{"id":"lsm-compaction-last-writer-wins","text":"Both LSM implementations resolve key conflicts during compaction by keeping only the newest value; older values are unconditionally discarded with no user-defined merge logic","truth_value":"IN","source":"entries/2026/05/29/topic-rocksdb-merge-operator.md","source_url":"","source_hash":"","justifications":[],"dependents":["lsm-compaction-safely-reduces-read-amplification"],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"lsm-compaction-last-writer-wins","truth_value":"IN","reason":"premise"}]}}