Support holt_winters function

Signed-off-by: SungJin1212 <tjdwls1201@gmail.com>

CHANGELOG.md

@@ -4,6 +4,7 @@
 * [FEATURE] Query Frontend: Add dynamic interval size for query splitting. This is enabled by configuring experimental flags `querier.max-shards-per-query` and/or `querier.max-fetched-data-duration-per-query`. The split interval size is dynamically increased to maintain a number of shards and total duration fetched below the configured values. #6458
 * [FEATURE] Querier/Ruler: Add `query_partial_data` and `rules_partial_data` limits to allow queries/rules to be evaluated with data from a single zone, if other zones are not available. #6526
 * [FEATURE] Update prometheus alertmanager version to v0.28.0 and add new integration msteamsv2, jira, and rocketchat. #6590
+* [ENHANCEMENT] Update prometheus version to v3.1.0. #6583
 * [ENHANCEMENT] Add `compactor.auto-forget-delay` for compactor to auto forget compactors after X minutes without heartbeat. #6533
 * [ENHANCEMENT] StoreGateway: Emit more histogram buckets on the `cortex_querier_storegateway_refetches_per_query` metric. #6570
 * [ENHANCEMENT] Querier: Apply bytes limiter to LabelNames and LabelValuesForLabelNames. #6568

go.mod

@@ -247,8 +247,9 @@ require (
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20241209162323-e6fa225c2576 // indirect
 	gopkg.in/alecthomas/kingpin.v2 v2.2.6 // indirect
 	gopkg.in/telebot.v3 v3.3.8 // indirect
-	k8s.io/apimachinery v0.31.1 // indirect
-	k8s.io/client-go v0.31.0 // indirect
+	k8s.io/apimachinery v0.31.3 // indirect
+	k8s.io/client-go v0.31.3 // indirect
+	k8s.io/klog/v2 v2.130.1 // indirect
 	k8s.io/utils v0.0.0-20240711033017-18e509b52bc8 // indirect
 )
 

