[SOLR-10283] SolrFeature fails to reject searches with missing efi (if used by fq)

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 6.4, 6.4.1, 6.4.2
• Fix Version/s: 6.5, 7.0
• Assignee: Christine Poerschke
• Reporter: Christine Poerschke
• Created: 14/Mar/17 16:31
• Updated: 08/Jun/19 15:30
• Resolved: 19/Apr/17 20:26

Description

My intention had been to update the Solr Reference Guide's Learning To Rank section w.r.t. External Feature Information i.e. https://cwiki.apache.org/confluence/display/solr/Learning+To+Rank#LearningToRank-ExternalFeatureInformation based on the https://lists.apache.org/thread.html/17547c1487067804077b1933ccde28d68841ec1694f6776c5682f28e@%3Csolr-user.lucene.apache.org%3E user mailing list thread.

In the process I noticed that configuring a feature such as this

{
  "store" : "myEfiFeatureStore",
  "name" : "isPreferredManufacturer",
  "class" : "org.apache.solr.ltr.feature.SolrFeature",
  "params" : { "fq" : [ "{!field f=manu}${preferredManufacturer}" ] }
}

and then not passing efi.preferredManufacturer=something is not rejected and instead a score of 1.0 is returned for the feature.

This seems unexpected i.e. a bug.

Issue Links

• is related to: SOLR-8542 Integrate Learning to Rank into Solr