this is not sharded collection, it only had one shard. I want to use collapse to replace current group query, but the result is not same, I feel there are some function issue in collapse plugin
2017-09-07 14:59 GMT-07:00 Erick Erickson <erickerick...@gmail.com>: > Is this a sharded collection? group.ngroups isn't supported (see the > docs, "group.ngroups and group.facet require that all documents in > each group must be co-located on the same shard") in sharded > situations so it's not surprising that the results differ. > > Best, > Erick > > On Thu, Sep 7, 2017 at 10:35 AM, Ray Niu <newry1...@gmail.com> wrote: > > Hello: > > I tried to use Collapsing Query Parser per following link: > > > > https://cwiki.apache.org/confluence/display/solr/ > Collapse+and+Expand+Results > > here is the query I am using > > http://<host_name>/solr/collection/select?q=groupId:*& > > fl=id,groupId,date&fq=%7B!collapse%20field=groupId% > 20sort=%27id%20asc%27%7D& > > expand=true&expand.rows=3&sort=date%20asc&expand.sort=id%20asc&rows=3 > > > > but I found the result is different from group query: > > http://<host_name>/solr/collection/select?q=groupId:*& > > fl=id,date,groupId&group=true&group.field=groupId&group. > > limit=4&group.ngroups=true&sort=date%20asc&group.sort=id%20asc&rows=3 > > > > it seems sort across collapsed document is not working. > > > > Can anyone help on this? >
