app/vmselect: accept focusLabel query arg at /api/v1/status/tsdb

This allows filling the seriesCountByFocusLabelValue list in the /api/v1/status/tsdb response
with label values for the specified focusLabel, which contain the highest number of time series.

TODO: add this to Cardinality explorer at VMUI - https://docs.victoriametrics.com/#cardinality-explorer

README.md

@@ -268,7 +268,8 @@ See the [example VMUI at VictoriaMetrics playground](https://play.victoriametric
 VictoriaMetrics provides an ability to explore time series cardinality at `cardinality` tab in [vmui](#vmui) in the following ways:
 
 - To identify metric names with the highest number of series.
-- To idnetify labels with the highest number of series.
+- To identify labels with the highest number of series.
+- To identify values with the highest number of series for the selected label (aka `focusLabel`).
 - To identify label=name pairs with the highest number of series.
 - To identify labels with the highest number of unique values.
 
@@ -1441,6 +1442,7 @@ VictoriaMetrics returns TSDB stats at `/api/v1/status/tsdb` page in the way simi
 
 * `topN=N` where `N` is the number of top entries to return in the response. By default top 10 entries are returned.
 * `date=YYYY-MM-DD` where `YYYY-MM-DD` is the date for collecting the stats. By default the stats is collected for the current day. Pass `date=1970-01-01` in order to collect global stats across all the days.
+* `focusLabel=LABEL_NAME` returns label values with the highest number of time series for the given `LABEL_NAME` in the `seriesCountByFocusLabelValue` list.
 * `match[]=SELECTOR` where `SELECTOR` is an arbitrary [time series selector](https://prometheus.io/docs/prometheus/latest/querying/basics/#time-series-selectors) for series to take into account during stats calculation. By default all the series are taken into account.
 * `extra_label=LABEL=VALUE`. See [these docs](#prometheus-querying-api-enhancements) for more details.
 

app/vmselect/netstorage/netstorage.go

@@ -764,25 +764,11 @@ func GetTagValueSuffixes(qt *querytracer.Tracer, tr storage.TimeRange, tagKey, t
 	return suffixes, nil
 }
 
-// GetTSDBStatusForDate returns tsdb status according to https://prometheus.io/docs/prometheus/latest/querying/api/#tsdb-stats
+// GetTSDBStatus returns tsdb status according to https://prometheus.io/docs/prometheus/latest/querying/api/#tsdb-stats
-func GetTSDBStatusForDate(qt *querytracer.Tracer, deadline searchutils.Deadline, date uint64, topN, maxMetrics int) (*storage.TSDBStatus, error) {
-	qt = qt.NewChild("get tsdb stats for date=%d, topN=%d", date, topN)
-	defer qt.Done()
-	if deadline.Exceeded() {
-		return nil, fmt.Errorf("timeout exceeded before starting the query processing: %s", deadline.String())
-	}
-	status, err := vmstorage.GetTSDBStatusForDate(qt, date, topN, maxMetrics, deadline.Deadline())
-	if err != nil {
-		return nil, fmt.Errorf("error during tsdb status request: %w", err)
-	}
-	return status, nil
-}
-
-// GetTSDBStatusWithFilters returns tsdb status according to https://prometheus.io/docs/prometheus/latest/querying/api/#tsdb-stats
 //
 // It accepts aribtrary filters on time series in sq.
-func GetTSDBStatusWithFilters(qt *querytracer.Tracer, deadline searchutils.Deadline, sq *storage.SearchQuery, topN int) (*storage.TSDBStatus, error) {
+func GetTSDBStatus(qt *querytracer.Tracer, sq *storage.SearchQuery, focusLabel string, topN int, deadline searchutils.Deadline) (*storage.TSDBStatus, error) {
-	qt = qt.NewChild("get tsdb stats: %s, topN=%d", sq, topN)
+	qt = qt.NewChild("get tsdb stats: %s, focusLabel=%q, topN=%d", sq, focusLabel, topN)
 	defer qt.Done()
 	if deadline.Exceeded() {
 		return nil, fmt.Errorf("timeout exceeded before starting the query processing: %s", deadline.String())
@@ -796,9 +782,9 @@ func GetTSDBStatusWithFilters(qt *querytracer.Tracer, deadline searchutils.Deadl
 		return nil, err
 	}
 	date := uint64(tr.MinTimestamp) / (3600 * 24 * 1000)
-	status, err := vmstorage.GetTSDBStatusWithFiltersForDate(qt, tfss, date, topN, sq.MaxMetrics, deadline.Deadline())
+	status, err := vmstorage.GetTSDBStatus(qt, tfss, date, focusLabel, topN, sq.MaxMetrics, deadline.Deadline())
 	if err != nil {
-		return nil, fmt.Errorf("error during tsdb status with filters request: %w", err)
+		return nil, fmt.Errorf("error during tsdb status request: %w", err)
 	}
 	return status, nil
 }

