On Nov 8, 2012, at 5:35 PM, "Wu, Stephen T., Ph.D." <[email protected]> wrote: > nice! i think lucene 4.0.0 is worth the switch for downstream > tasks/retrieval, but currently we don't use lucene for much. given that it > shouldn't be too much refactoring (james can comment -- he recently did a > conversion from 3.6.1 to 4.0.0), i vote we go to 4.0.0.
I'd also vote for 4.0.0 if it's not too much trouble. It's a lot faster and uses less memory, among other things: http://ostatic.com/blog/guest-post-under-the-hood-in-apache-lucene-4-0 Steve > ________________________________________ > From: [email protected] > [[email protected]] on behalf of > Steven Bethard [[email protected]] > Sent: Wednesday, November 07, 2012 10:25 PM > To: [email protected] > Subject: Re: Upgrading Lucene Indexes > > On Nov 7, 2012, at 10:05 PM, "Chen, Pei" <[email protected]> > wrote: >> No need to rebuild Lucene indexes, we can just use the upgrade tool :) with >> a single command. I'll give this a try on the OrangeBook and any other >> indexes created with older versions of Lucene. >> This is an easy-to-use tool that upgrades all segments of an index from >> previous Lucene versions to the current segment file format. It can be used >> from command line: >> java -cp lucene-core.jar org.apache.lucene.index.IndexUpgrader >> [-delete-prior-commits] [-verbose] indexDir > > Awesome! > > What version of Lucene are we upgrading to? 3.6.1? That's the latest from the > 3.X series. The current version is 4.0.0, but that probably involves some > code updates as well. > > Keeping up with Lucene releases and API changes is a full time job. ;-) > > Steve >
