{"id":"tombstone-removal-requires-full-key-coverage","text":"A tombstone for key K can only be safely removed during compaction if every SSTable that could contain an older entry for K is included in that compaction run; otherwise the deleted key can be resurrected from a surviving SSTable","truth_value":"IN","source":"entries/2026/05/28/topic-tombstone-gc-safety.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"tombstone-removal-requires-full-key-coverage","truth_value":"IN","reason":"premise"}]}}