Unknown field name currentFieldName – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-7.17

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Briefly, this error occurs when Elasticsearch tries to process a query or document that contains a field not defined in the index mapping. This could be due to a typo in the field name or an attempt to use a field that doesn’t exist. To resolve this issue, you can either correct the field name in your query or document, or update your index mapping to include the new field. If the field is not necessary, you can remove it from your query or document.

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

Log Context

Log “unknown field name [” + currentFieldName + “]” class name is AbstractRepository.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 }
 } else {
 throw new ElasticsearchParseException("expected array for [" + currentFieldName + "]");
 }
 } else {
 throw new ElasticsearchParseException("unknown field name  [" + currentFieldName + "]");
 }
 }
 } else {
 throw new ElasticsearchParseException("start object expected");
 }

 

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