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Background: Historically IndexWriter treated OutOfMemoryError special, for defensive reasons. It was expanded to VirtualMachineError, to try to play it safe in similar disastrous circumstances. We should treat any Error as a tragedy, as it isn't an Exception, and it isn't something a "reasonable" application should catch. IndexWriter should be reasonable. See #7049 for some of the reasoning. We can't pretend this will detect any possible scenario that might cause harm, e.g. a jvm bug might simply miscompile some code and cause silent corruption. But we should try harder by playing by the rules. Closes #13275 Closes #7049
Apache Lucene
Apache Lucene is a high-performance, full-featured text search engine library written in Java.
Online Documentation
This README file only contains basic setup instructions. For more comprehensive documentation, visit:
- Latest Releases: https://lucene.apache.org/core/documentation.html
- Nightly: https://ci-builds.apache.org/job/Lucene/job/Lucene-Artifacts-main/javadoc/
- Build System Documentation: help/
- Developer Documentation: dev-docs/
- Migration Guide: lucene/MIGRATE.md
Building
Basic steps:
- Install OpenJDK 21.
- Clone Lucene's git repository (or download the source distribution).
- 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
- Users Mailing List
- Developers Mailing List
- IRC:
#lucene
and#lucene-dev
on freenode.net
Description
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