onConflict.DoUpdates.Build(builder)
	}

	if len(onConflict.Where.Exprs) > 0 {
		builder.WriteString(" WHERE ")
		onConflict.Where.Build(builder)
		builder.WriteByte(' ')
	}
}

// MergeClause merge onConflict clauses
func (onConflict OnConflict) MergeClause(clause *Clause) {
	clause.Expression = onConflict

		return nil, err
	}
	if isRevisioned(revision) && meshConfig.DefaultConfig.DiscoveryAddress == "" {
		meshConfig.DefaultConfig.DiscoveryAddress = IstiodAddr(istioNamespace, revision)
	}

	// performing separate map-merge, apply seems to completely overwrite all metadata
	proxyMetadata := meshConfig.DefaultConfig.ProxyMetadata

	// support proxy.istio.io/config on the WorkloadGroup, in the WorkloadGroup spec

func GetNotifyKafka(kafkaKVS map[string]config.KVS) (map[string]target.KafkaArgs, error) {
	kafkaTargets := make(map[string]target.KafkaArgs)
	for k, kv := range config.Merge(kafkaKVS, target.EnvKafkaEnable, DefaultKafkaKVS) {
		enableEnv := target.EnvKafkaEnable
		if k != config.Default {
			enableEnv = enableEnv + config.Default + k
		}

// InQueueMetric holds queue stats for replication
type InQueueMetric struct {
	Curr QStat `json:"curr" msg:"cq"`
	Avg  QStat `json:"avg" msg:"aq"`
	Max  QStat `json:"max" msg:"pq"`
}

func (qm InQueueMetric) merge(o InQueueMetric) InQueueMetric {
	return InQueueMetric{
		Curr: qm.Curr.add(o.Curr),
		Avg:  qm.Avg.add(o.Avg),
		Max:  qm.Max.add(o.Max),
	}
}

type queueCache struct {
	srQueueStats InQueueStats

		}

		if wrapInParentheses {
			builder.WriteByte('(')
			expr.Build(builder)
			builder.WriteByte(')')
			wrapInParentheses = false
		} else {
			expr.Build(builder)
		}
	}
}

// MergeClause merge where clauses
func (where Where) MergeClause(clause *Clause) {
	if w, ok := clause.Expression.(Where); ok {
		exprs := make([]Expression, len(w.Exprs)+len(where.Exprs))
		copy(exprs, w.Exprs)

		if objLayer == nil {
			return
		}

		storageInfo := objLayer.LocalStorageInfo(GlobalContext, true)
		onlineDrives, offlineDrives := getOnlineOfflineDisksStats(storageInfo.Disks)
		totalDrives := onlineDrives.Merge(offlineDrives)

		v = storageMetrics{
			storageInfo:   storageInfo,
			onlineDrives:  onlineDrives.Sum(),
			offlineDrives: offlineDrives.Sum(),
			totalDrives:   totalDrives.Sum(),

	// This is the assumed size of bigger buffers and allocation size.
	biggerBufMin = 32 << 10

	// This is the maximum size of bigger buffers.
	biggerBufMax = maxBufferSize

	// If there is a queue, merge up to this many messages.
	maxMergeMessages = 30

	// clientPingInterval will ping the remote handler every 15 seconds.
	// Clients disconnect when we exceed 2 intervals.
	clientPingInterval = 15 * time.Second

func GetLambdaWebhook(webhookKVS map[string]config.KVS, transport *http.Transport) (
	map[string]target.WebhookArgs, error,
) {
	webhookTargets := make(map[string]target.WebhookArgs)
	for k, kv := range config.Merge(webhookKVS, target.EnvWebhookEnable, DefaultWebhookKVS) {
		enableEnv := target.EnvWebhookEnable
		if k != config.Default {
			enableEnv = enableEnv + config.Default + k
		}

		cache.iamUserGroupMemberships = newCache.iamUserGroupMemberships
		cache.iamUserPolicyMap = newCache.iamUserPolicyMap
		cache.iamUsersMap = newCache.iamUsersMap
		// For STS policy map, we need to merge the new cache with the existing
		// cache because the periodic IAM reload is partial. The periodic load
		// here is to account for STS policy mapping changes that should apply

			},
		},
		// TODO https://github.com/istio/istio/issues/22347 this is broken for overriding things to default value
		// This can be seen from REGISTRY_ONLY not applying
		{
			desc:       "pilot_merge_meshconfig",
			diffSelect: "ConfigMap:*:istio$",
			fileSelect: []string{"templates/configmap.yaml", "templates/_helpers.tpl"},
		},
		{
			desc:       "pilot_disable_tracing",
			diffSelect: "ConfigMap:*:istio$",