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

Status: Open (in progress).

apache/lucenenumber 15494

#15494 In apache/lucene;

· gaobinlong opened on Dec 10, 2025

Update documentation in Lucene104PostingsWriter

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 15672

#15672 In apache/lucene;

· Lyon-NEU opened on Feb 6, 2026

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

Prevent writing vectors twice during merging HNSW graphs

module:core/codecs

module:core/hnsw

module:sandbox

module:test-framework

Status: Open (in progress).

apache/lucenenumber 15732

#15732 In apache/lucene;

· iverase opened on Feb 19, 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

Fix TopGroupsCollector#getTopGroups() returning NaN maxScore when a group has no hits

module:grouping

Status: Open (in progress).

apache/lucenenumber 15873

#15873 In apache/lucene;

· gaobinlong opened on Mar 25, 2026

Optimize TopGroups.merge() maxScore computation for relevance sorting

module:grouping

Status: Open (in progress).

apache/lucenenumber 15879

#15879 In apache/lucene;

· gaobinlong opened on Mar 26, 2026

Change access modifier for readAdvise in MMapDirectory

module:core/store

Status: Open (in progress).

apache/lucenenumber 15892

#15892 In apache/lucene;

· navneet1v opened on Mar 30, 2026

Skip heavy TreeSet opts for the first group in SearchGroup#merge

module:grouping

Status: Open (in progress).

apache/lucenenumber 15896

#15896 In apache/lucene;

· gaobinlong opened on Mar 31, 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

Use binary search partitioning in ReaderUtil#partitionByLeaf

module:core/index

Status: Open (in progress).

apache/lucenenumber 15938

#15938 In apache/lucene;

· gsmiller opened on Apr 7, 2026