Constant_score requires a ‘filter’ element – Elasticsearch Error How To Solve Related Issues


Constant_score requires a ‘filter’ element – Elasticsearch Error How To Solve Related Issues

Opster Team

July-20, Version: 1.7-8.0

 

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

This guide will help you check for common problems that cause the log ” constant_score requires a ‘filter’ element ” to appear. It’s important to understand the issues related to the log, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: query and index.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up which analyses ES to pinpoint the cause of many errors and provides suitable actionable recommendations how to resolve them (free tool that requires no installation).

Log Context

Log”[constant_score] requires a ‘filter’ element”classname  is ConstantScoreQueryBuilder.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

} else {
  throw new ParsingException(parser.getTokenLocation(); "unexpected token [" + token + "]");
  }
  }
  if (!queryFound) {
  throw new ParsingException(parser.getTokenLocation(); "[constant_score] requires a 'filter' element");
  }
 
  ConstantScoreQueryBuilder constantScoreBuilder = new ConstantScoreQueryBuilder(query);
  constantScoreBuilder.boost(boost);
  constantScoreBuilder.queryName(queryName);

 

Optimize Elasticsearch Performance

Try The Tool