Malformed mapping; no type name found – How to solve this Elasticsearch error

Malformed mapping; no type name found – 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 ” malformed mapping; no type name found ” 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”malformed mapping; no type name found”classname  is DocumentMapperParser.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

private Tuple> extractMapping(String type; Map root) throws MapperParsingException {
  if (root.size() == 0) {
  if (type != null) {
  return new Tuple(type; root);
  } else {
  throw new MapperParsingException("malformed mapping; no type name found");
  }
  }
 
  String rootName = root.keySet().iterator().next();
  Tuple> mapping;

 

Run the Check-Up to get a customized report like this:

Analyze your cluster