MembersForQuery returns the list of nodes to broadcast requests to If partitions are assigned to nodes in groups (a[0,1], b[0,1], c[2,3], d[2,3] as opposed to a[0,1], b[0,2], c[1,3], d[2,3]), only 1 member per partition is returned.

MembersForSpeculativeQuery returns a prioritized list of nodes for each shard group keyed by the first (lowest) partition of their shard group.

capitalized form is what stringer (.String()) generates and is used for json serialization.

if gossip not enabled, will be 0 regardless of config.

go:generate stringer -type=NodeMode -trimprefix=Mode.

go:generate stringer -type=NodeState.