Issues

• Delta Metrics: Implement start_timestamps function

  grafana/mimir#16740 · Filter by author ywwg opened on Sep 30, 2026

• docs(mimir): weekly docs triage 2026-09-21 – 2026-09-29 — 1 update + screenshots

  type/docs
  grafana/mimir#16723 · Filter by author cursor opened on Sep 29, 2026
  

• Helm: opt-in setting to spread memcached cache pods across nodes

  grafana/mimir#16709 · Filter by author jmichalek132 opened on Sep 26, 2026

• Bug: MimirCacheRequestErrors can never fire since the 10 req/s floor was added

  grafana/mimir#16707 · Filter by author jmichalek132 opened on Sep 26, 2026

• Bug: Minio ImagePullBackOff

  bug
  grafana/mimir#16704 · Filter by author andregri opened on Sep 25, 2026

• Bug: Cannot use minio because of 401 Unauthorized

  bug
  grafana/mimir#16703 · Filter by author faxm0dem opened on Sep 25, 2026

• docs-workforce 2026-W39: documentation gaps from recently merged PRs

  type/docs
  grafana/mimir#16694 · Filter by author cursor opened on Sep 23, 2026
  

• Idea: Distributor: release decoded write requests after serialization

  component/distributorenhancementingest-storagetype/performance
  grafana/mimir#16675 · Filter by author dmatth1 opened on Sep 21, 2026

• Add annotations and warnings for overlapping start timestamps

  enhancement
  grafana/mimir#16671 · Filter by author carrieedwards opened on Sep 21, 2026

• Support extended range selectors with st-per-sample

  enhancement
  grafana/mimir#16670 · Filter by author carrieedwards opened on Sep 21, 2026

• Make relevant functions ST-aware

  enhancement
  grafana/mimir#16669 · Filter by author carrieedwards opened on Sep 21, 2026

• Propagate ST through chunk iteration

  enhancement
  grafana/mimir#16668 · Filter by author carrieedwards opened on Sep 21, 2026
  

• Bug: ruler: Stale group listing cache drops previously synced groups changes

  bugcomponent/ruler
  Bug

  grafana/mimir#16617 · Filter by author tcard opened on Sep 17, 2026
  1

• MQE: expose per-selector cost information

  mqe
  grafana/mimir#16612 · Filter by author 56quarters opened on Sep 16, 2026
  

• Bug: -ingest-storage.kafka.client-rack is silently ignored when fetch-concurrency-max > 0 (the default)

  bug
  grafana/mimir#16566 · Filter by author via-justa opened on Sep 11, 2026
  5

• Idea: Support OCI (Oracle Cloud Infrastructure) Object Storage with workload identity / instance principal auth

  enhancement
  grafana/mimir#16390 · Filter by author NithinRusum opened on Aug 15, 2026

• Bug: Upgrading from Mimir 2.17 -> 3.1.x is unsafe due to native histograms corruption bug in the 2.17 chunk recoder

  bug
  grafana/mimir#16343 · Filter by author dhlaw-canva opened on Aug 11, 2026
  2

• Helm: gateway nginx re-resolves the distributor per request, so one DNS timeout stalls a push for resolver_timeout

  helm
  grafana/mimir#16317 · Filter by author peterD4N opened on Aug 6, 2026
  1

• Helm: Expose hostAliases for the services

  enhancementhelm
  grafana/mimir#16296 · Filter by author npapapietro opened on Aug 4, 2026
  3

• Bug: Mimir 2.17.x ships prometheus version w/ a native-histogram chunk-recode bug

  bug
  grafana/mimir#16273 · Filter by author dhlaw-canva opened on Jul 31, 2026
  

• Bug: Cost attribution tracking can diverge on early head compaction

  bug
  grafana/mimir#16259 · Filter by author tcard opened on Jul 30, 2026
  2

  

• [mimir-distributed] Helm chart: no way to make store-gateway cache reads zone-local → large inter-zone egress cost

  enhancementhelm
  grafana/mimir#16177 · Filter by author SLoeuillet opened on Jul 21, 2026

• Simplify IPv6 configuration across components

  enhancement
  grafana/mimir#16157 · Filter by author armandgrillet opened on Jul 20, 2026
  1

• Bug: insecure nginx version used in mimir-distributed helmChart

  bughelm
  grafana/mimir#16156 · Filter by author beiermi opened on Jul 20, 2026
  2

• Ruler performance degrades over 2h block ranges period with tsdb size

  grafana/mimir#16150 · Filter by author Jannik2099 opened on Jul 19, 2026
  7