Missing definition for aggregation aggregationName – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-7.15

Briefly, this error occurs when an Elasticsearch query is trying to use an aggregation that hasn’t been defined. This could be due to a typo in the aggregation name or the aggregation not being properly set up. To resolve this issue, you should first check the spelling and case of your aggregation name. If it’s correct, ensure that the aggregation is properly defined in your Elasticsearch setup. If the aggregation is not needed, consider removing it from your query.

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: aggregations, search.

Log Context

Log “Missing definition for aggregation [” + aggregationName + “]” class name is AggregatorFactories.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 + fieldName + "]; but got a [" + token + "] in [" + aggregationName + "]");
 }  if (aggBuilder == null) {
 throw new ParsingException(parser.getTokenLocation(); "Missing definition for aggregation [" + aggregationName + "]";
 } else {
 if (metadata != null) {


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