Failed to delete index blob during finalization – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-7.1

Briefly, this error occurs when Elasticsearch is unable to delete an index blob during the finalization process. This could be due to insufficient permissions, a full disk, or a network connectivity issue. To resolve this, you can try increasing the disk space, checking and adjusting the permissions for the Elasticsearch directory, or ensuring stable network connectivity. Additionally, you can also try restarting the Elasticsearch service or reindexing the data.

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

Log Context

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

                for (final String blobName : blobs.keySet()) {
                    if (FsBlobContainer.isTempBlobName(blobName)) {
                        try {
                        } catch (IOException e) {
                            logger.warn(() -> new ParameterizedMessage("[{}][{}] failed to delete index blob [{}] during finalization";
                                snapshotId; shardId; blobName); e);
                            throw e;


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