List view

Use bulk scoring in NeighborArray#isWorstNonDiverse

module:core/hnsw

Stale

Status: Open (in progress).

apache/lucenenumber 15667

#15667 In apache/lucene;

· ML-dev-crypto opened on Feb 5, 2026

Optimize prefix sum computation in Lucene99HnswVectorsReader; fixes #15024

module:core/codecs

Stale

Status: Open (in progress).

apache/lucenenumber 15027

#15027 In apache/lucene;

· yossev opened on Aug 1, 2025

Update code comment after bumping block size to 256.

module:core/codecs

skip-changelogApply to PRs that don't need a changelog entry, stopping the automated changelog check.Apply to PRs that don't need a changelog entry, stopping the automated changelog check.

Stale

Status: Open (in progress).

apache/lucenenumber 15177

#15177 In apache/lucene;

· jpountz opened on Sep 11, 2025

Set minimum competitive score in FirstPassGroupingCollector

module:grouping

Stale

Status: Open (in progress).

apache/lucenenumber 15494

#15494 In apache/lucene;

· gaobinlong opened on Dec 10, 2025

Add half-float (FP16) storage support for vectors

module:core/codecs

module:core/hnsw

module:core/index

module:core/search

module:core/store

module:highlighter

module:queries

module:sandbox

module:test-framework

Stale

Status: Open (in progress).

apache/lucenenumber 15549

#15549 In apache/lucene;

· Pulkitg64 opened on Jan 5, 2026

Add optional query bit size hint to KnnSearchStrategy.Hnsw

module:core/search

Stale

Status: Open (in progress).

apache/lucenenumber 15708

#15708 In apache/lucene;

· arup-chauhan opened on Feb 15, 2026

Store pre-aggregated sum and value count in DocValuesSkipper

module:core/codecs

module:core/index

module:core/search

module:test-framework

Stale

Status: Open (in progress).

apache/lucenenumber 15737

#15737 In apache/lucene;

· jainankitk opened on Feb 20, 2026

Avoid unnecessary DisjunctionMaxBulkScorer overhead

module:core/search

Stale

Status: Open (in progress).

apache/lucenenumber 15659

#15659 In apache/lucene;

· shimpeko opened on Feb 2, 2026

Fix SpanOrQuery scores each document using the combined IDF of all causes

module:queries

Stale

Status: Open (in progress).

apache/lucenenumber 15819

#15819 In apache/lucene;

· gaobinlong opened on Mar 13, 2026

Change access modifier for readAdvise in MMapDirectory

module:core/store

Stale

Status: Open (in progress).

apache/lucenenumber 15892

#15892 In apache/lucene;

· navneet1v opened on Mar 30, 2026

Optimize LongValueFacetCutter with leaf-local ordinal cache

module:sandbox

Status: Open (in progress).

apache/lucenenumber 15898

#15898 In apache/lucene;

· RamakrishnaChilaka opened on Mar 31, 2026

Improve BayesianScoreQuery and LogOddsFusionQuery with base rate prior, weighted Log-OP, and parameter estimation

module:core/search

Status: Open (in progress).

apache/lucenenumber 15948

#15948 In apache/lucene;

· jaepil opened on Apr 10, 2026

Data-blind scalar quantization

type:enhancement

vector-based-search

Status: Open.

Feature

#16029 In apache/lucene;

· mccullocht opened on May 4, 2026

Implement data-blind scalar quantization

module:core/codecs

Stale

Status: Open (in progress).

apache/lucenenumber 16030

#16030 In apache/lucene;

· mccullocht opened on May 4, 2026

Skipping scorer construction for clauses with zero cost

module:core/search

Status: Open (in progress).

apache/lucenenumber 15998

#15998 In apache/lucene;

· sgup432 opened on Apr 29, 2026

Fix(15831): Resolve race condition in ReferenceManager.doMaybeRefresh

module:core/search

module:facet

Stale

Status: Open (in progress).

apache/lucenenumber 15985

#15985 In apache/lucene;

· vijaykriishna opened on Apr 25, 2026

Introduce FirstPassGroupingCollectorManager

module:grouping

Status: Open (in progress).

apache/lucenenumber 15574

#15574 In apache/lucene;

· gaobinlong opened on Jan 15, 2026

Introduce BlockGroupingCollectorManager

module:grouping

Status: Open (in progress).

apache/lucenenumber 15936

#15936 In apache/lucene;

· gaobinlong opened on Apr 4, 2026

Introduce MemoryAccountingBitsetCollectorManager

module:misc

Status: Open (in progress).

apache/lucenenumber 15795

#15795 In apache/lucene;

· gaobinlong opened on Mar 4, 2026

Replace deprecated search(Query, Collector) with CollectorManager in JoinUtil

module:join

Status: Open (in progress).

apache/lucenenumber 16091

#16091 In apache/lucene;

· javanna opened on May 20, 2026

docs(util): clarify Accountable.ramBytesUsed() ownership semantics

module:core/other

Status: Draft (not ready).

apache/lucenenumber 16114

#16114 In apache/lucene;

· salvatorecampagna opened on May 23, 2026

Invert eligible BinaryColumns in the column pass

module:core/index

Status: Draft (not ready).

apache/lucenenumber 16116

#16116 In apache/lucene;

· Tim-Brooks opened on May 24, 2026

Optimize byte array writes in OutputStreamIndexOutput to remove unnecessary overhead

module:core/store

Status: Open (in progress).

apache/lucenenumber 16119

#16119 In apache/lucene;

· neoremind opened on May 25, 2026

Avoid double-counting Automaton in CompiledAutomaton.ramBytesUsed

module:core/other

Status: Open (in progress).

apache/lucenenumber 16046

#16046 In apache/lucene;

· reugn opened on May 10, 2026

PanamaDocValuesRangeSupport: OR mask directly into FixedBitSet instead of per-bit loop

module:core/search

Status: Open (in progress).

apache/lucenenumber 16123

#16123 In apache/lucene;

· sgup432 opened on May 25, 2026