%s failed to delete snapshot %s for retention – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 8.4-8.9

Briefly, this error occurs when Elasticsearch fails to delete a snapshot due to issues like insufficient permissions, incorrect snapshot name, or network connectivity problems. To resolve this, ensure that the Elasticsearch process has the necessary permissions to delete the snapshot. Also, verify that the snapshot name is correct and the snapshot exists. Lastly, check your network connection to the Elasticsearch cluster to ensure it’s stable and reliable.

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

Log Context

Log “[%s] failed to delete snapshot [%s] for retention” classname is SnapshotRetentionTask.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

            .execute(ActionListener.wrap(acknowledgedResponse -> {
            }; e -> {
                try {
                    logger.warn(() -> format("[%s] failed to delete snapshot [%s] for retention"; repo; snapshot); e);
                } finally {