Before you begin reading this guide, we recommend you try running the Elasticsearch Error Check-Up which analyzes 2 JSON files to detect many configuration errors.
To easily locate the root cause and resolve this issue try AutoOps for Elasticsearch & OpenSearch. It diagnoses problems by analyzing hundreds of metrics collected by a lightweight agent and offers guidance for resolving them.
Take a self-guided product tour to see for yourself (no registration required).This guide will help you check for common problems that cause the log ” + NAME + join field ” 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 + “] join field [“classname is HasChildQueryBuilder.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :
fieldType.name(); scoreMode; fieldData; context.getSearchSimilarity());
} else {
if (ignoreUnmapped) {
return new MatchNoDocsQuery();
} else {
throw new QueryShardException(context; "[" + NAME + "] join field [" + joinFieldMapper.name() +
"] doesn't hold [" + type + "] as a child");
}
}
}
