Loki 3.7.3 release notes

3.7.3 (2026-06-24)

⚠ BREAKING CHANGES

operator: switch default for OpenShift stream labels (#21001)

Features

add bloom filter to cache known streams for ExceedsLimits requests (#20823) (f5440a3)
add builder pool to logsobj package (#21134) (8a68101)
add case-insensitive regex optimization (#20578) (f6a6a4f)
Add config to delegate stream limits check to limits-service only (#21007) (ba119f6)
add flush manager to control data object flush lifecycle (#20680) (c169ce3)
add GroupConsumer to kafkav2 package (#20748) (5ad60ee)
Add results cache to thor query engine (#20986) (6ef3827)
Add SubstringInsensitive compute fn (#20584) (9c03192)
Align start time when the query is received (#20967) (8e18f10)
allow the initial offset to be set in the starting phase (#20770) (93f4bdf)
Batch records before writing to sinks (#20821) (f083618)
bench: add simulated object storage latency to LogQL benchmarks (#20733) (5102ed0)
build: Move to Go 1.26 (#20988) (4fb960c)
close the records chan when consumer terminates (#20761) (c3d0de9)
dataobj-compactor: add a planner for compaction of data objects (#20527) (7f1450d)
don't shuffle shard if shard factor is 1 (#21190) (7ac1d16)
early goldfish correlation ID generation with X-Loki-Goldfish-ID header (#21155) (e90e4a6)
engine: Dedupe entries when building final result (#21034) (e95137a)
enginev2: Implement IsMember compute function (#20689) (a28d8b4)
enginev2: Implement regexp compute function (#20642) (7b8d51b)
enginev2: Implement substr compute function (#20641) (9740619)
helm: Add common labels to all resources (#20269) (dc21099)
helm: allow customization of write, read and backend PDB (#16871) (9f653b1)
helm: finalize chart fork (#21166) (33f7a1b)
helm: Memcached: allow to override CPU in the auto-computed resource mode (#20767) (3886548)
Introduce a rate batcher to batch rate updates (#20784) (b9a0a15)
limits: Add emptiness check to prepare for multiAZ (#20927) (4eeb70c)
loki-query-engine: instrument query-engine with runtime/trace (#21000) (a7c75a6)
loki: allow disabling cache for query_range requests (#21112) (1242aa5)
operator: add option to customize gateway server cert (#20325) (3c8b9e8)
operator: switch default for OpenShift stream labels (#21001) (61ec040)
operator: Update Loki operand to v3.6.5 (#20696) (d81e977)
operator: update metrics authentication to remove dependency on kube-rbac-proxy (#20853) (2de6e79)
put kotel behind a flag (#20933) (f8e2d64)
query-engine: Omit labels with empty values (#21173) (5c17103)
refactor frontend cache, add metrics, filter out cached streams (#20860) (a63f0c3)
release 3.7 (#21270) (21d5b59)
Remove Promtail support (backport k299) (#21248) (939d15f)
reset the consumption lag gauge after 1 minute of idle period (#20616) (f1d0cdf)
separate metastore events and offsets from flushes (#20605) (cb938d0)
Update references to v3.7.0 (backport k299) (#21274) (3361de2)
Update to go 1.25.7 (#20694) (3a6ba0d)
use stream sharding within segment subrings (#21181) (2def797)
V2 query engine limits (#20549) (7151be7)

