use bottom bits

open-telemetry · Dec 23, 2022 · 57736df · 57736df
1 parent a724cf8
commit 57736df
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/sdk/trace/sampling.go b/sdk/trace/sampling.go
@@ -81,7 +81,7 @@ type traceIDRatioSampler struct {
 
 func (ts traceIDRatioSampler) ShouldSample(p SamplingParameters) SamplingResult {
 	psc := trace.SpanContextFromContext(p.ParentContext)
-	x := binary.BigEndian.Uint64(p.TraceID[0:8]) >> 1
+	x := binary.BigEndian.Uint64(p.TraceID[8:16]) >> 1
 	if x < ts.traceIDUpperBound {
 		return SamplingResult{
 			Decision:   RecordAndSample,