Failed to build top level pipeline aggregators – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-7.1

Briefly, this error occurs when Elasticsearch fails to construct the top-level pipeline aggregators due to incorrect or incompatible aggregation queries. This could be due to a syntax error, incorrect field name, or incompatible data types. To resolve this issue, you should first verify the syntax of your aggregation query. Ensure that the field names and data types used in the query match those in your index. If the error persists, try simplifying your query or breaking it down into smaller parts to identify the problematic section.

This guide will help you check for common problems that cause the log ” Failed to build top level pipeline 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 build top level pipeline aggregators” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 + "allowed at the top level");
 } catch (IOException e) {
 throw new AggregationExecutionException("Failed to build top level pipeline aggregators"; e);
 }  // disable aggregations so that they don't run on next pages in case of scrolling


How helpful was this guide?

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?