[ANNOUNCE] Apache Solr 8.4.0 released

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[ANNOUNCE] Apache Solr 8.4.0 released

Adrien Grand
## 29 December 2019, Apache Solr™ 8.4.0 available

The Lucene PMC is pleased to announce the release of Apache Solr 8.4.0.

Solr is the popular, blazing fast, open source NoSQL search platform from the Apache Lucene project. Its major features include powerful full-text search, hit highlighting, faceted search, dynamic clustering, database integration, rich document handling, and geospatial search. Solr is highly scalable, providing fault tolerant distributed search and indexing, and powers the search and navigation features of many of the world's largest internet sites.

Solr 8.4.0 is available for immediate download at:


### Solr 8.4.0 Release Highlights:

  * A new package management system was introduced in order to ease deploying plugins.
  * Better security with the out-of-the-box configuration.

A summary of important changes is published in the Solr Reference Guide at <https://lucene.apache.org/solr/guide/8_4/solr-upgrade-notes.html>.

Please read CHANGES.txt for a full list of new features and changes:


Solr 8.4.0 also includes features, optimizations  and bugfixes in the corresponding Apache Lucene release:


Note: The Apache Software Foundation uses an extensive mirroring network for
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This also applies to Maven access.