case "ts":
			var zb0002 uint32
			zb0002, err = dc.ReadMapHeader()
			if err != nil {
				err = msgp.WrapError(err, "Tiers")
				return
			}
			if z.Tiers == nil {
				z.Tiers = make(map[string]tierStats, zb0002)
			} else if len(z.Tiers) > 0 {
				for key := range z.Tiers {
					delete(z.Tiers, key)
				}
			}
			for zb0002 > 0 {
				zb0002--
				var za0001 string
				var za0002 tierStats

		Help:      "Total bytes transitioned to a tier",
		Type:      gaugeMetric,
	}
}

func getClusterTransitionedObjectsMD() MetricDescription {
	return MetricDescription{
		Namespace: clusterMetricNamespace,
		Subsystem: ilmSubsystem,
		Name:      transitionedObjects,
		Help:      "Total number of objects transitioned to a tier",
		Type:      gaugeMetric,
	}
}

		},
		{name: "matchExpressions - 'values' must be specified when 'operator' is 'In' or 'NotIn'",
			obj: map[string]interface{}{
				"matchExpressions": []interface{}{
					map[string]interface{}{
						"key":      "tier",
						"operator": "In",
						"values":   []interface{}{},
					},
				},
			},

	// Make a copy of the supplied metadata to avoid
	// to change the original one.
	defaultMeta := make(map[string]string, len(userMeta))
	for k, v := range userMeta {
		// skip tier metadata when copying metadata from source object
		switch k {
		case metaTierName, metaTierStatus, metaTierObjName, metaTierVersionID:
			continue
		}
		defaultMeta[k] = v
	}

  - [alpha] Kubelet launches container in a per pod cgroup hierarchy based on quality of service tier ([kubernetes/features#126](https://github.com/kubernetes/enhancements/issues/126))