THREAD NAME – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.11-8.9

Briefly, this error occurs when there’s an issue with a specific thread in Elasticsearch. The thread name is usually followed by more detailed information about the error. The problem could be due to various reasons such as high CPU usage, memory issues, or a bug in the code. To resolve this, you can monitor the system’s resources, check the thread pool’s statistics, or debug the code to identify the root cause. If it’s a known bug, updating Elasticsearch to the latest version might solve the issue.

This guide will help you check for common problems that cause the log ” THREAD NAME: {} ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “THREAD NAME: {}” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

    private void afterSettingUpdate(
        ActionListener listener;
        ClusterUpdateSettingsResponse clusterUpdateSettingsResponse
    ) {"THREAD NAME: {}" + Thread.currentThread().getName());

        // Ensure positive result
        if (clusterUpdateSettingsResponse.isAcknowledged() == false) {
            listener.onFailure(new ElasticsearchException("Failed to update monitoring migration settings"));


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