Apache Lucene open-source search software

Clone this repo:
  1. ef35e6e Work around SecurityManager issues during initialization of vector api (JDK-8309727) (#12362) by Uwe Schindler · 26 hours ago main
  2. a51241e Better paging when random reads go backwards (#12357) by Alan Woodward · 36 hours ago
  3. 2934899 feat: soft delete optimize (#12339) by fudongying · 2 days ago
  4. 9a2d193 [Tessellator] Improve the checks that validate the diagonal between two polygon nodes (#12353) by Ignacio Vera · 2 days ago
  5. 5b63a18 TestHunspell: reduce the flakiness probability (#12351) by Peter Gromov · 3 days ago

Apache Lucene

Lucene Logo

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

Build Status

Online Documentation

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


Basic steps:

  1. Install OpenJDK 17 or 18.
  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.

See Contributing Guide for details.


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

Discussion and Support