Adding Yonik, I almost implemented custom aggregate function using new facet API but later on got runtime exceptions as "FacetContext" is not public. so looks like Facet api components can't be created as external plugins.
I am successful using AnalyticsQueryAPI to perform what I want. Yonik can you help me figure about differences between Solr analytics API vs JSON Facet API? On Fri, Mar 18, 2016 at 8:52 AM, sudsport s <sudssf2...@gmail.com> wrote: > Thanks Joel for responding. > but I am still not sure when to use Solr analytics API i vs JSON facet API > (What is difference between ValueSource vs PostFilter) > > I know that ValueSource is useful to implement functions. > > On Wed, Mar 16, 2016 at 9:49 AM, sudsport s <sudssf2...@gmail.com> wrote: > >> Hi , >> >> I am planning to write custom aggregator in solr which will use some >> probabilistic data structures per shard to accumate results and then after >> shard merging results will be sent to user as integer. >> >> I explored 2 options to do this >> >> 1. Solr analytics API >> https://cwiki.apache.org/confluence/display/solr/AnalyticsQuery+API >> >> I can implement merge policy and post filter to perform aggregation , I >> have example working using this , but I am not sure if it is ok to pass >> objects which > 1 MB in shard response? >> does solr use javabin serialization to optimize data gathering from >> shards? >> then leader shard will collect these 1 MB probabilistic data structures & >> produce count which will be included in response. >> >> >> 2. JSON Facet API http://yonik.com/json-facet-api/ >> >> After looking at >> https://github.com/apache/lucene-solr/tree/master/solr/core/src/java/org/apache/solr/search/facet >> >> FacetProcessor.java seems very similar to Solr analytics API. >> seems like merging happens similar way where response will include >> objects like hll and merge them >> >> >> >> >> >> one key difference is Solr analytics API is based on postFilter and JSON >> facet API is based on ValueSource but I dont understand impact of using one >> or the other. >> >> >> Can someone help me out? >> >> >> >
