Prometheus: Fix concurrency issue with exemplar sampler initialization (#61281)

2023-01-11 08:27:47 -05:00
parent f2ffce4351
commit 19ca93d5ce
2 changed files with 7 additions and 7 deletions
@@ -43,7 +43,7 @@ type QueryData struct {
 	URL                string
 	TimeInterval       string
 	enableWideSeries   bool
-	exemplarSampler    exemplar.Sampler
+	exemplarSampler    func() exemplar.Sampler
 }

 func New(
@@ -67,10 +67,10 @@ func New(
 	promClient := client.NewClient(httpClient, httpMethod, settings.URL)

 	// standard deviation sampler is the default for backwards compatibility
-	exemplarSampler := exemplar.NewStandardDeviationSampler()
+	exemplarSampler := exemplar.NewStandardDeviationSampler

 	if features.IsEnabled(featuremgmt.FlagDisablePrometheusExemplarSampling) {
-		exemplarSampler = exemplar.NewNoOpSampler()
+		exemplarSampler = exemplar.NewNoOpSampler
 	}

 	return &QueryData{