Failed to load pipeline – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.6-8.2

Briefly, this error occurs when Elasticsearch is unable to load a specified ingest pipeline. This could be due to a missing or incorrectly defined pipeline, or issues with the Elasticsearch cluster. To resolve this, ensure the pipeline is correctly defined and exists in the cluster. If the pipeline is defined in a file, check the file’s path and permissions. Also, ensure the Elasticsearch cluster is running properly and has sufficient resources. If the error persists, consider checking the Elasticsearch logs for more detailed error messages.

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

Log Context

Log “failed to load pipeline [{}]” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                    .filter(p -> p instanceof InferenceProcessor)
                    .map(p -> (InferenceProcessor) p)
            } catch (Exception ex) {
                logger.warn(new ParameterizedMessage("failed to load pipeline [{}]"; pipelineId); ex);
        return allReferencedModelKeys;


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