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From Adrien Grand <>
Subject [ANNOUNCE] Apache Solr 7.4.0 released
Date Wed, 27 Jun 2018 08:07:50 GMT
27th June 2018, Apache Solr™ 7.4.0 available

The Lucene PMC is pleased to announce the release of Apache Solr 7.4.0

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 (e.g., Word, PDF) 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 7.4.0 is available for immediate download at:

See for a full
list of details.

Solr 7.4.0 Release Highlights:

  A new 'relatedness()' aggregate function for JSON Faceting to enable
building Semantic Knowledge Graphs.
  Added the TaggerRequestHandler (AKA SolrTextTagger) for tagging text.
It's used as a component of NER/ERD systems including query-understanding.
  The "Auto Scaling" feature area has been added to and enhanced a lot.
  The "Streaming Expressions" feature area has been added to and enhanced a
  Upgraded from Log4j 1.x to 2.x. Solr continues to log via SLF4J.

You are encouraged to thoroughly read the "Upgrade Notes" at or in the
CHANGES.txt file accompanying the release.

Solr 7.4 also includes many other new features as well as numerous
optimizations and bugfixes of the corresponding Apache Lucene release.

Please report any feedback to the mailing lists (

Note: The Apache Software Foundation uses an extensive mirroring network
for distributing releases. It is possible that the mirror you are using may
not have replicated the release yet. If that is the case, please try
another mirror. This also goes for Maven access.


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