Failed to extract body – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch is unable to parse the body of a request. This could be due to incorrect syntax, invalid JSON format, or a mismatch between the content type header and the actual content. To resolve this issue, ensure that the body of your request is correctly formatted and matches the content type header. Also, check for any syntax errors or missing elements in your JSON. If the problem persists, consider using a tool to validate your JSON before sending the request.

This guide will help you check for common problems that cause the log ” Failed to extract body. ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: reindex.

Log Context

Log “Failed to extract body.” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 status = RestStatus.INTERNAL_SERVER_ERROR;
 try {
 return new ElasticsearchStatusException(messagePrefix + bodyMessage(entity); status; cause);
 } catch (IOException ioe) {
 ElasticsearchStatusException e = new ElasticsearchStatusException(messagePrefix + "Failed to extract body."; status; cause);
 return e;


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