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Once the coordinator's ID is known the new member sends a JoinRequest to it.  The new member will know that it has been accepted when it receives a membership view containing its ID.  At this point it sets the view-ID of its identifiers.  The view-ID, in combination with its IP address and membership port (the UDP port used by JGroups) uniquely identifies this member.

title state transitions for joining member
[*] -> Discovery
Discovery: search for coordinator
Discovery: using Locator service
Discovery -> Joining
Joining: join req sent to coordinator
Joining -> Member
Member: unique ID established
Member: membership view installed
Member -> [*]

Simultaneous joins and leaves

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