Error parsing field name expected an object but got – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.16-8.7

Briefly, this error occurs when Elasticsearch expects a JSON object for a specific field but receives a different data type instead. This could be due to incorrect data input or mapping. To resolve this, ensure that the data type of the input matches the mapping defined in Elasticsearch. If the mapping is incorrect, you may need to reindex your data with the correct mapping. Also, check your data source to ensure it’s providing data in the expected format.

This guide will help you check for common problems that cause the log ” error parsing field [” + name() + “]; expected an object but got ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index.

Log Context

Log “error parsing field [” + name() + “]; expected an object but got ” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 range = new Range(rangeType; from; to; includeFrom; includeTo);
 } else if (fieldType().rangeType == RangeType.IP && start == XContentParser.Token.VALUE_STRING) {
 range = parseIpRangeFromCidr(parser);
 } else {
 throw new MapperParsingException("error parsing field [" + name() + "]; expected an object but got " + parser.currentName());
 context.doc().addAll(fieldType().rangeType.createFields(context; name(); range; index; hasDocValues; store));  if (hasDocValues == false && (index || store)) {