Error parsing rank request – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Before you dig into reading this guide, have you tried asking OpsGPT what this log means? You’ll receive a customized analysis of your log.

Try OpsGPT now for step-by-step guidance and tailored insights into your Elasticsearch operation.

Briefly, this error occurs when Elasticsearch is unable to understand the rank request due to incorrect syntax or structure. This could be due to a malformed JSON, incorrect field names, or wrong data types. To resolve this issue, you should first validate your JSON structure. Then, ensure that the field names and data types match those defined in your Elasticsearch index. If you’re using a query DSL, make sure it’s correctly formatted. Lastly, check for any typos or missing elements in your request.

For a complete solution to your to your search operation, try for free AutoOps for Elasticsearch & OpenSearch . With AutoOps and Opster’s proactive support, you don’t have to worry about your search operation – we take charge of it. Get improved performance & stability with less hardware.

This guide will help you check for common problems that cause the log ” error parsing rank request ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index, request.

Log Context

Log “error parsing rank request” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 PARSER.declareString(ConstructingObjectParser.constructorArg(); TEMPLATE_ID_FIELD);
 PARSER.declareObject(ConstructingObjectParser.constructorArg(); (p; c) -> {
 try {
 return Script.parse(p; "mustache");
 } catch (IOException ex) {
 throw new ParsingException(p.getTokenLocation(); "error parsing rank request"; ex);


How helpful was this guide?

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?