Prometheus: Chore - Remove incorrect FrameType from exemplar frame (#57695)

pkg/tsdb/prometheus/buffered/time_series_query.go

@@ -598,7 +598,11 @@ func exemplarToDataFrames(response []apiv1.ExemplarQueryResult, query *Prometheu
 		dataFields = append(dataFields, data.NewField(label, nil, labelsVector[label]))
 	}
 
-	return append(frames, newDataFrame("exemplar", "exemplar", dataFields...))
+	newFrame := newDataFrame("exemplar", "exemplar", dataFields...)
+	// unset on exemplars (ugly but this client will be deprecated soon)
+	newFrame.Meta.Type = ""
+
+	return append(frames, newFrame)
 }
 
 func sortedLabels(labelsVector map[string][]string) []string {

pkg/tsdb/prometheus/buffered/time_series_query_test.go

@@ -706,7 +706,11 @@ func TestPrometheus_parseTimeSeriesResponse(t *testing.T) {
 			data.NewField("traceID", map[string]string{}, []string{"test1", "test2"}),
 			data.NewField("userID", map[string]string{}, []string{"", "test3"}),
 		}
-		if diff := cmp.Diff(newDataFrame("exemplar", "exemplar", fields...), res[0], data.FrameTestCompareOptions()...); diff != "" {
+
+		newFrame := newDataFrame("exemplar", "exemplar", fields...)
+		newFrame.Meta.Type = ""
+
+		if diff := cmp.Diff(newFrame, res[0], data.FrameTestCompareOptions()...); diff != "" {
 			t.Errorf("Result mismatch (-want +got):\n%s", diff)
 		}
 	})

pkg/tsdb/prometheus/querydata/response.go

@@ -160,7 +160,6 @@ func processExemplars(q *models.Query, dr *backend.DataResponse) *backend.DataRe
 		// copy the frame metadata to the new exemplar frame
 		exemplarFrame.Meta = frame.Meta
 		exemplarFrame.RefID = frame.RefID
-		frame.Meta.Type = data.FrameTypeTimeSeriesMany
 
 		step := time.Duration(frame.Fields[0].Config.Interval) * time.Millisecond
 		seriesLabels := getSeriesLabels(frame)

pkg/tsdb/prometheus/testdata/exemplar.result.golden.jsonc

@@ -1,7 +1,6 @@
 //  🌟 This was machine generated.  Do not edit. 🌟
 //  
 //  Frame[0] {
-//      "type": "timeseries-many",
 //      "custom": {
 //          "resultType": "exemplar"
 //      },
@@ -34,7 +33,6 @@
       "schema": {
         "name": "exemplar",
         "meta": {
-          "type": "timeseries-many",
           "custom": {
             "resultType": "exemplar"
           },

pkg/tsdb/prometheus/testdata/exemplar.result.streaming-wide.golden.jsonc

@@ -1,7 +1,6 @@
 //  🌟 This was machine generated.  Do not edit. 🌟
 //  
 //  Frame[0] {
-//      "type": "timeseries-many",
 //      "custom": {
 //          "resultType": "exemplar"
 //      },
@@ -34,7 +33,6 @@
       "schema": {
         "name": "exemplar",
         "meta": {
-          "type": "timeseries-many",
           "custom": {
             "resultType": "exemplar"
           },