Failed to delete temp file – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when OpenSearch 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, you can manually delete the file if it’s not in use, or restart the OpenSearch service to unlock the file. If it’s a permissions issue, ensure that the OpenSearch process has the necessary rights to delete files in the directory. Lastly, check if there’s enough disk space and free up space if necessary.

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

Log Context

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

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


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