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 ” has_child query does not support ” + currentFieldName + ” ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: join and query.
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 “[has_child] query does not support [” + currentFieldName + “]”classname is HasChildQueryBuilder.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :
if (QUERY_FIELD.match(currentFieldName; parser.getDeprecationHandler())) {
iqb = parseInnerQueryBuilder(parser);
} else if (INNER_HITS_FIELD.match(currentFieldName; parser.getDeprecationHandler())) {
innerHitBuilder = InnerHitBuilder.fromXContent(parser);
} else {
throw new ParsingException(parser.getTokenLocation(); "[has_child] query does not support [" + currentFieldName + "]");
}
} else if (token.isValue()) {
if (TYPE_FIELD.match(currentFieldName; parser.getDeprecationHandler())) {
childType = parser.text();
} else if (SCORE_MODE_FIELD.match(currentFieldName; parser.getDeprecationHandler())) {
