Unable to parse component template – 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 Error Check-Up which analyzes 2 JSON files to detect many configuration errors.

To easily locate the root cause and resolve this issue try AutoOps for Elasticsearch & OpenSearch. It diagnoses problems by analyzing hundreds of metrics collected by a lightweight agent and offers guidance for resolving them.

This guide will help you check for common problems that cause the log ” unable to parse component template ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: template and plugin.

Log Context

Log “unable to parse component template”classname  is IndexTemplateRegistry.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

PutComponentTemplateAction.Request request = new PutComponentTemplateAction.Request(templateName);
 try {
 DeprecationHandler.THROW_UNSUPPORTED_OPERATION; config.loadBytes())));
 } catch (Exception e) {
 throw new ElasticsearchParseException("unable to parse component template " + config.getTemplateName(); e);
 executeAsyncWithOrigin(client.threadPool().getThreadContext(); getOrigin(); request;
 new ActionListener() {


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