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Briefly, this error occurs when OpenSearch is unable to create or restore a snapshot due to issues like insufficient permissions, network connectivity problems, or incorrect snapshot repository configuration. To resolve this, ensure that OpenSearch has the necessary permissions to access the snapshot repository. Check your network connectivity and ensure that the snapshot repository is correctly configured. Also, verify that the snapshot repository is accessible and not corrupted. If the issue persists, consider increasing the logging level to get more detailed error messages for further troubleshooting.
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This guide will help you check for common problems that cause the log ” [{}] [{}] snapshot to [{}] [{}] … ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: repositories, snapshot, blobstore.
Log Context
Log “[{}] [{}] snapshot to [{}] [{}] …” classname is BlobStoreRepository.java.
We extracted the following from OpenSearch source code for those seeking an in-depth context :
return;
}
final ShardId shardId = store.shardId();
try {
final String generation = snapshotStatus.generation();
logger.info("[{}] [{}] snapshot to [{}] [{}] ..."; shardId; snapshotId; metadata.name(); generation);
final BlobContainer shardContainer = shardContainer(indexId; shardId);
long indexTotalFileSize = 0;
// local store is being used here to fetch the files metadata instead of remote store as currently
// remote store is mirroring the local store.
