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@yanliang567 yanliang567 released this 05 Feb 01:34
· 820 commits to master since this release
v2.6.10
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v2.6.10

Release date: February 5, 2026

Milvus Version Python SDK Version Node.js SDK Version Java SDK Version Go SDK Version
2.6.10 2.6.8 2.6.9 2.6.13 2.6.1

We are pleased to announce the release of Milvus 2.6.10! This update strengthens security controls around KMS key revocation and improves search and storage performance through automatic FP32-to-FP16/BF16 conversion, optimized segment loading, and updated auto-index configurations. This release also fixes a number of stability issues across compaction, query pagination, and recovery workflows. We recommend all users on the 2.6 branch upgrade to this version for improved reliability and performance.

Improvements

  • Added support to stop WAL consumption when a KMS key is revoked (#47018)
  • Updated the default auto-index configuration for vector fields (#47388)
  • Disabled storage-version upgrade compaction by default (#47383)
  • Added automatic FP32-to-FP16/BF16 conversion in search (#47241)
  • Limited segment load concurrency by submitting loads to the load pool (#47335)
  • Added the map_populate flag for mmap to reduce page faults during access (#47317)
  • Persisted BM25 stats to disk during segment loading to reduce recomputation (#47232)
  • Added loading timeout and cancellation support for better control of long-running loads (#47223)
  • Allowed alter_collection_field() to update the field description (#47058)
  • Added a target manager to ReplicaObserver initialization (#47093)
  • Updated the Knowhere version for vector search improvements (#47109)
  • Added BM25 search_by_pk support (#47012)
  • Extracted assign policy from the balancer and added StoppingBalancer (#47138)
  • Prevented import jobs/tasks from rolling back state unexpectedly (#47102)
  • Improved slow logs by recording average cost per NQ (#47086)

Bug fixes

  • Fixed incorrect group results during pagination of grouped queries (#47248)
  • Added boundary validation for threadpool resize operations (#47367)
  • Improved error message handling when the error type is missing (#47369)
  • Prevented coredumps and improved diagnostics for PhyReScoresNode (#47341)
  • Reverted a compaction change related to “fast finish” when L0 compaction hits zero (L1/L2) (#47336)
  • Prevented server crashes on division/modulo by zero in filter expressions (#47306)
  • [Go SDK] Aligned timestamptz field type and data format with the server (#47328)
  • Added authentication to the metrics endpoint when authorization is enabled (#47278)
  • Updated milvus_proxy_req_count metrics for RESTful APIs (#47239)
  • Submitted TriggerTypeStorageVersionUpgrade compaction tasks correctly (#47234)
  • Allowed empty compaction results (#47153)
  • Fixed Azure precheck to use a fixed bucket not owned by Milvus (#47168)
  • Ignored L0 compaction during PreallocSegmentIDs checks (#47189)
  • Fixed compaction fast-finish behavior when L0 compaction hits zero (L1/L2) (#47187)
  • Removed unnecessary batching to reduce OOM risk (#47175)
  • Fixed deserialization handling for empty vector arrays (#47127)
  • Fixed runtime config updates not triggering watchers (#47161)
  • Unified primary-key handling logic between deletePreExecute and packDeleteMessage (#47147)
  • Used user-provided target size in compaction-related logic (#47115)
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