Awesome, thanks - that puts me a lot more at ease. On Thu, Jan 19, 2012 at 2:59 PM, Uwe Schindler <u...@thetaphi.de> wrote:
> Lucene 3.5 can read any index going back to 2.0. The IndexUpgrader is only > needed to "forcefully" upgrade indexes for maximum performance and safe > migration to Lucene 4.0 (that can only read indexs >= 3.0). > > ----- > Uwe Schindler > H.-H.-Meier-Allee 63, D-28213 Bremen > http://www.thetaphi.de > eMail: u...@thetaphi.de > > > > -----Original Message----- > > From: David Carlton [mailto:carl...@sumologic.com] > > Sent: Thursday, January 19, 2012 8:02 PM > > To: java-user@lucene.apache.org > > Subject: any tips for upgrading Lucene 3.0.3 -> 3.5.0? > > > > I'm hoping to upgrade Lucene on a local code base from 3.0.3 to 3.5.0; is > there > > a good guide out there for particular pitfalls that I should worry about? > I've > > skimmed the ChangeLogs; the mention of an index upgrade tool made me > > wonder: has the index format changed between those versions? If so, > what's > > the best way to handle that without reindexing? (I was assuming that I'd > be > > able to be careful about where I pass in VERSION_30 and where I pass in > > VERSION_35, but looking through the current code, there actually are > basically > > no non-test situations where we pass in a version number at all - e.g. we > only > > use QueryParser for test code - so maybe I don't have to worry about > > incompatibilities?) Any other gotchas that won't be obvious from > compilation > > failures and straightforward sanity check test failures? > > (We do have tests that run basic queries on sample input.) Are there > > intermediate versions that we should try, e.g. 3.0.3 -> 3.4.0 -> 3.5.0 > instead of > > going straight from 3.0.3 to 3.5.0? > > > > If it matters: the one unusual Lucene usage that we have is that we've > written > > our own Tokenizer. > > > > Thanks for any pointers that people have. > > > > -- > > David Carlton > > carl...@sumologic.com > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > > -- David Carlton carl...@sumologic.com