go.sum

@@ -934,6 +934,8 @@ github.com/cncf/xds/go v0.0.0-20230607035331-e9ce68804cb4/go.mod h1:eXthEFrGJvWH
 github.com/cncf/xds/go v0.0.0-20240423153145-555b57ec207b/go.mod h1:W+zGtBO5Y1IgJhy4+A9GOqVhqLpfZi+vwmdNXUehLA8=
 github.com/cncf/xds/go v0.0.0-20240905190251-b4127c9b8d78 h1:QVw89YDxXxEe+l8gU8ETbOasdwEV+avkR75ZzsVV9WI=
 github.com/cncf/xds/go v0.0.0-20240905190251-b4127c9b8d78/go.mod h1:W+zGtBO5Y1IgJhy4+A9GOqVhqLpfZi+vwmdNXUehLA8=
+github.com/coder/quartz v0.1.2 h1:PVhc9sJimTdKd3VbygXtS4826EOCpB1fXoRlLnCrE+s=
+github.com/coder/quartz v0.1.2/go.mod h1:vsiCc+AHViMKH2CQpGIpFgdHIEQsxwm8yCscqKmzbRA=
 github.com/coreos/go-semver v0.3.0 h1:wkHLiw0WNATZnSG7epLsujiMCgPAc9xhjJ4tgnAxmfM=
 github.com/coreos/go-semver v0.3.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
 github.com/coreos/go-systemd/v22 v22.3.2/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
@@ -980,6 +982,10 @@ github.com/efficientgo/e2e v0.14.1-0.20230710114240-c316eb95ae5b h1:8VX23BNufsa4
 github.com/efficientgo/e2e v0.14.1-0.20230710114240-c316eb95ae5b/go.mod h1:plsKU0YHE9uX+7utvr7SiDtVBSHJyEfHRO4UnUgDmts=
 github.com/efficientgo/tools/extkingpin v0.0.0-20220817170617-6c25e3b627dd h1:VaYzzXeUbC5fVheskcKVNOyJMEYD+HgrJNzIAg/mRIM=
 github.com/efficientgo/tools/extkingpin v0.0.0-20220817170617-6c25e3b627dd/go.mod h1:ZV0utlglOczUWv3ih2AbqPSoLoFzdplUYxwV62eZi6Q=
+github.com/emersion/go-sasl v0.0.0-20200509203442-7bfe0ed36a21 h1:OJyUGMJTzHTd1XQp98QTaHernxMYzRaOasRir9hUlFQ=
+github.com/emersion/go-sasl v0.0.0-20200509203442-7bfe0ed36a21/go.mod h1:iL2twTeMvZnrg54ZoPDNfJaJaqy0xIQFuBdrLsmspwQ=
+github.com/emersion/go-smtp v0.21.3 h1:7uVwagE8iPYE48WhNsng3RRpCUpFvNl39JGNSIyGVMY=
+github.com/emersion/go-smtp v0.21.3/go.mod h1:qm27SGYgoIPRot6ubfQ/GpiPy/g3PaZAVRxiO/sDUgQ=
 github.com/emicklei/go-restful/v3 v3.11.0 h1:rAQeMHw1c7zTmncogyy8VvRZwtkmkZ4FxERmMY4rD+g=
 github.com/emicklei/go-restful/v3 v3.11.0/go.mod h1:6n3XBCmQQb25CM2LCACGz8ukIrRry+4bhvbpWn3mrbc=
 github.com/envoyproxy/go-control-plane v0.10.2-0.20220325020618-49ff273808a1/go.mod h1:KJwIaB5Mv44NWtYuAOFCVOjcI94vtpEz2JU/D2v6IjE=
@@ -1334,8 +1340,8 @@ github.com/imdario/mergo v0.3.11 h1:3tnifQM4i+fbajXKBHXWEH+KvNHqojZ778UH75j3bGA=
 github.com/imdario/mergo v0.3.11/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
 github.com/ionos-cloud/sdk-go/v6 v6.0.4 h1:4LoWeM7WtcDqYDjlntqQ3fD6XaENlCw2YqiVWkHQbNA=
 github.com/ionos-cloud/sdk-go/v6 v6.0.4/go.mod h1:UE3V/2DjnqD5doOqtjYqzJRMpI1RiwrvuuSEPX1pdnk=
-github.com/jessevdk/go-flags v1.5.0 h1:1jKYvbxEjfUl0fmqTCOfonvskHHXMjBySTLW4y9LFvc=
-github.com/jessevdk/go-flags v1.5.0/go.mod h1:Fw0T6WPc1dYxT4mKEZRfG5kJhaTDP9pj1c2EWnYs/m4=
