Opster Team
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This guide will help you check for common problems that cause the log ” Failed to delete shard snapshot file ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: blobstore, delete, discovery-file, repositories and repository-azure.
Overview
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.
Log Context
Log “[{}] [{}] failed to delete shard snapshot file” classname is BlobStoreRepository.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
int fileListGeneration = tuple.v2(); try { indexShardSnapshotFormat.delete(blobContainer; snapshotId.getUUID()); } catch (IOException e) { logger.warn(new ParameterizedMessage("[{}] [{}] failed to delete shard snapshot file"; shardId; snapshotId); e); } // Build a list of snapshots that should be preserved ListnewSnapshotsList = new ArrayList(); for (SnapshotFiles point : snapshots) {
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Arpit Ghiya
Senior Lead SRE at Coupa