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Apache Lucene open-source search software
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Adrien Grand cfdd20f5bc
Move postings back to int[] to take advantage of having more lanes per vector. (#13968) 
In Lucene 8.4, we updated postings to work on long[] arrays internally. This
allowed us to workaround the lack of explicit vectorization (auto-vectorization
doesn't detect all the scenarios that we would like to handle) support in the
JVM by summing up two integers in one operation for instance.

With explicit vectorization now available, it looks like we can get more
benefits from the ability to compare multiple intetgers in one operations than
from summing up two integers in one operation. Moving back to ints helps
compare 2x more integers at once vs. longs.
 		2024-11-01 07:49:09 +01:00
.github Replace branch_9x references with branch_10x in workflows (#13855) 2024-10-04 13:51:45 +01:00
build-tools Upgrade to gradle 8.10 (#13700) 2024-08-30 12:36:56 +02:00
dev-docs Replace branch_9x references with branch_10x in workflows (#13855) 2024-10-04 13:51:45 +01:00
dev-tools Align TestGenerateBwcIndices.java with AddBackcompatindices.py (#13911) 2024-10-15 13:41:29 +02:00
gradle Move postings back to int[] to take advantage of having more lanes per vector. (#13968) 2024-11-01 07:49:09 +01:00
help Gradle build: cleanup of dependency resolution and consolidation of dependency versions (#13484) 2024-06-17 09:49:21 +02:00
lucene Move postings back to int[] to take advantage of having more lanes per vector. (#13968) 2024-11-01 07:49:09 +01:00
.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 Update year in copyright 2024-10-14 17:59:52 +02:00
README.md Make Gradle dashboard easy to find by adding a badge (#13476) 2024-07-01 09:09:51 +01:00
build.gradle Add next major version 11.0.0 2024-09-30 11:31:56 +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 Upgrade forbiddenapis to version 3.8 2024-10-07 12:25:26 +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