Nested nested path ” + path + ” is not nested – 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 Error Check-Up which analyzes 2 JSON files to detect many configuration errors.

Briefly, this error message indicates that the specified nested path is not actually nested, which is a requirement for a nested aggregation. In order to perform a nested aggregation, the nested object must be nested within another object. If the specified path is not nested, this error will be thrown.

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.

This guide will help you check for common problems that cause the log ” nested nested path ” + path + ” is not nested ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: search and aggregations.

Log Context

Log “[nested] nested path [” + path + “] is not nested”classname  is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

return new NestedAggregatorFactory(name; null; null; queryShardContext;
 parent; subFactoriesBuilder; metadata);
 if (childObjectMapper.nested().isNested() == false) {
 throw new AggregationExecutionException("[nested] nested path [" + path + "] is not nested");
 try {
 ObjectMapper parentObjectMapper = queryShardContext.nestedScope().nextLevel(childObjectMapper);
 return new NestedAggregatorFactory(name; parentObjectMapper; childObjectMapper; queryShardContext;
 parent; subFactoriesBuilder; metadata);


See how you can use AutoOps to resolve issues

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