app/vmselect/prometheus/prometheus.go

@@ -490,12 +490,17 @@ func TSDBStatusHandler(qt *querytracer.Tracer, startTime time.Time, w http.Respo
 	date := fasttime.UnixDate()
 	dateStr := r.FormValue("date")
 	if len(dateStr) > 0 {
-		t, err := time.Parse("2006-01-02", dateStr)
+		if dateStr == "0" {
-		if err != nil {
+			date = 0
-			return fmt.Errorf("cannot parse `date` arg %q: %w", dateStr, err)
+		} else {
+			t, err := time.Parse("2006-01-02", dateStr)
+			if err != nil {
+				return fmt.Errorf("cannot parse `date` arg %q: %w", dateStr, err)
+			}
+			date = uint64(t.Unix()) / secsPerDay
 		}
-		date = uint64(t.Unix()) / secsPerDay
 	}
+	focusLabel := r.FormValue("focusLabel")
 	topN := 10
 	topNStr := r.FormValue("topN")
 	if len(topNStr) > 0 {
@@ -511,18 +516,14 @@ func TSDBStatusHandler(qt *querytracer.Tracer, startTime time.Time, w http.Respo
 		}
 		topN = n
 	}
-	var status *storage.TSDBStatus
+	start := int64(date*secsPerDay) * 1000
-	if len(cp.filterss) == 0 {
+	end := int64((date+1)*secsPerDay)*1000 - 1
-		status, err = netstorage.GetTSDBStatusForDate(qt, cp.deadline, date, topN, *maxTSDBStatusSeries)
+	sq := storage.NewSearchQuery(start, end, cp.filterss, *maxTSDBStatusSeries)
-		if err != nil {
+	status, err := netstorage.GetTSDBStatus(qt, sq, focusLabel, topN, cp.deadline)
-			return fmt.Errorf(`cannot obtain tsdb status for date=%d, topN=%d: %w`, date, topN, err)
+	if err != nil {
-		}
+		return fmt.Errorf("cannot obtain tsdb stats: %w", err)
-	} else {
-		status, err = tsdbStatusWithMatches(qt, cp.filterss, date, topN, *maxTSDBStatusSeries, cp.deadline)
-		if err != nil {
-			return fmt.Errorf("cannot obtain tsdb status with matches for date=%d, topN=%d: %w", date, topN, err)
-		}
 	}
+
 	w.Header().Set("Content-Type", "application/json")
 	bw := bufferedwriter.Get(w)
 	defer bufferedwriter.Put(bw)
@@ -533,17 +534,6 @@ func TSDBStatusHandler(qt *querytracer.Tracer, startTime time.Time, w http.Respo
 	return nil
 }
 
-func tsdbStatusWithMatches(qt *querytracer.Tracer, filterss [][]storage.TagFilter, date uint64, topN, maxMetrics int, deadline searchutils.Deadline) (*storage.TSDBStatus, error) {
-	start := int64(date*secsPerDay) * 1000
-	end := int64(date*secsPerDay+secsPerDay) * 1000
-	sq := storage.NewSearchQuery(start, end, filterss, maxMetrics)
-	status, err := netstorage.GetTSDBStatusWithFilters(qt, deadline, sq, topN)
-	if err != nil {
-		return nil, err
-	}
-	return status, nil
-}
-
 var tsdbStatusDuration = metrics.NewSummary(`vm_request_duration_seconds{path="/api/v1/status/tsdb"}`)
 
