[SOLR-10383] NPE on debug query in SOLR UI - LTR OriginalScoreFeature

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 6.4, 6.4.1, 6.4.2, 6.5
• Fix Version/s: 6.5.1, 6.6, 7.0
• Assignee: Christine Poerschke
• Reporter: Vitezslav Zak
• Created: 29/Mar/17 06:41
• Updated: 08/Jun/19 15:32
• Resolved: 03/Apr/17 12:52

Description

Hi,

there is a NPE if I want to debug query in SOLR UI.

I'm using LTR for reranking result.

My features:

{
  "initArgs":{},
  "initializedOn":"2017-03-29T05:32:52.160Z",
  "updatedSinceInit":"2017-03-29T05:56:28.721Z",
  "managedList":[
    {
      "name":"documentRecency",
      "class":"org.apache.solr.ltr.feature.SolrFeature",
      "params":{"q":"{!func}recip( ms(NOW,initial_release_date), 3.16e-11, 1, 1)"},
      "store":"_DEFAULT_"},
    {
      "name":"niceness",
      "class":"org.apache.solr.ltr.feature.SolrFeature",
      "params":{"fq":["{!func}recip(niceness, 0.1, 1, 1)"]},
      "store":"_DEFAULT_"},
    {
      "name":"originalScore",
      "class":"org.apache.solr.ltr.feature.OriginalScoreFeature",
      "params":null,
      "store":"_DEFAULT_"}]}

My model:

{
  "initArgs":{},
  "initializedOn":"2017-03-29T05:32:52.167Z",
  "updatedSinceInit":"2017-03-29T05:54:26.100Z",
  "managedList":[{
      "name":"myModel",
      "class":"org.apache.solr.ltr.model.LinearModel",
      "store":"_DEFAULT_",
      "features":[
        {
          "name":"documentRecency",
          "norm":{"class":"org.apache.solr.ltr.norm.IdentityNormalizer"}},
        {
          "name":"niceness",
          "norm":{"class":"org.apache.solr.ltr.norm.IdentityNormalizer"}},
        {
          "name":"originalScore",
          "norm":{"class":"org.apache.solr.ltr.norm.IdentityNormalizer"}}],
      "params":{"weights":{
          "documentRecency":0.1,
          "niceness":1.0,
          "originalScore":0.5}}}]}

NPE occurs in this method, where docInfo is null.

OriginalScoreFeature.java

@Override
      public float score() throws IOException {
        // This is done to improve the speed of feature extraction. Since this
        // was already scored in step 1
        // we shouldn't need to calc original score again.
        final DocInfo docInfo = getDocInfo();
        return (docInfo.hasOriginalDocScore() ? docInfo.getOriginalDocScore() : originalScorer.score());
      }

Issue Links

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