Remove previous_checksum from disagg block header

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    • Type: Improvement
    • Resolution: Unresolved
    • Priority: Major - P3
    • None
    • Affects Version/s: None
    • Component/s: None
    • Storage Engines - Persistence
    • SE Persistence - 2026-01-16, SE Persistence - 2026-01-30
    • None

      The checksum of the previous version in the delta chain is already in the previous version's checksum field. Therefore, there is no need to store previous_checksum in the disagg block header. We should remove it when we are allowed to do this data format change before private preview.

            Assignee:
            [DO NOT USE] Backlog - Storage Engines Team
            Reporter:
            Chenhao Qu
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              Created:
              Updated: