Apache Lucene is a high-performance,
full-featured text search engine library written
entirely in Java. It is suitable for nearly any
application that requires full-text search,
especially cross-platform.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.
This release adds suggest/autocomplete functionality. It adds support for merging results from different shards (distributed search). There are improvements to result grouping, near-real-time, and index merging. Improved stemming capabilities.
The ability to group search results was added. The IndexUpgrader tool was added. Near-realtime improvements were made. Document block indexing was implemented. Bugs were fixed.
This release contains numerous bugfixes and improvements since 2.9.3 / 3.0.2, including a memory leak in IndexWriter exacerbated by frequent commits, a file handle leak in IndexWriter when near-real-time readers are opened with compound file format enabled, a rare index corruption case on disk full, NumericRangeQuery / NumericRangeFilter sometimes returning incorrect results with bounds near Long.MIN_VALUE and Long.MAX_VALUE, and various thread safety issues. Lucene 2.9.4 can now also read indexes created by 3.0.x.
These are bug fix releases. Both are fully compatible with the corresponding previous versions. Upgrading to 2.9.2 is strongly recommended if you are using 2.9.1 or 2.9.0, and to 3.0.1 if you are using 3.0.0.
