Change default sampling rate from 100% to 0%

This changes the default parent-based trace sampling rate from 100% to 0%. Due to the high QPS etcd can handle, having 100% trace sampling leads to very high resource usage. Defaulting to 0% means that only already-sampled traces will be sampled in etcd. Fixes etcd-io#14310 Signed-off-by: Mike Dame <[email protected]>
openshift-cherrypick-robot · Oct 7, 2022 · 661a3f6 · 661a3f6
1 parent 746b884
commit 661a3f6
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/server/embed/etcd.go b/server/embed/etcd.go
@@ -851,6 +851,7 @@ func (e *Etcd) setupTracing(ctx context.Context) (exporter tracesdk.SpanExporter
 			tracesdk.NewTracerProvider(
 				tracesdk.WithBatcher(exporter),
 				tracesdk.WithResource(res),
+				tracesdk.WithSampler(tracesdk.ParentBased(tracesdk.NeverSample())),
 			),
 		),
 	)