Cannot read snapshot file – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-7.4

Briefly, this error occurs when Elasticsearch is unable to access or read the snapshot file. This could be due to incorrect file permissions, a missing file, or a corrupted file. To resolve this issue, you can check the file permissions and ensure Elasticsearch has the necessary access. If the file is missing, restore it from a backup. If the file is corrupted, you may need to recreate the snapshot. Also, ensure that the path to the snapshot file in your Elasticsearch configuration is correct.

This guide will help you check for common problems that cause the log ” cannot read snapshot file [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: blobstore, snapshot, repositories.

Log Context

Log “cannot read snapshot file [{}]” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                snapshot = getSnapshotInfo(snapshotId);
            } catch (SnapshotMissingException ex) {
            } catch (IllegalStateException | SnapshotException | ElasticsearchParseException ex) {
                logger.warn(() -> new ParameterizedMessage("cannot read snapshot file [{}]"; snapshotId); ex);
            // Delete snapshot from the index file; since it is the maintainer of truth of active snapshots
            final RepositoryData updatedRepositoryData;
            final Map foundIndices;
            final Set rootBlobs;


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