Li Li, there is no official / unofficial release date for lucene 4.0 if you want to use the latest and greatest features you need to checkout trunk of use a nightly build. My guess would be that there is at least 6 to 8 month to the next release but I can be wrong (more likely it might take even longer) .
For PFoR etc you should look into: https://issues.apache.org/jira/browse/LUCENE-1410 https://issues.apache.org/jira/browse/LUCENE-2723 to get started - and read mikes blog http://chbits.blogspot.com/2010/08/lucene-performance-with-pfordelta-codec.html There is also S9 https://issues.apache.org/jira/browse/LUCENE-2189 and GroupVInt impls https://issues.apache.org/jira/browse/LUCENE-2735 simon On Mon, Nov 8, 2010 at 4:59 AM, Li Li <[email protected]> wrote: > hi all, > When will lucene 4.0 be released? > I want to replace VInt compression with fast ones such as > PForDelta. In my application, decompressing a docList of 10M will use > about 300ms. In "Performance of Compressed Inverted List Caching in > Search Engines. With J. Zhang and X.Long. 17th International World > Wide Web Conference (WWW), April 2008." , the author says PForDelta is > much faster than VInt. And I also found a java implementation in > http://code.google.com/p/integer-array-compress-kit/ it's speed is 500 > (M int / sec). But to achieve, I have to modify index file format. And > I found http://wiki.apache.org/lucene-java/FlexibleIndexing in lucene > 4.0, it will support fore flexible index format. I want to know when > it will be released so as to decide whether wait it or doing it > myself. Thank you. > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
