for svc, shardsByNamespace := range e.shardsBySvc {
		for ns := range shardsByNamespace {
			e.deleteServiceInner(shardKey, svc, ns, false)
		}
	}
	if e.cache == nil {
		return
	}
	e.cache.ClearAll()
}

// must be called with lock
func (e *EndpointIndex) deleteServiceInner(shard ShardKey, serviceName, namespace string, preserveKeys bool) {
	if e.shardsBySvc[serviceName] == nil ||