Malformed – How to solve this Elasticsearch error

Malformed – 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 ” 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 and aggregations.

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 [“classname  is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

if (Double.isNaN(lon)) {
  lon = parser.doubleValue();
  } else if (Double.isNaN(lat)) {
  lat = parser.doubleValue();
  } else {
  throw new ParsingException(parser.getTokenLocation(); "malformed [" + ORIGIN_FIELD.getPreferredName()
  + "]: a geo point array must be of the form [lon; lat]");
  return new GeoPoint(lat; lon);


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

Analyze your cluster