Launching the following query against a sharded Solr 4.7 installation in EC2 yields a 'Specify the group.field as parameter or local parameter' error:
http://my_solr_instance:8983/solr/core_name/select/?q=*:mozart&facet=true&facet.field=publisher_facet&facet.field=publication_year_facet&f.publication_year_facet.facet.limit=1000000&f.publication_year_facet.facet.range.start=1700&f.publication_year_facet.facet.range.end=2014&f.publication_year_facet.facet.range.gap=10&f.publication_year_facet.facet.range.other=before&fq=collection_id:LIBI-BFobject_type:bibliographic_entity&start=0&rows=1&group=true&group.facet=true&group.field=group_id&timeAllowed=30000&facet.range=publication_year_facet&version=2.2&wt=json The error mystifies me. The error appears to be complaining that the 'group.field' parameter hasn't been specified - however, it is clearly present in the query. Curiously, the error goes away if I substitute another facet field of the same datatype for 'facet.field=publisher_facet'. For instance, if I change this to 'facet.field=language_facet' the query behaves as expected. >From the documentation I got the idea that the 'shards' parameter would have to be specified. This throws off the counts - and leaves the error intact. Any ideas what could be going wrong here? Thanks much, Tim Hill
