You can use the IndexUpgradeTool that ships with each version of Solr (well, actually Lucene) to, well, upgrade your index. So you can use the IndexUpgradeTool that ships with 5x to upgrade from 4x. And the one that ships with 6x to upgrade from 5x. etc.
That said, none of that is necessary _if_ you > have the Lucene version in solrconfig.xml be the one that corresponds to your > current Solr. I.e. a solrconfig for 6x should have a luceneMatchVersion of > 6something. > you update your index enough to rewrite all segments before moving to the > _next_ version. When Lucene sees merges a segment, it writes the new segment > according to the luceneMatchVersion in solrconfig.xml. So as long as you are > on a version long enough for all segments to be merged into new segments, you > don't have to worry. Best, Erick On Thu, Oct 12, 2017 at 8:29 PM, Harry Yoo <hyunat...@gmail.com> wrote: > I should have read this. My project has been running from apache solr 4.x, > and moved to 5.x and recently migrated to 6.6.1. Do you think solr will take > care of old version indexes as well? I wanted to make sure my indexes are > updated with 6.x lucence version so that it will be supported when i move to > solr 7.x > > Is there any best practice managing solr indexes? > > Harry > >> On Sep 22, 2015, at 8:21 PM, Walter Underwood <wun...@wunderwood.org> wrote: >> >> Don’t do anything. Solr will automatically clean up the deleted documents >> for you. >> >> wunder >> Walter Underwood >> wun...@wunderwood.org >> http://observer.wunderwood.org/ (my blog) >> >> >>> On Sep 22, 2015, at 6:01 PM, CrazyDiamond <crazy_diam...@mail.ru> wrote: >>> >>> my index is updating frequently and i need to remove unused documents from >>> index after update/reindex. >>> Optimizaion is very expensive so what should i do? >>> >>> >>> >>> -- >>> View this message in context: >>> http://lucene.472066.n3.nabble.com/is-there-a-way-to-remove-deleted-documents-from-index-without-optimize-tp4230691.html >>> Sent from the Solr - User mailing list archive at Nabble.com. >> >
