Error filtering source – How to solve this Elasticsearch error

Average Read Time

2 Mins

Error filtering source – How to solve this Elasticsearch error

Opster Team

March-22, 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 ” Error filtering source ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: search, source.

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 “Error filtering source”classname  is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

try {
 final int initialCapacity = nestedHit ? 1024 : Math.min(1024; source.internalSourceRef().length());
 hitContext.hit().sourceRef(objectToBytes(value; source.sourceContentType(); initialCapacity));
 } catch (IOException e) {
 throw new ElasticsearchException("Error filtering source"; e);
 public Map getDebugInfo() {


Watch a demo of the Check-Up:

Analyze your cluster