Cant read metadata from store – 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 ” Cant read metadata from store ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: blobstore, index, repository-azure and shard.

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 “{} Can’t read metadata from store” classname is BlobStoreIndexShardRepository.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                 SnapshotFiles snapshotFiles = new SnapshotFiles(snapshot.snapshot(); snapshot.indexFiles());
                final Store.MetadataSnapshot recoveryTargetMetadata;
                try {
                    recoveryTargetMetadata = store.getMetadataOrEmpty();
                } catch (CorruptIndexException | IndexFormatTooOldException | IndexFormatTooNewException e) {
                    logger.warn("{} Can't read metadata from store"; e; shardId);
                    throw new IndexShardRestoreFailedException(shardId; "Can't restore corrupted shard"; e);
                }

                final List filesToRecover = new ArrayList();
                final Map snapshotMetaData = new HashMap();




 

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