Failed to delete snapshot – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-7.7

Briefly, this error occurs when Elasticsearch is unable to delete a snapshot due to reasons like the snapshot is currently in use, the snapshot or the repository doesn’t exist, or due to insufficient permissions. To resolve this, ensure the snapshot is not in use, verify the snapshot and repository exist and are correctly named, and check that the user has the necessary permissions to delete snapshots. Also, ensure the Elasticsearch cluster is in a healthy state as a failing cluster can prevent snapshot deletion.

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

Log Context

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

                            logger.debug("deleted snapshot completed - deleting files");
                            threadPool.executor(ThreadPool.Names.SNAPSHOT).execute(() -> {
                                    try {
                                        deleteSnapshot(snapshot.getRepository(); snapshot.getSnapshotId().getName(); listener; true);
                                    } catch (Exception ex) {
                                        logger.warn(() -> new ParameterizedMessage("[{}] failed to delete snapshot"; snapshot); ex);
                                    }
                                }
                            );
                        };
                        e -> {

 

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