 // LabelsHandler processes /api/v1/labels request.

app/vmselect/prometheus/tsdb_status_response.qtpl

@@ -13,6 +13,7 @@ TSDBStatusResponse generates response for /api/v1/status/tsdb .
 		"totalLabelValuePairs": {%dul= status.TotalLabelValuePairs %},
 		"seriesCountByMetricName":{%= tsdbStatusEntries(status.SeriesCountByMetricName) %},
 		"seriesCountByLabelName":{%= tsdbStatusEntries(status.SeriesCountByLabelName) %},
+		"seriesCountByFocusLabelValue":{%= tsdbStatusEntries(status.SeriesCountByFocusLabelValue) %},
 		"seriesCountByLabelValuePair":{%= tsdbStatusEntries(status.SeriesCountByLabelValuePair) %},
 		"labelValueCountByLabelName":{%= tsdbStatusEntries(status.LabelValueCountByLabelName) %}
 	}

app/vmselect/prometheus/tsdb_status_response.qtpl.go

@@ -44,102 +44,106 @@ func StreamTSDBStatusResponse(qw422016 *qt422016.Writer, status *storage.TSDBSta
 //line app/vmselect/prometheus/tsdb_status_response.qtpl:15
 	streamtsdbStatusEntries(qw422016, status.SeriesCountByLabelName)
 //line app/vmselect/prometheus/tsdb_status_response.qtpl:15
+	qw422016.N().S(`,"seriesCountByFocusLabelValue":`)
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:16
+	streamtsdbStatusEntries(qw422016, status.SeriesCountByFocusLabelValue)
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:16
 	qw422016.N().S(`,"seriesCountByLabelValuePair":`)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:16
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:17
 	streamtsdbStatusEntries(qw422016, status.SeriesCountByLabelValuePair)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:16
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:17
 	qw422016.N().S(`,"labelValueCountByLabelName":`)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:17
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:18
 	streamtsdbStatusEntries(qw422016, status.LabelValueCountByLabelName)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:17
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:18
 	qw422016.N().S(`}`)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:19
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:20
 	qt.Done()
 
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:20
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:21
 	streamdumpQueryTrace(qw422016, qt)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:20
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:21
 	qw422016.N().S(`}`)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:22
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:23
 }
 
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:22
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:23
 func WriteTSDBStatusResponse(qq422016 qtio422016.Writer, status *storage.TSDBStatus, qt *querytracer.Tracer) {
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:22
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:23
 	qw422016 := qt422016.AcquireWriter(qq422016)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:22
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:23
 	StreamTSDBStatusResponse(qw422016, status, qt)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:22
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:23
 	qt422016.ReleaseWriter(qw422016)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:22
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:23
 }
 
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:22
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:23
 func TSDBStatusResponse(status *storage.TSDBStatus, qt *querytracer.Tracer) string {
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:22
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:23
 	qb422016 := qt422016.AcquireByteBuffer()
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:22
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:23
 	WriteTSDBStatusResponse(qb422016, status, qt)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:22
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:23
 	qs422016 := string(qb422016.B)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:22
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:23
 	qt422016.ReleaseByteBuffer(qb422016)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:22
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:23
 	return qs422016
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:22
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:23
 }
 
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:24
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:25
 func streamtsdbStatusEntries(qw422016 *qt422016.Writer, a []storage.TopHeapEntry) {
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:24
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:25
 	qw422016.N().S(`[`)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:26
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:27
 	for i, e := range a {
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:26
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:27
 		qw422016.N().S(`{"name":`)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:28
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:29
 		qw422016.N().Q(e.Name)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:28
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:29
 		qw422016.N().S(`,"value":`)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:29
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:30
 		qw422016.N().D(int(e.Count))
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:29
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:30
 		qw422016.N().S(`}`)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:31
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:32
 		if i+1 < len(a) {
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:31
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:32
 			qw422016.N().S(`,`)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:31
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:32
 		}
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:32
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:33
 	}
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:32
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:33
 	qw422016.N().S(`]`)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:34
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:35
 }
 
