Failed to delete temp file %s – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 8.3-8.9

Briefly, this error occurs when Elasticsearch is unable to delete a temporary file. This could be due to insufficient permissions, a locked file, or a disk space issue. To resolve this, ensure that Elasticsearch has the necessary permissions to delete files in the directory. If the file is locked, try unlocking it or restarting the system. Lastly, check if there’s enough disk space and free up some if needed.

This guide will help you check for common problems that cause the log ” failed to delete temp file %s ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index, delete.

Log Context

Log “failed to delete temp file %s” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

        } finally {
            if (tempFileRenamed == false) {
                try {
                } catch (IOException ex) {
                    logger.warn(() -> format("failed to delete temp file %s"; tempFile); ex);


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