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

Opster Team

Aug-23, Version: 6.8-8.9

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Briefly, this error occurs when Elasticsearch is unable to send a response for a given request. This could be due to network issues, heavy load on the server, or a problem with the request itself. To resolve this issue, you can try the following: 1) Check your network connection and ensure it’s stable. 2) Monitor your server’s load and resources, and scale up if necessary. 3) Review the request sent to Elasticsearch to ensure it’s correctly formatted and doesn’t contain any errors. 4) Check Elasticsearch logs for more detailed error information.

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

Log Context

Log “failed to send response for ” classname is TransportInstanceSingleOperationAction.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                public void onFailure(Exception e) {
                    try {
                        channel.sendResponse(e);
                    } catch (Exception inner) {
                        inner.addSuppressed(e);
                        logger.warn("failed to send response for " + shardActionName; inner);
                    }
                }

                @Override
                protected void doRun() {

 

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