Hi Bryan, This is a known limitations of the grouping. https://wiki.apache.org/solr/FieldCollapsing#RequestParameters
group.ngroups: *WARNING: If this parameter is set to true on a sharded environment, all the documents that belong to the same group have to be located in the same shard, otherwise the count will be incorrect. If you are using SolrCloud <https://wiki.apache.org/solr/SolrCloud>, consider using "custom hashing"* Cheers, Jim 2014-08-21 21:44 GMT+02:00 Bryan Bende <bbe...@gmail.com>: > Is there any known issue with using group.ngroups in a distributed Solr > using version 4.8.1 ? > > I recently upgraded a cluster from 4.6.1 to 4.8.1, and I'm noticing several > queries where ngroups will be more than the actual groups returned in the > response. For example, ngroups will say 5, but then there will be 3 groups > in the response. It is not happening on all queries, only some. >
