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Apache Lucene open-source search software
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Adrien Grand a807772d41
More consistently use a SEQUENTIAL ReadAdvice for merging. (#13229) 
Merging `IOContext`s use a `SEQUENTIAL` `ReadAdvice`. However, some file
formats hardcode `IOContext.LOAD` for some of their files, which silences the
whole merging context, in particular the `SEQUENTIAL` `ReadAdvice`.

This PR switches file formats to
`ioContext.withReadAdvice(ReadAdvice.RANDOM_PRELOAD)` so that merges will use a
`SEQUENTIAL` `ReadAdvice` while searches will use a `RANDOM_PRELOAD`
`ReadAdvice`.

This is not a huge deal for `RANDOM_PRELOAD`, which is only used for very small
files. However, this change becomes more relevant for the new `RANDOM`
`ReadAdvice` as we would like merges to keep using a `SEQUENTIAL` `ReadAdvice`.
 		2024-03-29 09:14:14 +01:00
.github Make run-nightly-smoketester.yml run on java 21+ only 2024-02-29 13:03:42 +01:00
buildSrc Upgrade forbiddenapis to version 3.7 and ASM for APIJAR extraction to 9.7 2024-03-24 00:09:24 +01:00
dev-docs a bit of clarification about GitHub Milestone 2022-08-28 13:52:58 +09:00
dev-tools Convert IOContext, MergeInfo, and FlushInfo to record classes (#13205) 2024-03-26 12:27:51 +01:00
gradle remove unnecessary chmod+x, file is marked executable in snowball git 2024-03-28 16:43:47 -04:00
help Fix typo in help/formatting.txt (#12960) 2023-12-21 19:58:53 +01:00
lucene More consistently use a SEQUENTIAL ReadAdvice for merging. (#13229) 2024-03-29 09:14:14 +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 LUCENE-10305: Ensure line endings of versions.props is LF 2021-12-11 10:10:44 +09:00
.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 Update contributing guide: autocrlf and build dependencies (#12963) 2023-12-22 09:28:53 +01:00
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 Bump minimum required Java version to 21 (#12753) 2024-02-29 12:16:29 +01:00
build.gradle Upgrade forbiddenapis to version 3.7 and ASM for APIJAR extraction to 9.7 2024-03-24 00:09:24 +01:00
gradlew Bump minimum required Java version to 21 (#12753) 2024-02-29 12:16:29 +01:00
gradlew.bat Bump minimum required Java version to 21 (#12753) 2024-02-29 12:16:29 +01:00
settings.gradle Build: build scans on ge.apache.org to benefit from deep build insights (#12293) 2023-10-24 12:32:18 -04:00
versions.lock upgrade to OpenNLP 2.3.2 (#12674) 2024-02-09 11:21:41 +00:00
versions.props upgrade to OpenNLP 2.3.2 (#12674) 2024-02-09 11:21:41 +00:00

README.md

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:

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.

See Contributing Guide for details.

Contributing

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

Discussion and Support