// Iterate over topology pairs to get any of the pods being affected by
		// the scheduled pod anti-affinity terms
		for topologyKey, topologyValue := range nodeInfo.Node().Labels {
			tp := topologyPair{key: topologyKey, value: topologyValue}
			if state.existingAntiAffinityCounts[tp] > 0 {
				return false
			}
		}
	}
	return true
}

// structure needs to be revisited.
// Fields are exported for comparison during testing.
type criticalPaths [2]struct {
	// TopologyValue denotes the topology value mapping to topology key.
	TopologyValue string
	// MatchNum denotes the number of matching pods.
	MatchNum int
}

func newCriticalPaths() *criticalPaths {