Failed to read shard snapshot file for – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-7.3

Briefly, this error occurs when Elasticsearch is unable to read the shard snapshot file. This could be due to issues like insufficient permissions, corrupted snapshot files, or disk space issues. To resolve this, you can try the following: 1) Check and adjust the file permissions if necessary. 2) Delete and recreate the snapshot if it’s corrupted. 3) Free up or add more disk space if it’s insufficient. Always ensure to have a backup before performing these operations to prevent data loss.

This guide will help you check for common problems that cause the log ” failed to read shard snapshot file for ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: snapshot, shard, repositories, blobstore.

Log Context

Log “failed to read shard snapshot file for” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 BlobStoreIndexShardSnapshot loadSnapshot() {
 try {
 return; snapshotId.getUUID());
 } catch (IOException ex) {
 throw new SnapshotException(; snapshotId; "failed to read shard snapshot file for " + shardId; ex);
 }  /**
 * Writes a new index file for the shard and removes all unreferenced files from the repository.


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