It make sense to have docValues=true for _root_ for uniqueBlock() On Thu, Nov 22, 2018 at 6:44 PM Vincenzo D'Amore <v.dam...@gmail.com> wrote:
> Hi guys, this is an interesting thread. > > Looking at schema.xml I found having uniqueKey (type="string") configured > as docValues="true" but, I also found that _root_ is > configured docValues="false" > > Is there any drawbacks in having _root_ with docValues="false" ? > > > On Thu, Nov 22, 2018 at 12:28 AM Erick Erickson <erickerick...@gmail.com> > wrote: > > > In SolrCloud there are a couple of places where it might be useful. > > First pass each replica collects the top N ids for the aggregator to > > sort. If the uniqueKey isn't DV, it needs to either decompress it off > > disk or build an structure on heap if it's not DV. Last I knew anyway. > > > > Best, > > Erick > > On Wed, Nov 21, 2018 at 12:04 PM Walter Underwood <wun...@wunderwood.org > > > > wrote: > > > > > > Is it a good idea to store the uniqueKey as docValues? A great idea? A > > maybe or maybe not idea? > > > > > > It looks like it will speed up export and streaming. Otherwise, I can’t > > find anything the docs pro or con. > > > > > > wunder > > > Walter Underwood > > > wun...@wunderwood.org > > > http://observer.wunderwood.org/ (my blog) > > > > > > > > -- > Vincenzo D'Amore > -- Sincerely yours Mikhail Khludnev
