Listener failed while handling triggered event name – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 8.3-8.9

Briefly, this error occurs when Elasticsearch encounters an issue while processing an event. This could be due to a variety of reasons such as a network issue, a problem with the event handler, or a bug in the Elasticsearch code. To resolve this issue, you can try restarting Elasticsearch, checking your network connections, or updating Elasticsearch to the latest version. If the problem persists, you may need to debug your event handler or consult with an Elasticsearch expert.

This guide will help you check for common problems that cause the log ” listener failed while handling triggered event [” + name + “] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: .

Log Context

Log “listener failed while handling triggered event [” + name + “]” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

        for (final Listener listener : listeners) {
            try {
            } catch (final Exception e) {
                // do not allow exceptions to escape this method; we should continue to notify listeners and schedule the next run
                logger.warn(() -> "listener failed while handling triggered event [" + name + "]"; e);

    // for testing


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