5 Commits (c6949539ebc7db0cb0ec2a7cccd74b37eaece524)

Author	SHA1	Message	Date
Cyril Tovena	86b119ac7b	fix: Add copyString function to symbolizer to avoid retaining memory (#13146)	2 years ago
Ed Welch	4c88be0ef2	chore: update loki modules for 3.0 release (#12433) ... Signed-off-by: Edward Welch <edward.welch@grafana.com>	2 years ago
Vladyslav Diachenko	00a3c5b026	renamed `non indexed labels` feature to `structured metadata` (#10432) ... Loki team has made a decision to rename the feature because the new name is more precise. --------- Signed-off-by: Vladyslav Diachenko <vlad.diachenko@grafana.com> Co-authored-by: Salva Corts <salva.corts@grafana.com>	2 years ago
Salva Corts	48660d5cd5	Fix bugs in non-indexed-labels (#10142) ... **What this PR does / why we need it**: This PR fixes some bugs discovered while setting the default chunk format yo _V4_ and the default head format to _unordered with non-indexed labels_. Note that this PR doesn't change the defaults, but fixes some bugs that would prevent us from changing them in the future. The bugs it fixes are: - Index out-of-range panic when symbols' labels are empty and we do a Lookup. **Test added**. - When applying retention, new chunks wouldn't contain non-indexed labels (caused by https://github.com/grafana/loki/pull/10090). **Test added**. - New chunks would fail to serialize non-indexed labels when applying retention because the head format would be the [dummy one (ordered)][1] [(used here via `c.headFmt`)][2]. **Cannot test unless we change the default chunk/head format** but tested manually. **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](d10549e3ec) [1]: 457f2e6ec0/pkg/chunkenc/memchunk.go (L375) [2]: 24fd566833/pkg/chunkenc/memchunk.go (L1088-L1095)	2 years ago
Sandeep Sukhani	9b554bba8d	implementing string interning to optimize resource usage for storing and processing non-indexed labels (#10044) ... **What this PR does / why we need it**: In PR #9700, we added support for storing non-indexed labels in chunks. This PR optimizes resource usage for storing and processing non-indexed labels by doing string interning. We will store deduped label names and values as a list in chunks in the newly added non-indexed labels section. The labels would then be referenced in blocks by their index(called symbols). Additionally, I have started the convention of writing lengths of sections with their offsets within chunks, making it easier to introduce new sections. The section offsets and lengths would be stored at the end of the chunk, similar to [TOC](https://ganeshvernekar.com/blog/prometheus-tsdb-persistent-block-and-its-index/#a-toc) in TSDB. **Checklist** - [x] Tests updated	2 years ago