Loki 3.7.0 release notes

3.7.0 (2026-03-26)

⚠ BREAKING CHANGES

engine: Make scheduler aware of total compute capacity (#19876)
parsed labels should not override structured metadata (#19991)
engine: Share worker threads across all scheduler connections (#20229)

Features

ability to send query context for limit enforcement (#19900) (1a66d2d)
add downscalePermittedFunc to check downscale is permitted (#20171) (c0c27b3)
add gauge to track in-flight bytes (#20091) (23ef8ec)
add histogram loki_dataobj_consumer_flush_duration_seconds (#20304) (5a5e90e)
add loki health command (#20313) (ef69cfd)
add metric to track flush failures (#20399) (ed4f27e)
Add new dataobj builder flush criteria (#20323) (498656b)
Add partition state to consumption lag metric (#19912) (91d4eb6)
add prepare downscale handler (#20007) (677b2ec)
add processed records metric (#20191) (333da73)
add race tolerance to query-tee (#20228) (014520a)
Add resolved policy to blocked and enforced label error (#19826) (48d13d1)
add segmentation keys and resolver (#19927) (c853f2c)
add support for cancelation to copy and sort (#20370) (6a8b879)
Add support for storing chunk deletion markers in object storage instead of local disk (#19689) (856c11d)
add support for UpdateRates RPC to distributors (#19918) (9018886)
Add UpdateRates RPC, update rates from the frontend, return no-op in the service (#19894) (e173cf4)
canary: Support passing arbitrary set of labels to use for the query (#17008) (993b3ae)
check partition state in parallel (#19884) (b8536aa)
Client side index gateway shuffle sharding (#20124) (326c7d1)
dataobj-consumer add processed bytes metric (#20303) (fba0c5d)
decouple dataobj consumers from the reader service (#20315) (c3e909d)
disambiguate metadata for better scans (#20245) (66fd9d8)
don't tee unsampled queries (#20306) (b975e48)
enable racing in the querytee (#20156) (23948c4)
Enable support for max, min, max_over_time, min_over_time for new engine (#19841) (b9a51f0)
engine: add regexp parser support for log queries (#20286) (5663f9c)
engine: delegate metastore queries to engine (#20189) (3a74fe7)
engine: implement strict and keepEmpty logfmt parsing (#19668) (01cab53)
goldfish: add endpoints for serving stored results (#19640) (e17ae2d)
goldfish: mv comparison_status to db, add stats endpoint (#19698) (c22e05c)
Handle state change lock in prepare downscale (#20141) (de092da)
helm: nameOverride now passed through helm tpl function. (#19590) (7f56fd2)
helm: Add ability to toggle grpclb port for query frontend service (#19609) (9c4f022)
helm: Add startupProbe to distributor (#20073) (5b76589)
helm: allow configuration of service trafficDistribution parameter (#19558) (55f95e3)
helm: allow set topologySpreadConstraints on singleBinary (#19534) (265601f)
helm: make loki-canary readinessProbe configurable via values.yaml (#19328) (7231766)
helm: use fsGroupChangePolicy=OnRootMismatch to speed up pod starts (#13942) (c7cec3a)
implement query splitting in the query-tee (#20039) (aab9e46)
logcli: Allow custom headers to be passed (#20231) (c524203)
lokitool: Add regex namespace filtering (#20209) (0c1561d)
metastore: metastore DI (#20253) (9be17c7)
metastore: shard sections queries over index files (#20134) (08e3c43)
metastore: use arrow for scanning and blooms (#20234) (e4ec844)
operator: add option to disable ingress (#19382) (9dc71a6)
randomly distribute requests to the ingest-limits frontend (#19840) (1605a38)
remove final flush (#20360) (3acb310)
shuffle shard on tenant rate limit (#19990) (3904c2b)
ui: proxy analyze-labels to series with org id (#19862) (e268173)
write to dataobj partitions based on segmentation key (#19946) (3a24f5d)

