Rescore doesn’t support ” + fieldName + ” – Elasticsearch Error How To Solve Related Issues

Rescore doesn’t support ” + fieldName + ” – Elasticsearch Error How To Solve Related Issues

Updated: July-20

Elasticsearch 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 causing many errors 


This guide will help you check for common problems that cause the log “rescore doesn’t support ” + fieldName + “” 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: search.

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 discover the cause of many errors and provides suitable actionable recommendations (free tool that requires no installation). 

Log Context

Log”rescore doesn’t support [” + fieldName + “]”classname  is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

fieldName = parser.currentName();
  } else if (token.isValue()) {
  if (WINDOW_SIZE_FIELD.match(fieldName; parser.getDeprecationHandler())) {
  windowSize = parser.intValue();
  } else {
  throw new ParsingException(parser.getTokenLocation(); "rescore doesn't support [" + fieldName + "]");
  } else if (token == XContentParser.Token.START_OBJECT) {
  rescorer = parser.namedObject(RescorerBuilder.class; fieldName; null);
  } else {
  throw new ParsingException(parser.getTokenLocation(); "unexpected token [" + token + "] after [" + fieldName + "]");


Related issues to this log

We have gathered selected Q&A from the community and issues from Github, that can help fix related issues please review the following for further information :

1 elasticsearch boost importance of exact phrase match -views 16,952 ,score 20

Elasticsearch search query to retrieve all records NEST -views   14,738,score 7



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