We ran into 1 snag during development with SOLR and I thought I'd run it by
anyone to see if they had any slick ways to solve this issue.
Basically, we're performing a SOLR query with grouping and want to be able
to sort by the number of documents found within each group.
Our query response from SOLR looks something like this:
{
"responseHeader":{
"status":0,
"QTime":17,
"params":{
"indent":"true",
"q":"*:*",
"group.limit":"0",
"group.field":"rfp_stub",
"group":"true",
"wt":"json",
"rows":"10000000"}},
"grouped":{
"rfp_stub":{
"matches":18470,
"groups":[{
"groupValue":"java.util.UUID:a1871c9e-cd7f-4e87-971d-d8a44effc33e",
"doclist":{"*numFound*":3,"start":0,"docs":[]
}},
{
"groupValue":"java.util.UUID:0c2f1045-a32d-4a4d-9143-e09db45a20ce",
"doclist":{"*numFound*":5,"start":0,"docs":[]
}},
{
"groupValue":"java.util.UUID:a3e1d56b-4172-4594-87c2-8895c5e5f131",
"doclist":{"*numFound*":6,"start":0,"docs":[]
}},
…
The *numFound* shows the number of documents within that group. Is there
anyway to perform a sort on *numFound* in SOLR ? I don't believe this is
supported, but wondered if anyone their has come across this and if there
was any suggested workarounds given that the dataset is really too large to
hold in memory on our app servers?
