Return Sampler as pointer (#1666)

Signed-off-by: Jude Wang <judew@uber.com>
jaegertracing · Jul 17, 2019 · d3ee676 · d3ee676
1 parent e567725
commit d3ee676
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/storage/spanstore/downsampling_writer.go b/storage/spanstore/downsampling_writer.go
@@ -48,7 +48,7 @@ type downsamplingWriterMetrics struct {
 type DownsamplingWriter struct {
 	spanWriter Writer
 	metrics    downsamplingWriterMetrics
-	sampler    Sampler
+	sampler    *Sampler
 }
 
 // DownsamplingOptions contains the options for constructing a DownsamplingWriter.
@@ -96,7 +96,7 @@ type Sampler struct {
 }
 
 // NewSampler creates SamplingExecutor
-func NewSampler(ratio float64, hashSalt string) Sampler {
+func NewSampler(ratio float64, hashSalt string) *Sampler {
 	if hashSalt == "" {
 		hashSalt = defaultHashSalt
 	}
@@ -111,7 +111,7 @@ func NewSampler(ratio float64, hashSalt string) Sampler {
 			}
 		},
 	}
-	return Sampler{
+	return &Sampler{
 		threshold:    calculateThreshold(ratio),
 		hasherPool:   pool,
 		lengthOfSalt: len(hashSaltBytes),