Hey team quick question If I run the `VACUUM` command on a D

Question

Hey team quick question If I run the `VACUUM` command on a Delta table that s stored on S3 and our S3 bucket policy restricts file deletions will the command fail or just proceed without deleting any files Also in case files get deleted is there a way to rollback the operation < Dominique Brezinski>

Dominique Brezinski · Answer

I expect it will fail when the S3 delete is forbidden but I am not sure I believe you can only recover deleted objects in S3 if you have versioning enabled <https docs aws amazon com AmazonS3 latest userguide RestoringPreviousVersions html>

Dominique Brezinski · Answer

There is no command to do this in Delta that I am aware of You would have to see if the log has history prior to the retention window used in vacuum then construct an object list for the prior version and use that to restore the S3 objects that are now deleted

Fijurrahman Amanulla · Answer

Thank you < Dominique Brezinski> Let me check