Error parsing field – 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 ” error parsing field ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index.

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 “error parsing field [“classname  is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

includeTo = true;
 if (parser.currentToken() != XContentParser.Token.VALUE_NULL) {
 to = rangeType.parseTo(fieldType; parser; coerce.value(); includeTo);
 } else {
 throw new MapperParsingException("error parsing field [" +
 name() + "]; with unknown parameter [" + fieldName + "]");
 range = new Range(rangeType; from; to; includeFrom; includeTo);


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