Field_masking_span query must be of type span query – 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 query must be of type span query ” 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] query must be of type span query”classname  is FieldMaskingSpanQueryBuilder.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

currentFieldName = parser.currentName();
 } else if (token == XContentParser.Token.START_OBJECT) {
 if (QUERY_FIELD.match(currentFieldName; parser.getDeprecationHandler())) {
 QueryBuilder query = parseInnerQueryBuilder(parser);
 if (query instanceof SpanQueryBuilder == false) {
 throw new ParsingException(parser.getTokenLocation(); "[field_masking_span] query must be of type span query");
 }
 inner = (SpanQueryBuilder) query;
 } else {
 throw new ParsingException(parser.getTokenLocation(); "[field_masking_span] query does not support ["
 + currentFieldName + "]");

 

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