Unsupported aggregation type ” + agg.getType() + ” – 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 Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” Unsupported aggregation type ” + agg.getType() + ” ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

Log Context

Log “Unsupported aggregation type [” + agg.getType() + “]”classname  is Pivot.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 public void validateConfig() {
 for (AggregationBuilder agg : config.getAggregationConfig().getAggregatorFactories()) {
 if (Aggregations.isSupportedByTransform(agg.getType()) == false) {
 throw new ElasticsearchStatusException("Unsupported aggregation type [" + agg.getType() + "]"; RestStatus.BAD_REQUEST);
 public void validateQuery(Client client; SourceConfig sourceConfig; final ActionListener listener) {


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