Thanks Shawn, just to confirm your claim. Following your suggestion I have double checked my queries with grouping and faceting. Faceting and grouping became empty immediately after I have added docValues .
Thanks again for your support, Vincenzo On Fri, Apr 15, 2016 at 4:31 PM, Shawn Heisey <apa...@elyograg.org> wrote: > On 4/15/2016 7:42 AM, Vincenzo D'Amore wrote: > > I would like to add docValues to few fields definition in production. > > > > I first tried in a test environment during partial reindexing and it > seems > > have no effect, (i.e. no real benefits with small number of documents to > > reindex, 30% of total). > > Adding docValues requires a full reindex. If your index meets the > criteria for Atomic Updates, then you could do an atomic update on every > document, but either way, you're going to be indexing every document again. > > The problem with not reindexing is that certain Solr features will > switch to use docValues if the schema says the field has them ... but > until you reindex, your existing documents will not actually contain > docValues, so those features will not work on the majority of your > index. Those features will *not* fall back to indexed data if the > schema says docValues="true". > > The list of features that won't work right without a reindex is the list > of features that benefit from docValues (sorting, faceting, grouping), > so usually there's no reason to add docValues unless you're using at > least one of those features. > > Thanks, > Shawn > > -- Vincenzo D'Amore email: v.dam...@gmail.com skype: free.dev mobile: +39 349 8513251
