Attempt to execute a transport nodes operation without a task – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-6.8

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Briefly, this error occurs when Elasticsearch tries to execute a transport nodes operation without a task. This usually happens due to a misconfiguration or a bug in the system. To resolve this issue, you can try the following: 1) Check your Elasticsearch configuration for any errors and correct them. 2) Update your Elasticsearch version to the latest one, as this might be a bug that has been fixed in newer versions. 3) If the error persists, consider reaching out to the Elasticsearch community or support for further assistance.

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This guide will help you check for common problems that cause the log ” attempt to execute a transport nodes operation without a task ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: task.

Log Context

Log “attempt to execute a transport nodes operation without a task” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

            transportNodeAction; nodeRequest; nodeExecutor; new NodeTransportHandler());

    protected final void doExecute(NodesRequest request; ActionListener listener) {
        logger.warn("attempt to execute a transport nodes operation without a task");
        throw new UnsupportedOperationException("task parameter is required for this operation");

    protected void doExecute(Task task; NodesRequest request; ActionListener listener) {


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