>From my reading of the solr docs (e.g.
>https://cwiki.apache.org/confluence/display/solr/Collapse+and+Expand+Results
>and https://cwiki.apache.org/confluence/display/solr/Result+Grouping), I've
>been under the impression that these two methods (result grouping and
>collapsing query parser) can
Your findings are the expected behavior for the Collapsing qparser. The
Collapsing qparser requires records in the same collapsed field to be
located on the same shard. The typical approach for this is to use
composite Id routing to ensure that documents with the same collapse field
land on the sam
One of things to keep in mind with Grouping is that if you are relying on
an accurate group count (ngroups) then you will also have to collocate
documents based on the grouping field.
The main advantage to the Collapsing qparser plugin is it provides fast
field collapsing on high cardinality field
l Bernstein [mailto:joels...@gmail.com]
Sent: Monday, August 03, 2015 10:51 PM
To: solr-user@lucene.apache.org
Subject: Re: Collapsing Query Parser returns one record per shard...was not
expecting this...
One of things to keep in mind with Grouping is that if you are relying on an
accurate group coun