Bug Fixes

Add build tags to Promtail build commands (#19989) (5596bdc)
alloc: set a limit on preallocations (#20891) (9525e53)
allow blocking multiple query hashes (#21103) (4c645c6)
backoff if no records returned, instead of at least one error (#20747) (eab506d)
broken get and replace for s3 client (#21163) (e6abd15)
cancelation in kafkv2/consumer.go (#20745) (f9f20e5)
ci: Log into dockerhub (#22528) (3584391)
ci: prepare release 3.7.3 (82cdcdc)
ci: Remove test checking for nfpm vars, like main (#22501) (5f48f39)
ci: Use latest version of loki-release for capital letter support (#22520) (42c5158)
ci: Use latest workflow definitions for 3.7.x (#22496) (0bed459)
correct missing accumulation metric (#20734) (88cb599)
correct relative path to configuration examples (#20546) (9001084)
correctness failure for aggregations with a drop (#20782) (3b44b80)
CVEs in release 3.7.x (#21771) (bb4c5d8)
dataobj-inspect: Enhance dump and list-streams commands (#20757) (cd3fd30)
dataobj: Also apply categorize labels to parsed labels (#20671) (660ce3f)
dataobj: Avoid deadlock in index-builder when cancelling mid-build (#20621) (294d574)
dataobj: Mark events completed after successful commit (#20658) (328f3d4)
deps: update github.com/prometheus/prometheus digest to 02b1aba (main) (#20964) (4fff517)
deps: update github.com/prometheus/prometheus digest to 1751685 (main) (#21028) (a9fa799)
deps: update github.com/prometheus/prometheus digest to 3b1d658 (main) (#21003) (0ebaec5)
deps: update github.com/prometheus/prometheus digest to 8b25b26 (main) (#21038) (5bee0b0)
deps: update github.com/prometheus/prometheus digest to c317f92 (main) (#20958) (84ffd0d)
deps: update module charm.land/bubbletea/v2 to v2.0.2 (main) (#21035) (9dfac55)
deps: update module charm.land/lipgloss/v2 to v2.0.2 (main) (#21143) (99b89ec)
deps: update module cloud.google.com/go/bigtable to v1.42.0 (main) (#20737) (6c304a8)
deps: update module cloud.google.com/go/bigtable to v1.43.0 (main) (#21209) (ce89334)
deps: update module cloud.google.com/go/storage to v1.59.2 (main) (#20632) (e3f2d18)
deps: update module cloud.google.com/go/storage to v1.61.3 (main) (#21161) (0a47c34)
deps: update module github.com/alecthomas/chroma/v2 to v2.23.1 (main) (#20570) (22b955e)
deps: update module github.com/alicebob/miniredis/v2 to v2.36.1 (main) (#20564) (03fcc22)
deps: update module github.com/alicebob/miniredis/v2 to v2.37.0 (main) (#21017) (041950d)
deps: update module github.com/apache/arrow-go/v18 to v18.5.1 (main) (#20574) (615e2a6)
deps: update module github.com/apache/arrow-go/v18 to v18.5.2 (main) (#21052) (2fea9be)
deps: update module github.com/aws/aws-sdk-go-v2/config to v1.32.10 (main) (#20991) (ed30f95)
deps: update module github.com/aws/aws-sdk-go-v2/config to v1.32.12 (main) (#21091) (9555486)
deps: update module github.com/aws/aws-sdk-go-v2/config to v1.32.9 (main) (#20901) (7170a1f)
deps: update module github.com/aws/aws-sdk-go-v2/credentials to v1.19.12 (main) (#21092) (fde8984)
deps: update module github.com/aws/aws-sdk-go-v2/credentials to v1.19.9 (main) (#20902) (43bbe5e)
deps: update module github.com/aws/aws-sdk-go-v2/service/dynamodb to v1.54.0 (main) (#20568) (2a39e8c)
deps: update module github.com/aws/aws-sdk-go-v2/service/dynamodb to v1.55.0 (main) (#20729) (0aea290)
deps: update module github.com/aws/aws-sdk-go-v2/service/dynamodb to v1.56.0 (main) (#20995) (cd1000e)
deps: update module github.com/aws/aws-sdk-go-v2/service/dynamodb to v1.56.2 (main) (#21093) (3b05fe7)
deps: update module github.com/aws/aws-sdk-go-v2/service/s3 to v1.96.0 (main) (#20633) (3da63c5)
deps: update module github.com/aws/aws-sdk-go-v2/service/s3 to v1.96.1 (main) (#20993) (d36987e)
deps: update module github.com/aws/aws-sdk-go-v2/service/s3 to v1.96.2 (main) (#21025) (b24c270)
deps: update module github.com/aws/aws-sdk-go-v2/service/s3 to v1.97.1 (main) (#21094) (dc46c09)
deps: update module github.com/aws/aws-sdk-go-v2/service/s3 to v1.97.3 [security] (release-3.7.x) (#21457) (7bc9450)
deps: update module github.com/aws/smithy-go to v1.24.1 (main) (#20939) (9926aa9)
deps: update module github.com/aws/smithy-go to v1.24.2 (main) (#21036) (07c0410)
deps: update module github.com/baidubce/bce-sdk-go to v0.9.259 (main) (#20644) (09c2509)
deps: update module github.com/baidubce/bce-sdk-go to v0.9.260 (main) (#20816) (7b229cd)
deps: update module github.com/baidubce/bce-sdk-go to v0.9.262 (main) (#21142) (bafd8f4)
deps: update module github.com/bmatcuk/doublestar/v4 to v4.10.0 (main) (#20601) (af2487f)
deps: update module github.com/buger/jsonparser to v1.1.2 [security] (main) (#21200) (3a33aa7)
deps: update module github.com/charmbracelet/bubbles to v0.21.1 (main) (#20713) (06c1280)
deps: update module github.com/charmbracelet/bubbles to v1 (main) (#20788) (b76a53f)