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:34
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:35
 func writetsdbStatusEntries(qq422016 qtio422016.Writer, a []storage.TopHeapEntry) {
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:34
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:35
 	qw422016 := qt422016.AcquireWriter(qq422016)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:34
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:35
 	streamtsdbStatusEntries(qw422016, a)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:34
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:35
 	qt422016.ReleaseWriter(qw422016)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:34
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:35
 }
 
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:34
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:35
 func tsdbStatusEntries(a []storage.TopHeapEntry) string {
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:34
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:35
 	qb422016 := qt422016.AcquireByteBuffer()
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:34
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:35
 	writetsdbStatusEntries(qb422016, a)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:34
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:35
 	qs422016 := string(qb422016.B)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:34
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:35
 	qt422016.ReleaseByteBuffer(qb422016)
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:34
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:35
 	return qs422016
-//line app/vmselect/prometheus/tsdb_status_response.qtpl:34
+//line app/vmselect/prometheus/tsdb_status_response.qtpl:35
 }

app/vmstorage/main.go

@@ -215,18 +215,10 @@ func SearchGraphitePaths(tr storage.TimeRange, query []byte, maxPaths int, deadl
 	return paths, err
 }
 
-// GetTSDBStatusForDate returns TSDB status for the given date.
+// GetTSDBStatus returns TSDB status for given filters on the given date.
-func GetTSDBStatusForDate(qt *querytracer.Tracer, date uint64, topN, maxMetrics int, deadline uint64) (*storage.TSDBStatus, error) {
+func GetTSDBStatus(qt *querytracer.Tracer, tfss []*storage.TagFilters, date uint64, focusLabel string, topN, maxMetrics int, deadline uint64) (*storage.TSDBStatus, error) {
 	WG.Add(1)
-	status, err := Storage.GetTSDBStatusWithFiltersForDate(qt, nil, date, topN, maxMetrics, deadline)
+	status, err := Storage.GetTSDBStatus(qt, tfss, date, focusLabel, topN, maxMetrics, deadline)
-	WG.Done()
-	return status, err
-}
-
-// GetTSDBStatusWithFiltersForDate returns TSDB status for given filters on the given date.
-func GetTSDBStatusWithFiltersForDate(qt *querytracer.Tracer, tfss []*storage.TagFilters, date uint64, topN, maxMetrics int, deadline uint64) (*storage.TSDBStatus, error) {
-	WG.Add(1)
-	status, err := Storage.GetTSDBStatusWithFiltersForDate(qt, tfss, date, topN, maxMetrics, deadline)
 	WG.Done()
 	return status, err
 }

docs/Single-server-VictoriaMetrics.md

@@ -272,7 +272,8 @@ See the [example VMUI at VictoriaMetrics playground](https://play.victoriametric
 VictoriaMetrics provides an ability to explore time series cardinality at `cardinality` tab in [vmui](#vmui) in the following ways:
 
 - To identify metric names with the highest number of series.
-- To idnetify labels with the highest number of series.
+- To identify labels with the highest number of series.
+- To identify values with the highest number of series for the selected label (aka `focusLabel`).
 - To identify label=name pairs with the highest number of series.
 - To identify labels with the highest number of unique values.
 
@@ -1445,6 +1446,7 @@ VictoriaMetrics returns TSDB stats at `/api/v1/status/tsdb` page in the way simi
 
 * `topN=N` where `N` is the number of top entries to return in the response. By default top 10 entries are returned.
 * `date=YYYY-MM-DD` where `YYYY-MM-DD` is the date for collecting the stats. By default the stats is collected for the current day. Pass `date=1970-01-01` in order to collect global stats across all the days.
+* `focusLabel=LABEL_NAME` returns label values with the highest number of time series for the given `LABEL_NAME` in the `seriesCountByFocusLabelValue` list.
 * `match[]=SELECTOR` where `SELECTOR` is an arbitrary [time series selector](https://prometheus.io/docs/prometheus/latest/querying/basics/#time-series-selectors) for series to take into account during stats calculation. By default all the series are taken into account.
 * `extra_label=LABEL=VALUE`. See [these docs](#prometheus-querying-api-enhancements) for more details.
 

