I inherently don't like using a static cluster size configuration. With larger
clusters, nodes joining and leaving the cluster should be seen as "normal" and
it should be able to scale up or down without reconfiguration.
Correct me if I am wrong, but if you have {A, B, C} on switch S1 and {D, E} on switch S2,
and if S2 fails, does JGroups deliver 2 view changes to {A, B, C} (one without D and one
without both D and E) or just a single view change, without D and E? Assuming FD_SOCK is
used for immediate switch failure detection?
If this is the case, can't a split brain threshold be used? I.e., if a view change is
received in which more than N% of members are removed, assume a split brain as opposed to
normal drop-offs?
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