The Apache Software Foundation
Release 2.9.1 of Apache Lucene java is now available.
This release fixes bugs from 2.9.0, including one serious bug whereby BooleanQuery could silently fail to retrieve certain matching documents.
There are also some minor API changes, including a Version parameter added to QueryParser and contrib Analyzers, so that version dependent defaults are consistent across classes, as well as un-deprecating of certain methods (we were too zealous in a few cases!).
Otherwise the changes are all bug fixes and documentation improvements.
This release is fully compatible with 2.9.0. We strongly recommend upgrading to 2.9.1 if you are using 2.9.0. Furthermore, because some additional APIs were deprecated in 2.9.1, to ensure a clean ("JAR drop in") upgrade to 3.0 you'll need to verify your code compiles against 2.9.1 without deprecation warnings.
See core changes at
http://lucene.apache.org/java/2_9_1/changes/Changes.html and contrib
changes at
http://lucene.apache.org/java/2_9_1/changes/Contrib-Changes.html.
Binary and source distributions are available at
http://www.apache.org/dyn/closer.cgi/lucene/java/
Lucene artifacts are also available in the Maven2 repository at
http://repo1.maven.org/maven2/org/apache/lucene/