Over a million developers have joined DZone.
{{announcement.body}}
{{announcement.title}}

Lucene and Solr 3.3

DZone's Guide to

Lucene and Solr 3.3

· Java Zone
Free Resource

Learn how to troubleshoot and diagnose some of the most common performance issues in Java today. Brought to you in partnership with AppDynamics.

Only a few weeks passed since the release of 3.2 version Lucene and Solr (change list) and today we have another release numbered 3.3. In the newest version there are a few functionalities worth looking at, especially when we talk about Solr.

Changes:

  1. Lucene
    • The spellchecker module now includes autocomplete functionality with three implementations
    • Support for merging results from multiple shards
    • An optimized implementation of KStem library – stemmer for English
    • Improvements to MMapDirectory
    • NRTManager which simplifies handling near real time search with multiple search threads

  2. Solr
    • Field collapsing functionality which allows results grouping
    • KStemFilterFactory – filter factory which allows using optimized version of KStem library
    • The default merge policy used by Solr is now TieredMergePolicy
    • A new, automaton-based, autocomplete implementation
    • Improvements from Apache Lucene 3.3


The full list of changes in Lucene 3.3 can be found here. Solr 3.3 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 3.3 version of Lucene and Solr.

Understand the needs and benefits around implementing the right monitoring solution for a growing containerized market. Brought to you in partnership with AppDynamics.

Topics:

Published at DZone with permission of Rafał Kuć, DZone MVB. See the original article here.

Opinions expressed by DZone contributors are their own.

The best of DZone straight to your inbox.

SEE AN EXAMPLE
Please provide a valid email address.

Thanks for subscribing!

Awesome! Check your inbox to verify your email so you can start receiving the latest in tech news and resources.
Subscribe

{{ parent.title || parent.header.title}}

{{ parent.tldr }}

{{ parent.urlSource.name }}