Failed to delete data blobs during finalization – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.2-7.2

Briefly, this error occurs when Elasticsearch is unable to delete data blobs during the finalization process. This could be due to insufficient permissions, a full disk, or a network issue. To resolve this, you can check and adjust the permissions of the Elasticsearch directory, ensure there is enough disk space, or troubleshoot potential network issues. Additionally, you may need to check the health of your Elasticsearch cluster and ensure it’s functioning properly.

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

Log Context

Log “[{}][{}] failed to delete data blobs {} during finalization” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                        blobName.startsWith(DATA_BLOB_PREFIX) && updatedSnapshots.findNameFile(canonicalName(blobName)) == null)
                try {
                } catch (IOException e) {
                    logger.warn(() -> new ParameterizedMessage("[{}][{}] failed to delete data blobs {} during finalization";
                        snapshotId; shardId; orphanedBlobs); e);
            } catch (IOException e) {
                String message = "Failed to finalize " + reason + " with shard index [" + currentIndexGen + "]";
                throw new IndexShardSnapshotFailedException(shardId; message; e);


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