lib/storage/index_db.go

@@ -1239,11 +1239,11 @@ func (is *indexSearch) getSeriesCount() (uint64, error) {
 	return metricIDsLen, nil
 }
 
-// GetTSDBStatusWithFiltersForDate returns topN entries for tsdb status for the given tfss and the given date.
+// GetTSDBStatus returns topN entries for tsdb status for the given tfss, date and focusLabel.
-func (db *indexDB) GetTSDBStatusWithFiltersForDate(qt *querytracer.Tracer, tfss []*TagFilters, date uint64, topN, maxMetrics int, deadline uint64) (*TSDBStatus, error) {
+func (db *indexDB) GetTSDBStatus(qt *querytracer.Tracer, tfss []*TagFilters, date uint64, focusLabel string, topN, maxMetrics int, deadline uint64) (*TSDBStatus, error) {
 	qtChild := qt.NewChild("collect tsdb stats in the current indexdb")
 	is := db.getIndexSearch(deadline)
-	status, err := is.getTSDBStatusWithFiltersForDate(qtChild, tfss, date, topN, maxMetrics)
+	status, err := is.getTSDBStatus(qtChild, tfss, date, focusLabel, topN, maxMetrics)
 	qtChild.Done()
 	db.putIndexSearch(is)
 	if err != nil {
@@ -1255,7 +1255,7 @@ func (db *indexDB) GetTSDBStatusWithFiltersForDate(qt *querytracer.Tracer, tfss
 	ok := db.doExtDB(func(extDB *indexDB) {
 		qtChild := qt.NewChild("collect tsdb stats in the previous indexdb")
 		is := extDB.getIndexSearch(deadline)
-		status, err = is.getTSDBStatusWithFiltersForDate(qtChild, tfss, date, topN, maxMetrics)
+		status, err = is.getTSDBStatus(qtChild, tfss, date, focusLabel, topN, maxMetrics)
 		qtChild.Done()
 		extDB.putIndexSearch(is)
 	})
@@ -1265,8 +1265,8 @@ func (db *indexDB) GetTSDBStatusWithFiltersForDate(qt *querytracer.Tracer, tfss
 	return status, nil
 }
 
-// getTSDBStatusWithFiltersForDate returns topN entries for tsdb status for the given tfss and the given date.
+// getTSDBStatus returns topN entries for tsdb status for the given tfss, date and focusLabel.
-func (is *indexSearch) getTSDBStatusWithFiltersForDate(qt *querytracer.Tracer, tfss []*TagFilters, date uint64, topN, maxMetrics int) (*TSDBStatus, error) {
+func (is *indexSearch) getTSDBStatus(qt *querytracer.Tracer, tfss []*TagFilters, date uint64, focusLabel string, topN, maxMetrics int) (*TSDBStatus, error) {
 	filter, err := is.searchMetricIDsWithFiltersOnDate(qt, tfss, date, maxMetrics)
 	if err != nil {
 		return nil, err
@@ -1281,12 +1281,14 @@ func (is *indexSearch) getTSDBStatusWithFiltersForDate(qt *querytracer.Tracer, t
 	dmis := is.db.s.getDeletedMetricIDs()
 	thSeriesCountByMetricName := newTopHeap(topN)
 	thSeriesCountByLabelName := newTopHeap(topN)
+	thSeriesCountByFocusLabelValue := newTopHeap(topN)
 	thSeriesCountByLabelValuePair := newTopHeap(topN)
 	thLabelValueCountByLabelName := newTopHeap(topN)
 	var tmp, prevLabelName, prevLabelValuePair []byte
 	var labelValueCountByLabelName, seriesCountByLabelValuePair uint64
 	var totalSeries, labelSeries, totalLabelValuePairs uint64
 	nameEqualBytes := []byte("__name__=")
+	focusLabelEqualBytes := []byte(focusLabel + "=")
 
