Could not parse transform for watch ; unknown transform type – 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 parse transform for watch ; unknown transform type ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

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 parse transform for watch [{}]; unknown transform type [{}]”classname  is TransformRegistry.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

} 
 private ExecutableTransform parse(String watchId; String type; XContentParser parser) throws IOException {
 TransformFactory factory = factories.get(type);
 if (factory == null) {
 throw new ElasticsearchParseException("could not parse transform for watch [{}]; unknown transform type [{}]"; watchId; type);
 }
 return factory.parseExecutable(watchId; parser);
 } 
 public Transform parseTransform(String watchId; String type; XContentParser parser) throws IOException {

 

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