Issues

• bug: FM-Index queries return no matches after deferred-remap compaction

  bugcritical-fix
  lance-format/lance#10558 · Filter by author wjones127 opened on Nov 1, 2026

• perf: FTS row-order check rescans documents for partitions already known to be out of order

  performance
  lance-format/lance#10551 · Filter by author LuciferYang opened on Nov 1, 2026

• chore: remove the unreachable partition-local IDF branch in FTS posting loads

  lance-format/lance#10550 · Filter by author LuciferYang opened on Nov 1, 2026

• docs: add more engines to user guide

  documentation
  Task

  lance-format/lance#10536 · Filter by author wjones127 opened on Oct 30, 2026
  

• perf: page faults on fresh decode buffers cost as much CPU as decoding large columns

  performance
  lance-format/lance#10529 · Filter by author dshepelev15 opened on Oct 30, 2026

• perf: take_rows opens a scheduler per fragment, so its I/O concurrency is fragments x LANCE_IO_THREADS

  performance
  lance-format/lance#10528 · Filter by author dshepelev15 opened on Oct 30, 2026

• perf: zstd level 1 beats the default level 3 on the per-value path for large text values

  performance
  lance-format/lance#10527 · Filter by author dshepelev15 opened on Oct 30, 2026

• perf: writer emits one page per inserted array for large per-value values (multi-GB pages, single-threaded compression)

  performance
  lance-format/lance#10526 · Filter by author dshepelev15 opened on Oct 30, 2026

• Write data, deletion and index files with If-None-Match: *, so a store can refuse overwriting a committed file

  lance-format/lance#10513 · Filter by author Borg93 opened on Oct 30, 2026
  1

• Column groups: keep chosen columns in their own data files, across writes and compaction

  lance-format/lance#10509 · Filter by author LuciferYang opened on Oct 30, 2026

• cleanup_old_versions deletes a version tagged while it runs

  bug
  lance-format/lance#10499 · Filter by author RyanLin5967 opened on Oct 30, 2026

• What should asof=t return once the version current at t is cleaned up?

  bug
  lance-format/lance#10493 · Filter by author RyanLin5967 opened on Oct 30, 2026

• feature: carry clustering_id and metadata through Transaction V2 fragment and index actions

  feature
  lance-format/lance#10472 · Filter by author wjones127 opened on Oct 29, 2026

• Build and upload python wheels Failed (mac)

  ci
  lance-format/lance#10470 · Filter by author github-actions opened on Oct 29, 2026

• Build and upload python wheels Failed (mac)

  ci
  lance-format/lance#10469 · Filter by author github-actions opened on Oct 29, 2026

• feature: observe process memory during index builds and other operations

  featureperformance
  lance-format/lance#10450 · Filter by author wombatu-kun opened on Oct 29, 2026
  1

• feature: enable the fragment reuse index on stable-row-id tables in release builds

  feature
  lance-format/lance#10446 · Filter by author wjones127 opened on Oct 29, 2026
  1

• feature: parameter binding for LanceDataset.sql() in Python

  bugfeature
  lance-format/lance#10436 · Filter by author karol-kedzia opened on Oct 28, 2026

• feature: StagedSnapshot, a safe multi-step Transaction V2 builder

  bugfeature
  lance-format/lance#10429 · Filter by author wjones127 opened on Oct 28, 2026
  1

• Opening many scalar index segments repeatedly scans index metadata and is ~8x slower in v13 than v11

  performancepriority: high
  lance-format/lance#10414 · Filter by author tianfy17 opened on Oct 28, 2026

• Build and upload python wheels Failed (mac)

  ci
  lance-format/lance#10411 · Filter by author github-actions opened on Oct 28, 2026

• perf: vector search suffers massive per-query overhead when deletion vectors are present

  performance
  lance-format/lance#10402 · Filter by author HeartLinked opened on Oct 28, 2026

• feature: append data and index it in one Transaction V2 commit

  feature
  lance-format/lance#10386 · Filter by author wjones127 opened on Oct 27, 2026
  1

• chore: test that the RaBitQ fast rotation is orthonormal

  lance-format/lance#10382 · Filter by author LuciferYang opened on Oct 27, 2026

• chore: decode the HNSW graph batch once for both remap paths

  lance-format/lance#10381 · Filter by author LuciferYang opened on Oct 27, 2026