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How To Solve Issues Related to Log – Unable to delete snapshot file

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Updated: Jan-20

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Troubleshooting background

To troubleshoot Elasticsearch log “Unable to delete snapshot file” it’s important to understand common problems related to Elasticsearch concepts: blobstore, delete, discovery-file, repositories, repository-azure, snapshot. See detailed explanations below complete with common problems, examples and useful tips.

DELETE Elasticsearch API

What is it

DELETE  is an Elasticsearch API which removes a document from a specific index. This API requires an index name and _id document to delete the document. 

Delete a document

DELETE /my_index/_doc/1
Notes
  • A delete request throws 404 error code if the document does not already exist in the index.
  • If you want to delete a set of documents that  matches a query, you need to use delete by query API.

To help troubleshoot related issues we have gathered selected Q&A from the community and issues from Github , please review the following for further information :

1 Github Issue Number 10564  

2Github Issue Number 7980  

Log Context

Log ”Unable to delete snapshot file [{}]” classname is BlobStoreRepository.java
We have extracted the following from Elasticsearch source code to get an in-depth context : 

         } catch (IOException e) {
            if (snapshotInfo != null) {
                logger.warn(() -> new ParameterizedMessage("[{}] Unable to delete snapshot file [{}]";
                    snapshotInfo.snapshotId(); blobId); e);
            } else {
                logger.warn(() -> new ParameterizedMessage("Unable to delete snapshot file [{}]"; blobId); e);
            }
        }
    }

    private void deleteGlobalMetaDataBlobIgnoringErrors(final SnapshotInfo snapshotInfo; final String blobId) {
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