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README.md
Apache Lucene and Solr
Apache Lucene is a high-performance, full featured text search engine library written in Java.
Apache Solr is an enterprise search platform written using Apache Lucene. Major features include full-text search, index replication and sharding, and result faceting and highlighting.
Online Documentation
This README file only contains basic setup instructions. For more comprehensive documentation, visit:
Building Lucene/Solr
(You do not need to do this if you downloaded a pre-built package)
Building with Ant
Lucene and Solr are built using Apache Ant. To build Lucene and Solr, run:
ant compile
If you see an error about Ivy missing while invoking Ant (e.g., .ant/lib does not exist), run ant ivy-bootstrap and retry.
Sometimes you may face issues with Ivy (e.g., an incompletely downloaded artifact). Cleaning up the Ivy cache and retrying is a workaround for most of such issues:
rm -rf ~/.ivy2/cache
The Solr server can then be packaged and prepared for startup by running the
following command from the solr/ directory:
ant server
Building with Gradle
There is ongoing work (see LUCENE-9077) to switch the legacy ant-based build system to gradle. Please give it a try!
At the moment of writing, the gradle build requires precisely Java 11 (it may or may not work with newer Java versions).
To build Lucene and Solr, run (./ can be omitted on Windows):
./gradlew assemble
The command above also packages a full distribution of Solr server; the package can be located at:
solr/packaging/build/solr-*
Note that the gradle build does not create or copy binaries throughout the source repository (like ant build does) so you need to switch to the packaging output folder above; the rest of the instructions below remain identical.
Running Solr
After building Solr, the server can be started using
the bin/solr control scripts. Solr can be run in either standalone or
distributed (SolrCloud mode).
To run Solr in standalone mode, run the following command from the solr/
directory:
bin/solr start
To run Solr in SolrCloud mode, run the following command from the solr/
directory:
bin/solr start -c
The bin/solr control script allows heavy modification of the started Solr.
Common options are described in some detail in solr/README.txt. For an
exhaustive treatment of options, run bin/solr start -h from the solr/
directory.
Development/IDEs
Ant can be used to generate project files compatible with most common IDEs. Run the ant command corresponding to your IDE of choice before attempting to import Lucene/Solr.
- Eclipse -
ant eclipse(See this for details) - IntelliJ -
ant idea(See this for details) - Netbeans -
ant netbeans(See this for details)
Gradle build and IDE support
- IntelliJ - IntelliJ idea can import the project out of the box. Code formatting conventions should be manually adjusted.
- Eclipse - Not tested.
- Netbeans - Not tested.
Running Tests
The standard test suite can be run with the command:
ant test
Like Solr itself, the test-running can be customized or tailored in a number or ways. For an exhaustive discussion of the options available, run:
ant test-help
Gradle build and tests
Run the following command to display an extensive help for running tests with gradle:
./gradlew helpTests
Contributing
Please review the Contributing to Solr Guide for information on contributing.
Discussion and Support
- Users Mailing List
- Developers Mailing List
- Lucene Issue Tracker
- Solr Issue Tracker
- IRC:
#solrand#solr-devon freenode.net