Unknown key for a ” + token + ” in ” + currentFieldName + “. – How to solve this Elasticsearch error

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Unknown key for a ” + token + ” in ” + currentFieldName + “. – 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 key for a ” + token + ” in ” + currentFieldName + “. ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: search.

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 key for a ” + token + ” in [” + currentFieldName + “].”classname  is FetchSourceContext.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

} else {
 throw new ParsingException(parser.getTokenLocation(); "Unknown key for a " + token
 + " in [" + currentFieldName + "]."; parser.getTokenLocation());
 }
 } else {
 throw new ParsingException(parser.getTokenLocation(); "Unknown key for a " + token + " in [" + currentFieldName + "].";
 parser.getTokenLocation());
 }
 }
 } else {
 throw new ParsingException(parser.getTokenLocation(); "Expected one of [" + XContentParser.Token.VALUE_BOOLEAN + "; "

 

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