Failed to parse; document is empty – 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.

Briefly, this error occurs when Elasticsearch is unable to parse a document, and the document is empty. This can be due to an issue with the data format or a problem with the document itself. To resolve this issue, you can check the format of the data and ensure that the document is not empty.

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 ” failed to parse; document is empty ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index and document.

Log Context

Log “failed to parse; document is empty”classname  is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

return (MapperParsingException) e;
 // Throw a more meaningful message if the document is empty.
 if (source.source() != null && source.source().length() == 0) {
 return new MapperParsingException("failed to parse; document is empty");
 return new MapperParsingException("failed to parse"; e);


See how you can use AutoOps to resolve issues

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