Remove skipping span creation by checking parent spans (#2980)

* Remove skipping span creation by checking parent spans

* Update CHANGELOG

Author: XSAM

CHANGELOG.md

@@ -1,3 +1,12 @@
+## Unreleased
+
+### Changed
+
+* `go-redis` won't skip span creation if the parent spans is not recording. ([#2980](https://github.com/redis/go-redis/issues/2980))
+  Users can use the OpenTelemetry sampler to control the sampling behavior.
+  For instance, you can use the `ParentBased(NeverSample())` sampler from `go.opentelemetry.io/otel/sdk/trace` to keep
+  a similar behavior (drop orphan spans) of `go-redis` as before.
+
 ## [9.0.5](https://github.com/redis/go-redis/compare/v9.0.4...v9.0.5) (2023-05-29)
 
 

extra/redisotel/tracing.go

@@ -91,10 +91,6 @@ func newTracingHook(connString string, opts ...TracingOption) *tracingHook {
 
 func (th *tracingHook) DialHook(hook redis.DialHook) redis.DialHook {
 	return func(ctx context.Context, network, addr string) (net.Conn, error) {
-		if !trace.SpanFromContext(ctx).IsRecording() {
-			return hook(ctx, network, addr)
-		}
-
 		ctx, span := th.conf.tracer.Start(ctx, "redis.dial", th.spanOpts...)
 		defer span.End()
 
@@ -109,10 +105,6 @@ func (th *tracingHook) DialHook(hook redis.DialHook) redis.DialHook {
 
 func (th *tracingHook) ProcessHook(hook redis.ProcessHook) redis.ProcessHook {
 	return func(ctx context.Context, cmd redis.Cmder) error {
-		if !trace.SpanFromContext(ctx).IsRecording() {
-			return hook(ctx, cmd)
-		}
-
 		fn, file, line := funcFileLine("github.com/redis/go-redis")
 
 		attrs := make([]attribute.KeyValue, 0, 8)
@@ -145,10 +137,6 @@ func (th *tracingHook) ProcessPipelineHook(
 	hook redis.ProcessPipelineHook,
 ) redis.ProcessPipelineHook {
 	return func(ctx context.Context, cmds []redis.Cmder) error {
-		if !trace.SpanFromContext(ctx).IsRecording() {
-			return hook(ctx, cmds)
-		}
-
 		fn, file, line := funcFileLine("github.com/redis/go-redis")
 
 		attrs := make([]attribute.KeyValue, 0, 8)