We use pagination (start/rows) frequently with our queries. Nothing unusual there.
Now we have need to use grouping with a request like this, for a set-mode search, where only one document from each set is returned: http://idxb1.REDACTED.com:8981/solr/ncmain/lbcheck?q=*:*&group=true&group.field=set_name&group.sort=set_lead%20desc&group.limit=1&rows=50 We've worked through most of the problems encountered with this idea. The first page of results works perfectly. The remaining problem is that I cannot seem to paginate -- set the start value to 50, 100, etc. I found some information saying that group.ngroups=true is required for pagination, so I added that. I have found that occasionally I can load page two (rows=50&start=50), but that *most* of the time, I can't even get page two to load, and further pages have never worked. The response contains no documents. The index is distributed (sharded), but not running SolrCloud. The server where I am trying this is running a SNAPSHOT build of 4.9. I haven't had an opportunity yet to try a newer version -- we don't have newer versions on any of the machines for this index. I can only upgrade as far as 5.3, because that's as far as we can go with a third-party plugin we are using. I found the following issue, which says it was fixed before 4.0 was released: https://issues.apache.org/jira/browse/SOLR-2207 Does anyone know whether pagination with grouping is expected to work, and if so, how to do it? Thanks, Shawn
