Unsupported field ” + fieldName + ” – 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 ” unsupported field ” + fieldName + ” ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

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 “unsupported field [” + fieldName + “]”classname  is BasicAuth.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

if (Field.USERNAME.getPreferredName().equals(fieldName)) {
 username = parser.text();
 } else if (Field.PASSWORD.getPreferredName().equals(fieldName)) {
 password = WatcherXContentParser.secretOrNull(parser);
 } else {
 throw new ElasticsearchParseException("unsupported field [" + fieldName + "]");
 }
 } else {
 throw new ElasticsearchParseException("unsupported token [" + token + "]");
 }
 }

 

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