Please look at the CHANGES.txt file for Solr and/or Lucene, there's a "New Features" section for every release.
Best, Erick On Fri, Jul 17, 2015 at 7:55 AM, Shuangyang Yang <sy...@linkedin.com.invalid> wrote: > Erick, Amish, > > Thank you very much for your reply. They are really helpful. Can you tell > me what are the compelling features from 2.9.1 to 5.X? I¹m sure there are > many. > > Thank you very much > Best Regards > --- > Shuangyang Yang > > linkedin.com/in/everyoung <www.linkedin.com/in/everyoung> > > > > > On 7/16/15, 8:41 PM, "Erick Erickson" <erickerick...@gmail.com> wrote: > >>You have two real choices here: >>1> reindex your corpus under 5x >>2> follow a tortuous upgrade path. Solr/Lucene only promise to >>be backwards compatible through one major version. Thus >>Lucene 3x can read Lucene 2x. But Lucene 4x cannot read >>read Lucene 2x. >> >>So you'd have to go 2x->3x->4x->5x with chances for mis-steps >>all along the way. >> >>Best, >>Erick >> >>On Thu, Jul 16, 2015 at 8:27 PM, Shah, Amish <amish.s...@intel.com> wrote: >>> No, the file format is not compatible. I think it changed in 4.0. >>> >>> Amish >>> >>> On 7/16/15, 6:45 PM, "Shuangyang Yang" <sy...@linkedin.com.INVALID> >>>wrote: >>> >>>>Hi there, >>>> >>>>We are using lucene 2.9.1 in our product and thinking of upgrading to >>>>5.X. Is it plausible? Is the file format compatible? Is there any guide >>>>document that can give tips on how to do it? >>>> >>>>Thank you very much >>>>Best Regards >>>>--- >>>>Shuangyang Yang >>>>linkedin.com/in/everyoung<www.linkedin.com/in/everyoung> >>> >>> >>> --------------------------------------------------------------------- >>> To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org >>> For additional commands, e-mail: java-user-h...@lucene.apache.org >>> >> >>--------------------------------------------------------------------- >>To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org >>For additional commands, e-mail: java-user-h...@lucene.apache.org >> > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
