Unknown field found – 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 Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” unknown field found ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: Node.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

Log Context

Log “unknown field found”classname  is XContentParserUtils.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

throw new ParsingException(parser.getTokenLocation(); String.format(Locale.ROOT; message; fieldName; currentName));
 * @throws ParsingException with a "unknown field found" reason
 public static void throwUnknownField(String field; XContentLocation location) {
 String message = "Failed to parse object: unknown field [%s] found";
 throw new ParsingException(location; String.format(Locale.ROOT; message; field));


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