Could not initialize aggregators – 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 ” Could not initialize aggregators ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: search and aggregations.

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 “Could not initialize aggregators”classname  is AggregationPhase.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

Collections.emptyList());
 }
 context.queryCollectors().put(AggregationPhase.class; collector);
 }
 } catch (IOException e) {
 throw new AggregationInitializationException("Could not initialize aggregators"; e);
 }
 }
 } 
 @Override

 

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