+github.com/jessevdk/go-flags v1.6.1 h1:Cvu5U8UGrLay1rZfv/zP7iLpSHGUZ/Ou68T0iX1bBK4=
+github.com/jessevdk/go-flags v1.6.1/go.mod h1:Mk8T1hIAWpOiJiHa9rJASDK2UGWji0EuPGBnNLMooyc=
 github.com/jmespath/go-jmespath v0.4.0 h1:BEgLn5cpjn8UN1mAw4NjwDrS35OdebyEtFe+9YPoQUg=
 github.com/jmespath/go-jmespath v0.4.0/go.mod h1:T8mJZnbsbmF+m6zOOFylbeCJqk5+pHWvzYPziyZiYoo=
 github.com/jmespath/go-jmespath/internal/testify v1.5.1 h1:shLQSRRSCCPj3f2gpwzGwWFoC7ycTf1rcQZHOlsJ6N8=
@@ -1541,8 +1547,8 @@ github.com/posener/complete v1.1.1/go.mod h1:em0nMJCgc9GFtwrmVmEMR/ZL6WyhyjMBndr
 github.com/posener/complete v1.2.3/go.mod h1:WZIdtGGp+qx0sLrYKtIRAruyNpv6hFCicSgv7Sy7s/s=
 github.com/prometheus-community/prom-label-proxy v0.8.1-0.20240127162815-c1195f9aabc0 h1:owfYHh79h8Y5HvNMGyww+DaVwo10CKiRW1RQrrZzIwg=
 github.com/prometheus-community/prom-label-proxy v0.8.1-0.20240127162815-c1195f9aabc0/go.mod h1:rT989D4UtOcfd9tVqIZRVIM8rkg+9XbreBjFNEKXvVI=
-github.com/prometheus/alertmanager v0.27.0 h1:V6nTa2J5V4s8TG4C4HtrBP/WNSebCCTYGGv4qecA/+I=
-github.com/prometheus/alertmanager v0.27.0/go.mod h1:8Ia/R3urPmbzJ8OsdvmZvIprDwvwmYCmUbwBL+jlPOE=
+github.com/prometheus/alertmanager v0.28.0 h1:sLN+6HhZet8hrbmGHLAHWsTXgZSVCvq9Ix3U3wvivqc=
+github.com/prometheus/alertmanager v0.28.0/go.mod h1:/okSnb2LlodbMlRoOWQEKtqI/coOo2NKZDm2Hu9QHLQ=
 github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
 github.com/prometheus/client_golang v1.0.0/go.mod h1:db9x61etRT2tGnBNRi70OPL5FsnadC4Ky3P0J6CfImo=
 github.com/prometheus/client_golang v1.4.0/go.mod h1:e9GMxYsXl05ICDXkRhurwBS4Q3OK1iX/F2sw+iXX5zU=
@@ -1594,8 +1600,8 @@ github.com/rogpeppe/go-internal v1.6.1/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTE
 github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
 github.com/rogpeppe/go-internal v1.13.1 h1:KvO1DLK/DRN07sQ1LQKScxyZJuNnedQ5/wKSR38lUII=
 github.com/rogpeppe/go-internal v1.13.1/go.mod h1:uMEvuHeurkdAXX61udpOXGD/AzZDWNMNyH2VO9fmH0o=
-github.com/rs/cors v1.11.0 h1:0B9GE/r9Bc2UxRMMtymBkHTenPkHDv0CW4Y98GBY+po=
-github.com/rs/cors v1.11.0/go.mod h1:XyqrcTp5zjWr1wsJ8PIRZssZ8b/WMcMf71DJnit4EMU=
+github.com/rs/cors v1.11.1 h1:eU3gRzXLRK57F5rKMGMZURNdIG4EoAmX8k94r9wXWHA=
+github.com/rs/cors v1.11.1/go.mod h1:XyqrcTp5zjWr1wsJ8PIRZssZ8b/WMcMf71DJnit4EMU=
 github.com/rs/xid v1.6.0 h1:fV591PaemRlL6JfRxGDEPl69wICngIQ3shQtzfy2gxU=
 github.com/rs/xid v1.6.0/go.mod h1:7XoLgs4eV+QndskICGsho+ADou8ySMSjJKDIan90Nz0=
 github.com/ruudk/golang-pdf417 v0.0.0-20181029194003-1af4ab5afa58/go.mod h1:6lfFZQK844Gfx8o5WFuvpxWRwnSoipWe/p622j1v06w=
@@ -1614,8 +1620,8 @@ github.com/sercand/kuberesolver/v5 v5.1.1 h1:CYH+d67G0sGBj7q5wLK61yzqJJ8gLLC8aep
