No fieldname specified for query – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 8.8-8.9

Briefly, this error occurs when an Elasticsearch query is executed without specifying a field name. This means that Elasticsearch doesn’t know which field to search for the provided value. To resolve this issue, you can either specify a field name in your query or use the “_all” field to search all fields. Additionally, ensure that the field you’re querying exists in your index. If you’re using a complex query, check for syntax errors or missing parts in your query structure.

This guide will help you check for common problems that cause the log ” No fieldname specified for query ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, query.

Log Context

Log “No fieldname specified for query” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 if (modelText == null) {
 throw new ParsingException(parser.getTokenLocation(); "No text specified for text query");
 }  if (fieldName == null) {
 throw new ParsingException(parser.getTokenLocation(); "No fieldname specified for query");
 }  TextExpansionQueryBuilder queryBuilder = new TextExpansionQueryBuilder(fieldName; modelText; modelId);


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