Apache Lucene and Solr 4.3

Today Apache Lucene and Solr PMC announced another version of Apache Lucene library and Apache Solr search server numbred 4.3. 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 4.2 version:

Lucene

  • Major improvement to BooleanQuery using the minShoudlMatch option
  • SortingAtomicReader was added, which allows sorting the index on a certain criteria
  • SortingMergePolicy was added, which allows sorting documents before a new segment will be created
  • DocIdSetIterator and Scorer classes enables to set the maximum documents that an iterator should match
  • Known bugfixes and improvements

Solr

  • Ability to configure Solr to automatically discover cores (from a certain directory) without the need of maintaining solr.xml file
  • We can split shards in a SolrCloud deployment on a live collection ! (http://solr.pl/en/2013/05/06/solr-4-3-shard-splitting-quick-look/)
  • Functionality behind schema.xml REST API has been improved and is being ready to allow schema.xml changes with the use of REST API
  • Support for new solr.xml format that will replace the current solr.xml format in the 5.0 version of Solr
  • Enchantments that comes with Apache Lucene 4.3

Full changes list for Lucene can be found at http://wiki.apache.org/lucene-java/ReleaseNote43. Full list of changes in Solr 4.2 can be found at: http://wiki.apache.org/solr/ReleaseNote43.

Apache Lucene 4.3 library can be downloaded from the following address: http://www.apache.org/dyn/closer.cgi/lucene/java/. Apache Solr 4.3 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 4.3 version of Lucene and Solr.

This entry was posted on Monday, May 6th, 2013 at 14:12 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.