tracing: fixed panic because of nil sampler (thanos-io#6066)

* fixed panic because of nil sampler Signed-off-by: Vasiliy Rumyantsev <[email protected]> * added CHANGELOG entry Signed-off-by: Vasiliy Rumyantsev <[email protected]> Signed-off-by: Vasiliy Rumyantsev <[email protected]>
ngraham20 · Apr 17, 2023 · 4f34de7 · 4f34de7
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -23,6 +23,7 @@ We use *breaking :warning:* to mark changes that are not backward compatible (re
 
 - [#5995](https://github.com/thanos-io/thanos/pull/5995) Sidecar: Loads the TLS certificate during startup.
 - [#6044](https://github.com/thanos-io/thanos/pull/6044) Receive: mark ouf of window errors as conflict, if out-of-window samples ingestion is activated
+- [#6066](https://github.com/thanos-io/thanos/pull/6066) Tracing: fixed panic because of nil sampler
 
 ### Changed
 

diff --git a/pkg/tracing/jaeger/config_yaml.go b/pkg/tracing/jaeger/config_yaml.go
@@ -141,6 +141,7 @@ func getSampler(config Config) tracesdk.Sampler {
 		sampler = jaegerremote.New(config.ServiceName, remoteOptions...)
 	// Fallback always to default (rate limiting).
 	case SamplerTypeRateLimiting:
+		fallthrough
 	default:
 		// The same config options are applicable to both remote and rate-limiting samplers.
 		remoteOptions := getRemoteOptions(config)