Apache Solr 1.4.1 has been released and is now available for public
download!
http://www.apache.org/dyn/closer.cgi/lucene/solr/

Solr is the popular, blazing fast open source enterprise search
platform from the Apache Lucene project. Its major features include
powerful full-text search, hit highlighting, faceted search, dynamic
clustering, database integration, and rich document (e.g., Word, PDF)
handling. Solr is highly scalable, providing distributed search and
index replication, and it powers the…

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Hello Lucene users,

On behalf of the Lucene development community I would like to announce the
release of Lucene Java versions 3.0.2 and 2.9.3:

Both releases fix bugs in the previous versions:

- 2.9.3 is a bugfix release for the Lucene Java 2.x series, based on Java
1.4.
- 3.0.2 has the same bug fix level but is for the Lucene Java 3.x series,
based on Java 5.

New users of…

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The Lucene community has recently decided to merge the development of two of its sub-projects – Lucene->Java and Lucene->Solr. Both code bases now sit under the same trunk in svn and Solr actually runs straight off the latest Lucene code at all times. This is just a merge of development though. Release artifacts will remain separate: Lucene will remain a core search engine Java library and Solr will remain a search server built on top…

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The vote is on for what I think is a Lucene first – two simultaneous bug fix releases. Because the Lucene 2 series is the last to support Java 1.4, we are doing a bug fix release for for 2.9 as well as the recently released Java 1.5 required 3.0 release.

A little preview from the proposed release announce:

Important improvements in these releases are a increased maximum number of unique terms in each index

…

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We were all so caught up in the fun at ApacheCon that no one announced the Lucene 2.9.1 release. Its out, and its highly recommended if you are currently on 2.9.0. Check it out: http://lucene.apache.org/java/docs/#6+November+2009+-+Lucene+Java+2.9.1+available

To learn more about what’s new in the Lucene 2.9.1 release, check out these resources:

• White Paper: “What’s New in Apache Lucene 2.9″
• Recorded Webinar: “Apache Lucene 2.9: Discover the Powerful New Features”

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Solr 1.4 won’t officially be released until tomorrow when the announcement goes out, but the official dist has already found its way onto some of the mirrors. Try your luck if your antsy

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Lucene 2.9.1 should hit the streets this week. 2.9.1 will be a bug fix release and includes a number of important fixes to the Lucene 2.9 release. You can see a list of the current 2.9.1 issues in JIRA here: JIRA 2.9.1 Issues. A couple of these bugs are quite nasty, so this is a highly recommended upgrade.

Why Lucene 2.9.1 rather than simply releasing the almost finished Lucene 3.0 with these bug fixes?…

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…

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*edit* Sorry – jumped the gun with my original test code here – need to close the IndexWriter after the optimize! The gains are only with multi segment indexes. Corrected entry follows:

Lets do a little test. We will load up a FieldCache with 5,000,000 unique strings and see how long it takes Lucene 2.4 in comparison to Lucene 2.9.

Lets use my quad core laptop and the following test code:

public Read more...