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Ed Welch c8760f31e2 Loki: Remove validation of matchers when performing label values lookup. (#8224) ... the curren validation fails on != style matchers when they are the only matchers present, requiring at least one `=` matcher. However for looking up label values in TSDB, by design it uses a `desired_label != ""` style query, as such it should be allowed to also include these as matchers. Additional matchers on this Label Value queries typically only exist with LBAC headers adding additional labels. Signed-off-by: Edward Welch <edward.welch@grafana.com> **What this PR does / why we need it**: **Which issue(s) this PR fixes**: Fixes #<issue number> **Special notes for your reviewer**: **Checklist** - [ ] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [ ] Documentation added - [ ] Tests updated - [ ] `CHANGELOG.md` updated - [ ] Changes that require user attention or interaction to upgrade are documented in `docs/sources/upgrading/_index.md` Signed-off-by: Edward Welch <edward.welch@grafana.com> Signed-off-by: Christian Haudum <christian.haudum@gmail.com> Co-authored-by: Owen Diehl <ow.diehl@gmail.com> Co-authored-by: Danny Kopping <danny.kopping@grafana.com> Co-authored-by: Christian Haudum <christian.haudum@gmail.com>		3 years ago
..
index	Prevent IndexShipper from leaking mutex accesses. (#7548)	4 years ago
indexgateway	Loki: Remove validation of matchers when performing label values lookup. (#8224)	3 years ago
testutil	generic index compactor (#6537)	4 years ago
util	log panic full stack in boltdb recover block (#7410)	4 years ago
metrics.go	create smaller unique files from boltdb shipper and other code refactorings (#2261)	6 years ago
shipper_index_client.go	Fix typo in flags definitions (#7257)	4 years ago