Michael is correct, that was what was said at the bootcamp (by me). I believe this may not be correct though.
Further code review shows that Solr 4.0 was already distributing documents using the hash range technique used in 4.1. The big change in 4.1 was that a composite hash key could be used to distribute docs around the hash range. But docs that don't use the composite key would be distributed similarly to 4.0. So, you may not need to re-index to take advantage of shard splitting. This will become more clear as shard splitting documentation becomes available. On Mon, Feb 11, 2013 at 12:45 PM, Michael Della Bitta < michael.della.bi...@appinions.com> wrote: > Arkadi, > > That's the answer I received at Solr Bootcamp, yes. > > Michael Della Bitta > > ------------------------------------------------ > Appinions > 18 East 41st Street, 2nd Floor > New York, NY 10017-6271 > > www.appinions.com > > Where Influence Isn’t a Game > > > On Mon, Feb 11, 2013 at 2:23 AM, Arkadi Colson <ark...@smartbit.be> wrote: > > Does it mean that when you redo indexing after the upgrade to 4.1 shard > > splitting will work in 4.2? > > > > Met vriendelijke groeten > > > > Arkadi Colson > > > > Smartbit bvba • Hoogstraat 13 • 3670 Meeuwen > > T +32 11 64 08 80 • F +32 11 64 08 81 > > > > On 02/10/2013 05:21 PM, Michael Della Bitta wrote: > > > > No. You can just update Solr in place. But... > > > > If you're using Solr Cloud, your documents won't be hashed in a way > > that lets you do shard splitting in 4.2. That seemed to be the > > consensus during Solr Boot Camp. > > > > Michael Della Bitta > > > > ------------------------------------------------ > > Appinions > > 18 East 41st Street, 2nd Floor > > New York, NY 10017-6271 > > > > www.appinions.com > > > > Where Influence Isn’t a Game > > > > > > On Sun, Feb 10, 2013 at 10:46 AM, adfel70 <adfe...@gmail.com> wrote: > > > > Do I have to recreate the collections/cores? > > Do I have to reindex? > > > > thanks. > > > > > > > > -- > > View this message in context: > > > http://lucene.472066.n3.nabble.com/Do-I-have-to-reindex-when-upgrading-from-solr-4-0-to-4-1-tp4039560.html > > Sent from the Solr - User mailing list archive at Nabble.com. > > > > > -- Joel Bernstein Professional Services LucidWorks
