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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