Missing checksum for name name – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

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Briefly, this error occurs when Elasticsearch cannot find the checksum for a specific file during a snapshot or restore operation. This could be due to corruption or deletion of the file. To resolve this issue, you can try to restore the missing or corrupted file from a backup. If that’s not possible, you may need to recreate the snapshot. Additionally, ensure that your Elasticsearch cluster has sufficient disk space and proper permissions to avoid such issues in the future.

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This guide will help you check for common problems that cause the log ” missing checksum for name [” + name + “] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: blobstore, index.

Log Context

Log “missing checksum for name [” + name + “]” class name is BlobStoreIndexShardSnapshot.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 } else if (length < 0) {
 throw new ElasticsearchParseException("missing or invalid file length");
 } else if (writtenBy == null) {
 throw new ElasticsearchParseException("missing or invalid written_by [" + writtenBy + "]");
 } else if (checksum == null) {
 throw new ElasticsearchParseException("missing checksum for name [" + name + "]");
 }
 return new FileInfo(name; new StoreFileMetadata(physicalName; length; checksum; writtenBy; metaHash; writerUuid); partSize);
 }  @Override

 

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