NAME no child types found for type type – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-6.8

Before you dig into reading this guide, have you tried asking OpsGPT what this log means? You’ll receive a customized analysis of your log.

Try OpsGPT now for step-by-step guidance and tailored insights into your Elasticsearch operation.

Briefly, this error occurs when Elasticsearch is unable to find any child types for a specified parent type. This could be due to incorrect mapping or the child type not being properly defined. To resolve this issue, you can check the mapping of your index to ensure that the parent-child relationship is correctly defined. Also, ensure that the child type exists and is correctly linked to the parent type. If the error persists, you may need to reindex your data with the correct mapping.

For a complete solution to your to your search operation, try for free AutoOps for Elasticsearch & OpenSearch . With AutoOps and Opster’s proactive support, you don’t have to worry about your search operation – we take charge of it. Get improved performance & stability with less hardware.

This guide will help you check for common problems that cause the log ” [” + NAME + “] no child types found for type [” + type + “] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: join, query.

Log Context

Log “[” + NAME + “] no child types found for type [” + type + “]” class name is HasParentQueryBuilder.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 if (parentFieldMapper.active() && type.equals(parentFieldMapper.type())) {
 childTypes.add(documentMapper.type());
 }
 }
 if (childTypes.isEmpty()) {
 throw new QueryShardException(context; "[" + NAME + "] no child types found for type [" + type + "]");
 }  Query childrenQuery;
 if (childTypes.size() == 1) {
 DocumentMapper documentMapper = context.getMapperService().documentMapper(childTypes.iterator().next());

 

How helpful was this guide?

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?