Task getModelId Failed to kill process – 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 tries to terminate a process, but fails. This could be due to insufficient permissions, or the process may be stuck in an unresponsive state. To resolve this issue, you can try to manually kill the process using the process ID. If that doesn’t work, check the user permissions to ensure Elasticsearch has the necessary rights to terminate processes. Lastly, if the process is unresponsive, you may need to restart the Elasticsearch service or the entire server to clear the issue.

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This guide will help you check for common problems that cause the log ” [” + task.getModelId() + “] Failed to kill process ” 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() + “] Failed to kill process” classname is DeploymentManager.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                if (process.get() == null) {
            } catch (IOException e) {
                logger.error(() -> "[" + task.getModelId() + "] Failed to kill process"; e);

        private void onProcessCrash(String reason) {
            logger.error("[{}] inference process crashed due to reason [{}]"; task.getModelId(); reason);


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