Bug Fixes

apply missing middlewares to query-tee (#20184) (b9c7ddd)
avoid recalculating the segmentation key hash twice (#19961) (8b78f79)
bump helm deps, publish loki-helm-test w/ release (#19939) (7e4e34e)
cd: add loki-image to needs (#19870) (a2c4ea6)
compactor file descriptor leak (#20077) (0c3dd8c)
config: migrate renovate config (#19436) (97745fe)
dataobj: Flush into multiple index objects when ErrBuilderFull (#19223) (32dbef9)
deadlock on shutdown (#20384) (272a278)
deps: update dataobj-inspect transitive deps version (#19813) (5b212b7)
deps: update module cloud.google.com/go/bigtable to v1.41.0 (main) (#20352) (6102309)
deps: update module cloud.google.com/go/pubsub to v1.50.1 (main) (#18624) (46038e4)
deps: update module cloud.google.com/go/pubsub to v2 (main) (#19803) (d47dde3)
deps: update module cloud.google.com/go/storage to v1.57.1 (main) (#19749) (7ce0bf0)
deps: update module cloud.google.com/go/storage to v1.57.2 (main) (#19893) (e342642)
deps: update module cloud.google.com/go/storage to v1.58.0 (main) (#20159) (e859215)
deps: update module cloud.google.com/go/storage to v1.59.0 (main) (#20407) (5c71db6)
deps: update module github.com/alecthomas/chroma/v2 to v2.21.1 (main) (#20353) (6ef5f5c)
deps: update module github.com/alecthomas/chroma/v2 to v2.22.0 (main) (#20409) (c64f044)
deps: update module github.com/apache/arrow-go/v18 to v18.4.1 (main) (#19750) (d76b3bf)
deps: update module github.com/apache/arrow-go/v18 to v18.5.0 (main) (#20354) (d0861a1)
deps: update module github.com/aws/aws-sdk-go-v2 to v1.39.6 (main) (#19751) (e2a5d59)
deps: update module github.com/aws/aws-sdk-go-v2 to v1.40.1 (main) (#20137) (e106809)
deps: update module github.com/aws/aws-sdk-go-v2/config to v1.31.17 (main) (#19773) (06ada46)
deps: update module github.com/aws/aws-sdk-go-v2/config to v1.31.18 (main) (#19844) (72c5d09)
deps: update module github.com/aws/aws-sdk-go-v2/config to v1.31.20 (main) (#19879) (47560eb)
deps: update module github.com/aws/aws-sdk-go-v2/config to v1.32.0 (main) (#19979) (08e7418)
deps: update module github.com/aws/aws-sdk-go-v2/config to v1.32.1 (main) (#20002) (e37d83f)
deps: update module github.com/aws/aws-sdk-go-v2/config to v1.32.2 (main) (#20059) (32f414c)
deps: update module github.com/aws/aws-sdk-go-v2/config to v1.32.3 (main) (#20138) (0d7444a)
deps: update module github.com/aws/aws-sdk-go-v2/config to v1.32.6 (main) (#20338) (6338096)
deps: update module github.com/aws/aws-sdk-go-v2/config to v1.32.7 (main) (#20401) (50ce71a)
deps: update module github.com/aws/aws-sdk-go-v2/credentials to v1.18.21 (main) (#19752) (aebeb3c)
deps: update module github.com/aws/aws-sdk-go-v2/credentials to v1.18.24 (main) (#19845) (7e78f8c)
deps: update module github.com/aws/aws-sdk-go-v2/credentials to v1.19.2 (main) (#19980) (c392438)
deps: update module github.com/aws/aws-sdk-go-v2/credentials to v1.19.6 (main) (#20339) (3f29cae)
deps: update module github.com/aws/aws-sdk-go-v2/credentials to v1.19.7 (main) (#20402) (f20228d)
deps: update module github.com/aws/aws-sdk-go-v2/service/dynamodb to v1.52.4 (main) (#19774) (b5b8dd0)
deps: update module github.com/aws/aws-sdk-go-v2/service/dynamodb to v1.52.6 (main) (#19846) (0b25758)
deps: update module github.com/aws/aws-sdk-go-v2/service/dynamodb to v1.53.1 (main) (#19981) (c45abe6)
deps: update module github.com/aws/aws-sdk-go-v2/service/dynamodb to v1.53.2 (main) (#20060) (36079fa)
deps: update module github.com/aws/aws-sdk-go-v2/service/dynamodb to v1.53.3 (main) (#20140) (bfa8c38)
deps: update module github.com/aws/aws-sdk-go-v2/service/dynamodb to v1.53.5 (main) (#20340) (6d5d21e)
deps: update module github.com/aws/aws-sdk-go-v2/service/dynamodb to v1.53.6 (main) (#20403) (31a870c)
deps: update module github.com/aws/aws-sdk-go-v2/service/s3 to v1.88.4 (main) (#19341) (0b0faf1)
deps: update module github.com/aws/aws-sdk-go-v2/service/s3 to v1.89.2 (main) (#19775) (0f37e57)
deps: update module github.com/aws/aws-sdk-go-v2/service/s3 to v1.90.0 (main) (#19785) (877a768)
deps: update module github.com/aws/aws-sdk-go-v2/service/s3 to v1.90.2 (main) (#19847) (b50f3e3)
deps: update module github.com/aws/aws-sdk-go-v2/service/s3 to v1.92.0 (main) (#19982) (db87de8)
deps: update module github.com/aws/aws-sdk-go-v2/service/s3 to v1.92.1 (main) (#20061) (a44b63c)
deps: update module github.com/aws/aws-sdk-go-v2/service/s3 to v1.93.0 (main) (#20142) (87f3b59)
deps: update module github.com/aws/aws-sdk-go-v2/service/s3 to v1.95.0 (main) (#20355) (d98d48b)
deps: update module github.com/aws/aws-sdk-go-v2/service/s3 to v1.95.1 (main) (#20406) (c7c1411)
deps: update module github.com/aws/smithy-go to v1.23.2 (main) (#19753) (61b8049)
deps: update module github.com/aws/smithy-go to v1.24.0 (main) (#20117) (b0efa70)
deps: update module github.com/axiomhq/hyperloglog to v0.2.6 (main) (#20341) (4469f82)
deps: update module github.com/baidubce/bce-sdk-go to v0.9.251 (main) (#19754) (7257d31)
deps: update module github.com/baidubce/bce-sdk-go to v0.9.252 (main) (#19972) (c4c5ed7)
deps: update module github.com/baidubce/bce-sdk-go to v0.9.253 (main) (#20125) (d28862b)
deps: update module github.com/baidubce/bce-sdk-go to v0.9.256 (main) (#20342) (69e6254)
deps: update module github.com/bits-and-blooms/bloom/v3 to v3.7.1 (main) (#19755) (af47e1f)
deps: update module github.com/bmatcuk/doublestar/v4 to v4.9.2 (main) (#20418) (078dc94)
deps: update module github.com/coder/quartz to v0.3.0 (main) (#19786) (6f784f9)
deps: update module github.com/docker/docker to v28.5.2+incompatible (main) (#19756) (1007ee4)
deps: update module github.com/gocql/gocql to v2 (main) (#19794) (898b6d2)
deps: update module github.com/google/renameio/v2 to v2.0.1 (main) (#19935) (f943b39)
deps: update module github.com/google/renameio/v2 to v2.0.2 (main) (#20411) (cc43074)
deps: update module github.com/grafana/loki/v3 to v3.5.8 (main) (#19757) (7c0921c)
deps: update module github.com/grafana/loki/v3 to v3.6.0 (main) (#19943) (2d00410)
deps: update module github.com/grafana/loki/v3 to v3.6.1 (main) (#19993) (116aa1c)