 	loopsPaceLimiter := 0
 	nsPrefixExpected := byte(nsPrefixDateTagToMetricIDs)
@@ -1358,6 +1360,9 @@ func (is *indexSearch) getTSDBStatusWithFiltersForDate(qt *querytracer.Tracer, t
 			if bytes.HasPrefix(prevLabelValuePair, nameEqualBytes) {
 				thSeriesCountByMetricName.push(prevLabelValuePair[len(nameEqualBytes):], seriesCountByLabelValuePair)
 			}
+			if bytes.HasPrefix(prevLabelValuePair, focusLabelEqualBytes) {
+				thSeriesCountByFocusLabelValue.push(prevLabelValuePair[len(focusLabelEqualBytes):], seriesCountByLabelValuePair)
+			}
 			seriesCountByLabelValuePair = 0
 			labelValueCountByLabelName++
 			prevLabelValuePair = append(prevLabelValuePair[:0], labelValuePair...)
@@ -1377,13 +1382,17 @@ func (is *indexSearch) getTSDBStatusWithFiltersForDate(qt *querytracer.Tracer, t
 	if bytes.HasPrefix(prevLabelValuePair, nameEqualBytes) {
 		thSeriesCountByMetricName.push(prevLabelValuePair[len(nameEqualBytes):], seriesCountByLabelValuePair)
 	}
+	if bytes.HasPrefix(prevLabelValuePair, focusLabelEqualBytes) {
+		thSeriesCountByFocusLabelValue.push(prevLabelValuePair[len(focusLabelEqualBytes):], seriesCountByLabelValuePair)
+	}
 	status := &TSDBStatus{
-		TotalSeries:                 totalSeries,
+		TotalSeries:                  totalSeries,
-		TotalLabelValuePairs:        totalLabelValuePairs,
+		TotalLabelValuePairs:         totalLabelValuePairs,
-		SeriesCountByMetricName:     thSeriesCountByMetricName.getSortedResult(),
+		SeriesCountByMetricName:      thSeriesCountByMetricName.getSortedResult(),
-		SeriesCountByLabelName:      thSeriesCountByLabelName.getSortedResult(),
+		SeriesCountByLabelName:       thSeriesCountByLabelName.getSortedResult(),
-		SeriesCountByLabelValuePair: thSeriesCountByLabelValuePair.getSortedResult(),
+		SeriesCountByFocusLabelValue: thSeriesCountByFocusLabelValue.getSortedResult(),
-		LabelValueCountByLabelName:  thLabelValueCountByLabelName.getSortedResult(),
+		SeriesCountByLabelValuePair:  thSeriesCountByLabelValuePair.getSortedResult(),
+		LabelValueCountByLabelName:   thLabelValueCountByLabelName.getSortedResult(),
 	}
 	return status, nil
 }
@@ -1392,12 +1401,13 @@ func (is *indexSearch) getTSDBStatusWithFiltersForDate(qt *querytracer.Tracer, t
 //
 // See https://prometheus.io/docs/prometheus/latest/querying/api/#tsdb-stats
 type TSDBStatus struct {
-	TotalSeries                 uint64
+	TotalSeries                  uint64
-	TotalLabelValuePairs        uint64
+	TotalLabelValuePairs         uint64
-	SeriesCountByMetricName     []TopHeapEntry
+	SeriesCountByMetricName      []TopHeapEntry
-	SeriesCountByLabelName      []TopHeapEntry
+	SeriesCountByLabelName       []TopHeapEntry
-	SeriesCountByLabelValuePair []TopHeapEntry
+	SeriesCountByFocusLabelValue []TopHeapEntry
-	LabelValueCountByLabelName  []TopHeapEntry
+	SeriesCountByLabelValuePair  []TopHeapEntry
+	LabelValueCountByLabelName   []TopHeapEntry
 }
 
 func (status *TSDBStatus) hasEntries() bool {

lib/storage/index_db_test.go

@@ -1807,10 +1807,10 @@ func TestSearchTSIDWithTimeRange(t *testing.T) {
 		t.Fatalf("expected %d time series for all days, got %d time series", metricsPerDay*days, len(matchedTSIDs))
 	}
 
