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Add checksum to existing objects that do not have a checksum

0

I have started using the ChecksumAlgorithm param to add a checksum when files are uploaded to S3.

My question is how to backfill the checksum for existing objects that have been added to the bucket in the past couple years.

Topics
Storage
Tags
Amazon Simple Storage Service
Language
English
AWS-User-6113740
asked 2 years ago254 views
1 Answer
1
Accepted Answer

Hello,

I understand that you would like to know how to apply checksum for existing objects. To apply any of these checksum values to objects that are already uploaded to Amazon S3, you can copy the object. When you copy an object, you can specify whether you want to use the existing checksum algorithm or use a new one. You can specify a checksum algorithm when using any supported mechanism for copying objects, including S3 Batch Operations.

For more information about S3 Batch Operations, see Performing large-scale batch operations on Amazon S3 objects

AWS
SUPPORT ENGINEER
Ujjawal_S
answered 2 years ago
  • rePost-User-3327852
    2 years ago

    How do I get the md5 hash checksum value of files greater than 5GB? the s3 copy method has a limitation of 5GB and hence it cannot copy and cannot generate md5. Please advise.

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