Task getModelId model failed to load – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 8.3-8.7

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Briefly, this error occurs when Elasticsearch fails to load a specific model ID during a task execution. This could be due to issues like incorrect model ID, insufficient memory, or corrupted model data. To resolve this, you can try the following: 1) Verify the model ID is correct and exists in the system. 2) Check if there’s enough memory allocated to Elasticsearch and increase it if necessary. 3) If the model data is corrupted, consider restoring it from a backup or reindexing.

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This guide will help you check for common problems that cause the log ” [” + task.getModelId() + “] model failed to load ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, task.

Log Context

Log “[” + task.getModelId() + “] model failed to load” classname is TrainedModelAssignmentNodeService.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :


    private void handleLoadFailure(TrainedModelDeploymentTask task; Exception ex) {
        logger.error(() -> "[" + task.getModelId() + "] model failed to load"; ex);
        if (task.isStopped()) {
                () -> format(
                    "[%s] model failed to load; but is now stopped; reason [%s]";


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