Failed to send error response for action mpercolate and request – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 1.3-1.3

Briefly, this error occurs when Elasticsearch is unable to send an error response for a multi-percolate request. This could be due to network issues, insufficient resources, or a problem with the request itself. To resolve this issue, you can try the following: 1) Check your network connection and ensure that Elasticsearch is running properly. 2) Verify that your system has enough resources (CPU, memory, disk space). 3) Review the multi-percolate request to ensure it’s correctly formatted and doesn’t contain any errors. 4) Check the Elasticsearch logs for more detailed error information.

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

Log Context

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

                public void onFailure(Throwable e) {
                    try {
                    } catch (Exception e1) {
                        logger.warn("Failed to send error response for action [mpercolate] and request [" + request + "]"; e1);


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