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A cluster must support both erasure codes and replicated data.

  • Per-container setting
    • Set on the container only if the container is empty (only at creation?)
    • How do you avoid a race condition for metadata during a partition?
  • Per-object setting
    • A replicated indirection object (similar to a manifest) can point to an erasure coded location
    • All requests into EC data will have an extra lookup
    • How will the indirection object be safely created across the system?