 github.com/sercand/kuberesolver/v5 v5.1.1/go.mod h1:Fs1KbKhVRnB2aDWN12NjKCB+RgYMWZJ294T3BtmVCpQ=
 github.com/shurcooL/httpfs v0.0.0-20230704072500-f1e31cf0ba5c h1:aqg5Vm5dwtvL+YgDpBcK1ITf3o96N/K7/wsRXQnUTEs=
 github.com/shurcooL/httpfs v0.0.0-20230704072500-f1e31cf0ba5c/go.mod h1:owqhoLW1qZoYLZzLnBw+QkPP9WZnjlSWihhxAJC1+/M=
-github.com/shurcooL/vfsgen v0.0.0-20200824052919-0d455de96546 h1:pXY9qYc/MP5zdvqWEUH6SjNiu7VhSjuVFTFiTcphaLU=
-github.com/shurcooL/vfsgen v0.0.0-20200824052919-0d455de96546/go.mod h1:TrYk7fJVaAttu97ZZKrO9UbRa8izdowaMIZcxYMbVaw=
+github.com/shurcooL/vfsgen v0.0.0-20230704071429-0000e147ea92 h1:OfRzdxCzDhp+rsKWXuOO2I/quKMJ/+TQwVbIP/gltZg=
+github.com/shurcooL/vfsgen v0.0.0-20230704071429-0000e147ea92/go.mod h1:7/OT02F6S6I7v6WXb+IjhMuZEYfH/RJ5RwEWnEo5BMg=
 github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
 github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
 github.com/sirupsen/logrus v1.6.0/go.mod h1:7uNnSEd1DgxDLC74fIahvMZmmYsHGZGEOFrfsX/uA88=
@@ -1672,6 +1678,8 @@ github.com/thanos-io/thanos v0.37.3-0.20250212101700-346d18bb0f80 h1:mOCRYn9SLBW
 github.com/thanos-io/thanos v0.37.3-0.20250212101700-346d18bb0f80/go.mod h1:Y7D8la8B5rpzRVKq2HCR4hbYZ4LGroSPqIJjtizgQg8=
 github.com/tjhop/slog-gokit v0.1.2 h1:pmQI4SvU9h4gA0vIQsdhJQSqQg4mOmsPykG2/PM3j1I=
 github.com/tjhop/slog-gokit v0.1.2/go.mod h1:8fhlcp8C8ELbg3GCyKv06tgt4B5sDq2P1r2DQAu1HuM=
+github.com/trivago/tgo v1.0.7 h1:uaWH/XIy9aWYWpjm2CU3RpcqZXmX2ysQ9/Go+d9gyrM=
+github.com/trivago/tgo v1.0.7/go.mod h1:w4dpD+3tzNIIiIfkWWa85w5/B77tlvdZckQ+6PkFnhc=
 github.com/tv42/httpunix v0.0.0-20150427012821-b75d8614f926/go.mod h1:9ESjWnEqriFuLhtthL60Sar/7RFoluCcXsuvEwTV5KM=
 github.com/uber/jaeger-client-go v2.30.0+incompatible h1:D6wyKGCecFaSRUpo8lCVbaOOb6ThwMmTEbhRwtKR97o=
 github.com/uber/jaeger-client-go v2.30.0+incompatible/go.mod h1:WVhlPFC8FDjOFMMWRy2pZqQJSXxYSwNYOkTr/Z6d3Kk=
@@ -2520,8 +2528,8 @@ gopkg.in/inf.v0 v0.9.1 h1:73M5CoZyi3ZLMOyDlQh031Cx6N9NDJ2Vvfl76EDAgDc=
 gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
 gopkg.in/ini.v1 v1.67.0 h1:Dgnx+6+nfE+IfzjUEISNeydPJh9AXNNsWbGP9KzCsOA=
 gopkg.in/ini.v1 v1.67.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
-gopkg.in/telebot.v3 v3.2.1 h1:3I4LohaAyJBiivGmkfB+CiVu7QFOWkuZ4+KHgO/G3rs=
-gopkg.in/telebot.v3 v3.2.1/go.mod h1:GJKwwWqp9nSkIVN51eRKU78aB5f5OnQuWdwiIZfPbko=
+gopkg.in/telebot.v3 v3.3.8 h1:uVDGjak9l824FN9YARWUHMsiNZnlohAVwUycw21k6t8=
+gopkg.in/telebot.v3 v3.3.8/go.mod h1:1mlbqcLTVSfK9dx7fdp+Nb5HZsy4LLPtpZTKmwhwtzM=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

