: Does anybody know for sure whether the stats component fully supports : distributed mode? It is listed in the doc as supporting distributed mode
it's been supported for as long as i can remember -- since Day 1 of the StatsComponent i believe. : (at least for old, non-SolrCloud distrib mode), but... I don't see any code : that actually does that. Nor any tests, unless they are hidden somewhere I : didn't look. just like any other SearchComponent: look at StatsComponent.prepare, StatsComponent.process, ...distributedProcess, ....modifyRequest, ...handleResponses, ...finishStage, etc... : In particular, I am interested in the "countdistinct" parameter which would : need to retrieve all distinct values from all other shards to detect : whether any of the distinct values overlap between shards. yep -- that's exactly what it does ... totally naive and not a good idea at all for fields with non-trivial cardinality, which is why you have to explicitly turn it on with "calcDistinct" and why i wnat to replace it with HyperLogLog approximations... https://issues.apache.org/jira/browse/SOLR-6968 -Hoss http://www.lucidworks.com/
