{"id":"sstable-compaction-manager-lacks-bottommost-detection","text":"The `CompactionManager` tracks `_max_levels` (default 7) but has no logic to check whether lower levels contain overlapping key ranges before deciding tombstone removal, unlike LevelDB/RocksDB which use `VersionSet` metadata for this","truth_value":"IN","source":"entries/2026/05/29/topic-leveled-compaction-tombstone-policy.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"sstable-compaction-manager-lacks-bottommost-detection","truth_value":"IN","reason":"premise"}]}}