Rafal Kuc is a team leader and software developer. Right now he is a software architect and Solr and Lucene specialist. Mainly focused on Java, but open on every tool and programming language that will make the achievement of his goal easier and faster. Rafal is also one of the founders of solr.pl site where he tries to share his knowledge and help people with their problems. Rafał is a DZone MVB and is not an employee of DZone and has posted 75 posts at DZone. You can read more from them at their website. View Full User Profile

Lucene and Solr 3.4

09.15.2011
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Today, we can enjoy another version of Lucene and Solr – release numbered 3.4. In the newest version there are a few functionalities worth looking at.

Changes:

  1. Lucene
    • Fixes a bug that could lead to index corruption in case of hardware failure
    • Added faceting module (contrib/facet)
    • Added join module that enables to index and query for nested documents (contrib/join)
    • Added multi-word synonym filter that can be used while indexing and searching
  2. Solr
    • When using results grouping, facetingcan now be applied per group
    • You can now use NIOFSDirectory
    • queryCache and filterCache can be now disabled per request
    • SynonymFilter performance and memory usage was improved
    • Using hl.phraseLimit improves FastVectorHighlighting performance
    • Bug fixes and improvements from Lucene 3.4

The full list of changes in Lucene 3.4 can be found here. Solr 3.4 change list can be found here.

The newest version of Lucene library can be found at the following address: http://www.apache.org/dyn/closer.cgi/lucene/java/. The newest version of Solr search engine can be found at the following 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 3.4 version of Lucene and Solr.

References
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