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Apache Lucene open-source search software
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Michael McCandless eadc07cc6a Fix 9.12.0 backcompat break (Lucene 9.12.0 cannot read 9.11.x indices written with quantized HNSW, `Lucene99HnswScalarQuantizedVectorsFormat`) (#13874) 
* carefully regenerate the int8_hnsw bwc indices so that they do in fact use Lucene99ScalarQuantizedVectorsFormat ... when running TestInt8HnswBackwardsCompatibility it now fails (as expected) on 9.11.0 and 9.11.1 bwc indices, but not on 9.10.0

* rename int8 -> int7 bwc tests since we are actually testing 7 bit quantization

* actually fix the bwc bug: only allow compress=true when bits is 7 or 8 in HNSW scalar quantization

* tidy

* Revert "rename int8 -> int7 bwc tests since we are actually testing 7 bit quantization"

This reverts commit eeb3f8a668.

* Reapply "rename int8 -> int7 bwc tests since we are actually testing 7 bit quantization"

This reverts commit 3487c4210b.

* #13880: add test to verify the int7 quantized indices are in fact using quantized vectors not float32

* bump 9.12.x version to 9.12.1 and add bwc indices for 9.12.0

* remove duplicate 9.12.0 Version constant

* revert changes to index.9.12.0-cfs.zip, index.9.12.0-nocfs.zip, sorted.9.12.0.zip

* remove unused bwc index

Closes #13867
Closes #13880
 		2024-10-09 18:11:41 -04:00
.github Nightly gh action 'buildAndPushRelease and smokeTestRelease.py' should save release.log on failure #13754 2024-09-11 08:07:08 +02:00
build-tools Upgrade to gradle 8.10 (#13700) 2024-08-30 12:36:56 +02:00
dev-docs a bit of clarification about GitHub Milestone 2022-08-28 13:52:58 +09:00
dev-tools Adjust command to remove uploaded artifacts upon respin (#13853) 2024-10-03 00:19:41 +02:00
gradle jgit/ clean status check should ignore any 'untracked folders' (#13728) 2024-09-06 09:01:15 +02:00
help Gradle build: cleanup of dependency resolution and consolidation of dependency versions (#13484) 2024-06-17 09:49:21 +02:00
lucene Fix 9.12.0 backcompat break (Lucene 9.12.0 cannot read 9.11.x indices written with quantized HNSW, `Lucene99HnswScalarQuantizedVectorsFormat`) (#13874) 2024-10-09 18:11:41 -04:00
.asf.yaml .asf.yaml 2022-08-16 20:02:47 +09:00
.dir-locals.el LUCENE-9322: Add Lucene90 codec, including VectorFormat 2020-10-18 07:49:36 -04:00
.git-blame-ignore-revs GITHUB#12655: Add google java format upgrade tidy / regen to blame ignore 2023-10-11 16:15:42 -04:00
.gitattributes Add versions.toml to .gitattributes and normalize line endings to lf. #13484 2024-06-18 14:25:40 +02:00
.gitignore LUCENE-9920: Remove binary gradle-wrapper.jar from the repository 2021-04-10 16:08:39 +02:00
.hgignore LUCENE-2792: add FST impl 2010-12-12 15:36:08 +00:00
.lift.toml Disable liftbot, we have our own tools 2022-05-05 22:27:57 +02:00
CONTRIBUTING.md equivocate about IntelliJ test runner 2024-06-10 08:40:38 -04:00
LICENSE.txt LUCENE-10163 Move LICENSE and NOTICE file to top level (#388) 2021-10-18 01:24:11 +02:00
NOTICE.txt Cleanup NOTICE.txt (#12227) 2023-04-18 15:58:09 -04:00
README.md Make Gradle dashboard easy to find by adding a badge (#13476) 2024-07-01 09:09:51 +01:00
build.gradle Support JDK 23 in Panama Vectorization Provider (#13678) 2024-08-22 13:51:32 +01:00
gradlew Gradle build: cleanup of dependency resolution and consolidation of dependency versions (#13484) 2024-06-17 09:49:21 +02:00
gradlew.bat Gradle build: cleanup of dependency resolution and consolidation of dependency versions (#13484) 2024-06-17 09:49:21 +02:00
settings.gradle Gradle build: cleanup of dependency resolution and consolidation of dependency versions (#13484) 2024-06-17 09:49:21 +02:00
versions.lock Gradle build: cleanup of dependency resolution and consolidation of dependency versions (#13484) 2024-06-17 09:49:21 +02:00
versions.toml jgit/ clean status check should ignore any 'untracked folders' (#13728) 2024-09-06 09:01:15 +02:00

README.md

Apache Lucene

Lucene Logo

Apache Lucene is a high-performance, full-featured text search engine library written in Java.

Build Status Revved up by Develocity

Online Documentation

This README file only contains basic setup instructions. For more comprehensive documentation, visit:

Building

Basic steps:

  1. Install OpenJDK 21.
  2. Clone Lucene's git repository (or download the source distribution).
  3. Run gradle launcher script (gradlew).

We'll assume that you know how to get and set up the JDK - if you don't, then we suggest starting at https://jdk.java.net/ and learning more about Java, before returning to this README.

Contributing

Bug fixes, improvements and new features are always welcome! Please review the Contributing to Lucene Guide for information on contributing.

  • Additional Developer Documentation: dev-docs/

Discussion and Support