-	// Check GetTSDBStatusWithFiltersForDate with nil filters.
+	// Check GetTSDBStatus with nil filters.
-	status, err := db.GetTSDBStatusWithFiltersForDate(nil, nil, baseDate, 5, 1e6, noDeadline)
+	status, err := db.GetTSDBStatus(nil, nil, baseDate, "day", 5, 1e6, noDeadline)
 	if err != nil {
-		t.Fatalf("error in GetTSDBStatusWithFiltersForDate with nil filters: %s", err)
+		t.Fatalf("error in GetTSDBStatus with nil filters: %s", err)
 	}
 	if !status.hasEntries() {
 		t.Fatalf("expecting non-empty TSDB status")
@@ -1845,6 +1845,15 @@ func TestSearchTSIDWithTimeRange(t *testing.T) {
 	if !reflect.DeepEqual(status.SeriesCountByLabelName, expectedSeriesCountByLabelName) {
 		t.Fatalf("unexpected SeriesCountByLabelName;\ngot\n%v\nwant\n%v", status.SeriesCountByLabelName, expectedSeriesCountByLabelName)
 	}
+	expectedSeriesCountByFocusLabelValue := []TopHeapEntry{
+		{
+			Name:  "0",
+			Count: 1000,
+		},
+	}
+	if !reflect.DeepEqual(status.SeriesCountByFocusLabelValue, expectedSeriesCountByFocusLabelValue) {
+		t.Fatalf("unexpected SeriesCountByFocusLabelValue;\ngot\n%v\nwant\n%v", status.SeriesCountByFocusLabelValue, expectedSeriesCountByFocusLabelValue)
+	}
 	expectedLabelValueCountByLabelName := []TopHeapEntry{
 		{
 			Name:  "uniqueid",
@@ -1900,14 +1909,14 @@ func TestSearchTSIDWithTimeRange(t *testing.T) {
 		t.Fatalf("unexpected TotalLabelValuePairs; got %d; want %d", status.TotalLabelValuePairs, expectedLabelValuePairs)
 	}
 
-	// Check GetTSDBStatusWithFiltersForDate with non-nil filter, which matches all the series
+	// Check GetTSDBStatus with non-nil filter, which matches all the series
 	tfs = NewTagFilters()
 	if err := tfs.Add([]byte("day"), []byte("0"), false, false); err != nil {
 		t.Fatalf("cannot add filter: %s", err)
 	}
-	status, err = db.GetTSDBStatusWithFiltersForDate(nil, []*TagFilters{tfs}, baseDate, 5, 1e6, noDeadline)
+	status, err = db.GetTSDBStatus(nil, []*TagFilters{tfs}, baseDate, "", 5, 1e6, noDeadline)
 	if err != nil {
-		t.Fatalf("error in GetTSDBStatusWithFiltersForDate: %s", err)
+		t.Fatalf("error in GetTSDBStatus: %s", err)
 	}
 	if !status.hasEntries() {
 		t.Fatalf("expecting non-empty TSDB status")
@@ -1930,10 +1939,10 @@ func TestSearchTSIDWithTimeRange(t *testing.T) {
 		t.Fatalf("unexpected TotalLabelValuePairs; got %d; want %d", status.TotalLabelValuePairs, expectedLabelValuePairs)
 	}
 
-	// Check GetTSDBStatusWithFiltersOnDate, which matches all the series on a global time range
+	// Check GetTSDBStatus, which matches all the series on a global time range
-	status, err = db.GetTSDBStatusWithFiltersForDate(nil, nil, 0, 5, 1e6, noDeadline)
+	status, err = db.GetTSDBStatus(nil, nil, 0, "day", 5, 1e6, noDeadline)
 	if err != nil {
-		t.Fatalf("error in GetTSDBStatusWithFiltersForDate: %s", err)
+		t.Fatalf("error in GetTSDBStatus: %s", err)
 	}
 	if !status.hasEntries() {
 		t.Fatalf("expecting non-empty TSDB status")
@@ -1955,15 +1964,40 @@ func TestSearchTSIDWithTimeRange(t *testing.T) {
 	if status.TotalLabelValuePairs != expectedLabelValuePairs {
 		t.Fatalf("unexpected TotalLabelValuePairs; got %d; want %d", status.TotalLabelValuePairs, expectedLabelValuePairs)
 	}
+	expectedSeriesCountByFocusLabelValue = []TopHeapEntry{
+		{
+			Name:  "0",
+			Count: 1000,
+		},
+		{
+			Name:  "1",
+			Count: 1000,
+		},
+		{
+			Name:  "2",
+			Count: 1000,
+		},
+		{
+			Name:  "3",
+			Count: 1000,
+		},
+		{
+			Name:  "4",
+			Count: 1000,
+		},
+	}
+	if !reflect.DeepEqual(status.SeriesCountByFocusLabelValue, expectedSeriesCountByFocusLabelValue) {
+		t.Fatalf("unexpected SeriesCountByFocusLabelValue;\ngot\n%v\nwant\n%v", status.SeriesCountByFocusLabelValue, expectedSeriesCountByFocusLabelValue)
+	}
 
