Failed to parse query type unknown type – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch fails to recognize the query type specified in the request. This could be due to a typo, incorrect syntax, or the use of a query type that doesn’t exist. To resolve this issue, you should first verify the query type you’re using is valid and correctly spelled. If the error persists, check your query syntax to ensure it’s correctly structured. Lastly, ensure you’re using a query type that is supported by your version of Elasticsearch, as some types may be deprecated or not yet implemented.

This guide will help you check for common problems that cause the log ” failed to parse [{}] query type [{}]. unknown type. ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: query, index.

Log Context

Log “failed to parse [{}] query type [{}]. unknown type.” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 type = t;
 if (type == null) {
 throw new ElasticsearchParseException("failed to parse [{}] query type [{}]. unknown type."; NAME; value);
 return type;
 }  public static Type readFromStream(StreamInput in) throws IOException {


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