Failed to clean async-search – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.7-7.11

Briefly, this error occurs when Elasticsearch is unable to clean up the resources used by asynchronous search operations due to issues like insufficient permissions, disk space, or network connectivity. To resolve this, you can try the following: 1) Check and increase disk space if it’s running low. 2) Verify the user running Elasticsearch has sufficient permissions. 3) Check network connectivity and firewall settings. 4) Restart the Elasticsearch service. 5) If the issue persists, consider reindexing your data or upgrading Elasticsearch to the latest version.

This guide will help you check for common problems that cause the log ” failed to clean async-search [{}] ” 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 clean async-search [{}]” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                        } else {
                    exc -> {
                        logger.error(() -> new ParameterizedMessage("failed to clean async-search [{}]"; searchId.getEncoded()); exc);
                //we get before deleting to verify that the user is authorized
                store.authorizeResponse(searchId; false;


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