Function score query returned an invalid score: ” + finalScore + ” for doc: – How to solve this Elasticsearch error

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Function score query returned an invalid score: ” + finalScore + ” for doc: – How to solve this Elasticsearch error

Opster Team

March-22, Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” function score query returned an invalid score: ” + finalScore + ” for doc: ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: search, query, lucene.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

Log Context

Log “function score query returned an invalid score: ” + finalScore + ” for doc:”classname  is FunctionScoreQuery.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

if (finalScore < 0f || Float.isNaN(finalScore)) {
 /*
 These scores are invalid for score based {@link org.apache.lucene.search.TopDocsCollector}s.
 See {@link org.apache.lucene.search.TopScoreDocCollector} for details.
 */
 throw new ElasticsearchException("function score query returned an invalid score: " + finalScore + " for doc: " + docId);
 }
 return finalScore;
 } 
 protected double computeScore(int docId; float subQueryScore) throws IOException {

 

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