deps: update module github.com/grafana/loki/v3 to v3.6.2 (main) (#20057) (b4f6138)
deps: update module github.com/grafana/loki/v3 to v3.6.3 (main) (#20343) (d1ae7a1)
deps: update module github.com/grpc-ecosystem/go-grpc-middleware/v2 to v2.3.3 (main) (#19758) (8133da9)
deps: update module github.com/hashicorp/consul/api to v1.33.0 (main) (#19788) (e417259)
deps: update module github.com/ibm/go-sdk-core/v5 to v5.21.1 (main) (#19950) (cd408bc)
deps: update module github.com/ibm/go-sdk-core/v5 to v5.21.2 (main) (#19988) (d8ab970)
deps: update module github.com/ibm/ibm-cos-sdk-go to v1.12.4 (main) (#20146) (a80774b)
deps: update module github.com/ibm/ibm-cos-sdk-go to v1.13.0 (main) (#20364) (52d1d8d)
deps: update module github.com/ibm/sarama to v1.46.3 (main) (#19760) (4a19787)
deps: update module github.com/influxdata/telegraf to v1.36.3 (main) (#19796) (4911c98)
deps: update module github.com/influxdata/telegraf to v1.36.4 (main) (#19938) (d6147d8)
deps: update module github.com/influxdata/telegraf to v1.37.0 (main) (#20356) (dc1e0ae)
deps: update module github.com/klauspost/compress to v1.18.1 (main) (#19761) (c5e7293)
deps: update module github.com/klauspost/compress to v1.18.2 (main) (#20108) (f4f2b2a)
deps: update module github.com/leodido/go-syslog/v4 to v4.3.0 (main) (#19416) (036387b)
deps: update module github.com/minio/minio-go/v7 to v7.0.97 (main) (#19762) (ee2b424)
deps: update module github.com/minio/minio-go/v7 to v7.0.98 (main) (#20436) (cf89342)
deps: update module github.com/ncw/swift/v2 to v2.0.5 (main) (#19764) (fa5e144)
deps: update module github.com/oschwald/geoip2-golang to v2 (main) (#19799) (33eeab6)
deps: update module github.com/oschwald/geoip2-golang/v2 to v2.0.1 (main) (#20065) (ac5df60)
deps: update module github.com/oschwald/geoip2-golang/v2 to v2.1.0 (main) (#20357) (8853d71)
deps: update module github.com/parquet-go/parquet-go to v0.26.0 (main) (#20170) (9ffe31e)
deps: update module github.com/parquet-go/parquet-go to v0.26.4 (main) (#20344) (caa21ae)
deps: update module github.com/parquet-go/parquet-go to v0.27.0 (main) (#20426) (a283eac)
deps: update module github.com/prometheus/alertmanager to v0.29.0 (main) (#19797) (5ec7ddc)
deps: update module github.com/prometheus/alertmanager to v0.30.0 (main) (#20358) (f53a609)
deps: update module github.com/prometheus/client_golang to v1.23.2 (main) (#19763) (8317f7e)
deps: update module github.com/prometheus/common to v0.67.3 (main) (#19906) (aafc579)
deps: update module github.com/prometheus/common to v0.67.4 (main) (#19994) (ccc6d73)
deps: update module github.com/prometheus/common to v0.67.5 (main) (#20363) (aaacbf4)
deps: update module github.com/prometheus/prometheus to v0.307.3 (main) (#19800) (7912a67)
deps: update module github.com/prometheus/prometheus to v0.308.0 (main) (#20131) (0aac50b)
deps: update module github.com/prometheus/prometheus to v0.308.1 (main) (#20346) (393d4cd)
deps: update module github.com/prometheus/prometheus to v0.309.1 (main) (#20388) (

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