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Bryan Boreham f89a51fde8 Tracing: elide small traces for Stats call (#10308) ... **What this PR does / why we need it**: At work I see a lot of traces getting data dropped due to being tens of megabytes in size. Looking at what was captured, I see many many repeats of these four spans: <img width="1070" alt="image" src="https://github.com/grafana/loki/assets/8125524/4268e664-6910-49bb-8f68-69b139a5a66b"> Events on the parent trace are cheaper and, for small operations like this, just as useful. Where there was an event line I added a `function` field matching the previous span name. For `storeEntry.Stats()` I didn't add an event line as it doesn't seem to do very much. But please correct me; I'm not hugely familiar with the Loki codebase. **Special notes for your reviewer**: **Checklist** - [x] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - NA Documentation added - NA Tests updated - [x] `CHANGELOG.md` updated - NA If the change is worth mentioning in the release notes, add `add-to-release-notes` label - NA Changes that require user attention or interaction to upgrade are documented in `docs/sources/setup/upgrade/_index.md` - NA For Helm chart changes bump the Helm chart version in `production/helm/loki/Chart.yaml` and update `production/helm/loki/CHANGELOG.md` and `production/helm/loki/README.md`. [Example PR](d10549e3ec)		3 years ago
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client	…
index	…
wal	Update chunk and head fmt to v4 (non-indexed labels) (#10242)	3 years ago
checkpoint.go	…
checkpoint.pb.go	…
checkpoint.proto	…
checkpoint_test.go	…
chunk_test.go	Update chunk and head fmt to v4 (non-indexed labels) (#10242)	3 years ago
encoding_test.go	Update chunk and head fmt to v4 (non-indexed labels) (#10242)	3 years ago
flush.go	…
flush_test.go	Update chunk and head fmt to v4 (non-indexed labels) (#10242)	3 years ago
ingester.go	allows filter-only matchers in series endpoint (#10269)	3 years ago
ingester_test.go	…
instance.go	Tracing: elide small traces for Stats call (#10308)	3 years ago
instance_test.go	Return intersecting labels when aggregating volume by label (#10248)	3 years ago
limiter.go	…
limiter_test.go	…
mapper.go	…
mapper_test.go	…
metrics.go	…
recovery.go	…
recovery_test.go	…
replay_controller.go	…
replay_controller_test.go	…
stream.go	…
stream_rate_calculator.go	…
stream_rate_calculator_test.go	…
stream_test.go	Update chunk and head fmt to v4 (non-indexed labels) (#10242)	3 years ago
streams_map.go	…
streams_map_test.go	…
tailer.go	…
tailer_test.go	…
transfer.go	…
transfer_test.go	…
wal.go	…