the default failure detection protocol
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                 Key: JGRP-701
                 URL: http://jira.jboss.com/jira/browse/JGRP-701
             Project: JGroups
          Issue Type: Task
            Reporter: Bela Ban
         Assigned To: Bela Ban
            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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