Failed to send exception response for action – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-6.8

Briefly, this error occurs when Elasticsearch is unable to send an exception response for a specific action. This could be due to network issues, insufficient permissions, or a problem with the Elasticsearch cluster itself. To resolve this issue, you can try the following: 1) Check your network connection and ensure that Elasticsearch is properly connected. 2) Verify that the user has the necessary permissions to perform the action. 3) Check the health of your Elasticsearch cluster and ensure it’s functioning properly. 4) Review the Elasticsearch logs for more detailed error information.

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

Log Context

Log “Failed to send exception response for action [” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

public void onFailure(Exception e) {
                    try {
                    } catch (Exception e1) {
                        logger.warn("failed to send exception response for action [" + action + "]"; e1);

                protected void doRun() throws Exception {


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