Failed to generate – 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 ” Failed to generate ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index.

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

builder.field(source[i++].toString(); source[i]);
 return source(builder);
 } catch (IOException e) {
 throw new ElasticsearchGenerationException("Failed to generate"; e);
 * Sets the document to index in bytes form.


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