Unable to clear cache for role role – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 8.3-8.9

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Briefly, this error occurs when Elasticsearch fails to clear the cache for a specific role, possibly due to insufficient permissions or a non-existent role. To resolve this issue, you can check if the role exists and if the user has the necessary permissions to clear the cache. If the role doesn’t exist, create it. If permissions are lacking, grant the necessary permissions to the user. Also, ensure that the Elasticsearch cluster is running properly and is accessible.

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This guide will help you check for common problems that cause the log ” unable to clear cache for role [” + role + “] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, cache.

Log Context

Log “unable to clear cache for role [” + role + “]” classname is NativeRolesStore.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :


            public void onFailure(Exception e) {
                logger.error(() -> "unable to clear cache for role [" + role + "]"; e);
                ElasticsearchException exception = new ElasticsearchException(
                    "clearing the cache for [" + role + "] failed. please clear the role cache manually";


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