Failed to execute global aggregators – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-7.12

Briefly, this error occurs when Elasticsearch fails to execute global aggregators due to issues like insufficient memory, incorrect query syntax, or data type mismatches. To resolve this, you can increase the heap size to provide more memory, ensure your query syntax is correct, or check your data types to ensure they match the expected types in your aggregations. Additionally, consider optimizing your query to reduce the load on the system.

This guide will help you check for common problems that cause the log ” Failed to execute global aggregators ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: aggregations, search.

Log Context

Log “Failed to execute global aggregators” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 context.searcher().search(query; collector);
 } catch (Exception e) {
 throw new QueryPhaseExecutionException(context.shardTarget(); "Failed to execute global aggregators"; e);
 }  List aggregations = new ArrayList<>(aggregators.length);
 if (context.aggregations().factories().context() != null) {