Role mapping cannot be parsed and will be skipped – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.2

Briefly, this error occurs when Elasticsearch cannot parse the role mapping due to incorrect syntax or format. Role mapping is a crucial part of Elasticsearch’s security features, mapping users to roles. To resolve this issue, you should first check the role mapping file for any syntax errors or incorrect formats. Ensure that the file is in the correct JSON format. If the problem persists, try to recreate the role mapping. Also, ensure that the Elasticsearch version supports the role mapping syntax used. Lastly, check the Elasticsearch logs for more detailed error information.

In addition we recommend you run the Elasticsearch Template Optimizer to fix problems in your data modeling.

It will analyze your templates to detect issues and improve search performance, reduce indexing bottlenecks and optimize storage utilization. The Template Optimizer is free and requires no installation.

Log Context

Log “Role mapping [{}] cannot be parsed and will be skipped” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

            XContentParser parser = XContentType.JSON.xContent()
                .createParser(NamedXContentRegistry.EMPTY; LoggingDeprecationHandler.INSTANCE; stream)
        ) {
            return ExpressionRoleMapping.parse(id; parser);
        } catch (Exception e) {
            logger.warn(new ParameterizedMessage("Role mapping [{}] cannot be parsed and will be skipped"; id); e);
            return null;



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