+ NAME + no join field has been configured – How to solve this Elasticsearch error

Opster Team

July-20, Version: 1.7-8.0

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This guide will help you check for common problems that cause the log ” + NAME + no join field has been configured ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: join and query.

Log Context

Log “[” + NAME + “] no join field has been configured”classname  is HasChildQueryBuilder.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

ParentJoinFieldMapper joinFieldMapper = ParentJoinFieldMapper.getMapper(context.getMapperService());
 if (joinFieldMapper == null) {
 if (ignoreUnmapped) {
 return new MatchNoDocsQuery();
 } else {
 throw new QueryShardException(context; "[" + NAME + "] no join field has been configured");
 ParentIdFieldMapper parentIdFieldMapper = joinFieldMapper.getParentIdFieldMapper(type; false);
 if (parentIdFieldMapper != null) {


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