Cannot find an aggregation named aggName in – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-7.15

Briefly, this error occurs when Elasticsearch is unable to locate an aggregation by the name provided in the query. This could be due to a typo in the aggregation name or the aggregation not being defined in the index. To resolve this issue, you should first verify the aggregation name in your query. If it’s correct, check if the aggregation is defined in your index. If it’s not, you need to define it. Also, ensure that the field you’re trying to aggregate is not analyzed, as Elasticsearch does not support aggregation on analyzed fields.

This guide will help you check for common problems that cause the log ” Cannot find an aggregation named [” + aggName + “] in [ ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: aggregations, search.

Log Context

Log “Cannot find an aggregation named [” + aggName + “] in [” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 return getKey();
 InternalAggregation aggregation = aggregations.get(aggName);
 if (aggregation == null) {
 throw new InvalidAggregationPathException("Cannot find an aggregation named [" + aggName + "] in [" + containingAggName
 + "]");
 return aggregation.getProperty(path.subList(1; path.size()));