Inject downstream accumulator. #11863
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jeschkies
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Feb 5, 2024
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| acc := newQuantileSketchAccumulator() | ||
| results, err := ev.Downstream(ctx, queries, acc) |
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This is a little annoying since we could call acc.Result. I didn't want to chan the logic too much.
chaudum
reviewed
Feb 8, 2024
| return results | ||
| } | ||
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| // TODO: delete |
chaudum
approved these changes
Feb 8, 2024
Co-authored-by: Christian Haudum <[email protected]>
rhnasc
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Apr 12, 2024
**What this PR does / why we need it**: We inject the downstream accumulator into the downstreamer instead of constructing it on the first arrival of the first result. Since we know the query type before executing the first query we can pass the correct accumulator. This will allow us to define special `topk` or `sum by` accumulators in the future. **Checklist** - [ ] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [ ] Documentation added - [ ] Tests updated - [ ] `CHANGELOG.md` updated - [ ] If the change is worth mentioning in the release notes, add `add-to-release-notes` label - [ ] Changes that require user attention or interaction to upgrade are documented in `docs/sources/setup/upgrade/_index.md` - [ ] 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](grafana@d10549e) - [ ] If the change is deprecating or removing a configuration option, update the `deprecated-config.yaml` and `deleted-config.yaml` files respectively in the `tools/deprecated-config-checker` directory. [Example PR](grafana@0d4416a) --------- Co-authored-by: Christian Haudum <[email protected]>
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What this PR does / why we need it:
We inject the downstream accumulator into the downstreamer instead of constructing it on the first arrival of the first result.
Since we know the query type before executing the first query we can pass the correct accumulator. This will allow us to define special
topkorsum byaccumulators in the future.Checklist
CONTRIBUTING.mdguide (required)CHANGELOG.mdupdatedadd-to-release-noteslabeldocs/sources/setup/upgrade/_index.mdproduction/helm/loki/Chart.yamland updateproduction/helm/loki/CHANGELOG.mdandproduction/helm/loki/README.md. Example PRdeprecated-config.yamlanddeleted-config.yamlfiles respectively in thetools/deprecated-config-checkerdirectory. Example PR