September 14 2011, Apache Solr™ 3.4.0 available The Lucene PMC is pleased to announce the release of Apache Solr 3.4.0.
Apache 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, rich document (e.g., Word, PDF) handling, and geospatial search. Solr is highly scalable, providing distributed search and index replication, and it powers the search and navigation features of many of the world's largest internet sites. This release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at: http://www.apache.org/dyn/closer.cgi/lucene/solr (see note below). If you are already using Apache Solr 3.1, 3.2 or 3.3, we strongly recommend you upgrade to 3.4.0 because of the index corruption bug on OS or computer crash or power loss (LUCENE-3418), now fixed in 3.4.0. See the CHANGES.txt file included with the release for a full list of details. Solr 3.4.0 Release Highlights: * Bug fixes and improvements from Apache Lucene 3.4.0, including a major bug (LUCENE-3418) whereby a Lucene index could easily become corrupted if the OS or computer crashed or lost power. * SolrJ client can now parse grouped and range facets results (SOLR-2523). * A new XsltUpdateRequestHandler allows posting XML that's transformed by a provided XSLT into a valid Solr document (SOLR-2630). * Post-group faceting option (group.truncate) can now compute facet counts for only the highest ranking documents per-group. (SOLR-2665). * Add commitWithin update request parameter to all update handlers that were previously missing it. This tells Solr to commit the change within the specified amount of time (SOLR-2540). * You can now specify NIOFSDirectory (SOLR-2670). * New parameter hl.phraseLimit speeds up FastVectorHighlighter (LUCENE-3234). * The query cache and filter cache can now be disabled per request See http://wiki.apache.org/solr/CommonQueryParameters#Caching_of_filters (SOLR-2429). * Improved memory usage, build time, and performance of SynonymFilterFactory (LUCENE-3233). * Added omitPositions to the schema, so you can omit position information while still indexing term frequencies (LUCENE-2048). * Various fixes for multi-threaded DataImportHandler. Note: The Apache Software Foundation uses an extensive mirroring network for distributing releases. It is possible that the mirror you are using may not have replicated the release yet. If that is the case, please try another mirror. This also goes for Maven access. Happy searching, Apache Lucene/Solr Developers
