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 TextExpansionQueryBuilder.java. 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);
queryBuilder.queryName(queryName);
queryBuilder.boost(boost);
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