Erick, Thank you very much. Is there any performance comparison between these two versions? Is there any data on the performance?
Thank you very much Best Regards --- Shuangyang Yang linkedin.com/in/everyoung <www.linkedin.com/in/everyoung> On 7/17/15, 10:06 AM, "Erick Erickson" <erickerick...@gmail.com> wrote: >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 > --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
