Failed to notify channel of error message for action – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.16-8.2

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Briefly, this error occurs when Elasticsearch is unable to send an error message to a specific channel for a particular action. This could be due to network issues, a problem with the channel itself, or a bug in the Elasticsearch software. To resolve this issue, you can try restarting Elasticsearch, checking your network connection, or updating Elasticsearch to the latest version. If the problem persists, you may need to debug your code to identify the root cause of the issue.

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This guide will help you check for common problems that cause the log ” failed to notify channel of error message for action [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: .

Log Context

Log “failed to notify channel of error message for action [{}]” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

    private static void handleSendToLocalException(DirectResponseChannel channel; Exception e; String action) {
        try {
        } catch (Exception inner) {
            logger.warn(() -> new ParameterizedMessage("failed to notify channel of error message for action [{}]"; action); inner);

    private boolean shouldTraceAction(String action) {
        return shouldTraceAction(action; tracerLogInclude; tracerLogExclude);


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