Github user sjcorbett commented on the pull request:
https://github.com/apache/incubator-brooklyn/pull/1050#issuecomment-158955208
I think you're right that this can just come down to nomenclature.
ClusterAndMembersUpCallable? Though that doesn't indicate that it expects at
least one member.
To be honest I think it would be clearer to keep the three checks separate
(cluster up, members up, members.size > 0) and get your launch latch by
combining them with a reducer that ANDs them all together. (Not that I know how
to express this in YAML, of course!)
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