delete(e.shardsBySvc[serviceName], namespace)
		}
		if len(e.shardsBySvc[serviceName]) == 0 {
			delete(e.shardsBySvc, serviceName)
		}
	}
	epShards.Unlock()
}

// PushType is an enumeration that decides what type push we should do when we get EDS update.
type PushType int

const (
	// NoPush does not push any thing.
	NoPush PushType = iota
	// IncrementalPush just pushes endpoints.