Apache Lucene and Solr 4.5

Today Apache Lucene and Solr PMC announced another version of Apache Lucene library and Apache Solr search server numbered 4.5. 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 4.4:


  • Support for missing values in DocValues
  • New in-memory DocIdSet implementation
  • Known bugfixes and improvements


  • Ability do define custom routing, with the possibility to use field value as routing
  • Ability to store solr.xml in ZooKeeeper
  • Multi-threaded faceting
  • CloudSolrServer can now send data directly to shard leader
  • Enchantments that comes with Apache Lucene 4.5

Full changes list for Lucene can be found at http://wiki.apache.org/lucene-java/ReleaseNote45. Full list of changes in Solr 4.5 can be found at: http://wiki.apache.org/solr/ReleaseNote45.

Apache Lucene 4.5 library can be downloaded from the following address: http://www.apache.org/dyn/closer.cgi/lucene/java/. Apache Solr 4.5 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 4.5 version of Lucene and Solr.

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This entry was posted on Saturday, October 5th, 2013 at 10:53 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.