Apache Lucene and Solr 4.2

Today Apache Lucene and Solr PMC announced another version of Apache Lucene library and Apache Solr search server numbred 4.2. This is a next release continuing the 4th version of both Apache Lucene and Apache Solr.

Here are some of the changes that were made comparing to the 4.1 version:

Lucene

  • New, default codec with default term vectors compression and more efficient DocValues format
  • Refactoring and performance improvement to faceting module
  • FST structure now supports data in size above 2GB

Solr

  • API for index structure allowing for schema.xml elements fetching
  • DocValues support
  • Collections aliasing
  • Custom node names for SolrCloud deployments
  • Enchantments that comes with Apache Lucene 4.2

Full changes list for Lucene can be found at http://wiki.apache.org/lucene-java/ReleaseNote42. Full list of changes in Solr 4.2 can be found at: http://wiki.apache.org/solr/ReleaseNote42.

Apache Lucene 4.2 library can be downloaded from the following address: http://www.apache.org/dyn/closer.cgi/lucene/java/. Apache Solr 4.2 can be downloaded at the following URL address: http://www.apache.org/dyn/closer.cgi/lucene/solr/. Please remember that the mirrors are just starting to update so not all of them will contain the 4.2 version of Lucene and Solr.

This entry was posted on Tuesday, March 12th, 2013 at 08:33 and is filed under About Lucene, About Solr, Solr. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

2 Responses to “Apache Lucene and Solr 4.2”

  1. Andrew Says:

    We’ve written a blog post about our experience using Solr 4.1 versus Solr 4.2. Specifically we discuss the usage of the compressed term frequency vectors, and the time/storage costs. It looks like a great feature which works right out of the box!

    read more about it here: http://www.searchbox.com/solr-4-2-vs-solr-4-1-compressed-term-frequency-vectors/

  2. gr0 Says:

    Thanks for the information Andrew 🙂