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 <[email protected]> wrote: > On Fri, May 19, 2017 at 6:36 PM, Scott Blum <[email protected]> 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: [email protected] > For additional commands, e-mail: [email protected] > >
