v.25.10Improvement

Remove previous remote blobs if metadata transaction

Official CH changelog text
Rewrite disk object storage transaction removes previous remote blobs if metadata transaction is committed. #81787 (Sema Checherinda).
Improved transaction handling for remote blob data on object storage disks, ensuring previous blobs are removed upon successful metadata transaction commit.

Why it matters

This feature addresses storage consistency by cleaning up outdated remote blobs only after the corresponding metadata transaction is successfully committed. It prevents orphaned data and ensures that object storage remains clean and synchronized with metadata state.

How to use it

The improved transaction behavior is automatically applied when using object storage disks with transactions. No additional configuration is required from users; it enhances reliability of rewrite operations transparently.

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