Could not parse http request attachment – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

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Briefly, this error occurs when Elasticsearch is unable to parse an HTTP request attachment due to incorrect formatting or syntax. This could be due to a malformed JSON or a wrong query structure. To resolve this issue, you can: 1) Check the syntax of your HTTP request to ensure it’s correctly formatted. 2) Validate your JSON structure using a JSON validator. 3) Review your query structure to ensure it aligns with Elasticsearch’s query DSL. 4) Check for any unsupported characters or data types in your request.

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This guide will help you check for common problems that cause the log ” Could not parse http request attachment ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, request.

Log Context

Log “Could not parse http request attachment” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 if (requestTemplate != null) {
 return new HttpRequestAttachment(id; requestTemplate; inline; contentType);
 }  throw new ElasticsearchParseException("Could not parse http request attachment");
 }  @Override
 public Attachment toAttachment(WatchExecutionContext context; Payload payload; HttpRequestAttachment attachment) throws IOException {
 Map model = Variables.createCtxParamsMap(context; payload);


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