[SOLR-15479] rq/rerank does not properly adjust maxScore

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Assignee: Unassigned
• Reporter: Chris M. Hostetter
• Created: 15/Jun/21 17:07
• Updated: 23/Jun/21 13:49

Description

When the rq param is used to re-rank top scoring documents, the maxScore of the result set is not updated accordingly...

$ bin/solr -e techproducts
...
$ curl 'http://localhost:8983/solr/techproducts/select?fl=id,score&omitHeader=true' -F 'q=id:IW-02'
{
  "response":{"numFound":1,"start":0,"maxScore":1.4050193,"numFoundExact":true,"docs":[
      {
        "id":"IW-02",
        "score":1.4050193}]
  }}
$ curl 'http://localhost:8983/solr/techproducts/select?fl=id,score&omitHeader=true' -F 'q=id:IW-02' -F 'rq={!rerank reRankQuery=$x}' -F 'x=manu:Belkin'
{
  "response":{"numFound":1,"start":0,"maxScore":1.4050193,"numFoundExact":true,"docs":[
      {
        "id":"IW-02",
        "score":3.9578552}]
  }}