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Grafana Mimir

ANALYTICS
Velocity5.0

Horizontally scalable long-term Prometheus metrics storage

grafana.com/oss/mimir ↗

Mimir's feed is weekly chart bot noise; the 3.2 RC is where the breaking changes hide.

metricsquery-enginenative-histogramshelmbreaking-changesmulti-tenancy
◆Current state
Almost every entry in this window is an identical bot-generated Helm chart release — byte-for-byte the same body across seven tags. The one substantive release is the 3.2.0 RC, whose notes run past the feed's truncation point: continued Mimir Query Engine optimisation, native histogram support in more operators, per-tenant cost attribution trackers, and a tenant-fair compute worker pool on the ingester. Buried in its changelog are changes operators must act on — the embedded per-tenant Alertmanager web UI is gone, credential-bearing headers are now rejected at startup, and querier/store-gateway traffic requires coming from 3.1.
◆Where it's heading
Mimir is deepening the query path rather than widening the product: most of 3.2 is MQE work, subquery spin-off, caching and elimination passes, largely behind experimental flags. The operational surface is growing in parallel — Kafka producer controls, mimirtool and kafkatool subcommands, SigV4 for shared API clients. The chart is versioned and released independently on a weekly bot cadence, which is why the feed reads as empty even in an active month.
◆Prediction
The experimental MQE flags that landed in 3.2 are the ones to watch for promotion to default in 3.3, particularly subquery spin-off and scalar common subexpression elimination. Whether a 3.2.0 final follows this RC is not visible in the feed — only the RC has been published here.

◆Recent moves

  1. 23d ago

    Automated weekly Helm chart release 6.3.0-weekly.409

    A bot-generated weekly chart tag with a body identical to six others in this window. It carries no Mimir change of its own and exists only to keep the independently versioned chart moving.

    View source ↗
  2. 27d ago

    Helm chart 6.2.0 upgrades dependencies to unblock CI

    Despite the 6.2.0 chart version, the entire change is swapping an org-blocked create-github-app-token version so CI can run again. Build-system maintenance with nothing reaching users.

    View source ↗
  3. 1mo ago

    Automated weekly Helm chart release 6.3.0-weekly.408

    Another identical automated chart release, one week ahead of weekly.409. Routine packaging cadence.

    View source ↗
  4. 1mo ago

    Automated weekly Helm chart release 6.2.0-weekly.407

    Bot chart tag on the 6.2 line with the same templated body as its siblings. No user-visible change.

    View source ↗
  5. 1mo ago

    Automated weekly Helm chart release 6.2.0-weekly.406

    A further weekly chart release from the same automation. Included here only because it occupies a slot in the release feed.

    View source ↗
  6. 1mo ago

    Mimir 3.2 RC: query engine work and native histogram support

    The substantive release in this window, gathering 693 PRs into MQE optimisations, histogram_quantiles and native histogram trim operators, cost attribution trackers and an ingester compute worker pool. Its changelog also removes the embedded per-tenant Alertmanager UI, rejects credential-carrying headers in query logging at startup, and requires upgrading from 3.1 for querier-to-store-gateway traffic — upgrade work that is easy to miss given the release reads as enhancement-led.

    View source ↗