integration/backward_compatibility_test.go

@@ -5,17 +5,21 @@ package integration
 
 import (
 	"fmt"
+	"path"
+	"strconv"
 	"testing"
 	"time"
 
 	"github.com/prometheus/common/model"
 	"github.com/prometheus/prometheus/model/labels"
+	"github.com/prometheus/prometheus/prompb"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
 	"github.com/cortexproject/cortex/integration/e2e"
 	e2edb "github.com/cortexproject/cortex/integration/e2e/db"
 	"github.com/cortexproject/cortex/integration/e2ecortex"
+	"github.com/cortexproject/cortex/pkg/storage/tsdb"
 )
 
 type versionsImagesFlags struct {
@@ -118,6 +122,118 @@ func TestNewDistributorsCanPushToOldIngestersWithReplication(t *testing.T) {
 	}
 }
 
+// Test cortex which uses Prometheus v3.x can support holt_winters function
+func TestCanSupportHoltWintersFunc(t *testing.T) {
+	s, err := e2e.NewScenario(networkName)
+	require.NoError(t, err)
+	defer s.Close()
+
+	// Start dependencies.
+	consul := e2edb.NewConsulWithName("consul")
+	require.NoError(t, s.StartAndWaitReady(consul))
+
+	flags := mergeFlags(
+		AlertmanagerLocalFlags(),
+		map[string]string{
+			"-store.engine":                                     blocksStorageEngine,
+			"-blocks-storage.backend":                           "filesystem",
+			"-blocks-storage.tsdb.head-compaction-interval":     "4m",
+			"-blocks-storage.tsdb.block-ranges-period":          "2h",
+			"-blocks-storage.tsdb.ship-interval":                "1h",
+			"-blocks-storage.bucket-store.sync-interval":        "15m",
+			"-blocks-storage.tsdb.retention-period":             "2h",
+			"-blocks-storage.bucket-store.index-cache.backend":  tsdb.IndexCacheBackendInMemory,
+			"-blocks-storage.bucket-store.bucket-index.enabled": "true",
+			"-querier.query-store-for-labels-enabled":           "true",
+			// Ingester.
+			"-ring.store":      "consul",
+			"-consul.hostname": consul.NetworkHTTPEndpoint(),
+			// Distributor.
+			"-distributor.replication-factor": "1",
+			// Store-gateway.
+			"-store-gateway.sharding-enabled": "false",
+			// alert manager
+			"-alertmanager.web.external-url": "http://localhost/alertmanager",
+			// enable experimental promQL funcs
+			"-querier.enable-promql-experimental-functions": "true",
+		},
+	)
+	// make alert manager config dir
+	require.NoError(t, writeFileToSharedDir(s, "alertmanager_configs", []byte{}))
+
+	path := path.Join(s.SharedDir(), "cortex-1")
+
+	flags = mergeFlags(flags, map[string]string{"-blocks-storage.filesystem.dir": path})
+	// Start Cortex replicas.
+	cortex := e2ecortex.NewSingleBinary("cortex", flags, "")
+	require.NoError(t, s.StartAndWaitReady(cortex))
+
+	// Wait until Cortex replicas have updated the ring state.
+	require.NoError(t, cortex.WaitSumMetrics(e2e.Equals(float64(512)), "cortex_ring_tokens_total"))
+
+	c, err := e2ecortex.NewClient(cortex.HTTPEndpoint(), cortex.HTTPEndpoint(), "", "", "user-1")
+	require.NoError(t, err)
+
+	now := time.Now()
+	// Push some series to Cortex.
+	start := now.Add(-time.Minute * 120)
+	end := now
+	scrapeInterval := 30 * time.Second
+
+	numSeries := 10
+	numSamples := 240
+	serieses := make([]prompb.TimeSeries, numSeries)
+	lbls := make([]labels.Labels, numSeries)
+	for i := 0; i < numSeries; i++ {
+		series := e2e.GenerateSeriesWithSamples("test_series", start, scrapeInterval, i*numSamples, numSamples, prompb.Label{Name: "job", Value: "test"}, prompb.Label{Name: "series", Value: strconv.Itoa(i)})
+		serieses[i] = series
+
+		builder := labels.NewBuilder(labels.EmptyLabels())
+		for _, lbl := range series.Labels {
+			builder.Set(lbl.Name, lbl.Value)
+		}
+		lbls[i] = builder.Labels()
+	}
+
+	res, err := c.Push(serieses)
+	require.NoError(t, err)
+	require.Equal(t, 200, res.StatusCode)
+
+	// Test holt_winters range query
+	hQuery := "holt_winters(test_series[2h], 0.5, 0.5)"
+	hRangeResult, err := c.QueryRange(hQuery, start, end, scrapeInterval)
+	require.NoError(t, err)
+	hMatrix, ok := hRangeResult.(model.Matrix)
+	require.True(t, ok)
+	require.True(t, hMatrix.Len() > 0)
+
+	// Test holt_winters instant query
+	hInstantResult, err := c.Query(hQuery, now)
+	require.NoError(t, err)
+	hVector, ok := hInstantResult.(model.Vector)
+	require.True(t, ok)
+	require.True(t, hVector.Len() > 0)
+
+	// Test double_exponential_smoothing range query
+	dQuery := "double_exponential_smoothing(test_series[2h], 0.5, 0.5)"
+	dRangeResult, err := c.QueryRange(dQuery, start, end, scrapeInterval)
+	require.NoError(t, err)
+	dMatrix, ok := dRangeResult.(model.Matrix)
+	require.True(t, ok)
+	require.True(t, dMatrix.Len() > 0)
+
+	// Test double_exponential_smoothing instant query
+	dInstantResult, err := c.Query(dQuery, now)
+	require.NoError(t, err)
+	dVector, ok := dInstantResult.(model.Vector)
+	require.True(t, ok)
+	require.True(t, dVector.Len() > 0)
+
+	// compare lengths of query results
+	require.True(t, hMatrix.Len() == dMatrix.Len())
+	require.True(t, hVector.Len() == dVector.Len())
+}
+
 func blocksStorageFlagsWithFlushOnShutdown() map[string]string {
 	return mergeFlags(BlocksStorageFlags(), map[string]string{
 		"-blocks-storage.tsdb.flush-blocks-on-shutdown": "true",

