Persistent task id failed – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.9

Briefly, this error occurs when a persistent task in Elasticsearch fails to execute successfully. This could be due to various reasons such as insufficient resources, network issues, or incorrect configurations. To resolve this issue, you can try the following: 1) Check the task’s logs for more detailed error messages. 2) Verify the cluster’s health and resources. 3) Ensure the task’s configurations are correct. 4) If the task is not critical, consider deleting and recreating it. 5) If the issue persists, consider restarting the Elasticsearch node.

This guide will help you check for common problems that cause the log ” persistent task ” + id + ” failed ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: task, persistent.

Log Context

Log “persistent task ” + id + ” failed” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

     * @param listener     the listener that will be called when task is removed
    public void completePersistentTask(String id; long allocationId; Exception failure; ActionListener> listener) {
        final String source;
        if (failure != null) {
            logger.warn("persistent task " + id + " failed"; failure);
            source = "finish persistent task (failed)";
        } else {
            source = "finish persistent task (success)";
        submitUnbatchedTask(source; new ClusterStateUpdateTask() {


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