No response from extension to request – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 2.6-2.9

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Briefly, this error occurs when the OpenSearch extension doesn’t respond to a request. This could be due to a network issue, a problem with the extension itself, or the extension being overloaded with requests. To resolve this issue, you can try restarting the extension, checking your network connection, or reducing the number of simultaneous requests to the extension. If the problem persists, you may need to debug the extension to identify any underlying issues.

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This guide will help you check for common problems that cause the log ” No response from extension to request. ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: response, request.

Log Context

Log “No response from extension to request.” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

        transportService.getThreadPool().generic().execute(new AbstractRunnable() {
            public void onFailure(Exception e) {
                if (e.getCause() instanceof ConnectTransportException) {
          "No response from extension to request."; e);
                    throw (ConnectTransportException) e.getCause();
                } else if (e.getCause() instanceof RuntimeException) {
                    throw (RuntimeException) e.getCause();
                } else if (e.getCause() instanceof Error) {
                    throw (Error) e.getCause();


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