Cannot read metadata for snapshot – How to solve related issues

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Cannot read metadata for snapshot – How to solve related issues

Opster Team

Feb-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you run Elasticsearch Error Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” Cannot read metadata for snapshot ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: blobstore, metadata, repositories, repository-azure and snapshot.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

Log Context

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

                 metaData = readSnapshotMetaData(snapshotId; snapshot.version(); indices; true);
            } else {
                metaData = readSnapshotMetaData(snapshotId; null; indices; true);
            }
        } catch (IOException | SnapshotException ex) {
            logger.warn("cannot read metadata for snapshot [{}]"; ex; snapshotId);
        }
        try {
            // Delete snapshot file first so we wouldn't end up with partially deleted snapshot that looks OK
            if (snapshot != null) {
                snapshotFormat(snapshot.version()).delete(snapshotsBlobContainer; snapshotId.getSnapshot());




 

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