deps: update module github.com/charmbracelet/bubbles to v2 (main) (#21005) (444e6b0)
deps: update module github.com/datadog/sketches-go to v1.4.8 (main) (#20940) (db66b9f)
deps: update module github.com/fsouza/fake-gcs-server to v1.54.0 (main) (#20687) (aaa306f)
deps: update module github.com/grafana/loki/v3 to v3.6.4 (main) (#20563) (65ee190)
deps: update module github.com/grafana/loki/v3 to v3.6.5 (main) (#20746) (ed204f9)
deps: update module github.com/grafana/loki/v3 to v3.6.6 (main) (#20907) (55faade)
deps: update module github.com/grafana/loki/v3 to v3.6.7 (main) (#20975) (911fce4)
deps: update module github.com/hashicorp/consul/api to v1.33.4 (main) (#20961) (d4c7fe6)
deps: update module github.com/heroku/x to v0.5.3 (main) (#20637) (d6f34e8)
deps: update module github.com/ibm/ibm-cos-sdk-go to v1.14.0 (main) (#21063) (f78778e)
deps: update module github.com/ibm/sarama to v1.47.0 (main) (#21029) (5393bf9)
deps: update module github.com/influxdata/telegraf to v1.37.2 (main) (#20707) (5a71216)
deps: update module github.com/klauspost/compress to v1.18.4 (main) (#20743) (fe47956)
deps: update module github.com/minio/minio-go/v7 to v7.0.99 (main) (#21096) (1f196f6)
deps: update module github.com/parquet-go/parquet-go to v0.28.0 (main) (#20973) (0edcd60)
deps: update module github.com/parquet-go/parquet-go to v0.29.0 (main) (#21156) (d56d6d2)
deps: update module github.com/pierrec/lz4/v4 to v4.1.26 (main) (#21109) (69eabad)
deps: update module github.com/pressly/goose/v3 to v3.27.0 (main) (#20965) (694d42e)
deps: update module github.com/prometheus/alertmanager to v0.31.0 (main) (#20692) (9e3f94b)
deps: update module github.com/prometheus/alertmanager to v0.31.1 (main) (#20815) (9fe7528)
deps: update module github.com/prometheus/sigv4 to v0.4.1 (main) (#20688) (75cb1c4)
deps: update module github.com/redis/go-redis/v9 to v9.17.3 (main) (#20597) (c3cff2c)
deps: update module github.com/redis/go-redis/v9 to v9.18.0 (main) (#20878) (b7cfa4f)
deps: update module github.com/shirou/gopsutil/v4 to v4.26.1 (main) (#20635) (734e237)
deps: update module github.com/shirou/gopsutil/v4 to v4.26.2 (main) (#21031) (bf192d2)
deps: update module github.com/tjhop/slog-gokit to v0.1.6 (main) (#21080) (19894ab)
deps: update module github.com/twmb/franz-go to v1.20.7 (main) (#20908) (21cf5f0)
deps: update module github.com/twmb/franz-go/pkg/kadm to v1.17.2 (main) (#20566) (8092a8a)
deps: update module go.opentelemetry.io/collector/pdata to v1.50.0 (main) (#20558) (fdcb6f1)
deps: update module go.opentelemetry.io/collector/pdata to v1.51.0 (main) (#20700) (56633ae)
deps: update module go.opentelemetry.io/collector/pdata to v1.52.0 (main) (#20909) (755d465)
deps: update module go.opentelemetry.io/collector/pdata to v1.53.0 (main) (#21058) (a06244a)
deps: update module go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc to v0.65.0 (main) (#20701) (e815af4)
deps: update module go.opentelemetry.io/contrib/instrumentation/net/http/httptrace/otelhttptrace to v0.65.0 (main) (#20702) (9643aaa)
deps: update module go.opentelemetry.io/contrib/instrumentation/net/http/httptrace/otelhttptrace to v0.67.0 (main) (#21073) (df4e1f5)
deps: update module go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp to v0.65.0 (main) (#20703) (6f22714)
deps: update module go.opentelemetry.io/otel/sdk to v1.42.0 (main) (#21065) (9f5f159)
deps: update module golang.org/x/net to v0.50.0 (main) (#20795) (705ba84)
deps: update module golang.org/x/oauth2 to v0.35.0 (main) (#20740) (7c7b1fe)
deps: update module golang.org/x/oauth2 to v0.36.0 (main) (#21099) (cb058ba)
deps: update module golang.org/x/sys to v0.41.0 (main) (#20759) (9da5d5e)
deps: update module golang.org/x/text to v0.34.0 (main) (#20792) (4d437a3)
deps: update module golang.org/x/text to v0.35.0 (main) (#21158) (7b863a3)
deps: update module golang.org/x/tools to v0.42.0 (main) (#20796) (de16cb3)
deps: update module golang.org/x/tools to v0.43.0 (main) (#21169) (71c9cee)
deps: update module google.golang.org/api to v0.266.0 (main) (#20483) (a5e5c06)
deps: update module google.golang.org/api to v0.267.0 (main) (#20900) (3aa987c)
deps: update module google.golang.org/api to v0.268.0 (main) (#20989) (42ab348)
deps: update module google.golang.org/api to v0.269.0 (main) (#21014) (d1f08ff)
deps: update module google.golang.org/api to v0.272.0 (main) (#21151) (dc38b6a)
deps: update module google.golang.org/grpc to v1.78.0 (main) (#20380) (eccec66)
deps: update module google.golang.org/grpc to v1.79.1 (main) (#20813) (60c67f2)
deps: update module k8s.io/apimachinery to v0.35.1 (main) (#20758) (12c35dd)
deps: update module k8s.io/apimachinery to v0.35.2 (main) (#20997) (

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