-	// Check GetTSDBStatusWithFiltersForDate with non-nil filter, which matches only 3 series
+	// Check GetTSDBStatus with non-nil filter, which matches only 3 series
 	tfs = NewTagFilters()
 	if err := tfs.Add([]byte("uniqueid"), []byte("0|1|3"), false, true); err != nil {
 		t.Fatalf("cannot add filter: %s", err)
 	}
-	status, err = db.GetTSDBStatusWithFiltersForDate(nil, []*TagFilters{tfs}, baseDate, 5, 1e6, noDeadline)
+	status, err = db.GetTSDBStatus(nil, []*TagFilters{tfs}, baseDate, "", 5, 1e6, noDeadline)
 	if err != nil {
-		t.Fatalf("error in GetTSDBStatusWithFiltersForDate: %s", err)
+		t.Fatalf("error in GetTSDBStatus: %s", err)
 	}
 	if !status.hasEntries() {
 		t.Fatalf("expecting non-empty TSDB status")
@@ -1986,10 +2020,10 @@ func TestSearchTSIDWithTimeRange(t *testing.T) {
 		t.Fatalf("unexpected TotalLabelValuePairs; got %d; want %d", status.TotalLabelValuePairs, expectedLabelValuePairs)
 	}
 
-	// Check GetTSDBStatusWithFiltersForDate with non-nil filter on global time range, which matches only 15 series
+	// Check GetTSDBStatus with non-nil filter on global time range, which matches only 15 series
-	status, err = db.GetTSDBStatusWithFiltersForDate(nil, []*TagFilters{tfs}, 0, 5, 1e6, noDeadline)
+	status, err = db.GetTSDBStatus(nil, []*TagFilters{tfs}, 0, "", 5, 1e6, noDeadline)
 	if err != nil {
-		t.Fatalf("error in GetTSDBStatusWithFiltersForDate: %s", err)
+		t.Fatalf("error in GetTSDBStatus: %s", err)
 	}
 	if !status.hasEntries() {
 		t.Fatalf("expecting non-empty TSDB status")

lib/storage/storage.go

@@ -1467,9 +1467,9 @@ func (s *Storage) GetSeriesCount(deadline uint64) (uint64, error) {
 	return s.idb().GetSeriesCount(deadline)
 }
 
-// GetTSDBStatusWithFiltersForDate returns TSDB status data for /api/v1/status/tsdb with match[] filters.
+// GetTSDBStatus returns TSDB status data for /api/v1/status/tsdb
-func (s *Storage) GetTSDBStatusWithFiltersForDate(qt *querytracer.Tracer, tfss []*TagFilters, date uint64, topN, maxMetrics int, deadline uint64) (*TSDBStatus, error) {
+func (s *Storage) GetTSDBStatus(qt *querytracer.Tracer, tfss []*TagFilters, date uint64, focusLabel string, topN, maxMetrics int, deadline uint64) (*TSDBStatus, error) {
-	return s.idb().GetTSDBStatusWithFiltersForDate(qt, tfss, date, topN, maxMetrics, deadline)
+	return s.idb().GetTSDBStatus(qt, tfss, date, focusLabel, topN, maxMetrics, deadline)
 }
 
 // MetricRow is a metric to insert into storage.