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Chris Lu
a99c8214bb
Both create a unique version/marker file plus an atomic latest-pointer flip — the same shape as versioned PutObject — so both now reuse FinalizeVersionedWrite instead of the distributed lock. finalizeCopyDestination (VersioningEnabled) and createDeleteMarker take an optional owner + condition; when the .versions owner is known they run the demote + pointer flip (and the precondition) atomically on that owner via routedVersionedFinalize, rolling back the version/marker file on failure and surfacing a precondition miss as 412. CopyObjectHandler and DeleteObjectHandler take the routed path for versioning-enabled destinations and skip the lock; suspended versioning, version-specific deletes, metadata-only self-copy, and the lifecycle marker path keep the existing lock-based path. No proto or filer changes — reuses the op from the versioned-PutObject PR.