11.0.0

Issues

• Promote PerThreadPKLookup to core as PrimaryKeyLookup

  module:core/indexmodule:sandboxmodule:test-frameworkStale
  Unread
  apache/lucene#16128·shubhamsrkdev opened May 26, 2026 · Updated Jul 31, 2026
  29

• Delay and cap the prefetch backoff in MemorySegmentIndexInput

  module:core/store
  Unread
  apache/lucene#16145·michaeljmarshall opened May 28, 2026 · Updated Nov 2, 2026
  56

• Disable verify-changelog-and-set-milestone workflow

  type:task
  apache/lucene#16366 · Filter by author dweiss opened on Jul 6, 2026 · 11.0.0
  1

• Remove all deprecated IndexSearcher#search(Query, Collector) usage / methods in the next major release

  affects-version:10.0type:task
  apache/lucene#12892 · Filter by author zacharymorn opened on Dec 7, 2023 · 11.0.0
  7

  

• Data-blind scalar quantization

  type:enhancementvector-based-search
  Feature

  apache/lucene#16029 · Filter by author mccullocht opened on May 4, 2026 · 11.0.0
  9

• NumericComparator: build DVSkipper competitive iterator immediately in case of search_after

  module:core/searchStale
  Unread
  apache/lucene#16163·martijnvg opened Jun 1, 2026 · Updated Oct 16, 2026
  5

• Fix CharArraySet equals/hashCode contract

  module:core/otherStale
  Unread
  apache/lucene#16261·mayya-sharipova opened Jun 15, 2026 · Updated Oct 28, 2026
  16

• IndexSortSortedNumericDocValuesRangeQuery should support floats and doubles

  type:enhancement
  apache/lucene#16698 · Filter by author HoustonPutman opened on Sep 21, 2026 · 11.0.0
  

• Support floats and doubles in IndexSortSortedNumericDocValuesRangeQuery

  module:core/searchStale
  Unread
  apache/lucene#16699·HoustonPutman opened Sep 21, 2026 · Updated Oct 14, 2026
  5

• Possible deprecations for Lucene 11

  type:task
  apache/lucene#16820 · Filter by author romseygeek opened on Oct 12, 2026 · 11.0.0

• Reduce IndexOrDocValuesQuery DV penalty from 8x to 6x

  module:core/searchStale
  Unread
  apache/lucene#16576·costin opened Aug 28, 2026 · Updated Nov 7, 2026
  10

• Fix parallelism cap when current thread is enrolled in concurrent HNSW merge

  module:core/hnswmodule:core/searchStale
  Unread
  apache/lucene#16778·abernardi597 opened Oct 5, 2026 · Updated Nov 7, 2026
  6

• A briefly saturated intra-merge executor can serialize an entire HNSW graph merge

  type:bug
  apache/lucene#16729 · Filter by author abernardi597 opened on Sep 28, 2026 · 11.0.0
  9

• Add ProactiveMergePolicy and merge selectors

  module:core/index
  Unread
  apache/lucene#16742·costin opened Sep 29, 2026 · Updated Oct 28, 2026
  1

• Deprecations slated for removal in 11.0

  type:task
  Task

  apache/lucene#16918 · Filter by author javanna opened on Oct 27, 2026 · 11.0.0
  12

• Only de-duplicate vectors within a document

  module:sandbox
  Unread
  apache/lucene#16938·kaivalnp opened Oct 29, 2026 · Updated Nov 5, 2026·Draft
  3

• Specify in documentation of IndexInput that any IOException/EOFException while reading from it will leave the stream in an undetermined state

  type:documentation
  apache/lucene#16951 · Filter by author uschindler opened on Oct 29, 2026 · 11.0.0
  3

• Vectorize 3 loops in OptimizedScalarQuantizer

  module:core/othermodule:misc
  Unread
  apache/lucene#16790·slow-J opened Oct 7, 2026 · Updated Nov 6, 2026
  40

• Collector manager join

  module:core/searchmodule:groupingmodule:joinmodule:test-framework
  Unread
  apache/lucene#16805·msokolov opened Oct 9, 2026 · Updated Nov 4, 2026
  23

• Add PartialHitCountCollector to count hits up to a threshold

  module:misc
  Unread
  apache/lucene#16967·reugn opened Nov 3, 2026 · Updated Nov 3, 2026