Field_masking_span must have field set for it – 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 ” field_masking_span must have field set for it ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: query and index.

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 “field_masking_span must have [field] set for it”classname  is FieldMaskingSpanQueryBuilder.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

}
 if (inner == null) {
 throw new ParsingException(parser.getTokenLocation(); "field_masking_span must have [query] span query clause");
 }
 if (field == null) {
 throw new ParsingException(parser.getTokenLocation(); "field_masking_span must have [field] set for it");
 } 
 FieldMaskingSpanQueryBuilder queryBuilder = new FieldMaskingSpanQueryBuilder(inner; field);
 queryBuilder.boost(boost);
 queryBuilder.queryName(queryName);

 

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