Field name ” + multiFieldName + ” which is a multi field of ” + name + ” cannot – How to solve this Elasticsearch error

Field name ” + multiFieldName + ” which is a multi field of ” + name + ” cannot – How to solve this Elasticsearch error

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 ” Field name ” + multiFieldName + ” which is a multi field of ” + name + ” cannot ” 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”Field name [” + multiFieldName + “] which is a multi field of [” + name + “] cannot”classname  is TypeParsers.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

}
 
  for (Map.Entry multiFieldEntry : multiFieldsPropNodes.entrySet()) {
  String multiFieldName = multiFieldEntry.getKey();
  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");
  }

Run the Check-Up to get customized recommendations like this:

error

Heavy merges detected in specific nodes

error-img

Description

A large number of small shards can slow down searches and cause cluster instability. Some indices have shards that are too small…

error-img

Recommendations Based on your specific ES deployment you should…

Based on your specific ES deployment you should…

1

X-PUT curl -H [a customized recommendation]

 

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