Hi Scott, You may find this ticket interesting: https://issues.apache.org/jira/browse/SOLR-10651
Joel Bernstein http://joelsolr.blogspot.com/ On Sun, May 21, 2017 at 5:08 PM, Scott Blum <dragonsi...@gmail.com> wrote: > Thanks, Yonik! Glad to hear I'm not completely crazy. We should probably > update to 6.x and try out streaming. > > On Sat, May 20, 2017 at 7:13 AM, Yonik Seeley <ysee...@gmail.com> wrote: > >> On Fri, May 19, 2017 at 6:36 PM, Scott Blum <dragonsi...@gmail.com> >> wrote: >> > Hi folks, >> > >> > I think I'm missing something fundamental about how subfacets work and >> > relate to each other. I don't really understand when it's legal to >> > reference a subfacet, and when it's not. >> > >> > For example, here's a simple subfacet example from >> > http://yonik.com/solr-subfacets/ >> > >> > top_authors:{ >> > type: terms, >> > field: author, >> > limit: 7, >> > sort: "revenue desc", >> > facet:{ >> > revenue: "sum(sales)" >> > } >> > } >> > >> > >> > Notice how "revenue" is referenced from top_authors.sort? The thing >> is, I >> > haven't seen any examples where the subfacet is referenced *except* for >> > sort. >> >> That's currently all we can do. >> There's an issue open for filtering buckets by calculated metrics, but >> I don't think that addresses what you're talking about. >> >> > What I'm actually trying to accomplish is doing some post-processing >> with >> > the aggregation functions. But I don't want to aggregate at the "leaf >> > buckets" -- I'm trying to aggregate *across* buckets at a higher level. >> >> Some small subset may be covered by >> https://issues.apache.org/jira/browse/SOLR-8998 child rollups >> or https://issues.apache.org/jira/browse/SOLR-10545 compound field >> faceting >> >> But the streaming expressions is more likely the right solution for >> more general purpose computation. If there is a common enough >> faceting usecase that needs to be faster, we can look at how to fit it >> into the JSON Facet API. Some of the streaming expressions stuff >> already starts off with faceting as the source for its input stream. >> >> -Yonik >> >> >> >> > You >> > could think of this as similar to the "reduce" phase of a map-reduce. >> > >> > In other words, I know how to fan *out* with subfacets to create more >> > buckets; what I don't know is how to then reduce those buckets into >> > aggregate statistics about the buckets. >> > >> > What am I missing? >> > >> > Thanks! >> > Scott >> > >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org >> For additional commands, e-mail: dev-h...@lucene.apache.org >> >> >
