Malformed content; after first object; either the type field – 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 analyzes 2 JSON files to detect many configuration errors.

To easily locate the root cause and resolve this issue try AutoOps for Elasticsearch & OpenSearch. It diagnoses problems by analyzing hundreds of metrics collected by a lightweight agent and offers guidance for resolving them.

This guide will help you check for common problems that cause the log ” Malformed content; after first object; either the type field ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index.


Log Context

Log “Malformed content; after first object; either the type field”classname  is DocumentParser.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

final XContentParser.Token token = parser.nextToken();
 if (token == XContentParser.Token.END_OBJECT) {
 // empty doc; we can handle it...
 return true;
 } else if (token != XContentParser.Token.FIELD_NAME) {
 throw new MapperParsingException("Malformed content; after first object; either the type field"
 + " or the actual properties should exist");
 }
 }
 return false;
 }

 

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