Produce a blob-reclamation report that distinguishes planned and removed bytes
Operators report savings from tombstoned bytes that still exist. Separate eligible, attempted and acknowledged removal totals.
- Focused work estimate
- 1h 45m + prerequisites
- Priority in the scenario
- Medium
- Engineering practice
- Observability · Reporting
Estimated field mix
- Storage systems60%
- Site reliability40%
Field percentages are editorial estimates of the ticket's engineering focus. They total 100%; they are not measured time, proficiency scores, or ownership evidence.
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Project context
Fictional archive Moss deduplicates generated attachments across documents within each organization. Use local files and transactional metadata stubs.
Setup prerequisites
- Generate duplicate and unique local byte fixtures.
- Create synthetic document references across two organizations.
Preceding work
Complete these dependencies, or supply their agreed outputs before taking this ticket.
- CBLOB-101 · Separate attachment display names from blob identities
- CBLOB-102 · Scope blob deduplication to the owning organization
- CBLOB-103 · Reject references to incomplete synthetic blobs
- CBLOB-104 · Tombstone unreferenced blobs before physical deletion
- CBLOB-105 · Prevent a new blob reference racing with reclamation
- CBLOB-106 · Record physical blob deletion failures without claiming completion
- CBLOB-107 · Reconcile blob metadata after a crash during deletion
- CBLOB-108 · Bound blob reclamation scans by eligibility cursor
- CBLOB-109 · Protect retained document versions from blob cleanup
Acceptance criteria
- Planned bytes are labeled
- Failures remain outstanding
- Only acknowledged removals count as reclaimed
Implementation constraints
- State measurements are local fixture observations.
Verification to include
- Sweep successful fixture batch
- Fail half the deletions
Deliverables
- Reclamation report projection
Rollout and recovery
Hide savings totals if acknowledgements cannot be reconciled.
Value of the work
For the engineer: Practice reclamation races and explicit data-lifecycle guarantees.
For the team: Inspect whether storage cleanup avoids broken references and hidden retention.
Evidence boundaries
Outcome Evidence: Tests, patches, and runbooks are requested deliverables. They become Outcome Evidence only through a qualified Mission and immutable Evidence IDs.
Ownership Evidence: Independent adaptation must be observed under a declared verification policy and cite immutable Evidence IDs. Completing a planning ticket establishes no Ownership Evidence.