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.

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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.