fyi -Vincent Begin forwarded message:
> From: Grant Ingersoll <[email protected]> > Date: March 31, 2011 8:46:04 PM GMT+02:00 > To: [email protected], [email protected], general list > <[email protected]>, [email protected] > Subject: Apache Lucene 3.1.0 > > March 2011, Apache Lucene 3.1 available > The Lucene PMC is pleased to announce the release of Apache Lucene 3.1. > > 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/java (see note below). > See the CHANGES.txt > file included with the release for a full list of details. > > Lucene 3.1 Release Highlights > > * Numerous performance improvements: faster exact PhraseQuery; merging > favors segments with deletions; primary key lookup is faster; > IndexWriter.addIndexes(Directory[]) uses file copy instead of > merging; various Directory performance improvements; compound file > is dynamically turned off for large segments; fully deleted segments > are dropped on commit; faster snowball analyzers (in contrib); > ConcurrentMergeScheduler is more careful about setting priority of > merge threads. > > * ReusableAnalyzerBase makes it easier to reuse TokenStreams > correctly. > > * Improved Analysis capabilities: Improved Unicode support, including > Unicode 4, more friendly term handling (CharTermAttribute), easier > object reuse and better support for protected words in lossy token > filters (e.g. stemmers). > > * ConstantScoreQuery now allows directly wrapping a Query. > > * IndexWriter is now configured with a new separate builder API, > IndexWriterConfig. You can now control IndexWriter's previously > fixed internal thread limit by calling setMaxThreadStates. > > * IndexWriter.getReader is replaced by IndexReader.open(IndexWriter). > In addition you can now specify whether deletes should be resolved > when you open an NRT reader. > > * MultiSearcher is deprecated; ParallelMultiSearcher has been > absorbed directly into IndexSearcher. > > * On 64bit Windows and Solaris JVMs, MMapDirectory is now the > default implementation (returned by FSDirectory.open). > MMapDirectory also enables unmapping if the JVM supports it. > > * New TotalHitCountCollector just counts total number of hits. > > * ReaderFinishedListener API enables external caches to evict entries > once a segment is finished. > > 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. > > -------------------------- > Grant Ingersoll > Lucene Revolution -- Lucene and Solr User Conference > May 25-26 in San Francisco > www.lucenerevolution.org > _______________________________________________ devs mailing list [email protected] http://lists.xwiki.org/mailman/listinfo/devs
