MembershipChangeInProgressException
class MembershipChangeInProgressException(message: String = "a membership change is already in progress — wait for it to commit before starting another") : Exception
Thrown by RaftNode.changeMembership when a membership change is already in progress (a config entry is uncommitted).
The one-change-at-a-time rule is a liveness guard: it keeps the membership state machine trivial and prevents multiple joint configs from stacking. The caller should wait for the in-flight change to complete (or fail) before retrying.
Constructors
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constructor(message: String = "a membership change is already in progress — wait for it to commit before starting another")