Failed to delete temporary files – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.2

Briefly, this error occurs when Elasticsearch is unable to delete temporary files due to insufficient permissions, disk space issues, or the files being in use. To resolve this, you can manually delete the temporary files, ensure Elasticsearch has the necessary permissions, or check if the files are being used by another process. Additionally, make sure there is enough disk space available. If the issue persists, restarting the Elasticsearch service might help.

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

Log Context

Log “[{}] Failed to delete temporary files” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

            setJobState(jobTask; JobState.FAILED; reason);
            try {
            } catch (IOException e) {
                logger.error(new ParameterizedMessage("[{}] Failed to delete temporary files"; jobTask.getJobId()); e);

    private void closeProcessAndTask(ProcessContext processContext; JobTask jobTask; String reason) {


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