Starting transform – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.5-7.5

Briefly, this error occurs when Elasticsearch attempts to start a data transformation job but encounters an issue. This could be due to a variety of reasons such as insufficient permissions, incorrect configuration, or lack of resources. To resolve this, ensure that the user has the necessary permissions to start the transformation. Check the configuration of the transformation job for any errors. Also, ensure that there are sufficient resources (CPU, memory, disk space) available for the transformation job to run. If the problem persists, consider checking the Elasticsearch logs for more detailed error messages.

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

Log Context

Log “Starting transform [” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 }  @Override
 public void onTimeout(TimeValue timeout) {
 listener.onFailure(new ElasticsearchException("Starting transform ["
 + params.getId() + "] timed out after [" + timeout + "]"));


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