pkg/configs/userconfig/config_test.go

@@ -16,7 +16,6 @@ import (
 	"github.com/prometheus/prometheus/rules"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-	"github.com/thanos-io/thanos/pkg/logutil"
 	"gopkg.in/yaml.v3"
 
 	util_log "github.com/cortexproject/cortex/pkg/util/log"
@@ -96,7 +95,7 @@ func TestParseLegacyAlerts(t *testing.T) {
 		nil,
 		"",
 		true,
-		logutil.GoKitLogToSlog(log.With(util_log.Logger, "alert", "TestAlert")),
+		util_log.GoKitLogToSlog(log.With(util_log.Logger, "alert", "TestAlert")),
 	)
 
 	for i, tc := range []struct {

pkg/querier/querier.go

@@ -206,6 +206,13 @@ func New(cfg Config, limits *validation.Overrides, distributor Distributor, stor
 
 	// set EnableExperimentalFunctions
 	parser.EnableExperimentalFunctions = cfg.EnablePromQLExperimentalFunctions
+	// The holt_winters function is renamed to double_exponential_smoothing and has been experimental since Prometheus v3. (https://github.com/prometheus/prometheus/pull/14930)
+	// The cortex supports holt_winters for users using this function.
+	holtWinters := *parser.Functions["double_exponential_smoothing"]
+	holtWinters.Experimental = false
+	holtWinters.Name = "holt_winters"
+	parser.Functions["holt_winters"] = &holtWinters
+	promql.FunctionCalls["holt_winters"] = promql.FunctionCalls["double_exponential_smoothing"]
 
 	var queryEngine promql.QueryEngine
 	opts := promql.EngineOpts{

pkg/querier/tripperware/roundtrip.go

@@ -27,6 +27,7 @@ import (
 	"github.com/opentracing/opentracing-go"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promauto"
+	"github.com/prometheus/prometheus/promql"
 	"github.com/prometheus/prometheus/promql/parser"
 	"github.com/thanos-io/thanos/pkg/querysharding"
 	"github.com/weaveworks/common/httpgrpc"
@@ -121,6 +122,13 @@ func NewQueryTripperware(
 
 	// set EnableExperimentalFunctions
 	parser.EnableExperimentalFunctions = enablePromQLExperimentalFunctions
+	// The holt_winters function is renamed to double_exponential_smoothing and has been experimental since Prometheus v3. (https://github.com/prometheus/prometheus/pull/14930)
+	// The cortex supports holt_winters for users using this function.
+	holtWinters := *parser.Functions["double_exponential_smoothing"]
+	holtWinters.Experimental = false
+	holtWinters.Name = "holt_winters"
+	parser.Functions["holt_winters"] = &holtWinters
+	promql.FunctionCalls["holt_winters"] = promql.FunctionCalls["double_exponential_smoothing"]
 
 	// Per tenant query metrics.
 	queriesPerTenant := promauto.With(registerer).NewCounterVec(prometheus.CounterOpts{

pkg/querier/tripperware/roundtrip_test.go

@@ -88,7 +88,6 @@ func (m mockMiddleware) Do(_ context.Context, req Request) (Response, error) {
 }
 
 func TestRoundTrip(t *testing.T) {
-	t.Parallel()
 	s := httptest.NewServer(
 		http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			_, err := w.Write([]byte("bar"))