Illegal field ” + multiFieldName + “; only fields can be specified inside fields – Elasticsearch Error How To Solve Related Issues


Illegal field ” + multiFieldName + “; only fields can be specified inside fields – 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 ” illegal field ” + multiFieldName + “; only fields can be specified inside fields ” 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: 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”illegal field [” + multiFieldName + “]; only fields can be specified inside fields”classname  is TypeParsers.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

if (multiFieldName.contains(".")) {
  throw new MapperParsingException("Field name [" + multiFieldName + "] which is a multi field of [" + name + "] cannot" +
  " contain '.'");
  }
  if (!(multiFieldEntry.getValue() instanceof Map)) {
  throw new MapperParsingException("illegal field [" + multiFieldName + "]; only fields can be specified inside fields");
  }
  Map multiFieldNodes = (Map) multiFieldEntry.getValue();
 
  String type;
  Object typeNode = multiFieldNodes.get("type");

 

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