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

Lucene and Solr 3.2

DZone's Guide to

Lucene and Solr 3.2

· Java Zone
Free Resource

Check out this 8-step guide to see how you can increase your productivity by skipping slow application redeploys and by implementing application profiling, as you code! Brought to you in partnership with ZeroTurnaround.

On 03 June 2011 Lucene and Solr commiters published a new, stable version of Lucene library and Solr search engine – both numbered 3.2. You should not expect revolution in terms of new functionalities, but there are few changes worth the look.

Changes:

  1. Lucene
    • A new grouping module (available under lucene/contrib/grouping)
    • A IndexUpgrader tool that let’s you upgrade your index to the new format
    • NRTCachingDirectory implementation which caches small segments in RAM
    • A new Collector implementation, CachingCollector, which helps developing functionalities which requires more than one pass
  2. Solr
    • Ability to specify overwrite and commitWithin as request parameters when using the JSON update format
    • Improvements to UIMA integration and Carrot2 library integration
    • Performance improvements of highlighting functionality
    • Jar file containing test-framework
    • Improvements from Apache Lucene 3.2


The full list of changes in Lucene 3.2 can be found here. Solr 3.2 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/. So now, we should say “Thank you” and wait for the next major version.

The Java Zone is brought to you in partnership with ZeroTurnaround. Check out this 8-step guide to see how you can increase your productivity by skipping slow application redeploys and by implementing application profiling, as you code!

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 }}