Missing definition for aggregation ” + aggregationName + ” – 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 definition for the specified aggregation is missing from the request. In order to perform an aggregation, a definition of the aggregation must be provided in the request. If the definition is missing, 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.

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This guide will help you check for common problems that cause the log ” Missing definition for aggregation ” + aggregationName + ” ” 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 “Missing definition for aggregation [” + aggregationName + “]”classname  is AggregatorFactories.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :



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